2024

Gebhard, Florian (2024)
Investigations toward the accumulation, separation, mixing and detection of charged species using microfluidic electrophoresis.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00026944
Dissertation, Erstveröffentlichung, Verlagsversion

2023

Ratschow, Aaron D. ; Stein, Sigrun ; Gross, Hans‐Jürgen (2023)
Charge distribution in turbulent flow of charged liquid — Modeling and experimental validation.
In: Process Safety Progress, 42 (2)
doi: 10.1002/prs.12431
Artikel, Bibliographie

2022

Dehe, Sebastian ; Hartmann, Maximilian ; Bandopadhyay, Aditya ; Hardt, Steffen (2022)
The Spatial Structure of Electrostatically Forced Faraday Waves.
In: Journal of Fluid Mechanics, 939
doi: 10.1017/jfm.2022.163
Artikel, Bibliographie

Hardt, S. ; McHale, G. (2022)
Flow and Drop Transport Along Liquid-Infused Surfaces.
In: Annual Review of Fluid Mechanics, 54
doi: 10.1146/annurev-fluid-030121-113156
Artikel, Bibliographie

Dai, Q. ; Chen, S. ; Huang, W. ; Wang, X. ; Hardt, S. (2022)
On the thermocapillary migration between parallel plates.
In: International Journal of Heat and Mass Transfer, 182
doi: 10.1016/j.ijheatmasstransfer.2021.121962
Artikel, Bibliographie

Dehe, Sebastian (2022)
Transport processes and instabilities induced by electric fields acting on fluidic interfaces.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00019812
Dissertation, Erstveröffentlichung, Verlagsversion

Hartmann, Johannes Jürgen (2022)
Fluid Interfaces with and without Adsorbed Species under Homogeneous Electric Fields.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00020635
Dissertation, Erstveröffentlichung, Verlagsversion

Shojaeian, Mostafa (2022)
Droplet Production and Handling in Microchannels Using Electric Fields.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00021370
Dissertation, Erstveröffentlichung, Verlagsversion

Weimar, Lukas ; Hu, Luyang ; Baier, Tobias ; Hardt, Steffen (2022)
Drop impact on a sticky porous surface with gas discharge: transformation of drops into bubbles.
In: Journal of Fluid Mechanics, 953
doi: 10.1017/jfm.2022.921
Artikel, Bibliographie

May, Alexander ; Hartmann, Johannes Jürgen ; Hardt, Steffen (2022)
Phase separation in evaporating all-aqueous sessile drops.
In: Soft Matter, 18 (34)
doi: 10.1039/d2sm00613h
Artikel, Bibliographie

2021

Dehe, Sebastian ; Hardt, Steffen (2021)
Deformation modes of an oil-water interface under a local electric field: From Taylor cones to surface dimples.
In: Physical Review Fluids, 6 (12)
doi: 10.1103/PhysRevFluids.6.123702
Artikel, Bibliographie

Dehe, Sebastian ; Rehm, Imke-Sophie ; Hardt, Steffen (2021)
Hydrodynamic dispersion in Hele-Shaw flows with inhomogeneous wall boundary conditions.
In: Journal of Fluid Mechanics, 925
doi: 10.1017/jfm.2021.648
Artikel, Bibliographie

Hartmann, M. ; Fricke, M. ; Weimar, L. ; Gründing, D. ; Marić, T. ; Bothe, D. ; Hardt, S. (2021)
Breakup dynamics of capillary bridges on hydrophobic stripes.
In: International Journal of Multiphase Flow, 140
doi: 10.1016/j.ijmultiphaseflow.2021.103582
Artikel, Bibliographie

Boyko, Evgeniy ; Bacheva, Vesna ; Eigenbrod, Michael ; Paratore, Federico ; Gat, Amir D. ; Hardt, Steffen ; Bercovici, Moran (2021)
Microscale hydrodynamic cloaking and shielding via electro-osmosis.
In: Physical Review Letters, 126 (18)
doi: 10.1103/PhysRevLett.126.184502
Artikel, Bibliographie

Scheiger, Johannes M. ; Kuzina, Mariia A. ; Eigenbrod, Michael ; Wu, Yanchen ; Wang, Fei ; Heißler, Stefan ; Hardt, Steffen ; Nestler, Britta ; Levkin, Pavel A. (2021)
Liquid Wells as Self-Healing, Functional Analogues to Solid Vessels.
In: Advanced Materials, 33 (23)
doi: 10.1002/adma.202100117
Artikel, Bibliographie

Gebhard, Florian ; Hartmann, Johannes ; Hardt, Steffen (2021)
Interaction of proteins with phase boundaries in aqueous two-phase systems under electric fields.
In: Soft Matter, 17 (14)
doi: 10.1039/D0SM01921F
Artikel, Bibliographie

Fickel, Beatrice ; Postulka, Niels ; Hartmann, Maximilian ; Gründing, Dirk M. ; Nau, Maximilian ; Meckel, Tobias ; Biesalski, Markus (2021)
Changes of meniscus shapes and capillary rise heights under hypergravity.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 610
doi: 10.1016/j.colsurfa.2020.125688
Artikel, Bibliographie

Hartmann, Maximilian Roland (2021)
Wetting States of Droplets on Patterned Surfaces and in an Electric Field.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00017420
Dissertation, Erstveröffentlichung, Verlagsversion

Eigenbrod, Michael (2021)
The influence of boundary configurations on the dissipation and stability in fluids at low Reynolds numbers.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00017578
Dissertation, Erstveröffentlichung, Verlagsversion

Straub, Benedikt Benjamin (2021)
Dewetting of surfactant solutions close to receding three-phase contact lines.
Technische Universität Darmstadt
doi: 10.26083/tuprints-00018617
Dissertation, Erstveröffentlichung, Verlagsversion

Lv, Cunjing ; Hardt, Steffen (2021)
Wetting of a liquid annulus in a capillary tube.
In: Soft Matter, 17 (7)
doi: 10.1039/D0SM00346H
Artikel, Bibliographie

2020

Dietzel, M. ; Hardt, S. (2020)
Electroosmotic flow in small-scale channels induced by surface-acoustic waves.
In: Physical Review Fluids, 5
doi: 10.1103/PhysRevFluids.5.123702
Artikel, Bibliographie

Baier, T. ; Hardt, S. (2020)
Influence of insoluble surfactants on shear flow over a surface in Cassie state at large Péclet numbers.
In: Journal of Fluid Mechanics, 907
doi: 10.1017/jfm.2020.814
Artikel, Bibliographie

Eigenbrod, M. ; Hardt, S. (2020)
The effective shear and dilatational viscosities of a particle-laden interface in the dilute limit.
In: Journal of Fluid Mechanics, 903
doi: 10.1017/jfm.2020.627
Artikel, Bibliographie

Dehe, Sebastian ; Rofman, Baruch ; Bercovici, Moran ; Hardt, Steffen (2020)
Electro-osmotic flow enhancement over superhydrophobic surfaces.
In: Physical Review Fluids, 5
doi: 10.1103/PhysRevFluids.5.053701
Artikel, Bibliographie

Lv, Cunjing ; Varanakkottu, Subramanyan N. ; Hardt, Steffen (2020)
Liquid plug formation from heated binary mixtures in capillary tubes.
In: Journal of Fluid Mechanics, 889
doi: 10.1017/jfm.2020.80
Artikel, Bibliographie

Khalil, Adnan ; Zimmermann, Matthias ; Bell, Alena K. ; Kunz, Ulrike ; Hardt, Steffen ; Kleebe, Hans-Joachim ; Stark, Robert W. ; Stephan, Peter ; Andrieu-Brunsen, Annette (2020)
Insights into the interplay of wetting and transport in mesoporous silica films.
In: Journal of Colloid and Interface Science, 560
doi: 10.1016/j.jcis.2019.09.093
Artikel, Bibliographie

Hardt, Steffen ; Hartmann, Johannes ; Zhao, Sicheng ; Bandopadhyay, Aditya (2020)
Electric-Field-Induced Pattern Formation in Layers of DNA Molecules at the Interface between Two Immiscible Liquids.
In: Physical Review Letters, 124 (6)
doi: 10.1103/PhysRevLett.124.064501
Artikel, Bibliographie

Goswami, P. ; Baier, T. ; Tiwari, S. ; Lv, C. ; Hardt, S. ; Klar, A. (2020)
Drag force on spherical particle moving near a plane wall in highly rarefied gas.
In: Journal of Fluid Mechanics, 883
doi: 10.1017/jfm.2019.921
Artikel, Bibliographie

Shojaeian, Mostafa ; Hardt, Steffen (2020)
Mass Transfer via Femtoliter Droplets in Ping-Pong Mode.
In: Physical Review Applied, 13 (1)
doi: 10.1103/PhysRevApplied.13.014015
Artikel, Bibliographie

Baier, Tobias ; Hardt, Steffen (2020)
Gas separation in a Knudsen pump inspired by a Crookes radiometer.
In: Microfluidics and Nanofluidics, 24 (6)
doi: 10.1007/s10404-020-02342-6
Artikel, Bibliographie

Rofman, Baruch ; Dehe, Sebastian ; Frumkin, Valeri ; Hardt, Steffen ; Bercovici, Moran (2020)
Intermediate States of Wetting on Hierarchical Superhydrophobic Surfaces.
In: Langmuir, 36 (20)
doi: 10.1021/acs.langmuir.0c00499
Artikel, Bibliographie

Sinn, Nico (2020)
Flüssigkeitstransport durch elektrische Krafteinwirkung an Fluid-Fluid-Grenzflächen.
Technische Universität Darmstadt
doi: 10.25534/tuprints-00011852
Dissertation, Erstveröffentlichung

2019

Gerlach, Felix ; Hartmann, Maximilian ; Tropea, Cameron (2019)
The interaction of inner and outer surface corners during spontaneous wetting.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 583
doi: 10.1016/j.colsurfa.2019.123977
Artikel, Bibliographie

Henrich, Franziska ; Linke, Dorota ; Sauer, Hans Martin ; Dörsam, Edgar ; Hardt, Steffen ; Butt, Hans-Jürgen ; Auernhammer, Günter K. (2019)
Forced dynamic dewetting of structured surfaces: Influence of surfactants.
In: Physical Review Fluids, 4
doi: 10.1103/PhysRevFluids.4.124202
Artikel, Bibliographie

Sadeghi, Arman ; Azari, Milad ; Hardt, Steffen (2019)
Electroosmotic flow in soft microchannels at high grafting densities.
In: Physical Review Fluids, 4 (6)
doi: 10.1103/PhysRevFluids.4.063701
Artikel, Bibliographie

Sinn, Nico ; Schür, Maximilian T. ; Hardt, Steffen (2019)
No-contact electrostatic manipulation of droplets on liquid-infused surfaces: Experiments and numerical simulations.
In: Applied Physics Letters, 114 (21)
doi: 10.1063/1.5091836
Artikel, Bibliographie

Hartmann, Maximilian ; Hardt, Steffen (2019)
Stability of Evaporating Droplets on Chemically Patterned Surfaces.
In: Langmuir, 35 (14)
doi: 10.1021/acs.langmuir.9b00172
Artikel, Bibliographie

Roy, Tamal ; Szuttor, Kai ; Smiatek, Jens ; Holm, Christian ; Hardt, Steffen (2019)
Conformation and Dynamics of Long-Chain End-Tethered Polymers in Microchannels.
In: Polymers, 11 (3)
doi: 10.3390/polym11030488
Artikel, Bibliographie

Paulssen, Dorothea ; Hardt, Steffen ; Levkin, Pavel A. (2019)
Droplet Sorting and Manipulation on Patterned Two-Phase Slippery Lubricant-Infused Surface.
In: ACS Applied Materials & Interfaces, 11 (17)
doi: 10.1021/acsami.8b21879
Artikel, Bibliographie

Zhao, Sicheng ; Dietzel, Mathias ; Hardt, Steffen (2019)
Faraday instability of a liquid layer on a lubrication film.
In: Journal of Fluid Mechanics, 879
doi: 10.1017/jfm.2019.684
Artikel, Bibliographie

2018

Sinn, Nico ; Schür, Maximilian ; Hardt, Steffen (2018)
No contact-manipulation of drops on a liquid-infused surface using electric fields.
71st Annual Meeting of the APS Division of Fluid Dynamics. Atlanta (18.11.2018-20.11.2018)
Konferenzveröffentlichung, Bibliographie

de Maleprade, Hélène ; Soto, Dan ; Quéré, David ; Hinch, E. John ; Baier, Tobias ; Schür, Maximilian T. ; Hardt, Steffen (2018)
Air-propelled, herringbone-textured platelets.
In: Physical Review Fluids, 3 (104101)
doi: 10.1103/PhysRevFluids.3.104101
Artikel, Bibliographie

Baier, Tobias ; Tiwari, Sudarshan ; Shrestha, Samir ; Klar, Axel ; Hardt, Steffen (2018)
Thermophoresis of Janus particles at large Knudsen numbers.
In: Physical Review Fluids, 3 (094202)
doi: 10.1103/PhysRevFluids.3.094202
Artikel, Bibliographie

Roy, Tamal (2018)
Conformation, dynamics and manipulation of polyelectrolytes in microchannels.
Technische Universität Darmstadt
Dissertation, Bibliographie

Henrich, Franziska Monika (2018)
Dynamic dewetting of surfactant solutions.
Technische Universität Darmstadt
Dissertation, Erstveröffentlichung

Shojaeian, Mostafa ; Hardt, Steffen (2018)
Fast electric control of the droplet size in a microfluidic T-junction droplet generator.
In: Applied Physics Letters, 112 (19)
doi: 10.1063/1.5025874
Artikel, Bibliographie

Vécsei, Miklós ; Dietzel, Mathias ; Hardt, Steffen (2018)
Interfacial instability of liquid films coating the walls of a parallel-plate channel and sheared by a gas flow.
In: Microfluidics and Nanofluidics, 22 (9)
doi: 10.1007/s10404-018-2111-z
Artikel, Bibliographie

Barz, Dominik P. J. ; Scholz, Mathias ; Hardt, Steffen (2018)
Electrokinetic manipulation of the von Kármán vortex street in the wake of a confined cylinder. I. DC electric field.
In: Physics of Fluids, 30 (8)
doi: 10.1063/1.5037595
Artikel, Bibliographie

Lv, Cunjing ; Eigenbrod, Michael ; Hardt, Steffen (2018)
Stability and collapse of holes in liquid layers.
In: Journal of Fluid Mechanics, 855
doi: 10.1017/jfm.2018.680
Artikel, Bibliographie

Eigenbrod, Michael ; Bihler, Florian ; Hardt, Steffen (2018)
Electrokinetics of a particle attached to a fluid interface: Electrophoretic mobility and interfacial deformation.
In: Physical Review Fluids, 3 (10)
doi: 10.1103/PhysRevFluids.3.103701
Artikel, Bibliographie

Lv, Cunjing ; Varanakkottu, Subramanyan Namboodiri ; Baier, Tobias ; Hardt, Steffen (2018)
Controlling the Trajectories of Nano/Micro Particles Using Light-Actuated Marangoni Flow.
In: Nano Letters, 18 (11)
doi: 10.1021/acs.nanolett.8b02814
Artikel, Bibliographie

2017

Bandopadhyay, A. ; Hardt, Steffen (2017)
Stability of horizontal viscous fluid layers in a vertical arbitrary time periodic electric field.
In: Physics of Fluids, 29 (124101)
Artikel, Bibliographie

Damian, I.R. ; Hardt, Steffen ; Balan, C. (2017)
From flow focusing to vortex formation in crossing microchannels.
In: Microfluidics and Nanofluidics, 21 (142)
Artikel, Bibliographie

Roy, T. ; Szuttor, K. ; Smiatek, J. ; Holm, C. ; Hardt, Steffen (2017)
Stretching of surface‐tethered polymers in pressure‐driven flow under confinement.
In: Soft Matter, 13
Artikel, Bibliographie

Roy, T. ; Szuttor, K. ; Smiatek, J. ; Holm, C. ; Hardt, Steffen (2017)
Electric‐field‐induced stretching of surface‐tethered polyelectrolytes in a microchannel.
In: Physical Review, 96 (3)
Artikel, Bibliographie

Szuttor, K. ; Roy, T. ; Hardt, Steffen ; Holm, C. ; Smiatek, J. (2017)
The stretching force on a tethered polymer in pressure‐driven flow.
In: Journal of Chemical Physics, 147 (034902)
Artikel, Bibliographie

Baier, Tobias ; Hardt, Steffen ; Shahabi, Vahid ; Roohi, Ehsan (2017)
Knudsen pump inspired by Crookes radiometer with a specular wall.
In: Physical Review Fluids, 2 (3)
doi: 10.1103/PhysRevFluids.2.033401
Artikel, Bibliographie

Dietzel, Mathias ; Hardt, Steffen (2017)
Flow and streaming potential of an electrolyte in a channel with an axial temperature gradient.
In: Journal of Fluid Mechanics, 813
Artikel, Bibliographie

Shahabi, V. ; Baier, T. ; Roohi, E. ; Hardt, Steffen (2017)
Thermally induced gas flows in ratchet channels with diffuse and specular boundaries.
In: Scientific Reports, 7 (41412)
doi: 10.1038/srep41412
Artikel, Bibliographie

2016

Nejati, Iman (2016)
Coupled dynamics of conjugated liquid layers driven by cellular Bénard-Marangoni instability.
Technische Universität Darmstadt
Dissertation, Bibliographie

Dörr, A. ; Hardt, Steffen ; Masoud, H. ; Stone, H. A. (2016)
Drag and diffusion coefficients of a spherical particle attached to a fluid interface.
In: Journal of Fluid Mechanics, 790
Artikel, Bibliographie

Hardt, Steffen (2016)
Free-molecule heat transfer in a conservative force field between parallel surfaces.
In: Physical Review E, 93 (5)
Artikel, Bibliographie

Dietzel, Mathias ; Hardt, Steffen (2016)
Thermoelectricity in confined liquid electrolytes.
In: Physical Review Letters, 116 (22)
Artikel, Bibliographie

Nejati, Iman ; Dietzel, Mathias ; Hardt, Steffen (2016)
Exploiting cellular convection in a thick liquid layer to pattern a thin polymer film.
In: Applied Physics Letters, 108 (051604)
Artikel, Bibliographie

Pandey, Anamika ; Hardt, Steffen ; Klar, Axel ; Tiwari, Sudarshan (2016)
Brownian dynamics of rigid particles in an incompressible fluctuating fluid by a meshfree method.
In: Computers and Fluids, 127
Artikel, Bibliographie

Tiwari, Sudarshan ; Klar, Axel ; Hardt, Steffen (2016)
Numerical simulation of wetting phenomena by a meshfree particle method.
In: Journal of Computational and Applied Mathematics, 292
Artikel, Bibliographie

2015

De, Simanta ; Bhattacharyya, Somnath ; Hardt, Steffen (2015)
Electroosmotic flow in a slit nanochannel with superhydrophobic walls.
In: Microfluidics and Nanofluidics, 19 (6)
Artikel, Bibliographie

Hajian, Ramin ; Hardt, Steffen (2015)
Formation and lateral migration of nanodroplets via solvent shifting in a microfluidic device.
In: Microfluidics and Nanofluidics, 19 (6)
Artikel, Bibliographie

Nejati, I. ; Dietzel, M. ; Hardt, Steffen (2015)
Conjugated liquid layers driven by the short-wavelength Bénard–Marangoni instability: experiment and numerical simulation.
In: J. Fluid Mech., 783
Artikel, Bibliographie

Schönecker, Clarissa ; Hardt, Steffen (2015)
Assessment of drag reduction at slippery, topographically structured surfaces.
In: Microfluidics and Nanofluidics, 19 (1)
Artikel, Bibliographie

Sinn, N. ; Alishahi, M. ; Hardt, Steffen (2015)
Detachment of particles and particle clusters from liquid/liquid interfaces.
In: J. Colloid Interface Science, 458
Artikel, Bibliographie

Prangemeier, Tim ; Nejati, Iman ; Müller, Andreas ; Endres, Philip ; Fratzl, Mario ; Dietzel, Mathias (2015)
Optimized thermoelectric sensitivity measurement for differential thermometry with thermopiles.
In: Experimental Thermal and Fluid Science, 65
doi: 10.1016/j.expthermflusci.2015.01.018
Artikel, Bibliographie

Pini, Cesare ; Baier, Tobias ; Dietzel, Mathias (2015)
Energy conversion by surface-tension-driven charge separation.
In: Microfluidics and Nanofluidics, 19 (3)
Artikel, Bibliographie

Dörr, A. ; Hardt, Steffen (2015)
Driven particles at fluid interfaces acting as capillary dipoles.
In: Journal of Fluid Mechanics, 770
Artikel, Bibliographie

Eifert, Alexander ; Petit, Julien ; Baier, Tobias ; Bonaccurso, Elmar ; Hardt, Steffen (2015)
Inscribing wettability gradients onto polymer substrates with different stiffness using corona discharge in point-to-plane geometry.
In: Applied Surface Science, 330
Artikel, Bibliographie

Shrestha, S. ; Tiwari, S. ; Klar, A. ; Hardt, Steffen (2015)
Numerical simulation of a moving rigid body in a rarefied gas.
In: Journal of Computational Physics, 292
Artikel, Bibliographie

Eifert, Alexander (2015)
Untersuchungen zur Koronaentladung, Oberflächenmodifikation mittels Koronaentladung und zu Benetzungsphänomenen auf imprägnierten Oberflächen.
Technische Universität Darmstadt
Dissertation, Bibliographie

Dörr, Aaron (2015)
Microparticles at fluid-fluid interfaces : modeling of electric double layers and capillary effects.
Technische Universität Darmstadt
Dissertation, Bibliographie

Hajian, Ramin (2015)
Production of nanodroplets and microdroplets in microfluidic devices based on liquid-liquid extraction (mass transfer).
Technische Universität Darmstadt
Dissertation, Bibliographie

2014

Varanakkottu, S. N. ; Engelbart, H. ; Joshi, S. ; Still, M. ; Xiao, W. ; Hardt, Steffen (2014)
Light-controlled tuning of the optical properties of nanoporous glass.
In: Optics Express, 22 (21)
Artikel, Bibliographie

Hoffmann, A. ; Potje-Kamloth, K. ; Hardt, Steffen ; Bassler, M. (2014)
A robust electrical sensor for contactless control of moving plugs in microfluidic systems with high accurary.
Proc. 2nd International Conference on MicroFluidic Handling Systems. Freiburg (08.10.2014-10.10.2014)
Konferenzveröffentlichung, Bibliographie

Doerr, Aaron ; Hardt, Steffen (2014)
Line tension and reduction of apparent contact angle associated with electric double layers.
In: Physics of Fluids, 26 (082105)
doi: 10.1063/1.4892621
Artikel, Bibliographie

Dörr, A. ; Sadiki, A. ; Mehdizadeh, A. (2014)
Critical analysis of the apparent viscosity of polydisperse suspensions of hard spheres including shear rate effects.
Proceedings of 8th Int. Conf. on Multiphase Flow (ICMF). Jeju, Korea (26.05.2013-31.05.2013)
Konferenzveröffentlichung, Bibliographie

Eifert, Alexander ; Paulssen, Dorothea ; Varanakkottu, Subramanyan Namboodiri ; Baier, Tobias ; Hardt, Steffen (2014)
Simple Fabrication of Robust Water-Repellent Surfaces with Low Contact-Angle Hysteresis Based on Impregnation.
In: Advanced Materials Interfaces, 1 (1300138)
doi: 10.1002/admi.201300138
Artikel, Bibliographie

Baier, T. ; Dölger, J. ; Hardt, Steffen (2014)
Energy harvesting through gas dynamics in the free molecular flow regime between structured surfaces at different temperatures.
In: Phys. Rev., 89 (5)
doi: 10.1103/PhysRevE.89.053003
Artikel, Bibliographie

Babu, Deepu J. ; Varanakkottu, Subramanyan Namboodiri ; Eifert, Alexander ; Koning, Dirk de ; Cherkashinin, Gennady ; Hardt, Steffen ; Schneider, Joerg J. (2014)
Inscribing Wettability Gradients Onto Superhydrophobic Carbon Nanotube Surfaces.
In: Advanced Materials Interfaces, 1 (2)
doi: 10.1002/admi.201300049
Artikel, Bibliographie

Vécsei, M. ; Dietzel, M. ; Hardt, Steffen (2014)
Thermal interaction between two liquid films undergoing long-wavelength instabilities.
In: Phys. Rev., 89 (5)
doi: 10.1103/PhysRevE.89.053018
Artikel, Bibliographie

Schönecker, Clarissa ; Baier, T. ; Hardt, Steffen (2014)
Influence of the enclosed fluid on the flow over a microstructured surface in the Cassie state.
In: Journal of Fluid Mechanics, 740
doi: 10.1017/jfm.2013.647
Artikel, Bibliographie

Tiwari, S. ; Klar, A. ; Hardt, Steffen (2014)
Simulations of micro channel gas flows with domain decomposition technique for kinetic and fluid dynamic equations.
Proc. 21st International Conference on Domain Decomposition Methods. INRIA Rennes-Bretagne-Atlantique, France (25.06.2012-29.06.2012)
Konferenzveröffentlichung, Bibliographie

Schönecker, Clarissa ; Hardt, Steffen (2014)
Electro-osmotic flow along superhydrophobic surfaces with embedded electrodes.
In: Physical Review E, 89 (063005)
doi: 10.1103/PhysRevE.89.063005
Artikel, Bibliographie

Khnouf, R. ; Goet, G. ; Baier, T. ; Hardt, Steffen (2014)
Increasing the sensitivity of microfluidics based immunoassays using isotachophoresis.
In: Analyst, 139
doi: 10.1039/c4an00545g
Artikel, Bibliographie

2013

Varanakkottu, S. N. ; George, S. D. ; Baier, T. ; Hardt, Steffen ; Ewald, M. ; Biesalski, M. (2013)
MANIPULATION OF MICROPARTICLES AND BIOLOGICAL CELLS USING LIGHT-INDUCED MARANGONI FLOW.
µTAS 2013 , The 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences. Freiburg (27.10.2013-31.10.2013)
Konferenzveröffentlichung, Bibliographie

Tiwari, S. ; Klar, A. ; Hardt, Steffen ; Donkov, A. (2013)
Coupled solution of the Boltzmann and Navier–Stokes equations in gas–liquid two phase flow.
In: Computers and Fluids, 71
doi: 10.1016/j.compfluid.2012.10.018.
Artikel, Bibliographie

Schönecker, Clarissa ; Hardt, Steffen (2013)
Longitudinal and transverse flow over a cavity containing a second immiscible fluid.
In: Journal of Fluid Mechanics, 717
doi: 10.1017/jfm.2012.577.
Artikel, Bibliographie

Kania, T. ; Schilder, B. ; Kissel, T. ; Stephan, Peter ; Hardt, Steffen ; Dreizler, A. (2013)
Development of a miniaturized energy converter without moving parts.
In: Flow, Turbulence and Combustion, 90
doi: 10.1007/s10494-012-9418-8
Artikel, Bibliographie

Baier, T. ; Dupeux, G. ; Herbert, Stefan ; Hardt, Steffen ; Quéré, D. (2013)
Propulsion mechanisms for Leidenfrost solids on ratchets.
In: Physical Review, 87 (2)
doi: 10.1103/PhysRevE.87.021001
Artikel, Bibliographie

Bhattacharyya, S. ; Gopmandal, P. P. ; Baier, T. ; Hardt, Steffen (2013)
Sample dispersion in isotachophoresis with Poiseuille counterflow.
In: Phys. Fluids , 25 (022001)
doi: 10.1063/1.4789967
Artikel, Bibliographie

Seshadri, G. ; Baier, T. (2013)
Effect of electro-osmotic flow on energy conversion on superhydrophobic surfaces.
In: Phys. Fluids , 25 (042002)
doi: 10.1063/1.4802044
Artikel, Bibliographie

Dörr, A. ; Sadiki, A. ; Mehdizadeh, A. (2013)
A discrete model for the apparent viscosity of polydisperse suspensions including maximum packing fraction.
In: J.Rheol., 57
Artikel, Bibliographie

Dupeux, G. ; Baier, T. ; Bacot, V. ; Hardt, Steffen ; Clanet, C. ; Quéré, D. (2013)
Self-propelling uneven Leidenfrost solids.
In: Phys. Fluids , 25 (051704)
doi: 10.1063/1.4807007
Artikel, Bibliographie

Sinha, A. ; Mollah, A. K. ; Hardt, Steffen ; Ganguly, R. (2013)
Particle dynamics and separation at liquid–liquid interfaces.
In: Soft Matter , 9
doi: 10.1039/c3sm00120b
Artikel, Bibliographie

Khnouf, R. ; Goet, G. ; Hardt, Steffen (2013)
Implementation of isotachophoresis in a microfluidic device for the enhamcement of protein immunoassays.
Proc. 2013 Int. Conf. on Microtechnologies in Medicine and Biology,. Marina del Rey, California, USA (10.04.2013-12.04.2013)
Konferenzveröffentlichung, Bibliographie

Varanakkottu, S. N. ; George, S. D. ; Baier, T. ; Hardt, Steffen ; Ewald, M. ; Biesalski, M. (2013)
Particle Manipulation Based on Optically Controlled Free Surface Hydrodynamics.
In: Angew. Chem. Int. Ed., 52
doi: 10.1002/anie.201302111
Artikel, Bibliographie

Hardt, Steffen ; Tiwari, S. ; Baier, T. (2013)
Thermally driven flows between a Leidenfrost solid and a ratchet surface.
In: Phys. Rev. E, 87 (6)
doi: 10.1103/PhysRevE.87.063015.
Artikel, Bibliographie

Goet, G. ; Baier, T. ; Hardt, Steffen ; Sen, A. K. (2013)
Isotachophoresis with emulsions.
In: Biomicrofluidics, 7 (044103)
doi: 10.1063/1.4816347
Artikel, Bibliographie

Eifert, A. ; Baier, T. ; Hardt, Steffen (2013)
Small onset voltages in negative corona discharges using the edges of gold and aluminum foils as nano-structured electrodes.
In: Appl. Phys. Lett., 103 (023114)
doi: 10.1063/1.4813556
Artikel, Bibliographie

2012

Hardt, Steffen ; Hahn, T. (2012)
Microfluidics with aqueous two-phase systems.
In: Lap Chip, 12
doi: 10.1039/c1lc20569b
Artikel, Bibliographie

Schultheis, T. ; Hoheisel, D. ; Xiao, W. ; Spani Molella, L. ; Reithmeier, E. ; Rissing, L. ; Hardt, Steffen (2012)
Performance of an adaptive liquid microlens controlled by a micro coil actuator.
In: Microfluid. Nanofluid., 13
doi: 10.1007/s10404-012-0961-3
Artikel, Bibliographie

Pertaya-Braun, N. ; Baier, T. ; Hardt, Steffen (2012)
Microfluidic centrifuge based on a counterflow configuration.
In: Microfluid. Nanofluid., 12
doi: 10.1007/s10404-011-0875-5
Artikel, Bibliographie

Steffes, C. ; Baier, T. ; Hardt, Steffen (2012)
Corrigendum to “Enabling the enhancement of electroosmotic flow over superhydrophobic surfaces by induced charges”.
In: Colloid. Surface A, 395
doi: 10.1016/j.colsurfa.2011.11.019
Artikel, Bibliographie

Dörr, A. ; Hardt, Steffen (2012)
Electric-double-layer structure close to the three-phase contact line in an electrolyte wetting a solid substrate.
In: Physical Review E, 86 (022601)
doi: 10.1103/PhysRevE.86.022601
Artikel, Bibliographie

Hardt, Steffen ; Herbert, Stefan ; Kunkelmann, C. ; Mahjoob, S. ; Stephan, Peter (2012)
Unidirectional bubble growth in microchannels with asymmetric surface features.
In: International Journal of Heat and Mass Transfer, 55
doi: 10.1016/j.ijheatmasstransfer.2012.07.018
Artikel, Bibliographie

Petzold, U. ; Büchel, A. ; Hardt, Steffen ; Halfmann, T. (2012)
Imaging diffusion in a microfluidic device by third harmonic microscopy.
In: Exp. Fluids, 53
doi: 10.1007/s00348-012-1321-5
Artikel, Bibliographie

Banerjee, U. ; Bit, P. ; Ganguly, R. ; Hardt, Steffen (2012)
Aggregation dynamics of particles in a microchannel due to an applied magnetic field.
In: Microfluidics and Nanofluidics, 13
doi: 10.1007/s10404-012-1053-0
Artikel, Bibliographie

Schönecker, Clarissa ; Baier, T. ; Hardt, Steffen (2012)
The flow of a fluid in Cassie state along a patterned surface and its effective slip length.
(03.12.2012-05.12.2012)
Konferenzveröffentlichung, Bibliographie

Baier, Tobias ; Herbert, Stefan ; Hardt, Steffen (2012)
Leidenfrost solids on structured surfaces.
Proceedings of the 3rd European Conference on Microfluidics. Heidelberg, Germany (03.12.2012-05.12.2012)
Konferenzveröffentlichung, Bibliographie

Dietzel, M. ; Hardt, Steffen (2012)
Streaming potential of an electrolyte in a microchannel with a lateral temperature gradient.
(03.12.2012-05.12.2012)
Konferenzveröffentlichung, Bibliographie

Daschiel, G. ; Baier, T. ; Saal, J. ; Frohnapfel, B. (2012)
On the flow resistance of wide surface structures.
In: PAMM, 12 (1)
doi: 10.1002/pamm.201210273
Artikel, Bibliographie

2011

Pertaya-Braun, N. ; Hardt, Steffen (2011)
Microfluidic extractor based on droplet flow in microchannels.
Konferenzveröffentlichung, Bibliographie

Hahn, T. (2011)
Interfacial electrokinetic transport phenomena and their impact on DNA electrophoresis in microfluidics.
Technische Universität Darmstadt
Dissertation, Erstveröffentlichung

Hahn, T. ; Münchow, G. ; Hardt, Steffen (2011)
Electrophoretic transport of biomolecules across liquid–liquid interfaces.
In: J. Phys.: Condens. Matter, 23 (184107)
doi: 10.1088/0953-8984/23/18/184107
Artikel, Bibliographie

Hahn, T. ; Hardt, Steffen (2011)
Size dependent detachment of DNA molecules from liquid-liquid interfaces.
In: Soft Matter, 7
doi: 10.1039/C1SM05309D
Artikel, Bibliographie

Steffes, Clarissa ; Baier, Tobias ; Hardt, Steffen (2011)
Enabling the enhancement of electroosmotic flow over superhydrophobic surfaces by induced charges.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 376 (1-3)
doi: 10.1016/j.colsurfa.2010.09.002
Artikel, Bibliographie

Donkov, A. ; Tiwari, S. ; Liang, T. ; Hardt, Steffen ; Klar, A. ; Ye, W. (2011)
Momentum and mass fluxes in a gas confined between periodically structured surfaces at different temperatures.
In: Physical Review E, 84 (016304)
doi: 10.1103/PhysRevE.84.016304
Artikel, Bibliographie

Dupeux, G. ; Le Merrer, M. ; Lagubeau, G. ; Clanet, C. ; Hardt, Steffen ; Quéré, D. (2011)
Viscous mechanism for Leidenfrost propulsion on a ratchet.
In: Europhys. Lett., 96 (58001)
doi: 10.1209/0295-5075/96/58001
Artikel, Bibliographie

Das, S. ; Hardt, Steffen (2011)
Electric-double-layer potential distribution in multiple-layer immiscible electrolytes.
In: Physical Review E, 84 (0225502)
doi: 10.1103/PhysRevE.84.022502
Artikel, Bibliographie

Baier, T. ; Schönfeld, F. ; Hardt, Steffen (2011)
Analytical approximations to the flow field induced by electroosmosis during isotachophoretic transport through a channel.
In: Journal of Fluid Mechanics, 682
doi: 10.1017/jfm.2011.250
Artikel, Bibliographie

Hahn, T. ; Hardt, Steffen (2011)
Concentration and Size Separation of DNA Samples at Liquid–Liquid Interfaces.
In: Analytical Chemistry, 83
doi: 10.1021/ac201228v
Artikel, Bibliographie

Goet, G. ; Baier, T. ; Hardt, Steffen (2011)
Transport and separation of micron sized particles at isotachophoretic transition zones.
In: Biomicrofluidics, 5 (014109)
doi: 10.1063/1.3555194
Artikel, Bibliographie

Abele, Eberhard ; Fischer, Jakob ; Hardt, Steffen ; Manukyan, S. ; Roisman, Ilia V. (2011)
Komplexe Oberflächen mit maßgeschneiderter Benetzbarkeit.
In: forschen 1/2011
Artikel, Bibliographie

Hardt, Steffen (2011)
Microreactors - Modeling and Simulation.
In: Ullmann’s Encyclopedia of Technical Chemistry
Buchkapitel, Bibliographie

2010

Schilder, Boris ; Man, Simon Yu Ching ; Kasagi, Nobuhide ; Hardt, Steffen ; Stephan, Peter (2010)
Flow Visualization and Local Measurement of Forced Convection Heat Transfer in a Microtube.
In: Journal of Heat Transfer-Transactions of the Asme, 132 (3)
doi: 10.1115/1.4000046
Artikel, Bibliographie

Baier, Tobias ; Steffes, Clarissa ; Hardt, Steffen (2010)
Thermocapillary flow on superhydrophobic surfaces.
In: Physical Review E, 82 (037301)
Artikel, Bibliographie

Mohanty, S. ; Baier, T. ; Schönfeld, F. (2010)
Three dimensional CFD model for continuous immunomagnetophoretic cell capture in BioMEMS.
In: Biochem. Eng. J., 51
Artikel, Bibliographie

Xiao, W. ; Hardt, Steffen (2010)
An adaptive liquid microlens driven by a ferrofluidic transducer.
In: J. Micromech. Microeng., 20 (055032)
doi: 10.1088/0960-1317/20/5/055032
Artikel, Bibliographie

Ganguly, R. ; Hahn, T. ; Hardt, Steffen (2010)
Magnetophoretic mixing for in-situ immunochemical binding on magnetic beads in a microfluidic channel.
In: Microfluid. Nanofluid., 8
doi: 10.1007/s10404-009-0504-8
Artikel, Bibliographie

Hardt, Steffen ; Goet, G. ; Baier, T. (2010)
Expanding the scope of isotachophoresis in microfluidic operations.
Proc. 2nd European Conference on Microfluidics. Toulouse (08.12.2010-10.12.2010)
Konferenzveröffentlichung, Bibliographie

Baier, T. ; Steffes, C. ; Hardt, Steffen (2010)
Numerical modeling of thermocapillary flow on superhydrophobic surfaces.
Proc. µTAS2010, 14th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. Groningen (03.10.2010-07.10.2010)
Konferenzveröffentlichung, Bibliographie

Namboodiri, V. S. ; George, S. D. ; Hardt, Steffen (2010)
Photodegradation of optically trapped polystyrene beads at 442 nm.
Proc. ICCESSE 2010. Amsterdam (28.09.2010-30.09.2010)
Konferenzveröffentlichung, Bibliographie

George, S. D. ; Namboodiri, V. S. ; Hardt, Steffen (2010)
Laser induced photoswitching of azobenzene incorporated in PDMS films.
SPIE, Linear and Nonlinear Optics of Organic Materials X. San Diego (01.08.2010-05.08.2010)
Konferenzveröffentlichung, Bibliographie

Löffler, K. ; Yu, H. ; Hardt, Steffen ; Gambaryan-Roisman, Tatiana ; Stephan, Peter (2010)
Heat transfer and evaporation of falling liquid films on surfaces with advanced three-dimensional periodic structures: Experiments and numerical simulations.
Proc. 8th Int. Conf. Nanochannels, Microchannels, Minichannels. Montreal (01.08.2010-05.08.2010)
Konferenzveröffentlichung, Bibliographie

Xiao, W. ; Hardt, Steffen (2010)
The dynamic behavior of an adaptive liquid microlens driven by a ferrofluidic transducer.
Proc. 8th Int. Conf. Nanochannels, Microchannels, Minichannels. M (01.08.2010-05.08.2010)
Konferenzveröffentlichung, Bibliographie

Ganguly, R. ; Hahn, T. ; Hardt, Steffen (2010)
Characterization of magnetic bead-based microfluidic mixing for bio-MEMS applications.
Proc. 20th National & 9th International ISHMT-ASME Heat and Mass Transfer Conference. Mumbai (04.01.2010-06.01.2010)
Konferenzveröffentlichung, Bibliographie

2009

Schönfeld, Friedhelm ; Goet, Gabriele ; Baier, Tobias ; Hardt, Steffen (2009)
Transition zone dynamics in combined isotachophoretic and electro-osmotic transport.
In: Physics of Fluids, 21 (9)
doi: 10.1063/1.3222866
Artikel, Bibliographie

Baier, Tobias ; Mohanty, S. ; Drese, K. S. ; Rampf, F. ; Kim, J. ; Schönfeld, F. (2009)
Modelling Immunomagnetic Cell Capture in CFD.
In: Microfluid. Nanofluid., 7
Artikel, Bibliographie

Goet, G. ; Baier, T. ; Hardt, Steffen (2009)
Micro contactor based on isotachophoretic sample transport.
In: Lab Chip, 9
Artikel, Bibliographie

Tiwari, S. ; Klar, A. ; Hardt, Steffen (2009)
A particle-particle hybrid method for kinetic and continuum equations.
In: J. Comput. Phys., 228
Artikel, Bibliographie

Schönfeld, F. ; Hardt, Steffen (2009)
Dynamic contact angles in CFD simulations.
In: Computers and Fluids, 38
Artikel, Bibliographie

Nikolaidis, G. ; Baier, T. ; Zapf, R. ; Kolb, G. ; Hessel, V. ; Maier, W. F. (2009)
Kinetic study of CO preferential oxidation over Pt-Rh[gamma]-A12O3 catalyst in a micro-structured recycle reactor.
In: Catal. Today, 145
Artikel, Bibliographie

Baier, Tobias ; Hansen-Hagge, T. E. ; Gransee, R. ; Crombé, A. ; Schmahl, S. ; Paulus, C. ; Drese, K. S. ; Keegan, H. ; Martin, C. ; O'Leary, J. J. ; Furuberg, L. ; Solli, L. ; GrØnn, P. ; Falang, I. M. ; Karlgård, A. ; Gulliksen, A. ; Karlsen, F. (2009)
Hands-free sample preparation platform for nucleic acid analysis.
In: Lab on a Chip, 9
Artikel, Bibliographie

Hahn, T. ; Kurz, A. ; Hardt, Steffen (2009)
Size separation of nucleic acids by electrophoretic transport across fluid boundaries.
Proc. µTAS2009, 13th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. Jeju, Korea (01.11.2009-05.11.2009)
Konferenzveröffentlichung, Bibliographie

Gall, M. ; Baier, T. ; Baumann, H. ; Bindig, R. ; Henke, P. ; Latta, D. ; Schmitz, H. ; Schreiner, H.-J. ; Thielicke, B. (2009)
Development of a Peristaltic Micro Pump System – Conceptual Design and Optimization by Simulation.
Proc. Adaptronic Congress 2009. Berlin (19.05.2009-20.05.2009)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen ; Tiwari, S. ; Klar, A. (2009)
Momentum transfer to nanoobjects between isothermal parallel plates.
In: Microfluidics and Nanofluidics, 6 (4)
doi: 10.1007/s10404-008-0327-z
Artikel, Bibliographie

Donkov, A. A. ; Hardt, Steffen ; Tiwari, S. ; Klar, A. (2009)
Coupling of Heat and Momentum Transfer Between Nanostructured Surfaces.
doi: 10.1115/MNHMT2009-18061
Konferenzveröffentlichung, Bibliographie

Stephan, Peter ; Hardt, Steffen ; Kunkelmann, C. ; Schweizer, N. ; Sielaff, Axel (2009)
Wärmeübertragung – vom Frühstücksei zur Chipkühlung.
In: forschen 2/2009
Artikel, Bibliographie

2008

Furuberg, L. ; Mielnik, M. ; Gulliksen, A. ; Solli, L. ; Johansen, Ib-R. ; Voitel, J. ; Baier, T. ; Riegger, L. ; Karlsen, F. (2008)
RNA amplification chip with parallel microchannels and droplet positioning using capillary valves.
In: Microsyst. Technol., 14
Artikel, Bibliographie

Münchow, G. ; Hardt, Steffen ; Schönfeld, F. ; Graf, K. H. (2008)
Protein diffusion across the interface of aqueous two-phase systems.
In: Langmuir, 24
Artikel, Bibliographie

Schönfeld, F. ; Graf, K. ; Hardt, Steffen ; Butt, Hans-Jürgen (2008)
Time of evaporation of sessile liquid drops in still air with constant contact radius.
In: Int. J. Heat Mass Transfer, 51
Artikel, Bibliographie

Hardt, Steffen ; Wondra, F. (2008)
Evaporation Model for interfacial flows based on a continuum-field representation of the source terms.
In: J. Comput. Phys., 227
Artikel, Bibliographie

Baier, T. ; Kolb, G. ; Schürer, J. ; Tiemann, D. ; Ziogas, A. ; Ehwald, H. ; Alphonse, P. (2008)
A Microstructured 5 kW Complete Fuel Processor for Iso-octane as Hydrogen Supply system for Mobile Auxiliary Power Units Part I – Development of Autothermal Reforming Catalyst and Reactor.
In: Chem. Eng. J., 137
Artikel, Bibliographie

Kolb, G. ; Baier, T. ; Schürer, J. ; Tiemann, D. ; Ziogas, A. ; Specchia, S. ; Galletti, C. ; Germani, G. ; Schuurman, Y. (2008)
A Microstructured 5 kW Complete Fuel Processor for Iso-octane as Hydrogen Supply system for Mobile Auxiliary Power Units Part II – Development of water-gas shift and preferential oxidation catalysts reactor and assembly of the fuel Processor.
In: Chem. Eng. J., 138
Artikel, Bibliographie

Schönfeld, F. ; Goet, G. ; Drese, K. S. ; Hardt, Steffen (2008)
Single-phase digital microfluidics based on isotachophoretic transport.
Proc. µTAS2008, 12th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. San Diego (12.10.2008-16.10.2008)
Konferenzveröffentlichung, Bibliographie

Baier, T. ; Hansen-Hagge, T. E. ; Gransee, R. ; Crombé, A. ; Schmahl, S. ; Drese, K. S. ; GrØnn, P. ; Solli, L. ; Falang, I. M. ; Martin, C. ; Keegan, H. ; Furuberg, L. (2008)
Automated chip-based extraction of HPV mRNA from cervical sampler.
Proc. µTAS2008, 12th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. San Diego (12.10.2008-16.10.2008)
Konferenzveröffentlichung, Bibliographie

Mohanty, S. ; Baier, T. ; Schönfeld, F. (2008)
CFD Modelling of Cell Capture in BioMEMS.
Lecture Notes in Engineering and Computer Science; World Congress on Engineering and Computer Science 2008. San Francisco (22.10.2008-24.10.2008)
Konferenzveröffentlichung, Bibliographie

Schilder, B. ; Yu, S. C. M. ; Kasagi, N. ; Hardt, Steffen ; Stephan, Peter (2008)
Local measurement of forced convection heat transfer in a micro glass tube.
In: ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels
doi: 10.1115/ICNMM2008-62054
Buchkapitel, Bibliographie

Baier, T. ; Mohanty, S. ; Drese, K. S. ; Rampf, F. R. ; Schönfeld, F. (2008)
Modelling Immunomagnetic Cell Capture in CFD.
Proc. Sixth International ASME Conference on Nanochannels, Microchannels and Minichannels, ICNMM2008. Darmstadt (23.06.2008-25.06.2008)
Konferenzveröffentlichung, Bibliographie

Schreiner, H. J. ; Baier, T. ; Baumann, H. ; Bindig, R. ; Gall, M. ; Schmitz, H. ; Thielicke, B. (2008)
Development of an Implantable Peristaltic Micropump System.
ACTUATOR 08. (09.06.2008-11.06.2008)
Konferenzveröffentlichung, Bibliographie

2007

Hardt, Steffen ; Schönfeld, F. (2007)
Microfluidic Technologies for Miniaturized Analysis Systems.
Buch, Bibliographie

Hardt, Steffen ; Baier, T. (2007)
A computational model for heat transfer in multichannel microreactors.
In: AIChE J., 53
Artikel, Bibliographie

Münchow, G. ; Hardt, Steffen ; Kutter, J. P. ; Drese, K. S. (2007)
Electrophoretic partitioning of proteins in two-phase microflow.
In: Lab Chip, 7
Artikel, Bibliographie

Hardt, Steffen ; Schilder, B. ; Tiemann, D. ; Kolb, G. ; Hessel, V. ; Stephan, Peter (2007)
Analysis of flow patterns emerging during evaporation in parallel microchannels.
In: International Journal of Heat and Mass Transfer, 50 (1-2)
Artikel, Bibliographie

Men, Y. ; Hessel, V. ; Löb, P. ; Löwe, H. ; Werner, B. ; Baier, T. (2007)
Determination of the segregation index to sense the mixing quality of pilot- and production-scale microstructured mixers.
In: Chem. Eng. Res. Des., 85
Artikel, Bibliographie

Baier, T. ; Kolb, G. (2007)
Temperature control of the water gas shift reaction in micro structured reactors.
In: Chem. Eng. Sci., 62
Artikel, Bibliographie

Baier, T. ; Hardt, Steffen (2007)
A mean-field model for heat transfer in multichannel microreactors.
In: AIChE J., 53
Artikel, Bibliographie

Hardt, Steffen ; Schönfeld, F. (2007)
Microfluidics: Fundamentals and Engineering Concepts.
In: Microfluidic Technologies for Miniaturized Analysis Systems
Buchkapitel, Bibliographie

Hardt, Steffen (2007)
Modeling and Simulation of Microreactors.
In: Modeling of Process Intensification
Buchkapitel, Bibliographie

Münchow, G. ; Hardt, Steffen ; Kutter, J. P. ; Drese, K. S. (2007)
Continuous separation of proteins and cells by two-phase electrophoresis in microchannels.
Proc. µTAS2007, 11th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. Paris (07.10.2007-11.10.2007)
Konferenzveröffentlichung, Bibliographie

Schilder, B. ; Zorbach, I. ; Hardt, Steffen ; Stephan, Peter ; Wondra, F. ; Klotzbücher, T. (2007)
Experimental investigation of fuel evaporation on microstructured surfaces for microcombustion.
Proc. 6th Int. Conf. Enhanced, Compact and Ultra-Compact Heat Exchangers. Potsdam (16.09.2007-21.09.2007)
Konferenzveröffentlichung, Bibliographie

Furuberg, L. ; Mielnik, M. ; Johansen, Ib-R. ; Voitel, J. ; Gulliksen, A. ; Solli, L. ; Karlsen, F. ; Baier, T. ; Schönfeld, F. ; Drese, K. S. ; Keegan, H. ; Martin, C. ; O'Leary, J. J. ; Riegger, L. ; Koltay, P. (2007)
The MicroActice project: automatic detection of disease-related molecular cell activity.
Proc. SPIE.
Konferenzveröffentlichung, Bibliographie

2006

Schönfeld, F. ; Hardt, Steffen ; Böhm, M. ; Püschl, R. J. ; Walder, M. ; Wenclawiak, B. (2006)
Electroosmotic flow patterning using microfluidic delay loops.
In: Lab on a chip, 6 (12)
Artikel, Bibliographie

Hardt, Steffen ; Pennemann, H. ; Schönfeld, F. (2006)
Theoretical and experimental characterization of a low-Reynolds number split-and-recombine mixer.
In: Microfluidics and Nanofluidics, 2 (3)
Artikel, Bibliographie

Münchow, G. ; Hardt, Steffen ; Kutter, J. P. ; Drese, K. S. (2006)
Protein transport and concentration by electrophoresis in two-phase microflows.
In: Journal of the Association for Laboratory Automation, 11 (6)
Artikel, Bibliographie

2005

Meschke, F. ; Riebler, G. ; Hessel, V. ; Schürer, J. ; Baier, T. (2005)
Hermetic gas-tight ceramic microreactors.
In: Chem. Eng. Technol., 28
Artikel, Bibliographie

Baier, T. ; Drese, K. S. ; Schönfeld, F. ; Schwab, U. (2005)
A µ-Fluidic Mixing Network.
In: Chem. Eng. Technol., 28
Artikel, Bibliographie

Münchow, G. ; Dadic, D. ; Doffing, F. ; Hardt, Steffen ; Drese, K. S. (2005)
Automated chip-based device for simple and fast nucleic acid amplification.
In: Expert Rev. Mol. Diagn., 5
Artikel, Bibliographie

Hardt, Steffen (2005)
An extended VOF method for micro flows with short-range interactions between fluid interfaces.
In: Phys. Fluids, 17
Artikel, Bibliographie

Hardt, Steffen ; Jiang, F. ; Schönfeld, F. (2005)
A computational analysis of the hydrodynamic instability of a liquid jet focused into a converging microchannel.
In: Int. J. Multiphase Flow, 31
Artikel, Bibliographie

Hardt, Steffen ; Drese, K. S. ; Hessel, V. ; Schönfeld, F. (2005)
Passive micro mixers for applications in the micro reactor and µTAS field.
In: Microfluid. Nanofluid., 1
Artikel, Bibliographie

Cominos, V. ; Hardt, Steffen ; Hessel, V. ; Kolb, G. ; Löwe, H. ; Wichert, M. ; Zapf, R. (2005)
A methanol steam micro-reformer for low power fuel cell applications.
In: Chem. Eng. Comm., 192
Artikel, Bibliographie

Pennemann, H. ; Hardt, Steffen ; Hessel, V. ; Löb, P. ; Weise, F. (2005)
Micromixer based liquid/liquid dispersion.
In: Chem. Eng. Technol., 28
Artikel, Bibliographie

Münchow, G. ; Drese, K. S. ; Hardt, Steffen ; Kutter, J. P. (2005)
Towards two-phase electrophoresis in microchannels.
Proc. of µTAS2005, 9th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. Boston (09.10.2005-13.10.2005)
Konferenzveröffentlichung, Bibliographie

Schönfeld, F. ; Hardt, Steffen (2005)
Microfluidics and induced-charge electrokinetic flows.
Proc. of µTAS2005, 9th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. Boston (09.10.2005-13.10.2005)
Konferenzveröffentlichung, Bibliographie

Schönfeld, F. ; Hardt, Steffen (2005)
Flow patterning by phase-shifted electroosmotic flows.
Proc. of µTAS2005, 9th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. Boston (09.10.2005-13.10.2005)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen (2005)
Design paradigms and methodologies for microfluidics.
Proc. of Nanotech2005, 2005 NSTI Nanotechnology Conference and Trade Show. Anaheim, Californien (08.05.2005-12.05.2005)
Konferenzveröffentlichung, Bibliographie

Baier, T. ; Drese, K. S. (2005)
Modelling Counter Current Micro Heat Exchangers.
ECI Conference Heat Transfer and Fluid Flow in Microscale, HTFFM 2005. Castelvecchio Pascoli (25.09.2005-30.09.2005)
Konferenzveröffentlichung, Bibliographie

2004

Jiang, F. ; Drese, K. S. ; Hardt, Steffen ; Küpper, M. ; Schönfeld, F. (2004)
Helical flows and chaotic mixing in curved microchannels.
In: AIChE J., 50
Artikel, Bibliographie

Löb, P. ; Drese, K. S. ; Hessel, V. ; Hardt, Steffen ; Hofmann, C. ; Löwe, H. ; Schenk, R. ; Schönfeld, F. ; Werner, B. (2004)
Steering of liquid mixing speed in interdigital micro mixers – from very fast to deliberately slow mixing.
In: Chem. Eng. Technol., 27
Artikel, Bibliographie

Stephan, Peter ; Hardt, Steffen (2004)
Wärme- und Stofftransport in mikrofluidischen Mehrphasensystemen: Forschungsaktivitäten an der TU Darmstadt.
In: Chemie Ingenieur Technik, 76 (5)
Artikel, Bibliographie

Schönfeld, F. ; Hardt, Steffen ; Hessel, V. ; Hofmann, C. (2004)
Optimiertes distributives Mischen mittels ‘chaotischer’ Multilamination.
In: Chem. Ing. Tech., 76
Artikel, Bibliographie

Schönfeld, F. ; Hardt, Steffen (2004)
Simulation of helical flows in microchannels.
In: AIChE J., 50
Artikel, Bibliographie

Griebel, A. ; Rund, S. ; Schönfeld, F. ; Dörner, W. ; Konrad, R. ; Hardt, Steffen (2004)
Integrated polymer chip for two-dimensional capillary gel electrophoresis.
In: Lab Chip, 4
Artikel, Bibliographie

Hessel, V. ; Hardt, Steffen ; Löwe, H. (2004)
Chemical Micro Process Engineering.
Buch, Bibliographie

Baier, T. ; Drese, K. S. (2004)
CFD and analytical modelling of micro heat exchangers.
1st NAFEMS CFD-Seminar. Niedernhausen bei Wiebaden, Germany (03.05.2004-04.05.2004)
Konferenzveröffentlichung, Bibliographie

Drese, K. S. ; Münchow, G. ; Dadic, D. ; Doffing, F. ; Hardt, Steffen ; Sörensen, O. ; Müller, T. ; Klein-Vehne, A. (2004)
Rapid polymerase chain reaction in polymeric microchips driven by ferrofluids.
Proc. of µTAS2004, 8th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. Malmö, Sweden (26.09.2004-30.09.2004)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen ; Baier, T. ; Schönfeld, F. (2004)
Computational models and methods for microfluidics: from flow distributions to mixing.
Proc. of ECCOMAS2004, 4th European Congress on Computational Methods in Applied Sciences and Engineering. Jyväskylä, Finland (24.07.2004-28.07.2004)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen ; Dadic, D. ; Doffing, F. ; Drese, K. S. ; Jiang, F. ; Münchow, G. ; Sörensen, O. (2004)
Development of a slug-flow PCR chip with minimum heating cycle times.
Proc. of Nanotech2004, 2004 NSTI Nanotechnology Conference and Trade Show. Boston, MA (07.03.2004-11.03.2004)
Konferenzveröffentlichung, Bibliographie

Schönfeld, F. ; Drese, K. S. ; Hardt, Steffen ; Hessel, V. ; Hofmann, C. (2004)
Optimized distributive µ-mixing by “chaotic” multilamination.
Proc. of Nanotech2004, 2004 NSTI Nanotechnology Conference and Trade Show. Boston, MA (07.03.2004-11.03.2004)
Konferenzveröffentlichung, Bibliographie

2003

Hessel, V. ; Hardt, Steffen ; Schönfeld, F. ; Löwe, H. (2003)
Laminar mixing in interdigital micromixers with different mixing chambers – Part 1: Experimental characterization.
In: AIChE J., 49
Artikel, Bibliographie

Hardt, Steffen ; Schönfeld, F. (2003)
Laminar mixing in interdigital micromixers with different mixing chambers – Part 2: Numerical simulations.
In: AIChE J., 49
Artikel, Bibliographie

Hardt, Steffen ; Ehrfeld, W. ; Hessel, V. ; Vanden Bussche, K. M. (2003)
Strategies for size reduction of microreactors by heat transfer enhancement effects.
In: Chem. Eng. Comm., 190
Artikel, Bibliographie

Sörensen, O. ; Drese, K. S. ; Hardt, Steffen (2003)
Liquid slug transport, mixing and synchronization driven by ferrofluids.
Proc. of µTAS2003, 7th Int. Conf. Miniaturized Systems for Chemistry and Life Sciences. Squaw Valley, CA (05.10.2003-09.10.2003)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen (2003)
Modeling hydrodynamic focusing of liquid jets in microchannels.
Proc. of the 2nd M.I.T. Conference on Computational Fluid and Solid Mechanics. Cambridge, MA (17.06.2003-20.06.2003)
Konferenzveröffentlichung, Bibliographie

Hessel, V. ; Hardt, Steffen ; Löwe, H. (2003)
Chemical processing with microdevices – device/plant concepts, selected applications and state of scientific/commercial implementation.
Proc. of ICheaP-6, 6th Italian Conference on Chemical and Process Engineering. Pisa, Italy (08.06.2003-11.06.2003)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen ; Drese, K. S. ; Griebel, A. ; Rund, S. ; Schönfeld, F. (2003)
Lab-on-a-Chip-Systeme für die medizinische Diagnostik.
Proc. of 1st EFDS-Workshop “Funktionalisierung von Oberflächen für die Biotechnologie”. Dresden, Germany (11.03.2003-11.03.2003)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen ; Pennemann, H. ; Jiang, F. (2003)
CFD-based optimization of gas/liquid microreactors with droplet and bubble transport.
Proc. of Nanotech2003, 2003 NSTI Nanotechnology Conference and Trade Show. San Francisco, CA (23.02.2003-27.02.2003)
Konferenzveröffentlichung, Bibliographie

Goet, G. ; Hardt, Steffen (2003)
Pumpen kleinster Flüssigkeitsmengen mit Hilfe von elektrischen Feldern.
In: Inno 25
Artikel, Bibliographie

2002

Pumera, M. ; Wang, J. ; Löwe, H. ; Hardt, Steffen (2002)
Poly(methylmethacrylate) microchip electrophoresis device with thick-film amperometric detector: towards fully disposable Lab-on-a-Chip.
In: JALA, 7
Artikel, Bibliographie

Pumera, M. ; Wang, J. ; Opekar, F. ; Jelinek, I. ; Feldman, J. ; Löwe, H. ; Hardt, Steffen (2002)
Contactless conductivity detector for microchip capillary electrophoresis.
In: Anal. Chem., 74
Artikel, Bibliographie

Hardt, Steffen (2002)
Simulation von Mikrosystemen.
In: Handbuch Mikrotechnik
Buchkapitel, Bibliographie

Hardt, Steffen ; Schönfeld, F. (2002)
Simulation of hydrodynamics in multi-phase microreactors.
Proc. of WCCM V, 5th World Congress on Computational Mechanics. Vienna, Austria (07.07.2002-12.07.2002)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen ; Doffing, F. ; Pennemann, H. (2002)
Simulation of hydrodynamic dispersion in gas/liquid microreactors.
Proc. of MSM2002, 5th Int. Conf. Modeling and Simulation of Microsystems. San Juan, Puerto Rico (22.04.2002-25.04.2002)
Konferenzveröffentlichung, Bibliographie

Hessel, V. ; Dietrich, T. ; Freitag, A. ; Hardt, Steffen ; Hofmann, C. ; Löwe, H. ; Pennemann, H. ; Ziogas, A. (2002)
Fast mixing in interdigital micromixers achieved by means of extreme focussing.
Proc. of IMRET6, 6th Int. Conf. Microreaction Technology. New Orleans, LA (10.03.2002-14.03.2002)
Konferenzveröffentlichung, Bibliographie

Hardt, Steffen ; Dietrich, T. ; Freitag, A. ; Hessel, V. ; Löwe, H. ; Hofmann, C. ; Orosar, A. ; Schönfeld, F. ; Vanden Bussche, K. M. (2002)
Radial and tangential injection of liquid/liquid and gas/liquid streams and focussing thereof in a special cyclone micromixer.
Proc. of IMRET6, 6th Int. Conf. Microreaction Technology. New Orleans, LA (10.03.2002-14.03.2002)
Konferenzveröffentlichung, Bibliographie