Parmar, Devang ; Dehm, Simone ; Peyyety, Naga Anirudh ; Kumar, Sandeep ; Krupke, Ralph (2024)
Enhanced broadband photodetection with geometry and interface engineered nanocrystalline graphite.
In: Advanced Sensor Research, 3 (2)
doi: 10.1002/adsr.202300134
Artikel, Bibliographie

Shyam Kumar, C. N. ; Possel, Clemens ; Dehm, Simone ; Chakravadhanula, Venkata Sai Kiran ; Wang, Di ; Wenzel, Wolfgang ; Krupke, Ralph ; Kübel, Christian (2024)
Graphitizability of polymer thin films: an in situ TEM study of thickness effects on nanocrystalline graphene/glassy carbon formation.
In: Macromolecular Materials and Engineering, 309 (1)
doi: 10.1002/mame.202300230
Artikel, Bibliographie

Kumar, Sandeep ; Dehm, Simone ; Wieland, Laura ; Chandresh, Abhinav ; Heinke, Lars ; Flavel, Benjamin S. ; Krupke, Ralph (2024)
Sensitive detection of a gaseous analyte with low‐power metal–organic framework functionalized carbon nanotube transistors.
In: Advanced Electronic Materials, 10 (1)
doi: 10.1002/aelm.202300533
Artikel, Bibliographie

Özdemir, Ali Deniz ; Barua, Pramit ; Pyatkov, Felix ; Hennrich, Frank ; Chen, Yuan ; Wenzel, Wolfgang ; Krupke, Ralph ; Fediai, Artem (2021)
Contact spacing controls the on-current for all-carbon field effect transistors.
In: Communications Physics, 4 (1)
doi: 10.1038/s42005-021-00747-5
Artikel, Bibliographie

Kumar, Sandeep ; Pramudya, Yohanes ; Müller, Kai ; Chandresh, Abhinav ; Dehm, Simone ; Heidrich, Shahriar ; Fediai, Artem ; Parmar, Devang ; Perera, Delwin ; Rommel, Manuel ; Heinke, Lars ; Wenzel, Wolfgang ; Wöll, Christof ; Krupke, Ralph (2021)
Sensing Molecules with Metal–Organic Framework Functionalized Graphene Transistors.
In: Advanced Materials, 33 (43)
doi: 10.1002/adma.202103316
Artikel, Bibliographie

Janissek, Alexander ; Lenz, Jakob ; Giudice, Fabio del ; Gaulke, Marco ; Pyatkov, Felix ; Dehm, Simone ; Hennrich, Frank ; Wei, Li ; Chen, Yuan ; Fediai, Artem ; Kappes, Manfred ; Wenzel, Wolfgang ; Krupke, Ralph ; Weitz, R. Thomas (2021)
Ionic liquid gating of single-walled carbon nanotube devices with ultra-short channel length down to 10 nm.
In: Applied Physics Letters, 118 (6)
doi: 10.1063/5.0034792
Artikel, Bibliographie

Li, Wenshan ; Hennrich, Frank ; Flavel, Benjamin S. ; Dehm, Simone ; Kappes, Manfred ; Krupke, Ralph (2021)
Principles of carbon nanotube dielectrophoresis.
In: Nano Research, 14 (7)
doi: 10.1007/s12274-020-3183-0
Artikel, Bibliographie

Kumar, Sandeep ; Dagli, Daghan ; Dehm, Simone ; Das, Chittaranjan ; Wei, Li ; Chen, Yuan ; Hennrich, Frank ; Krupke, Ralph (2020)
Vanishing Hysteresis in Carbon Nanotube Transistors Embedded in Boron Nitride/Polytetrafluoroethylene Heterolayers.
In: Physica status solidi (RRL) - Rapid research letters, 14 (8)
doi: 10.1002/pssr.202000193
Artikel, Bibliographie

Nagyte, Vaiva ; Kelly, Daniel J. ; Felten, Alexandre ; Picardi, Gennaro ; Shin, YuYoung ; Alieva, Adriana ; Worsley, Robyn E. ; Parvez, Khaled ; Dehm, Simone ; Krupke, Ralph ; Haigh, Sarah J. ; Oikonomou, Antonios ; Pollard, Andrew J. ; Casiraghi, Cinzia (2020)
Raman Fingerprints of Graphene Produced by Anodic Electrochemical Exfoliation.
In: Nano Letters, 20 (5)
doi: 10.1021/acs.nanolett.0c00332
Artikel, Bibliographie

Gaulke, Marco ; Janissek, Alexander ; Peyyety, Naga Anirudh ; Alamgir, Imtiaz ; Riaz, Adnan ; Dehm, Simone ; Li, Han ; Lemmer, Uli ; Flavel, Benjamin S. ; Kappes, Manfred M. ; Hennrich, Frank ; Wei, Li ; Chen, Yuan ; Pyatkov, Felix ; Krupke, Ralph (2020)
Low-Temperature Electroluminescence Excitation Mapping of Excitons and Trions in Short-Channel Monochiral Carbon Nanotube Devices.
In: ACS Nano, 14 (3)
doi: 10.1021/acsnano.9b07207
Artikel, Bibliographie

Li, Han ; Gordeev, Georgy ; Garrity, Oisin ; Peyyety, Naga Anirudh ; Selvasundaram, Pranauv Balaji ; Dehm, Simone ; Krupke, Ralph ; Cambré, Sofie ; Wenseleers, Wim ; Reich, Stephanie ; Zheng, Ming ; Fagan, Jeffrey A. ; Flavel, Benjamin S. (2020)
Separation of Specific Single-Enantiomer Single-Wall Carbon Nanotubes in the Large-Diameter Regime.
In: ACS Nano, 14 (1)
doi: 10.1021/acsnano.9b08244
Artikel, Bibliographie

Kumar, C. N. Shyam ; Konrad, Manuel ; Chakravadhanula, Venkata Sai Kiran ; Dehm, Simone ; Wang, Di ; Wenzel, Wolfgang ; Krupke, Ralph ; Kübel, Christian (2019)
Nanocrystalline graphene at high temperatures: insight into nanoscale processes.
In: Nanoscale Advances, 1 (7)
doi: 10.1039/C9NA00055K
Artikel, Bibliographie

Selvasundaram, Pranauv Balaji ; Kraft, Rainer ; Li, Wenshan ; Fischer, Regina ; Kappes, Manfred M. ; Hennrich, Frank ; Krupke, Ralph (2019)
Measuring in Situ Length Distributions of Polymer-Wrapped Monochiral Single-Walled Carbon Nanotubes Dispersed in Toluene with Analytical Ultracentrifugation.
In: Langmuir, 35 (10)
doi: 10.1021/acs.langmuir.9b00005
Artikel, Bibliographie

Giambra, Marco A. ; Benfante, Antonio ; Pernice, Riccardo ; Miseikis, Vaidotas ; Fabbri, Filippo ; Reitz, Christian ; Pernice, Wolfram H. P. ; Krupke, Ralph ; Calandra, Enrico ; Stivala, Salvatore ; Busacca, Alessandro C. ; Danneau, Romain (2019)
Graphene Field-Effect Transistors Employing Different Thin Oxide Films: A Comparative Study.
In: ACS Omega, 4 (1)
doi: 10.1021/acsomega.8b02836
Artikel, Bibliographie

Gordeev, Georgy ; Flavel, Benjamin ; Krupke, Ralph ; Kusch, Patryk ; Reich, Stephanie (2019)
Asymmetry of resonance Raman profiles in semiconducting single-walled carbon nanotubes at the first excitonic transition.
In: Physical Review B, 99 (4)
doi: 10.1103/PhysRevB.99.045404
Artikel, Bibliographie

Riaz, Adnan ; Alam, Asiful ; Selvasundaram, Pranauv Balaji ; Dehm, Simone ; Hennrich, Frank ; Kappes, Manfred M. ; Krupke, Ralph (2019)
Near-Infrared Photoresponse of Waveguide-Integrated Carbon Nanotube-Silicon Junctions.
In: Advanced Electronic Materials, 5 (1)
doi: 10.1002/aelm.201800265
Artikel, Bibliographie

Engel, Michael ; Farmer, Damon B. ; Azpiroz, Jaione Tirapu ; Seo, Jung-Woo T. ; Kang, Joohoon ; Avouris, Phaedon ; Hersam, Mark C. ; Krupke, Ralph ; Steiner, Mathias (2018)
Graphene-enabled and directed nanomaterial placement from solution for large-scale device integration.
In: Nature Communications, 9 (1)
doi: 10.1038/s41467-018-06604-4
Artikel, Bibliographie

Du, Renjun ; Liu, Ming-Hao ; Mohrmann, Jens ; Wu, Fan ; Krupke, Ralph ; Löhneysen, Hilbert von ; Richter, Klaus ; Danneau, Romain (2018)
Tuning Anti-Klein to Klein Tunneling in Bilayer Graphene.
In: Physical Review Letters, 121 (12)
doi: 10.1103/PhysRevLett.121.127706
Artikel, Bibliographie

Kraft, Rainer ; Mohrmann, Jens ; Du, Renjun ; Selvasundaram, Pranauv Balaji ; Irfan, Muhammad ; Kanilmaz, Umut Nefta ; Wu, Fan ; Beckmann, Detlef ; Löhneysen, Hilbert von ; Krupke, Ralph ; Akhmerov, Anton ; Gornyi, Igor ; Danneau, Romain (2018)
Tailoring supercurrent confinement in graphene bilayer weak links.
In: Nature Communications, 9 (1)
doi: 10.1038/s41467-018-04153-4
Artikel, Bibliographie

Benfante, Antonio ; Giambra, Marco A. ; Pernice, Riccardo ; Stivala, Salvatore ; Calandra, Enrico ; Parisi, Antonino ; Cino, Alfonso C. ; Dehm, Simone ; Danneau, Romain ; Krupke, Ralph ; Busacca, Alessandro C. (2018)
Employing Microwave Graphene Field Effect Transistors for Infrared Radiation Detection.
In: IEEE Photonics Journal, 10 (2)
doi: 10.1109/JPHOT.2018.2807923
Artikel, Bibliographie

Yekani, Rana ; Rusak, Evgenia ; Riaz, Adnan ; Breitung, Ben ; Dehm, Simone ; Perera, Delwin ; Rohrer, Jochen ; Rockstuhl, Carsten ; Krupke, Ralph (2018)
Formation of nanocrystalline graphene on germanium.
In: Nanoscale, 10
doi: 10.1039/C8NR01261J
Artikel, Bibliographie

Gordeev, Georgy ; Jorio, Ado ; Kusch, Patryk ; Vieira, Bruno G. M. ; Flavel, Benjamin ; Krupke, Ralph ; Barros, Eduardo B. ; Reich, Stephanie (2017)
Resonant anti-Stokes Raman scattering in single-walled carbon nanotubes.
In: Physical Review B, 96 (24)
doi: 10.1103/PhysRevB.96.245415
Artikel, Bibliographie

Li, Han ; Gordeev, Georgy ; Wasserroth, Sören ; Chakravadhanula, Venkata Sai Kiran ; Neelakandhan, Shyam Kumar Chethala ; Hennrich, Frank ; Jorio, Ado ; Reich, Stephanie ; Krupke, Ralph ; Flavel, Benjamin Scott (2017)
Inner- and outer-wall sorting of double-walled carbon nanotubes.
In: Nature Nanotechnology, 12 (12)
doi: 10.1038/nnano.2017.207
Artikel, Bibliographie

Alam, Asiful ; Dehm, Simone ; Hennrich, Frank ; Zakharko, Yuriy ; Graf, Arko ; Pfohl, Moritz ; Hossain, Ihteaz M. ; Kappes, Manfred M. ; Zaumseil, Jana ; Krupke, Ralph ; Flavel, Benjamin S. (2017)
Photocurrent spectroscopy of dye-sensitized carbon nanotubes.
In: Nanoscale, 9 (31)
doi: 10.1039/C7NR04022A
Artikel, Bibliographie

Shyam Kumar, C. N. ; Chakravadhanula, Venkata Sai Kiran ; Riaz, Adnan ; Dehm, Simone ; Wang, Di ; Mu, Xiaoke ; Flavel, Benjamin ; Krupke, Ralph ; Kübel, Christian (2017)
Understanding the graphitization and growth of free-standing nanocrystalline graphene using in situ transmission electron microscopy.
In: Nanoscale, 9 (35)
doi: 10.1039/C7NR03276E
Artikel, Bibliographie

Wei, Li ; Flavel, Benjamin S. ; Li, Wenshan ; Krupke, Ralph ; Chen, Yuan (2017)
Exploring the upper limit of single-walled carbon nanotube purity by multiple-cycle aqueous two-phase separation.
In: Nanoscale, 9 (32)
doi: 10.1039/c7nr03302h
Artikel, Bibliographie

Reis, Wieland G. ; Tomović, Željko ; Weitz, R. Thomas ; Krupke, Ralph ; Mikhael, Jules (2017)
Wide dynamic range enrichment method of semiconducting single-walled carbon nanotubes with weak field centrifugation.
In: Scientific Reports, 7
doi: 10.1038/srep44812
Artikel, Bibliographie

Pyatkov, Felix ; Khasminskaya, Svetlana ; Kovalyuk, Vadim ; Hennrich, Frank ; Kappes, Manfred M. ; Goltsman, Gregory N. ; Pernice, Wolfram H. P. ; Krupke, Ralph (2017)
Sub-nanosecond light-pulse generation with waveguide-coupled carbon nanotube transducers.
In: Beilstein Journal of Nanotechnology, 8
doi: 10.3762/bjnano.8.5
Artikel, Bibliographie

Pfohl, Moritz ; Glaser, Konstantin ; Graf, Arko ; Mertens, Adrian ; Tune, Daniel D. ; Puerckhauer, Tanja ; Alam, Asiful ; Wei, Li ; Chen, Yuan ; Zaumseil, Jana ; Colsmann, Alexander ; Krupke, Ralph ; Flavel, Benjamin S. (2016)
Probing the Diameter Limit of Single Walled Carbon Nanotubes in SWCNT: Fullerene Solar Cells.
In: Advanced Energy Materials, 6 (21)
doi: 10.1002/aenm.201600890
Artikel, Bibliographie

Khasminskaya, Svetlana ; Pyatkov, Felix ; Słowik, Karolina ; Ferrari, Simone ; Kahl, Oliver ; Kovalyuk, Vadim ; Rath, Patrik ; Vetter, Andreas ; Hennrich, Frank ; Kappes, Manfred M. ; Gol'tsman, G. ; Korneev, A. ; Rockstuhl, Carsten ; Krupke, Ralph ; Pernice, Wolfram H. P. (2016)
Fully integrated quantum photonic circuit with an electrically driven light source.
In: Nature Photonics, 10 (11)
doi: 10.1038/nphoton.2016.178
Artikel, Bibliographie

Li, Wenshan ; Hennrich, Frank ; Flavel, Benjamin S. ; Kappes, Manfred M. ; Krupke, Ralph (2016)
Chiral-index resolved length mapping of carbon nanotubes in solution using electric-field induced differential absorption spectroscopy.
In: Nanotechnology, 27 (37)
doi: 10.1088/0957-4484/27/37/375706
Artikel, Bibliographie

Reis, Wieland G. ; Weitz, R. Thomas ; Kettner, Michel ; Kraus, Alexander ; Schwab, Matthias Georg ; Tomović, Željko ; Krupke, Ralph ; Mikhael, Jules (2016)
Highly Efficient and Scalable Separation of Semiconducting Carbon Nanotubes via Weak Field Centrifugation.
In: Scientific Reports, 6
doi: 10.1038/srep26259
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Pyatkov, Felix ; Fütterling, Valentin ; Khasminskaya, Svetlana ; Flavel, Benjamin S. ; Hennrich, Frank ; Kappes, Manfred M. ; Krupke, Ralph ; Pernice, Wolfram H. P. (2016)
Cavity-enhanced light emission from electrically driven carbon nanotubes.
In: Nature Photonics, 10 (6)
doi: 10.1038/nphoton.2016.70
Artikel, Bibliographie

Fechner, Randy G. ; Pyatkov, Felix ; Khasminskaya, Svetlana ; Flavel, Benjamin S. ; Krupke, Ralph ; Pernice, Wolfram H. P. (2016)
Directional couplers with integrated carbon nanotube incandescent light emitters.
In: Optics Express, 24 (2)
doi: 10.1364/OE.24.000966
Artikel, Bibliographie

Hennrich, Frank ; Li, Wenshan ; Fischer, Regina ; Lebedkin, Sergei ; Krupke, Ralph ; Kappes, Manfred M. (2016)
Length-sorted, large-diameter, Polyfluorene-wrapped semiconducting single-walled carbon nanotubes for high-density, short-channel transistors.
In: ACS Nano, 10 (2)
doi: 10.1021/acsnano.5b05572
Artikel, Bibliographie

Pfoh, Moritz ; Glaser, Konstantin ; Ludwig, Jens ; Tune, Daniel D. ; Dehm, Simone ; Kayser, Christian ; Colsmann, Alexander ; Krupke, Ralph ; Flavel, Benjamin S. (2016)
Performance enhancement of polymer-free carbon nanotube solar cells via transfer matrix modeling.
In: Advanced Energy Materials, 6 (1)
doi: 10.1002/aenm.201501345
Artikel, Bibliographie

Riaz, Adnan ; Pyatkov, Feliks ; Alam, Asiful ; Dehm, Simone ; Felten, Alexandre ; Chakravadhanula, Venkata S. K. ; Flavel, Benjamin S. ; Kübel, Christian ; Lemmer, Uli ; Krupke, Ralph (2015)
Light emission, light detection and strain sensing with nanocrystalline graphene.
In: Nanotechnology, 26 (32)
doi: 10.1088/0957-4484/26/32/325202
Artikel, Bibliographie

Moore, Katherine E. ; Pfohl, Moritz ; Tune, Daniel D. ; Hennrich, Frank ; Dehm, Simone ; Chakradhanula, Venkata Sai K. ; Kübel, Christian ; Krupke, Ralph ; Flavel, Benjamin S. (2015)
Sorting of Double-Walled Carbon Nanotubes According to Their Outer Wall Electronic Typeviaa Gel Permeation Method.
In: ACS Nano, 9 (4)
doi: 10.1021/nn506869h
Artikel, Bibliographie

Li, Wenshan ; Pyatkov, Feliks ; Dehm, Simone ; Flavel, Benjamin S. ; Krupke, Ralph (2014)
Deposition of semiconducting single-walled carbon nanotubes using light-assisted dielectrophoresis.
In: physica status solidi (b), 251 (12)
doi: 10.1002/pssb.201451280
Artikel, Bibliographie

Alam, Asiful ; Flavel, Benjamin S. ; Dehm, Simone ; Lemmer, Uli ; Krupke, Ralph (2014)
Photocurrent imaging of semiconducting carbon nanotube devices with local mirrors.
In: physica status solidi (b), 251 (12)
doi: 10.1002/pssb.201451272
Artikel, Bibliographie

Engel, Michael ; Moore, Katherine E. ; Alam, Asiful ; Dehm, Simone ; Krupke, Ralph ; Flavel, Benjamin S. (2014)
Photocurrent Spectroscopy of (n,m) Sorted Solution-Processed Single-Walled Carbon Nanotubes.
In: ACS Nano, 8 (9)
doi: 10.1021/nn503278d
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Engel, Michael ; Hennrich, Frank ; Krupke, Ralph (2014)
Klein, schnell, hell.
In: Physik in unserer Zeit, 45 (5)
doi: 10.1002/piuz.201401364
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Tune, Daniel D. ; Blanch, Adam J. ; Krupke, Ralph ; Flavel, Benjamin S. ; Shapter, Joseph G. (2014)
Nanotube film metallicity and its effect on the performance of carbon nanotube-silicon solar cells.
In: physica status solidi (a), 211 (7)
doi: 10.1002/pssa.201431043
Artikel, Bibliographie

Khasminskaya, Svetlana ; Pyatkov, Feliks ; Flavel, Benjamin S. ; Pernice, Wolfram H. ; Krupke, Ralph (2014)
Waveguide-Integrated Light-Emitting Carbon Nanotubes.
In: Advanced Materials, 26 (21)
doi: 10.1002/adma.201305634
Artikel, Bibliographie

Thiele, Cornelius ; Vieker, Henning ; Beyer, André ; Flavel, Benjamin S. ; Hennrich, Frank ; Muñoz Torres, David ; Eaton, Thomas R. ; Mayor, Marcel ; Kappes, Manfred M. ; Gölzhäuser, Armin ; Löhneysen, Hilbert v. ; Krupke, Ralph (2014)
Fabrication of carbon nanotube nanogap electrodes by helium ion sputtering for molecular contacts.
In: Applied Physics Letters, 104 (10)
doi: 10.1063/1.4868097
Artikel, Bibliographie

Thiele, Cornelius ; Felten, Alexandre ; Echtermeyer, Tim J. ; Ferrari, Andrea C. ; Casiraghi, Cinzia ; Löhneysen, Hilbert von ; Krupke, Ralph (2013)
Electron-beam-induced direct etching of graphene.
In: Carbon, 64
doi: 10.1016/j.carbon.2013.07.038
Artikel, Bibliographie

Oron-Carl, Matti ; Krupke, Ralph (2013)
Enhancing Raman signals with an interferometrically controlled AFM tip.
In: Nanotechnology, 24 (41)
doi: 10.1088/0957-4484/24/41/415701
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Tune, Daniel D. ; Hennrich, Frank ; Dehm, Simone ; Klein, Michael F. G. ; Glaser, Konstantin ; Colsmann, Alexander ; Shapter, Joseph G. ; Lemmer, Uli ; Kappes, Manfred M. ; Krupke, Ralph ; Flavel, Benjamin S. (2013)
The Role of Nanotubes in Carbon Nanotube-Silicon Solar Cells.
In: Advanced Energy Materials, 3 (8)
doi: 10.1002/aenm.201200949
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Flavel, Benjamin S. ; Kappes, Manfred M. ; Krupke, Ralph ; Hennrich, Frank (2013)
Separation of Single-Walled Carbon Nanotubes by 1-Dodecanol-Mediated Size-Exclusion Chromatography.
In: ACS Nano, 7 (4)
doi: 10.1021/nn4004956
Artikel, Bibliographie

Lukas, Maya ; Meded, Velimir ; Vijayaraghavan, Aravind ; Song, Li ; Ajayan, Pulickel M. ; Fink, Karin ; Wenzel, Wolfgang ; Krupke, Ralph (2013)
Catalytic subsurface etching of nanoscale channels in graphite.
In: Nature Communications, 4
doi: 10.1038/ncomms2399
Artikel, Bibliographie

Engel, Michael ; Krupke, Ralph (2012)
Leuchtendes Graphen.
In: Physik in unserer Zeit, 43 (6)
doi: 10.1002/piuz.201290095
Artikel, Bibliographie

Engel, Michael ; Steiner, Mathias ; Sundaram, Ravi S. ; Krupke, Ralph ; Green, Alexander A. ; Hersam, Mark C. ; Avouris, Phaedon (2012)
Spatially Resolved Electrostatic Potential and Photocurrent Generation in Carbon Nanotube Array Devices.
In: ACS Nano
doi: 10.1021/nn302416e
Artikel, Bibliographie

Eckmann, Axel ; Felten, Alexandre ; Mishchenko, Artem ; Britnell, Liam ; Krupke, Ralph ; Novoselov, Kostya S. ; Casiraghi, Cinzia (2012)
Probing the Nature of Defects in Graphene by Raman Spectroscopy.
In: Nano Letters, 12 (8)
doi: 10.1021/nl300901a
Artikel, Bibliographie

Engel, Michael ; Steiner, Mathias ; Lombardo, Antonio ; Ferrari, Andrea C. ; Löhneysen, Hilbert v. ; Avouris, Phaedon ; Krupke, Ralph (2012)
Light–matter interaction in a microcavity-controlled graphene transistor.
In: Nature Communications, 3
doi: 10.1038/ncomms1911
Artikel, Bibliographie

Tune, Daniel D. ; Flavel, Benjamin S. ; Krupke, Ralph ; Shapter, Joseph G. (2012)
Carbon Nanotube-Silicon Solar Cells.
In: Advanced Energy Materials
doi: 10.1002/aenm.201200249
Artikel, Bibliographie

Steiner, Mathias ; Engel, Michael ; Lin, Yu-Ming ; Wu, Yanqing ; Jenkins, Keith ; Farmer, Damon B. ; Humes, Jefford J. ; Yoder, Nathan L. ; Seo, Jung-Woo T. ; Green, Alexander A. ; Hersam, Mark C. ; Krupke, Ralph ; Avouris, Phaedon (2012)
High-frequency performance of scaled carbon nanotube array field-effect transistors.
In: Applied Physics Letters, 101 (5)
doi: 10.1063/1.4742325
Artikel, Bibliographie

Rauhut, Nina ; Engel, Michael ; Steiner, Mathias ; Krupke, Ralph ; Avouris, Phaedon ; Hartschuh, Achim (2012)
Antenna-Enhanced Photocurrent Microscopy on Single-Walled Carbon Nanotubes at 30 nm Resolution.
In: ACS Nano, 6 (7)
doi: 10.1021/nn301979c
Artikel, Bibliographie

Felten, Alexandre ; Flavel, Benjamin S. ; Britnell, Liam ; Eckmann, Axel ; Louette, Pierre ; Pireaux, Jean-Jacques ; Hirtz, Michael ; Krupke, Ralph ; Casiraghi, Cinzia (2012)
Single- and Double-Sided Chemical Functionalization of Bilayer Graphene.
In: Small, 9 (4)
doi: 10.1002/smll.201202214
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Chappaz-Gillot, Cyril ; Marek, Peter L. ; Blaive, Bruno J. ; Canard, Gabriel ; Bürck, Jochen ; Garab, Győző ; Hahn, Horst ; Jávorfi, Tamás ; Kelemen, Loránd ; Krupke, Ralph ; Mössinger, Dennis ; Ormos, Pál ; Reddy, Chilla Malla ; Roussel, Christian ; Steinbach, Gábor ; Szabó, Milán ; Ulrich, Anne S. ; Vanthuyne, Nicolas ; Vijayaraghavan, Aravind ; Zupcanova, Anita ; Balaban, Teodor Silviu (2012)
Anisotropic Organization and Microscopic Manipulation of Self-Assembling Synthetic Porphyrin Microrods That Mimic Chlorosomes: Bacterial Light-Harvesting Systems.
In: Journal of the American Chemical Society, 134 (2)
doi: 10.1021/ja203838p
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Thiele, Cornelius ; Engel, Michael ; Hennrich, Frank ; Kappes, Manfred M. ; Johnsen, Klaus-Peter ; Frase, Carl G. ; Löhneysen, Hilbert v. ; Krupke, Ralph (2011)
Controlled fabrication of single-walled carbon nanotube electrodes by electron-beam-induced oxidation.
In: Applied Physics Letters, 99 (17)
doi: 10.1063/1.3656736
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Pfeiffer, Martin H. P. ; Stürzl, Ninette ; Marquardt, Christoph W. ; Engel, Michael ; Dehm, Simone ; Hennrich, Frank ; Kappes, Manfred M. ; Lemmer, Uli ; Krupke, Ralph (2011)
Electroluminescence from chirality-sorted (9,7)-semiconducting carbon nanotube devices.
In: Optics Express, 19 (S6)
doi: 10.1364/OE.19.0A1184
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Sundaram, Ravi S. ; Steiner, Mathias ; Chiu, Hsin-Ying ; Engel, Michael ; Bol, Ageeth A. ; Krupke, Ralph ; Burghard, Marko ; Kern, Klaus ; Avouris, Phaedon (2011)
The Graphene–Gold Interface and Its Implications for Nanoelectronics.
In: Nano Letters, 11 (9)
doi: 10.1021/nl201907u
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Vijayaraghavan, Aravind ; Timmermans, Marina Y. ; Grigoras, Kestutis ; Nasibulin, Albert G. ; Kauppinen, Esko I. ; Krupke, Ralph (2011)
Imaging conduction pathways in carbon nanotube network transistors by voltage-contrast scanning electron microscopy.
In: Nanotechnology, 22 (26)
doi: 10.1088/0957-4484/22/26/265715
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Ganzhorn, Marc ; Vijayaraghavan, Aravind ; Green, Alexander A. ; Dehm, Simone ; Voigt, Achim ; Rapp, Michael ; Hersam, Mark C. ; Krupke, Ralph (2011)
A Scalable, CMOS-Compatible Assembly of Ambipolar Semiconducting Single-Walled Carbon Nanotube Devices.
In: Advanced Materials, 23 (15)
doi: 10.1002/adma.201004640
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Ganzhorn, Marc ; Vijayaraghavan, Aravind ; Dehm, Simone ; Hennrich, Frank ; Green, Alexander A. ; Fichtner, Maximilian ; Voigt, Achim ; Rapp, Michael ; Löhneysen, Hilbert von ; Hersam, Mark C. ; Kappes, Manfred M. ; Krupke, Ralph (2011)
Hydrogen Sensing with Diameter- and Chirality-Sorted Carbon Nanotubes.
In: ACS Nano, 5 (3)
doi: 10.1021/nn101992g
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Grunder, Sergio ; Muñoz Torres, David ; Marquardt, Christoph ; Błaszczyk, Alfred ; Krupke, Ralph ; Mayor, Marcel (2011)
Synthesis and Optical Properties of Molecular Rods Comprising a Central Core-Substituted Naphthalenediimide Chromophore for Carbon Nanotube Junctions.
In: European Journal of Organic Chemistry, 2011 (3)
doi: 10.1002/ejoc.201001415
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Marquardt, Christoph W. ; Grunder, Sergio ; Błaszczyk, Alfred ; Dehm, Simone ; Hennrich, Frank ; Löhneysen, Hilbert v. ; Mayor, Marcel ; Krupke, Ralph (2010)
Electroluminescence from a single nanotube–molecule–nanotube junction.
In: Nature Nanotechnology, 5 (12)
doi: 10.1038/nnano.2010.230
Artikel, Bibliographie

Kinoshita, Megumi ; Steiner, Mathias ; Engel, Michael ; Small, Joshua P. ; Green, Alexander A. ; Hersam, Mark C. ; Krupke, Ralph ; Mendez, Emilio E. ; Avouris, Phaedon (2010)
The polarized carbon nanotube thin film LED.
In: Optics Express, 18 (25)
doi: 10.1364/OE.18.025738
Artikel, Bibliographie

Vijayaraghavan, Aravind ; Hennrich, Frank ; Stürzl, Ninette ; Engel, Michael ; Ganzhorn, Marc ; Oron-Carl, Matti ; Marquardt, Christoph W. ; Dehm, Simone ; Lebedkin, Sergei ; Kappes, Manfred M. ; Krupke, Ralph (2010)
Toward Single-Chirality Carbon Nanotube Device Arrays.
In: ACS Nano, 4 (5)
doi: 10.1021/nn100337t
Artikel, Bibliographie

Yan, Wenjing ; Mechau, Norman ; Hahn, Horst ; Krupke, Ralph (2010)
Ultraviolet photodetector arrays assembled by dielectrophoresis of ZnO nanoparticles.
In: Nanotechnology, 21 (11)
doi: 10.1088/0957-4484/21/11/115501
Artikel, Bibliographie

Vijayaraghavan, Aravind ; Marquardt, Christoph W. ; Dehm, Simone ; Hennrich, Frank ; Krupke, Ralph (2009)
Imaging defects and junctions in single-walled carbon nanotubes by voltage-contrast scanning electron microscopy.
In: Carbon, 48 (2)
doi: 10.1016/j.carbon.2009.09.067
Artikel, Bibliographie

Vijayaraghavan, Aravind ; Sciascia, Calogero ; Dehm, Simone ; Lombardo, Antonio ; Bonetti, Alessandro ; Ferrari, Andrea C. ; Krupke, Ralph (2009)
Dielectrophoretic Assembly of High-Density Arrays of Individual Graphene Devices for Rapid Screening.
In: ACS Nano, 3 (7)
doi: 10.1021/nn900288d
Artikel, Bibliographie

Shu, Lijin ; Müri, Marcel ; Krupke, Ralph ; Mayor, Marcel (2009)
Shape-persistent macrocycles comprising perfluorinated benzene subunits: synthesis, aggregation behaviour and unexpected μ-rod formation.
In: Organic & Biomolecular Chemistry, 7 (6)
doi: 10.1039/b817274a
Artikel, Bibliographie

Fang, Jixiang ; Hahn, Horst ; Krupke, Ralph ; Schramm, Frank ; Scherer, Torsten ; Ding, Bingjun ; Song, Xiaoping (2009)
Silver nanowires growth via branch fragmentation of electrochemically grown silver dendrites.
In: Chemical Communications, (9)
doi: 10.1039/b819003h
Artikel, Bibliographie

Vijayaraghavan, Aravind ; Blatt, Sabine ; Marquardt, Christoph ; Dehm, Simone ; Wahi, Raghav ; Hennrich, Frank ; Krupke, Ralph (2008)
Imaging electronic structure of carbon nanotubes by voltage-contrast scanning electron microscopy.
In: Nano Research, 1 (4)
doi: 10.1007/s12274-008-8034-3
Artikel, Bibliographie

Marquardt, Christoph W. ; Dehm, Simone ; Vijayaraghavan, Aravind ; Blatt, Sabine ; Hennrich, Frank ; Krupke, Ralph (2008)
Reversible Metal−Insulator Transitions in Metallic Single-Walled Carbon Nanotubes.
In: Nano Letters, 8 (9)
doi: 10.1021/nl801288d
Artikel, Bibliographie

Oron-Carl, Matti ; Krupke, Ralph (2008)
Raman Spectroscopic Evidence for Hot-Phonon Generation in Electrically Biased Carbon Nanotubes.
In: Physical Review Letters, 100 (12)
doi: 10.1103/PhysRevLett.100.127401
Artikel, Bibliographie

Krupke, Ralph ; Hennrich, F.
Hrsg.: Basiuk, V. A. ; Basiuk, E. V. (2008)
Separation techniques for carbon nanotubes.
In: Chemistry of Carbon Nanotubes
Buchkapitel, Bibliographie

Dagan, Y. ; Krupke, Ralph ; Deutscher, G. (2007)
[110] tunneling under applied magnetic fields into Y1Ba2Cu3O7 − δ: Possible evidence for a field-induced idxy gap component.
In: Europhysics Letters (EPL), 51 (1)
doi: 10.1209/epl/i2000-00343-4
Artikel, Bibliographie

Blatt, Sabine ; Hennrich, Frank ; Löhneysen, Hilbert v. ; Kappes, Manfred M. ; Vijayaraghavan, Aravind ; Krupke, Ralph (2007)
Influence of Structural and Dielectric Anisotropy on the Dielectrophoresis of Single-Walled Carbon Nanotubes.
In: Nano Letters, 7 (7)
doi: 10.1021/nl0706751
Artikel, Bibliographie

Vijayaraghavan, Aravind ; Blatt, Sabine ; Weissenberger, Daniel ; Oron-Carl, Matti ; Hennrich, Frank ; Gerthsen, Dagmar ; Hahn, Horst ; Krupke, Ralph (2007)
Ultra-Large-Scale Directed Assembly of Single-Walled Carbon Nanotube Devices.
In: Nano Letters, 7 (6)
doi: 10.1021/nl0703727
Artikel, Bibliographie

Hennrich, Frank ; Krupke, Ralph ; Arnold, Katharina ; Rojas Stütz, Jan A. ; Lebedkin, Sergei ; Koch, Thomas ; Schimmel, Thomas ; Kappes, Manfred M. (2007)
The Mechanism of Cavitation-Induced Scission of Single-Walled Carbon Nanotubes.
In: The Journal of Physical Chemistry B, 111 (8)
doi: 10.1021/jp065262n
Artikel, Bibliographie

Marquardt, Christoph W. ; Blatt, Sabine ; Hennrich, Frank ; Löhneysen, Hilbert v. ; Krupke, Ralph (2006)
Probing dielectrophoretic force fields with metallic carbon nanotubes.
In: Applied Physics Letters, 89 (18)
doi: 10.1063/1.2372771
Artikel, Bibliographie

Krupke, Ralph ; Linden, S. ; Rapp, M. ; Hennrich, F. (2006)
Thin Films of Metallic Carbon Nanotubes Prepared by Dielectrophoresis.
In: Advanced Materials, 18 (11)
doi: 10.1002/adma.200600134
Artikel, Bibliographie

Oron-Carl, Matti ; Hennrich, Frank ; Kappes, Manfred M. ; Löhneysen, Hilbert v. ; Krupke, Ralph (2005)
On the Electron−Phonon Coupling of Individual Single-Walled Carbon Nanotubes.
In: Nano Letters, 5 (9)
doi: 10.1021/nl051107t
Artikel, Bibliographie

Krupke, Ralph ; Hennrich, Frank (2005)
Comment on “Using the Selective Functionalization of Metallic Single-Walled Carbon Nanotubes to Control Dielectrophoretic Mobility”.
In: The Journal of Physical Chemistry B, 109 (35)
doi: 10.1021/jp0447035
Artikel, Bibliographie

Krupke, Ralph ; Hennrich, Frank (2005)
Separation Techniques for Carbon Nanotubes.
In: Advanced Engineering Materials, 7 (3)
doi: 10.1002/adem.200400170
Artikel, Bibliographie

Krupke, Ralph ; Azoulay, M. ; Deutscher, G.
Hrsg.: Goyal, Amit (2005)
Sputtering of Y1Ba2Cu3O7-X.
In: Second-Generation HTS Conductors
Buchkapitel, Bibliographie

Krupke, Ralph ; Hennrich, Frank ; Kappes, Manfred M. ; Löhneysen, Hilbert von (2004)
Surface Conductance Induced Dielectrophoresis of Semiconducting Single-Walled Carbon Nanotubes.
In: Nano Letters, 4 (8)
doi: 10.1021/nl0493794
Artikel, Bibliographie

Krupke, Ralph ; Heinrich, Frank ; Löhneysen, Hilbert v. ; Kappes, Manfred M. (2003)
Separation of Metallic from Semiconducting Single-Walled Carbon Nanotubes.
In: Science, 301 (5631)
doi: 10.1126/science.1086534
Artikel, Bibliographie

Krupke, Ralph ; Hennrich, Frank ; Weber, H. B. ; Kappes, Manfred M. ; Löhneysen, Hilbert v. (2003)
Simultaneous Deposition of Metallic Bundles of Single-walled Carbon Nanotubes Using Ac-dielectrophoresis.
In: Nano Letters, 3 (8)
doi: 10.1021/nl0342343
Artikel, Bibliographie

Krupke, Ralph ; Hennrich, F. ; Hampe, Oliver ; Kappes, Manfred M. (2003)
Near-Infrared Absorbance of Single-Walled Carbon Nanotubes Dispersed in Dimethylformamide.
In: The Journal of Physical Chemistry B, 107 (24)
doi: 10.1021/jp034077w
Artikel, Bibliographie

Krupke, Ralph ; Hennrich, Frank ; Weber, H. B. ; Beckmann, D. ; Hampe, O. ; Malik, S. ; Kappes, M. M. ; Löhneysen, Hilbert v. (2003)
Contacting single bundles of carbon nanotubes with alternating electric fields.
In: Applied Physics A: Materials Science & Processing, 76 (3)
doi: 10.1007/s00339-002-1592-4
Artikel, Bibliographie

Krupke, Ralph ; Malik, S. ; Weber, H. B. ; Hampe, O. ; Kappes, M. M. ; Löhneysen, Hilbert v. (2002)
Patterning and Visualizing Self-Assembled Monolayers with Low-Energy Electrons.
In: Nano Letters, 2 (10)
doi: 10.1021/nl025679e
Artikel, Bibliographie

Deutscher, G. ; Dagan, Y. ; Kohen, A. ; Krupke, Ralph (2000)
Field induced and spontaneous sub-gap in [110] and [100] oriented YBCO films: indication for a dx2−y2 + idxy order parameter.
In: Physica C: Superconductivity, 341-348 (Part 3)
doi: 10.1016/S0921-4534(00)01488-X
Artikel, Bibliographie

Dagan, Y. ; Krupke, Ralph ; Deutscher, G. (2000)
Determination of the superconducting gap in YBa2Cu3O7-δ by tunneling experiments under magnetic fields.
In: Physical Review B, 62 (1)
doi: 10.1103/PhysRevB.62.146
Artikel, Bibliographie

Krupke, Ralph ; Barkay, Z. ; Deutscher, G. (2000)
A systematic approach to reduce macroscopic defects in c-axis-oriented YBCO films.
In: Physica C: Superconductivity, 317-18 (1-2)
doi: 10.1016/S0921-4534(99)00119-7
Artikel, Bibliographie

Krupke, Ralph ; Deutscher, G. (1999)
Anisotropic Magnetic Field Dependence of the Zero-Bias Anomaly on In-Plane Oriented [100] Y_{1}Ba_{2}Cu_{3}O_{7-x}/In Tunnel Junctions.
In: Physical Review Letters, 83 (22)
doi: 10.1103/PhysRevLett.83.4634
Artikel, Bibliographie

Krupke, Ralph ; Deutscher, Guy (1999)
Spontaneous and Field Enhanced Sub-Gaps in In-Plane Oriented (100)-Y1-XCaXBa2Cu3O7-Y/ In Tunnel Junctions.
In: Journal of Low Temperature Physics, 117 (3-4)
doi: 10.1023/A:1022527329560
Artikel, Bibliographie

Krupke, Ralph ; Barkay, Z. ; Deutscher, G. (1999)
A systematic approach to reduce macroscopic defects in c-axis oriented YBCO films.
In: Physica C: Superconductivity, 315 (1-2)
doi: 10.1016/S0921-4534(99)00199-9
Artikel, Bibliographie

Krupke, Ralph ; Barkay, Z. ; Deutscher, G. (1997)
On the origin of hole formation in YBCO films.
In: Physica C: Superconductivity, 289 (1-2)
doi: 10.1016/S0921-4534(97)01473-1
Artikel, Bibliographie

Krupke, Ralph (1997)
Superconducting, structural and surface properties of GdBaCuO thin films deposited by electron cyclotron resonance supported sputtering.
In: Physica C: Superconductivity, 279 (3-4)
doi: 10.1016/S0921-4534(97)00120-2
Artikel, Bibliographie