Chavarin, Carlos Alvarado ; Hardt, Elena ; Skibitzki, Oliver ; Voss, Thomas ; Eissa, Mohammed ; Spirito, Davide ; Capellini, Giovanni ; Baldassarre, Leonetta ; Flesch, Julia ; Piehler, Jacob ; You, Changjiang ; Grüssing, Sönke ; Römer, Friedhard ; Witzigmann, Bernd (2022)
Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators.
In: Frequenz, 76 (11-12)
doi: 10.1515/freq-2022-0078
Article, Bibliographie
This is the latest version of this item.
Abstract
Localized Surface Plasmon Resonances (LSPR) based on highly doped semiconductors microstructures, such as antennas, can be engineered to exhibit resonant features at THz frequencies. In this work, we demonstrate plasmonic antennas with increased quality factor LSPRs from Fano coupling to dark modes. We also discuss the advances in the biofunctionalization of n-doped Ge antennas for specific protein immobilization and cell interfacing. Finally, albumin biolayers with a thickness of a few hundred nanometers are used to demonstrate the performance of the fano-coupled n-Ge antennas as sensors. A resonant change of over 10% in transmission, due to the presence of the biolayer, can be detected within a bandwidth of only 20 GHz.
| Item Type: | Article |
|---|---|
| Erschienen: | 2022 |
| Creators: | Chavarin, Carlos Alvarado ; Hardt, Elena ; Skibitzki, Oliver ; Voss, Thomas ; Eissa, Mohammed ; Spirito, Davide ; Capellini, Giovanni ; Baldassarre, Leonetta ; Flesch, Julia ; Piehler, Jacob ; You, Changjiang ; Grüssing, Sönke ; Römer, Friedhard ; Witzigmann, Bernd |
| Type of entry: | Bibliographie |
| Title: | Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators |
| Language: | English |
| Date: | 2022 |
| Place of Publication: | Darmstadt |
| Journal or Publication Title: | Frequenz |
| Volume of the journal: | 76 |
| Issue Number: | 11-12 |
| DOI: | 10.1515/freq-2022-0078 |
| Corresponding Links: | |
| Abstract: | Localized Surface Plasmon Resonances (LSPR) based on highly doped semiconductors microstructures, such as antennas, can be engineered to exhibit resonant features at THz frequencies. In this work, we demonstrate plasmonic antennas with increased quality factor LSPRs from Fano coupling to dark modes. We also discuss the advances in the biofunctionalization of n-doped Ge antennas for specific protein immobilization and cell interfacing. Finally, albumin biolayers with a thickness of a few hundred nanometers are used to demonstrate the performance of the fano-coupled n-Ge antennas as sensors. A resonant change of over 10% in transmission, due to the presence of the biolayer, can be detected within a bandwidth of only 20 GHz. |
| Uncontrolled Keywords: | biosensing, fano resonances, semiconductor plasmonics, terahertz sensor |
| Classification DDC: | 500 Science and mathematics > 530 Physics 500 Science and mathematics > 570 Life sciences, biology 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP) |
| Date Deposited: | 02 Aug 2024 12:50 |
| Last Modified: | 30 Aug 2024 07:52 |
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| Suche nach Titel in: | TUfind oder in Google |
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Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators. (deposited 01 Mar 2023 10:12)
- Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators. (deposited 02 Aug 2024 12:50) [Currently Displayed]
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