Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators-Reference-Cited by-同舟云学术

Terahertz subwavelength sensing with bio-functionalized germanium fano-resonators

Published:2022-08-15 Issue:11-12 Volume:76 Page:639-650
ISSN:0016-1136
Container-title:Frequenz
language:en
Short-container-title:

Author:

Chavarin Carlos Alvarado¹,Hardt Elena¹,Skibitzki Oliver¹,Voss Thomas¹,Eissa Mohammed¹,Spirito Davide¹,Capellini Giovanni¹,Baldassarre Leonetta²,Flesch Julia³,Piehler Jacob³,You Changjiang³^ORCID,Grüssing Sönke⁴,Römer Friedhard⁵,Witzigmann Bernd⁵^ORCID

Affiliation:

1. IHP GmbH , Frankfurt Oder , Germany

2. Department of Physics , Sapienza University of Rome , Rome , Italy

3. Department of Biology/Chemistry, and Center for Cellular Nanoanalytics (CellNanOs) , University of Osnabrück , Osnabrück , Germany

4. Electrical Engineering/Computer Science Dept. and CINSaT , University of Kassel , Kassel , Germany

5. Department of Electrical-Electronic-Communication Engineering , Friedrich-Alexander Universität Erlangen-Nürnberg , Erlangen-Nürnberg , Germany

Abstract

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.

Funder

Deutsche Forschungsgemeinschaft

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering

Link

https://www.degruyter.com/document/doi/10.1515/freq-2022-0078/pdf

Reference36 articles.

1. Y.-S. Lee, Principles of Terahertz Science and Technology, New York, Springer Science+Business Media, LLC, 2009.

2. N. Rothbart, O. Holz, R. Koczulla, K. Schmalz, and H.-W. Hübers, “Analysis of human breath by millimeter-wave/terahertz spectroscopy,” Sensors, vol. 19, no. 12, p. 2719, 2019, https://doi.org/10.3390/s19122719.

3. M. Danciu, T. Alexa-Stratulat, C. Stefanescu, et al.., “Terahertz spectroscopy and imaging: a cutting-edge method for diagnosing digestive cancers,” Materials, vol. 12, no. 1519, 2019, https://doi.org/10.3390/ma12091519.

4. M. Naftaly, N. Vieweg, and A. Deninger, “Industrial applications of terahertz sensing: state of play,” Sensors, vol. 19, no. 4203, 2019, https://doi.org/10.3390/s19194203.

5. A. Markelz, S. Whitmire, J. Hillebrecht, and R. Birge, “THz time domain spectroscopy of biomolecular conformational modes,” Phys. Med. Biol., vol. 47, no. 21, pp. 3797–3805, 2002, https://doi.org/10.1088/0031-9155/47/21/318.