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Terahertz nano-spectroscopy with resonant scattering probes

Siday, T; Hale, LL; Hermans, RI; Mitrofanov, O; (2021) Terahertz nano-spectroscopy with resonant scattering probes. In: Proceedings of the 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). (pp. pp. 289-290). IEEE: Buffalo, NY, USA. Green open access

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Abstract

We propose and demonstrate tunable resonant scattering probes for terahertz (THz) near-field microscopy, using sharp indium tips fabricated to the tine of a quartz tuning fork. We find the antenna resonance of the indium tips can be tuned by altering the tip length, which we support with numerical models. We also demonstrate the indium tips can provide nanoscale field confinement at the tip apex, with spatial resolution better than 100 nm.

Type: Proceedings paper
Title: Terahertz nano-spectroscopy with resonant scattering probes
Event: 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
Location: ELECTR NETWORK
Dates: 10 Nov 2020 - 13 Nov 2020
ISBN-13: 978-1-7281-6620-9
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/IRMMW-THz46771.2020.9370491
Publisher version: https://doi.org/10.1109/IRMMW-THz46771.2020.937049...
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Vibrations, Scattering, Nanoscale devices, Numerical models, Indium, Probes, Spatial resolution
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10158047
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