Controlling Terahertz Radiation with Nanoscale Metal Barriers Embedded in Nano Slot Antennas
- Authors
- Park, Hyeong-Ryeol; Bahk, Young-Mi; Ahn, Kwang Jun; Park, Q-Han; Kim, Dai-Sik; Martin-Moreno, Luis; Garcia-Vidal, Francisco J.; Bravo-Abad, Jorge
- Issue Date
- 10월-2011
- Publisher
- AMER CHEMICAL SOC
- Keywords
- paired antenna; terahertz spectroscopy; terahertz nano slot antenna; subskin depth barrier; nanoparticle detection
- Citation
- ACS NANO, v.5, no.10, pp.8340 - 8345
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS NANO
- Volume
- 5
- Number
- 10
- Start Page
- 8340
- End Page
- 8345
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/111486
- DOI
- 10.1021/nn2031885
- ISSN
- 1936-0851
- Abstract
- Nanoscale metallic barriers embedded in terahertz (THz) slot antennas are shown to provide unprecedented control of the transition state arising at the crossover between the full- and half-wavelength resonant modes of such antennas. We demonstrate strong near-field coupling between two paired THz slot antennas separated by a 5 nm wide nanobarrier, almost fully inducing the shift to the resonance of the double-length slot antenna. This increases by a factor of 50 the length-scale needed to observe similar coupling strengths in conventional air-gap antennas (around 0.1 nm), making the transition state readily accessible to experiment. Our measurements are in good agreement with a quantitative theoretical modeling, which also provides a simple physical picture of our observations.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Science > Department of Physics > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.