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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 424 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 417 | - |
dc.citation.title | ACS PHOTONICS | - |
dc.citation.volume | 2 | - |
dc.contributor.author | Park, Hyeong-Ryeol | - |
dc.contributor.author | Chen, Xiaoshu | - |
dc.contributor.author | Ngoc-Cuong Nguyen | - |
dc.contributor.author | Peraire, Jaime | - |
dc.contributor.author | Oh, Sang-Hyun | - |
dc.date.accessioned | 2023-12-22T01:36:46Z | - |
dc.date.available | 2023-12-22T01:36:46Z | - |
dc.date.created | 2019-03-08 | - |
dc.date.issued | 2015-03 | - |
dc.description.abstract | We experimentally show that terahertz (THz) waves confined in sub-10 nm metallic gaps can detect refractive index changes caused by only a 1 nm thick (similar to lambda/106) dielectric overlayer. We use atomic layer lithography to fabricate a wafer-scale array of annular nanogaps. Using THz time-domain spectroscopy in conjunction with atomic layer deposition, we measure spectral shifts of a THz resonance peak with increasing Al2O3 film thickness in 1 nm intervals. Because of the enormous mismatch in length scales between THz waves and sub-10 nm gaps, conventional modeling techniques cannot readily be used to analyze our results. We employ an advanced finite-element-modeling (FEM) technique, Hybridizable Discontinuous Galerkin (HDG) scheme, for full three-dimensional modeling of the resonant transmission of THz waves through an annular gap that is 2 nm in width and 32 mu m in diameter. Our multiscale 3D FEM technique and atomic layer lithography will enable a series of new investigations in THz nanophotonics that has not been possible before. | - |
dc.identifier.bibliographicCitation | ACS PHOTONICS, v.2, no.3, pp.417 - 424 | - |
dc.identifier.doi | 10.1021/ph500464j | - |
dc.identifier.issn | 2330-4022 | - |
dc.identifier.scopusid | 2-s2.0-84925652087 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/26317 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/ph500464j | - |
dc.identifier.wosid | 000351419600014 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Nanogap-Enhanced Terahertz Sensing of 1 nm Thick (lambda/10(6)) Dielectric Films | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science; Optics; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | nanogap | - |
dc.subject.keywordAuthor | thin-film sensing | - |
dc.subject.keywordAuthor | atomic layer deposition | - |
dc.subject.keywordAuthor | atomic layer lithography | - |
dc.subject.keywordAuthor | finite element modeling | - |
dc.subject.keywordAuthor | Hybridizable Discontinuous Galerkin (HDG) method | - |
dc.subject.keywordAuthor | terahertz nanophotonics | - |
dc.subject.keywordPlus | DISCONTINUOUS GALERKIN METHODS | - |
dc.subject.keywordPlus | EXTRAORDINARY OPTICAL-TRANSMISSION | - |
dc.subject.keywordPlus | TIME-DOMAIN SPECTROSCOPY | - |
dc.subject.keywordPlus | ATOMIC LAYER DEPOSITION | - |
dc.subject.keywordPlus | HARMONIC MAXWELL EQUATIONS | - |
dc.subject.keywordPlus | SPOOF PLASMON SURFACES | - |
dc.subject.keywordPlus | LIGHT TRANSMISSION | - |
dc.subject.keywordPlus | ELLIPTIC PROBLEMS | - |
dc.subject.keywordPlus | NANOHOLE ARRAYS | - |
dc.subject.keywordPlus | RESONANCE | - |
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