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Kim, Dai-Sik
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Effective-zero-thickness terahertz slot antennas using stepped structures

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dc.contributor.author Yun, Hyeong Seok ko
dc.contributor.author Lee, Dukhyung ko
dc.contributor.author Kim, Dai-Sik ko
dc.date.available 2021-09-09T08:40:57Z -
dc.date.created 2021-07-29 ko
dc.date.issued 2021-07 ko
dc.identifier.citation OPTICS EXPRESS, v.29, no.14, pp.21262 - 21268 ko
dc.identifier.issn 1094-4087 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/53867 -
dc.description.abstract Metallic nanostructures play an essential role in electromagnetic manipulations due to the localization and enhancement of electromagnetic waves in nanogaps. Scaling down the dimensions of the gap, such as the gap width and the thickness, is an effective way to enhance light-matter interaction with colossal field enhancement. However, reducing the thickness below 10 nanometers still suffers from fabrication difficulty and unintended direct transmission through metals. Here, we fabricate effective-zero-thickness slot antennas by stepping metals in the vicinity of the gaps to confine electromagnetic waves in tiny volumes. We analyze and simulate terahertz transmission, and demonstrate the absorption enhancement of molecules in the slot antennas. Our fabrication technique provides a simple but versatile tool for maximum field enhancement and molecular sensing. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement ko
dc.language 영어 ko
dc.publisher OPTICAL SOC AMER ko
dc.title Effective-zero-thickness terahertz slot antennas using stepped structures ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85108457922 ko
dc.identifier.wosid 000670054200016 ko
dc.type.rims ART ko
dc.identifier.doi 10.1364/OE.427061 ko
dc.identifier.url https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-14-21262&id=452665 ko
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