DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Yeonhong | - |
dc.contributor.author | Baek, Seunghwa | - |
dc.contributor.author | Gupta, Prince | - |
dc.contributor.author | Kim, Changwook | - |
dc.contributor.author | Chang, Kiseok | - |
dc.contributor.author | Ryu, Sung-Pil | - |
dc.contributor.author | Kang, Hansaem | - |
dc.contributor.author | Kim, Wook Sung | - |
dc.contributor.author | KIM, WOOKSUNG | - |
dc.contributor.author | Myoung, Jaemin | - |
dc.contributor.author | Park, Wounjhang | - |
dc.contributor.author | Kim, Kyoungsik | - |
dc.date.accessioned | 2019-03-07T01:08:52Z | - |
dc.date.available | 2019-03-07T01:08:52Z | - |
dc.date.created | 2019-03-05 | - |
dc.date.issued | 2019-02 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/94898 | - |
dc.description.abstract | The coupling of the surface plasmon near-field into the sensing medium is key to the sensitivity of surface plasmon-based sensing devices. A low-index dielectric is necessary for the sensing medium to support a highly-penetrating surface plasmon evanescent field that extends well into the dielectric medium. The air-like refractive index, n, of an aerogel substrate provides another dimension for ultralow-index plasmonic devices. In this paper, we experimentally observed an angular surface plasmon resonance dip at 74° with the ultralow-index aerogel substrate, as was expected from theory. We also demonstrated the comparatively high-sensitivity surface plasmon resonance wavelength, λ, while the change in Δλ/Δn with different substrates was studied in detail. A 740 nm-period metal grating was imprinted on aerogel (n = 1.08) and polydimethylsiloxane (PDMS; n = 1.4) substrates. The ultraviolet-visible-near-infrared spectra were observed in the reflection mode on the grating, resulting in sensitivities of 740.2 and 655.9 nm/RIU for the aerogel and PDMS substrates, respectively. Numerical simulations were performed to understand the near-field of the surface plasmon, which demonstrated resonances well correlated with the experimentally observed results. The near-field due to excitation of the surface plasmon polaritons is observed to be more confined and to penetrate deeper into the sensing medium when a low-index substrate is used. | - |
dc.language | English | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.relation.isPartOf | Scientific Reports | - |
dc.title | Air-like plasmonics with ultralow-refractive-index silica aerogels | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/s41598-019-38859-2 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Scientific Reports, v.9, pp.1 - 9 | - |
dc.identifier.wosid | 000459092800035 | - |
dc.citation.endPage | 9 | - |
dc.citation.startPage | 1 | - |
dc.citation.title | Scientific Reports | - |
dc.citation.volume | 9 | - |
dc.contributor.affiliatedAuthor | KIM, WOOKSUNG | - |
dc.identifier.scopusid | 2-s2.0-85061802190 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | PHOTONIC CRYSTAL | - |
dc.subject.keywordPlus | SOL-GEL | - |
dc.subject.keywordPlus | SENSORS | - |
dc.subject.keywordPlus | COATINGS | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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