Abstract
Circular dichroism (CD), the difference in absorption of two opposite circularly polarized light by chiral molecules. Based on the generalized Poynting's theorem for chiral media, we reveal the origin of the CD in the chiral molecule/ nanostructure system. We find that CD enhancement arises through two distinct CD channels - inherent and induced. The inherent CD channel is direct molecular CD enhanced by strongly localized optical helicity density near the nanostructure. The induced CD channel, previously ignored, is asymmetric excitation and absorption of electromagnetic fields inside nanostructures surrounded by chiral molecules. We demonstrate that the induced CD channel can be significant in CD signals of entire system.
| Original language | English |
|---|---|
| Title of host publication | Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 |
| Publisher | OSA - The Optical Society |
| Volume | Part F122-CLEOPR 2017 |
| ISBN (Electronic) | 9781557528209 |
| Publication status | Published - 2017 Jan 1 |
| Event | Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 - Singapore, Singapore Duration: 2017 Jul 31 → 2017 Aug 4 |
Other
| Other | Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017 |
|---|---|
| Country | Singapore |
| City | Singapore |
| Period | 17/7/31 → 17/8/4 |
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Keywords
- Biosensing
- Chirality
- Circular dichroism
- Component
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Mechanics of Materials
Cite this
Analysis on the surface-enhanced circular dichroism spectroscopy. / Lee, Seojoo; Yoo, Seok Jae; Park, Q Han.
Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017. Vol. Part F122-CLEOPR 2017 OSA - The Optical Society, 2017. s1332.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Analysis on the surface-enhanced circular dichroism spectroscopy
AU - Lee, Seojoo
AU - Yoo, Seok Jae
AU - Park, Q Han
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Circular dichroism (CD), the difference in absorption of two opposite circularly polarized light by chiral molecules. Based on the generalized Poynting's theorem for chiral media, we reveal the origin of the CD in the chiral molecule/ nanostructure system. We find that CD enhancement arises through two distinct CD channels - inherent and induced. The inherent CD channel is direct molecular CD enhanced by strongly localized optical helicity density near the nanostructure. The induced CD channel, previously ignored, is asymmetric excitation and absorption of electromagnetic fields inside nanostructures surrounded by chiral molecules. We demonstrate that the induced CD channel can be significant in CD signals of entire system.
AB - Circular dichroism (CD), the difference in absorption of two opposite circularly polarized light by chiral molecules. Based on the generalized Poynting's theorem for chiral media, we reveal the origin of the CD in the chiral molecule/ nanostructure system. We find that CD enhancement arises through two distinct CD channels - inherent and induced. The inherent CD channel is direct molecular CD enhanced by strongly localized optical helicity density near the nanostructure. The induced CD channel, previously ignored, is asymmetric excitation and absorption of electromagnetic fields inside nanostructures surrounded by chiral molecules. We demonstrate that the induced CD channel can be significant in CD signals of entire system.
KW - Biosensing
KW - Chirality
KW - Circular dichroism
KW - Component
UR - http://www.scopus.com/inward/record.url?scp=85059504681&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059504681&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85059504681
VL - Part F122-CLEOPR 2017
BT - Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2017
PB - OSA - The Optical Society
ER -