TY - GEN
T1 - Surface Enhanced Infrared Absorption Spectroscopy with Broadband Nanoantenna
AU - Ni, Jing
AU - Bian, Yupei
AU - An, Donglai
AU - Yu, Xia
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - The infrared absorption spectra of analytes with many types of chemical bonds tend to have multiple absorption peaks in a broad band. Therefore, using the surface-enhanced infrared absorption (SEIRA) spectroscopic analysis system in an appropriate enhancing band would be helpful to improve its sensitivity. In this paper, the nanoantenna called six-pointed asterisk has been designed to have double resonance peak when irradiated by non-polarized light. The size of gold nanoantenna to obtain specific resonance peaks excited by different polarized light is designed based on linear wavelength scaling rule. At the same time, the arrangement period of nanoantenna array is selected by considering the collective resonance of nanoantenna array. The results of FDTD simulation are consistent with theoretical analysis. For the six-pointed asterisk array covering 1400-1000 cm-1 (7.14-10 μm) as the specific requirement, the EFs were calculated as follows, EFmin = EF7.14 μm ≈ 8.8×103, EF10 μm ≈ 1.2×104 and the EFmax ≈ 1.7×104. The designed six-pointed asterisk nanoantenna has the potential to customize a broad enhancing band in the SEIRA analysis system.
AB - The infrared absorption spectra of analytes with many types of chemical bonds tend to have multiple absorption peaks in a broad band. Therefore, using the surface-enhanced infrared absorption (SEIRA) spectroscopic analysis system in an appropriate enhancing band would be helpful to improve its sensitivity. In this paper, the nanoantenna called six-pointed asterisk has been designed to have double resonance peak when irradiated by non-polarized light. The size of gold nanoantenna to obtain specific resonance peaks excited by different polarized light is designed based on linear wavelength scaling rule. At the same time, the arrangement period of nanoantenna array is selected by considering the collective resonance of nanoantenna array. The results of FDTD simulation are consistent with theoretical analysis. For the six-pointed asterisk array covering 1400-1000 cm-1 (7.14-10 μm) as the specific requirement, the EFs were calculated as follows, EFmin = EF7.14 μm ≈ 8.8×103, EF10 μm ≈ 1.2×104 and the EFmax ≈ 1.7×104. The designed six-pointed asterisk nanoantenna has the potential to customize a broad enhancing band in the SEIRA analysis system.
KW - mid-infrared optics
KW - nanoantenna
KW - surface-enhanced infrared absorption spectroscopy
UR - https://www.scopus.com/pages/publications/85153895363
U2 - 10.1109/ACP55869.2022.10089053
DO - 10.1109/ACP55869.2022.10089053
M3 - 会议稿件
AN - SCOPUS:85153895363
T3 - Asia Communications and Photonics Conference, ACP
SP - 2055
EP - 2059
BT - 2022 Asia Communications and Photonics Conference, ACP 2022 and International Conference on Information Photonics and Optical Communications, IPOC 2022
PB - Optica Publishing Group (formerly OSA)
T2 - 2022 Asia Communications and Photonics Conference, ACP 2022 and International Conference on Information Photonics and Optical Communications, IPOC 2022
Y2 - 5 November 2022 through 8 November 2022
ER -