Results 21 to 30 of about 606 (208)

SURFACE ENHANCED INFRARED ABSORPTION SPECTROSCOPY

Analytical Sciences, 1991
Infrared (IR) absorption of molecules is enhanced greatly (10 1 -10 3 times) when they are adsorbed on or near vacuum-evaporated Ag or Au thin films. By using this Surface Enhanced IR Absorption (SEIRA) phenomenon, we could obtained IR spcctra of some organic molecules of a few picogram amount in good signal-to-noise ratios.
OSAWA, MASATOSHI, ATAKA, KEN-ICHI, IKEDA, MASAHIKO, UCHIHARA, HIROSHI, NANBA, RYUJIRO   +4 more
openaire   +2 more sources

Narrowband Perfect Absorber Based on Dielectric-Metal Metasurface for Surface-Enhanced Infrared Sensing

Applied Sciences, 2020
We proposed a narrowband perfect absorber that was based on dielectric-metal metasurface for wide-band surface-enhanced infrared sensing. It is found that the narrowband perfect absorber can generate the hybrid guided modes with high quality-factor at ...
Guilian Lan, Zhongxie Jin, Jinpeng Nong, Peng Luo, Caicheng Guo, Zhengguo Sang, Lei Dong, Wei Wei   +7 more
doaj   +1 more source

Thermoplasmonic Effect of Surface-Enhanced Infrared Absorption in Vertical Nanoantenna Arrays [PDF]

The Journal of Physical Chemistry C, 2018
17 pages, 4 ...
Andrea Mancini, Valeria Giliberti, Alessandro Alabastri, Eugenio Calandrini, Francesco De Angelis, Denis Garoli, Michele Ortolani   +6 more
openaire   +4 more sources

Investigation on Optical Absorption and Reflection of Carbon Nanotubes Mixed Copper Composites for Laser Sintering Process Improvement

Metals, 2023
Selective laser sintering (SLS) of copper components manufactured via powder metallurgy is widely studied due to minimal material wastage. However, copper has poor optical absorption when exposed to infrared (IR) lasers, such as in laser-based additive ...
Hasan Ayub, Lehar Asip Khan, Eanna McCarthy, Inam Ul Ahad, Karsten Fleischer, Dermot Brabazon   +5 more
doaj   +1 more source

Lattice Rayleigh Anomaly Associated Enhancement of NH and CH Stretching Modes on Gold Metasurfaces for Overtone Detection

Nanomaterials, 2020
Molecular overtones stretching modes that occupy the near-infrared (NIR) are weak compared to the fundamental vibrations. Here we report on the enhancement of absorption by molecular vibrations overtones via electromagnetic field enhancement of plasmonic
Daler R. Dadadzhanov, Tigran A. Vartanyan, Alina Karabchevsky   +2 more
doaj   +1 more source

Self-assembled metal-oxide nanoparticles on GaAs: infrared absorption enabled by localized surface plasmons

Nanophotonics, 2021
Metal-oxides hold promise as superior plasmonic materials in the mid-infrared compared to metals, although their integration over established material technologies still remains challenging.
Martínez Castellano Eduardo, Tamayo-Arriola Julen, Montes Bajo Miguel, Gonzalo Alicia, Stanojević Lazar, Ulloa Jose María, Klymov Oleksii, Yeste Javier, Agouram Said, Muñoz Elías, Muñoz-Sanjosé Vicente, Hierro Adrian   +11 more
doaj   +1 more source

Graphene plasmonics for surface enhancement near-infrared absorptivity

Optics Express, 2017
Monolayer graphene has poor absorption in the near-infrared region. Its layer is only as thick as a single atom so it cannot have a high absorptivity. In this paper, in order to form a hybrid system, the absorption characteristics of monolayer graphene covering a metal/dielectric/metal substrate has been theoretically analyzed.
QingHui, Pan, JiaRong, Hong, GuoHua, Zhang, Yong, Shuai, HePing, Tan   +4 more
openaire   +2 more sources

Potential-induced interfacial restructuring of a pyrrolidinium-based ionic liquid on an Au electrode: Effect of polarization of constituent ions

Electrochemistry Communications, 2019
Potential-induced restructuring of 1-propyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)amide [C3mpyr][TFSA] on an Au electrode has been investigated by using surface-enhanced infrared absorption spectroscopy (SEIRAS).
Kenta Motobayashi, Yuhei Shibamura, Katsuyoshi Ikeda   +2 more
doaj   +1 more source

(INVITED)Surface enhanced infrared absorption spectroscopy using plasmonic nanostructures: Alternative ultrasensitive on-chip biosensor technique

Results in Optics, 2022
The increasing demand for more reliable and cost effective biosensors has steered development of various novel biosensor platforms. Sensors based on optical techniques have attracted much attention because of their advantages, such as immune to ...
Mohammed Janneh
doaj   +1 more source

Research Progress in Surface-Enhanced Infrared Absorption Spectroscopy: From Performance Optimization, Sensing Applications, to System Integration

Nanomaterials, 2023
Infrared absorption spectroscopy is an effective tool for the detection and identification of molecules. However, its application is limited by the low infrared absorption cross-section of the molecule, resulting in low sensitivity and a poor signal-to ...
Dongxiao Li, Cheng Xu, Junsheng Xie, Chengkuo Lee   +3 more
doaj   +1 more source