منابع مشابه
Surface-Enhanced Infrared Absorption
Molecules adsorbed on metal island films or particles exhibit 10–1000 times more intense infrared absorption than would be expected from conventional measurements without the metal. This effect is referred to as surface-enhanced infrared absorption (SEIRA) to emphasize the similarities with surface-enhanced Raman scattering (SERS). The electromagnetic interactions of the incident photon field w...
متن کاملDouble-layered nanoparticle stacks for surface enhanced infrared absorption spectroscopy.
We demonstrate that double-layered stacks of gold and insulator nanoparticles arranged on a flat gold surface dramatically enhance the sensitivity in absorption infrared microscopy. Through morphological variations of the nanoparticles, the frequency of the plasmon resonances can be tuned to match the frequency of the molecular vibration in the mid-infrared region. The results show that the nan...
متن کاملBiochemical applications of surface-enhanced infrared absorption spectroscopy
An overview is presented on the application of surface-enhanced infrared absorption (SEIRA) spectroscopy to biochemical problems. Use of SEIRA results in high surface sensitivity by enhancing the signal of the adsorbed molecule by approximately two orders of magnitude and has the potential to enable new studies, from fundamental aspects to applied sciences. This report surveys studies of DNA an...
متن کاملSurface-enhanced infrared absorption studies towards a new optical biosensor
Reflectometric interference spectroscopy (RIfS), which is well-established in the visual regime, measures the optical thickness change of a sensitive layer caused, e.g., by binding an analyte. When operated in the mid-infrared range the sensor provides additional information via weak absorption spectra (fingerprints). The originally poor spectra are magnified by surface-enhanced infrared absorp...
متن کاملAll-Semiconductor Plasmonic Resonator for Surface-Enhanced Infrared Absorption Spectroscopy
Infrared absorption spectroscopy remains a challenge due to the weak light-matter interaction between micron-wavelengthed infrared light and nano-sized molecules. A highly doped semiconductor supports intrinsic plasmon modes at infrared frequencies, and is compatible with the current epitaxial growth processing, which makes it promising for various applications. Here, we propose an all-semicond...
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ژورنال
عنوان ژورنال: SCIENTIA SINICA Physica, Mechanica & Astronomica
سال: 2019
ISSN: 1674-7275
DOI: 10.1360/sspma-2019-0080