Surface-enhanced infrared absorption

Abstract

Covalent immobilization of oligoDNA on the surface of magnetic nanoparticles and surface-enhanced Raman scattering study

Analysis On Surface Enhanced Infrared Absorption Characteristics of Multi-Resonance Optical Antenna

“…The functional groups which constitute different molecules all have corresponding vibration modes. Different vibration periods correspond to different energy levels, and many information such as components and structure of molecules can be reflected by different energy levels [1].To enable high-sensitive molecular detection in nanodevices, various optical nano sensors have been studied, including the plasmonic nanoantenna [2], the fully dielectric metasurface [3], and the photon-sup-chip waveguide device [4]. Since the combination of infrared spectral vibration characteristics and the electric field enhancement induced by local surface plasmon resonance (LSPR), high sensitivity detection can be achieved, surface-enhanced infrared absorption based on LSPR has widely applications in many fields.…”

“…On this basis, the local electric field can resonant with the specific molecular functional group and absorb the light of the corresponding wavelength. Using infrared spectroscopy can achieve the purpose of accurate and efficient identification and detection of molecules [1]. The work of Novotny shows that one-dimensional nano rod, which produce plasmon resonance along the long axis when excitated by the incident light field, can produce a resonance peak.…”

“…Where L is the length of the antenna, m is the number of vibration modes, n is the refractive index of the surrounding environment, a1 and a2 are related to the properties, the cross-section area, and the incident wave phase of the material. The resonance wavelength can be roughly calculated through this formula [1]. The geometry of one-dimensional rod nanoantenna is usually designed to realize single resonance mode.…”