Infrared Absorption Spectroscopic Technique for Biosensing

Infrared Technique for Measuring Ultrasonic Absorption in Polycrystalline Metals

Chalcogenide Glass Optical Waveguides for Infrared Biosensing

Due to the remarkable properties of chalcogenide (Chg) glasses, Chg optical waveguides should play a significant role in the development of optical biosensors. This paper describes the fabrication and properties of chalcogenide fibres and planar waveguides. Using optical fibre transparent in the mid-infrared spectral range we have developed a biosensor that can collect information on whole meta...

Gold Nanoring Arrays for Near Infrared Plasmonic Biosensing

Gold nanoring array surfaces that exhibit strong localized surface plasmon resonances (LSPR) at near infrared (NIR) wavelengths from 1.1 to 1.6 μm were used as highly sensitive real-time refractive index biosensors. Arrays of gold nanorings with tunable diameter, width, and spacing were created by the nanoscale electrodeposition of gold nanorings onto lithographically patterned nanohole array c...

Infrared Spectroscopic Diagnostics for Active Galactic Nuclei

Infrared spectroscopy in the midand far-infrared provides powerful diagnostics for studying the emission regions in active galaxies. The large variety of ionic fine structure lines can probe gas conditions in a variety of physical conditions, from highly ionized gas excited by photons originated by black hole accretion to gas photoionized by young stellar systems. The critical density and the i...

Electrical Conductivity, Near-Infrared Absorption, and Thermal Lens Spectroscopic Studies of Percolation of Microemulsions

Microemulsions of negatively charged (sodium bis(2-ethylhexyl)sulfosuccinate, AOT) and positively charged (dodecylmethylbutylammonium bromide and benzyldimethylhexadecylammonium chloride) surfactants were studied below and above the percolation thresholds by electrical conductivity, near-infrared absorption, and thermal lens spectrometry. It was found that the AOT microemulsions undergo percola...