Title :
Far-infrared absorption spectra by THz radiation: its application to biopolymers
Author :
Yamamoto, Koji ; Tominaga, Kazuhiro ; Sasakawa, H. ; Tamura, A. ; Murakami, H. ; Ohtake, H. ; Sarukura, N.
Author_Institution :
Dept. of Chem., Kobe Univ., Japan
Abstract :
Summary form only given. There has been dramatic progress in generation and detection of freely propagating terahertz (THz) radiation in the late 1990s. THz radiation has been successfully applied to far infrared (FIR) absorption spectroscopy in the field of molecular science. Recently significance of low-frequency modes in biopolymers has been theoretically emphasized through the relation between these modes and functionality of biomolecules. We focused on characteristics of low-frequency modes intrinsic to biopolymers and measured FIR absorption spectra of a protein (cytochrome c) in different conformations and polypeptides (polyglycine and polyalanine) with THz radiation as a light source.
Keywords :
bio-optics; biological tissues; high-speed optical techniques; infrared spectra; submillimetre wave spectra; FIR absorption spectra; THz radiation; biopolymers; cytochrome; far-infrared absorption spectra; functionality; low frequency modes; molecular science; polyalanine; polyglycine; polypeptides; protein; submillimetre wave spectra; Absorption; Finite impulse response filter; Frequency; Light scattering; Light sources; Optical pulse generation; Particle scattering; Proteins; Radiation detectors; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO '01. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-662-1
DOI :
10.1109/CLEO.2001.947849
