부산풀싸롱
FTIR or Fourier-Transform Infrared Spectroscopy is a measurement technique whereby spectra is collected based on the response from a pulse of electromagnetic radiation. It can be applied to various types of spectroscopy including infrared spectroscopy, nuclear magnetic resonance and electron spin resonance spectroscopy. Fourier transform spectroscopy is more sensitive and has a much shorter sampling time than conventional spectroscopic techniques.
How it works
In a conventional spectrometer, a sample is exposed to electromagnetic radiation and the response is monitored. The energy of the radiation is varied over the desired range and the response is plotted as a function of radiation energy. At certain resonant frequencies characteristic of the specific sample, the radiation will be absorbed resulting in a series of peaks in the spectrum, which can then be used to identify the sample.
Instead of varying the energy of the electromagnetic radiation, Fourier Transform Infrared Spectroscopy exposes the sample to a single pulse of radiation and measures the response. The resulting signal called free induction decay contains a rapidly decaying composite of all...