Fourier Transform Spectroscopy using Stressed Liquid Crystal
نویسندگان
چکیده
منابع مشابه
Rotational bias of an antiferroelectric liquid crystal studied by polarized Fourier transform infrared spectroscopy
Experimental studies of the absorbance vs polarization angle of the incident ir beam on a cell have been carried out for several absorbance bands in the SmA phase and in electrically induced ferroelectric states F(1) and F(2) of the SmCA* and SmC* phases of an antiferroelectric liquid crystal. The various absorbance profiles are quantitatively analyzed in terms of the rotational bias parameters...
متن کاملFerrielectric liquid crystal subphase studied by polarized fourier-transform infrared spectroscopy
IR dichroism and the structure of a homogeneously aligned cell of a chiral smectic antiferroelectric liquid crystal (R)-1-methylheptyl 4-(4(')-dodecyloxybiphenyl-4-ylcarbonyloxy)-3-fluorobenzoate [with acronym (R)-12OF1M7] in a ferrielectric subphase in the temperature range between the antiferroelectric phase (also referred to as Fi2) and the smectic-C*(SmC*) phase are studied using polarized ...
متن کاملCompressive Fourier Transform Spectroscopy
We describe an approach based on compressive-sampling which allows for a considerable reduction in the acquisition time in Fourier-transform spectroscopy. In this approach, an N-point Fourier spectrum is resolved from much less than N time-domain measurements using a compressive-sensing reconstruction algorithm. We demonstrate the technique by resolving sparse vibrational spectra using <25% of ...
متن کاملFourier Transform Spectroscopy
T he difficulties that always plague an experimental spectroscopist are those associated with resolving power, light-gathering ability, and wavelength and photometric accuracy. He sees a spectrum, such as that of atmospheric water vapor shown in Fig. 1, and deduces from it information about the atoms or molecules which gave rise to it. Such spectrograms can be taken at wavelengths from the far ...
متن کاملFourier Transform Infrared and Fourier Transform Raman Spectroscopy of Polymers
This chapter covers the fundamental principles and current applications of Fourier transform (FT) infrared and Fourier transform Raman spectroscopies as utilized in the analysis of polymeric materials. The primary emphasis of the first part is on the principles and advantages of these interferometric methods, whereas the remaining sections illustrate numerous applications focusing on the struct...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2009
ISSN: 1094-4087
DOI: 10.1364/oe.17.004634