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1 
Combined Fourier techniquesAlston, D. January 1988 (has links)
No description available.

2 
Attenuated total reflectance/Fourier transform infrared spectroscopy as a method to study plasma protein adsorption on surfacesBellissimo, Joseph Ambrose. January 1984 (has links)
Thesis (M.S.)University of WisconsinMadison, 1984. / Typescript. eContent providerneutral record in process. Description based on print version record. Includes bibliographical references (leaves 9498).

3 
High terahertz absorbing nanoscale metal films for fabrication of micromechanical bimaterial THz sensorsBolakis, Christos. January 2010 (has links) (PDF)
Thesis (M.S. in Physics)Naval Postgraduate School, June 2010. / Thesis Advisor(s): Karunasiri, Gamani ; Grbovic, Dragoslav. "June 2010." Description based on title screen as viewed on July 15, 2010. Author(s) subject terms: Bimaterial Pixel, Terahertz Imaging, Deformation, Multilayer stack, Terahertz Absorption, COMSOL finite element modeling, Fresnel's Equations, Dielectric Bragg reflector, FTIR Spectroscopy, maximizing the THz absorption. Includes bibliographical references (p. 5152). Also available in print.

4 
Fouriertransform microwave spectroscopy of cyclopropylmethylgermane and van der Waals complexes of fluorinated methanes /Serafin, Michal M., January 2008 (has links) (PDF)
Thesis (M.S.)Eastern Illinois University, 2008. / Includes bibliographical references (pp. 16, 30, 49, 69, 95, 126).

5 
Diffractive optical elements for interconnectionsZhou, Zhiping James 12 1900 (has links)
No description available.

6 
CONTROL AND DATA ACQUISITION FOR A HIGH RESOLUTION DYNAMIC FOURIER TRANSFORM SPECTROMETERMcCurnin, Thomas William, 1931 January 1981 (has links)
A Fourier Transform Spectrometer (FTS) is an interferometric instrument configured so that the optical spectrum of the input to the instrument can be determined from the Fourier transform of the output. Spectral resolution is proportional to the maximum path differences in the interferometer. The Kitt Peak 1Meter FTS is a high resolution instrument featuring a onemeter maximum path difference. The instrument is of the continuous motion type and utilizes equal time sampling of the interferogram. Realization of the potential of a onemeter path difference instrument requires very precise path difference positioning. Static and dynamic position accuracies of approximately seven Angstrom units are achieved in this instrument. Path difference command and control is accomplished through use of phaselock techniques. A key element in the implementation is a Zeeman frequency stabilized Zeeman laser. Stabilization is accomplished by phaselocking the Zeeman frequency to a quartz crystal controlled system reference frequency. Path position information is derived by a control position interferometer which utilizes the Zeeman laser so that one cycle in phase at the Zeeman frequency corresponds to one wavelength in path difference at the laser optical frequency. Position control is achieved by phaselocking the output of the position control interferometer to a command signal. The command signal is synthesized from the laser Zeeman frequency by an additional phaselock loop. Two approaches to minimizing spectral ghosts resulting from velocity errors are developed. One technique is applicable to bandpass designs. The second optimizes response of lowpass designs that include a single highpass pole to reject the average value of the interferogram. Both techniques result in ghost responses improved by factors of at least ten to onehundred compared with those of conventional data filters. The instrument includes an autoranging analogtodigital converter with fifteen bits of resolution and total range of twentytwo bits developed to cope with the large dynamic range of the interferogram. These efforts together with careful design and construction have resulted in a powerful instrument which is in active use.

7 
FOURIER transform ion cyclotron resonance spectroscopyMelka, Joe David January 1978 (has links)
Chapter II of this thesis describes the operation of a Fourier Transform Ion Cyclotron Resonance Spectrometer. Included is a detailed discussion of software which was developed to run the spectrometer and analyze the data. An automatic data acquisition system for kinetic experiments is also described.
Chapter III contains a short discussion of discrete versus continuous methods of data acquisition and problems with the FTICR method which utilizes discrete sampling. Two techniques
are discussed which have been found to solve problems associated with a digital system, acquisition by "mixing" and zerofilling. Also, mass calibrations done on the FTICR spectrometer are presented.
The reactions of some negative ions with esters in the
gas phase have been studied by FTICR and are discussed in
Chapter IV. The reactions of ¹⁸0 labelled methoxide with
methyl trifluoroacetate, methyl benzoate, dimethyl carbonate,
diethyl carbonate and dipropyl carbonate have been studied.
It was found that there is incorporation of ¹⁸0 in product ions of the form RCOO⁻ showing that methoxide attacks esters in the gas phase partially at carbonyl carbon. Product distributions
are found to be consistent with two competing
mechanisms, B[sub AC]2 and S[sub N]2. Thus it was found that CH₃•0⁻
reacts with C₆H₅COOCH₃ 92% by a B[sub AC]2 type mechanism and 8% by
an S[sub N]2 type mechanism. The amount of ¹⁸0 incorporation in
product ions was seen to decrease with the presence of β hydrogens, due to the presence of an elimination channel. The reaction of ethoxide with the above named esters was studied and the products are also interpreted in terms of three competing mechanisms, B[sub AC]2, S[sub N]2 and elimination. / Science, Faculty of / Chemistry, Department of / Graduate

8 
'n Fouriertransformasie infrarooi en ultravioletsigbare spektroskopiese ondersoek van verskillende gemodifiseerde oppervlaktes14 October 2015 (has links)
M.Sc.(Chemistry) / Fourier transform infrared and ultravioletvisible spectroscopy were used in this study. The relative merits of dispersive and interferometric instrumentation were investigated and the latter revealed a dramatic improvement in accuracy. In the infrared study transmission and diffuse reflectance techniques were used and compared. The diffuse reflectance technique provides more information regarding surface species, like OHgroups and interactions between adsorbent and adsorbate, than the transmission technique ...

9 
Some experiments in holographic fouriertransform spectroscopy. / Chuan hsi kuang p'u hsuehJanuary 1976 (has links)
Thesis (M.Phil.)Chinese University of Hong Kong. / Bibliography: leaf 61.

10 
A Computationally Efficient 1024Point FFT Processor with Only a Subset of NonZero InputsWu, JianShiun 26 August 2008 (has links)
Fast Fourier transformation (FFT) is a powerful analytical tool with wideranging applications in many fields. The standard FFT algorithms inherently assume that the length of the input and output sequence are equal. In practice, it is not always an accurate assumption. In certain case only some of the inputs to the transformation function are nonzero but lot of other are zero. In this thesis, a novel architecture of a 1024point FFT, which adopts the transform decomposition (TD) algorithm, is presented to further reduce the complexity when the nonzero input data are consecutive. To implement this FFT processor, fixed point simulation is a conducted by using MATLB. The hardware implementation is realized by using the Verilog Hardware Description Language (HDL) which is taped out in TSMC0.18 CellBased Library for system verification.

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