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Showing 1 to 20 of 86 for “"infrared absorption"”.
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Nanoscale infrared absorption imaging and tomography
… of contact mode Atomic Force Microscopy – Infrared (AFM-IR) spectroscopic imaging to enable accurate, nanoscale infrared absorption imaging. We first describe the analytical solution of a rectangular cross-section cantilever beam mechanically coupled to a vertically-perturbed surface. From …
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Infrared absorption of neutron irradiated silicon
In this work the infrared absorption of neutron irradiated silicon was compared to that of non-irradiated silicon at room and liquid nitrogen temperatures. It was found that instead of the 1.75 micron absorption band that has been mentioned in numerous papers transmission was completely cut off …
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Far-Infrared Absorption in Superconducting Niobium Alloys
Made available in DSpace on 2015-05-12T21:41:38Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6706577.PDF: 2096168 bytes, checksum: 6e08bb7e63ba99bcf69c936394942609 (MD5) Previous issue date: 1966
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Far infrared absorption in superconducting niobium alloys
… system Zr - Nb - Mo have been measured by the absorption of far-infrared radiation. The gap edges are sharp and there is no notable structure on the curves. No ,attempt was made to compare the shapes of the curves with theory, since certain parameters required for the theoretical calculation …
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Structural Aspects of Clay Minerals Using Infrared Absorption
Made available in DSpace on 2014-12-04T19:14:11Z (GMT). No. of bitstreams: 1 6104406.pdf: 3936280 bytes, checksum: 86448d1c45a06ba1ca6de484d6abb8b1 (MD5) Previous issue date: 1961
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An infrared absorption study of lithium in silicon
Lithium, lithium oxide, and the group V elements, phosphorus, arsenic, antimony, and bismuth, when present in silicon as impurities, act as "shallow" donors (2, 7, 11). These donors have electrons which are bound so loosely that they may be thermally excited into the conduction band at less than …
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Infrared Absorption by Localized Polarons in the Sliver Halides
Made available in DSpace on 2015-05-12T21:41:44Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6808030.PDF: 3329990 bytes, checksum: 224ccd657a1bce119f04481caba960ab (MD5) Previous issue date: 1967
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Infrared absorption by localized polarons in the silver halides
The infrared absorption of silver halide crystals, induced by simultaneous illumination of the crystals with light whose energy exceeded the indirect band gap, was measured from 33 to 2000 cm-1 at temperatures from. 90 K to 40 0 K. The induced far infrared absorption was shown to be in agreement …
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Infrared absorption studies on barium titanate and related crystals
Thesis (Ph.D.) Massachusetts Institute of Technology. Dept. of Physics, 1956.
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Pressure broadening of infrared absorption lines at moderate densities.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 1976
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The far-infrared absorption spectrum of low temperature hydrogen gas
The far-infrared absorption spectrum of normal hydrogen gas has been measured from 20-320 cm' (A=500-31 pm), over the temperature range 21-38 K, and the pressure range0.6-3 atmospheres. The spectra cover the very weak and broad collision-induced translational absorption band of 112 which at these …
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Near infrared absorption by SH<sup>-</sup> in alkali halides
<p>The near infrared absorption spectrum of SH<sup>-</sup> in KCl, KBr, KI, RbCl, RbBr, and RbI has been measured over a range of temperatures extending from room temperature down to 1.1° K. The dependence of the absorption spectra on an externally applied electric field was also measured at liquid …
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The investigation of infrared absorption intensities in hydrogen-bonded complexes
… complexes is explored through the use of infrared spectroscopy. Vibrational predissociation of strongly hydrogen bonded dimers has been performed using the molecular beam depletion technique. An investigation of the O-H stretches in (CH$\sb3$OH)$\sb2$ under low resolution (OPO linewidth = …
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Infrared absorption in doped semiconductors due to direct intersubband transitions
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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An infrared absorption study of the bismuth donor in silicon
… state significantly populated so that, by using infrared radiation, for example, transitions may be induced from the ground state to the excited states and continuum. Thus the energies of the excited states relative to the ground state may be determined. Our data shows evidence that the 1s state …
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Surface Enhanced Infrared Absorption on Au Nanoparticle Films for Optical Biosensing
… on the investigation of surface enhanced infrared ab- sorption (SEIRA) of adsorbates on wet chemically prepared Au nanoparticle (AuNP) films. Optical properties of AuNP films were investigated with VIS spectroscopy; it was shown, that it is possible to describe these properties with …
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Near Infrared Absorption Bands of the Hydroxyl Ion in Alkali-Halide Crystals
Made available in DSpace on 2015-05-12T21:41:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6801880.PDF: 2794999 bytes, checksum: efd2c87f4a26755cda473293c629510a (MD5) Previous issue date: 1967
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Near infrared absorption bands of the hydroxyl ion in alkali halide crystals
The near infrared absorption bands due to OH- in NaC1, NaBr, KCI, KBr, KI, and RbC1 have been measured at temperatures ranging from 1.4~ to 380 oK. Energy levels of the hydroxyl dipole in the crystal lattice were determined from the spectra. The crystals were grown by the Czochra1ski m~thod in a …
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