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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 991 to 1000 of 29952 (0.05 seconds)Spelling suggestions: "subject:"state, ehe"" "subject:"state, hhe""
| 991 |
Electrical and optical properties of Cu-GeOâ†2 thin solid films prepared by vacuum co-evaporationLucy, Irine Banu January 1997 (has links)
No description available.
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| 992 |
X-ray photoelectron spectroscopic studies of certain metals and alloys through the solid/liquid transitionMalra, Gurjinder Kaur January 1989 (has links)
No description available.
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| 993 |
A study of electron paramagnetic resonance and some optical and electrical properties in thin dielectric oxide filmsArshak, K. I. January 1986 (has links)
No description available.
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| 994 |
Studies of the optical and electrical properties of some dielectric oxide filmsIslam, M. H. January 1987 (has links)
No description available.
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| 995 |
Switching phenomena in stearic acid MIM structures and conduction phenomena in stearic acid thin films on metal and semiconductor substratesGinige, Ravin January 1989 (has links)
No description available.
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| 996 |
The deposition of titanium dioxide on silica surfacesWong, W. K. January 1982 (has links)
No description available.
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| 997 |
Aspects of the chemistry of metal oxide semiconductor gas sensorsBarrett, Edward Patrick Stephen January 1991 (has links)
No description available.
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| 998 |
Electrical and optical properties of some metal/SiOâ†x thin film systemsZaidi, Syed Zulfiqar Ali January 1996 (has links)
No description available.
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| 999 |
Optical properties and electrical conduction mechanisms of electron beam evaporated Cu-GeO2 thin cermet filmsRahman, M. Habibur January 1995 (has links)
Optical, DC, and Hall effect measurements were performed on a number of Cu-GeO2 thin cermet films with the aim of obtaining information about DC conduction mechanism. Optical absorption studies showed that incorporation of Cu in the matrix of GeO2 introduces defect states leading to a reduction in the optical energy gap. The DC conductivity results revealed that above a certain temperature Tc, conductivity increases sharply with activation energy lying in the range 0.66 to 0.77 eV. Below Tc, the conductivity is weakly activated with activation energy lying in the range 0.10 to 0.25 eV. A sign reversal in Hall mobility was observed for all the samples. Furthermore, the Hall mobility showed a maximum at a critical temperature (Tc) identical to that of the DC conductivity. This suggests that the DC conductivity is dominated by a mixed conduction process and the small polaron model best describes the conduction mechanism. From the combined knowledge of optical absorption, DC conductivity and Hall effect results a room-temperature band diagram (for 30 at.wt% Cu films) is proposed in which the mobility gap is calculated to be 3.78 eV. Above Tc, the mobility gap reduces to 2.62 eV. The frequency response of dielectric loss and the AC conductivity showed striking minima around a cut-off frequency (fm≈10⁵ Hz) indicating that a single universal power-law cannot describe the conduction mechanism for the entire frequency range. Instead, a two power-law hypothesis is advanced. Below 10⁵ Hz, the small polaron tunnelling model best describes the conduction mechanism, while above 10⁵ Hz, the conductivity is identified with photon-activated resonant processes.
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| 1000 |
Numerical investigation of hydrodynamic behaviour of immiscible metallic alloysTang, Hao January 2003 (has links)
No description available.
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