Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 4065 for “"atomic"”.
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Portable Tungsten Coil Atomic Emission and Atomic Fluorescence Spectrometry
Tungsten Coil Atomic Emission Spectrometry is an ideal technique for field applications because of its simplicity, low cost, low power requirement and independence from cooling systems. A new, portable, compact design is reported here. The tungsten coil is extracted from a 24 V, 250 W commercial …
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Near-Atomic Spaces
… discussed in this paper are related to the atomic space problem: Is there an infinite dimensional space with no proper closed infinite dimensional subspace? This question is equivalent to one first posed by A. Pelczynski; namely, does every infinite dimensional metric linear space have an …
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Electroless Atomic Layer Deposition
Thin film growth is studied by many researchers because of broad applications and significant impact on technological development in modern era. However, thin film nucleation and growth is challenging task for many materials with high surface energy and melting temperature. Such systems tend to …
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On-Chip Atomic Spectroscopy
This thesis presents the integration of atomic vapor cells with anti-resonant reflecting optical waveguides (ARROWs) fabricated on silicon chips. These potentially provide a compact platform for a number of optical applications, including the study of quantum coherence effects such as …
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Atomic workers, atomic city : labor and community in Oak Ridge, Tennessee, 1942-1950
Thesis (Ph. D.)--Massachusetts Institute of Technology, Program in Science, Technology, and Society, 1997.
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The Development and Application of an Automated Multielement Atomic Emission/atomic Fluorescence Flame Spectrometer
Made available in DSpace on 2014-12-13T20:09:47Z (GMT). No. of bitstreams: 1 7606973.pdf: 13468746 bytes, checksum: 4cebc020532b33a8ad3a072ecb0e4356 (MD5) Previous issue date: 1975
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Atomic layer deposition of photovoltaics
… and scalability have remained major challenges. Atomic layer deposition (ALD) is a low processing temperature technique capable of providing unrivalled thin-film conformality with uniform sub-nanometre thickness on large scale areas. Its use in depositing thin charge selective contacts as well as …
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Tunneling in Degenerate Atomic Gases
… of Bose-Einstein condensation in cold alkali atomic gases in 1995 has started a period of fertile research at the intersection of atomic physics, quantum optics, and condensed matter. In this thesis, various tunneling effects in both bosonic and fermionic gases are investigated. The first part …
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Atomic processes in nova shells
The unusual spectra of the spatially-resolved nova shells of DQ Her, T Aur and CP Pup are reviewed. Because calculations for these conditions have not been made, recombination models of HI, HeI and CNO from a neutral to a doubly ionized state were constructed. The models are described and the …
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A metrological atomic force microscope
… fabrication, and testing of a metrological atomic force microscope (AFM). This design serves as a prototype for a similar system that will later be integrated with the Sub-Atomic Measuring Machine (SAMM) under development in collaboration with the University of North Carolina at Charlotte. …
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Atomic short-range order determination in gold-25 atomic percent iron and nickel-12.5 atomic percent silicon: A synchrotron x-ray diffuse scattering study
… short-range order (SRO) structure of a Gold-25 atomic percent Iron single crystal was studied using wide-angle diffuse synchrotron x-radiation scattering at room temperature. Two heat-treatments were investigated; a 400$\sp\circ$C aging treatment for two days and a second at 440$\sp\circ$C for …
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Trends in Tungsten Coil Atomic Spectrometry
Renewed interest in electrothermal atomic spectrometric methods based on tungsten coil atomizers is a consequence of a world wide increasing demand for fast, inexpensive, sensitive, and portable analytical methods for trace analysis. In this work, tungsten coil atomic absorption spectrometry …
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Light Propagation in Ultracold Atomic Gases
The propagation of light through an ultracold atomic gas is the main topic of the present work. The thesis consists of two parts. In Part I (Chapters 1,2,3), we give a complete description of the 1D photonic bands of a MI of two-level atoms paying attention to both band diagrams and reflectivity …
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Atomic Broadcast in Heterogeneous Distributed Systems
<p>Communication services have long been recognized as possessing a dominant effect on both performance and robustness of distributed systems. Distributed applications rely on a multitude of protocols for the support of these services. Of crucial importance are multicast protocols. Reliable …
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A Network Approach to Atomic Spectra
In this thesis we investigate atomic spectra using network theory. The spectroscopic data of an atom is mapped onto a network by identifying nodes with energy levels and links with optical transitions. These so-called spectroscopic networks are almost bipartite, which is ascribed to the parity …
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Atomic Structure Study of Metallic Nanoparticles
Made available in DSpace on 2017-07-06T18:48:50Z (GMT). No. of bitstreams: 3 Ji_Li_MS.pdf: 6656305 bytes, checksum: 5b18c54244ccb562930faec4c69c39f2 (MD5) Ji_Li_MS_ABS.pdf: 10304 bytes, checksum: 10f22d26ec0cdaaed80918c03176e497 (MD5) license.txt: 4813 bytes, checksum: …
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