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.
Results
Showing 1 to 10 of 10 for “"platinum clusters"”.
-
Growth of Platinum Clusters in Solution and on Biopolymers: The Microscopic Mechanisms
Thema der vorgelegten Dissertation ist der Mechanismus der Keimbildung und des Wachstums von Platinclustern in Lösung und auf Biopolymeren nach der Reduktion von Platin-Salzen. Die Untersuchung wird auf atomarer Skala durch ab-initio Molekulardynamik mit der Methode von Car und Parrinello …
-
The development of a local orbital method and its applications to aluminum and platinum clusters
… This new method was applied to study Al and Pt clusters. For the Al clusters we used an $sp\sp3$ basis set, and for Pt clusters we used a $sp\sp3d\sp5$ basis set.
-
An NMR study of diffusion of carbon monoxide on metal surfaces
… of carbon monoxide on supported palladium and platinum clusters by Nuclear Magnetic Resonance. As part of these studies, a novel NMR technique for studying diffusion (called an S-shape sequence) has been implemented.
-
Methods for the development of a DNA based nanoelectronics
… in the formation of continuous chains of 5nm platinum clusters along the DNA. The metal deposition process turned out to take place exclusively at the DNA while background metallization is completely suppressed.
-
Synthesis of Metallic Nanowires Using Integrated DNA Molecules as Templates
… in-situ photoinduced nucleation and growth of platinum clusters of 4 nm diameter along the DNA molecules. In the synthesis exclusively platinum ions from an aqueous platinum nitrate solution bonded electrostatically to the backbone of the immobilized DNA can be reduced upon irradiation with UV …
-
NMR studies of acetylene absorbed on supported platinum catalysts
… (C2H2) adsorbed at room temperature on supported platinum catalysts. Measurements from 77""K to 158°K of the spin-lattice relaxation behavior of carbon-13 reveal multiple-exponential behavior. Calculations rule out an anisotropic T 1 as an explanation for the multiple-exponential behavior. …
-
Aromatization over platinum/zeolite L catalysts : the effect of oxygenates
In 1980, Bernard reported that platinum dispersed on zeolite LTL (Pt/KU had exceptionally high selectivity for the aromatization of n-hexane to benzene. The selectivity was ca. 95 at 99 conversion of n-hexane. This Pt/KL catalyst has been extensively studied to determine the reasons for the …
-
Transport modeling of simple fluids and nano-colloids : thermal conduction mechanisms and coarse projection
… is examined. For a specific system of nanosized platinum clusters which interact strongly with host liquid xenon, a significant thermal conductivity enhancement is obtained as a result of self correlation in the potential energy flux. The effect saturates at higher volume fractions due to the …
-
An NMR study of diffusion of CO on metal surfaces
… of carbon monoxide on supported palladium and platinum clusters by Nuclear Magnetic Resonance. As part of these studies, a novel NMR technique for studying diffusion (called an S-shape sequence) has been implemented. He finds that the CO adlayer on Pd may be present in one of two phases, a low …