An experimental setup for nondestructive deposition of size-selected clusters
نویسندگان
چکیده
منابع مشابه
Formation, deposition and examination of size selected metal clusters on semiconductor surfaces: An experimental setup
An instrument designed to investigate the chemical behavior of size selected metal clusters on semiconductor surfaces is described. The clusters re formed using laser vaporization, mass selected in a magnetic mass analyzer and deposited on TiO2 substrates under UHV conditions with + + mpact energies ranging from ≤1 to >100 eV/atom. Intensities of mass selected Aun and Agn clusters range from 0....
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This work describes construction of a source and optimisation of its parameters for production of cluster ion beams using material ablation by the second harmonic of a Nd:YAG laser (532 nm). The influence of different source parameters such as carrier gas pressure, laser power, delay time between gas, and laser pulses as well as nozzle configuration on the cluster formation are studied. For the...
متن کاملSize Selected Clusters on Surfaces
Size selected metal oxide, sulfide and oxynitride clusters, soft-landed onto highly ordered pyrolytic graphite (HOPG) at room temperature, have been studied in this work. Based on their size and chemical compositions, the deposited clusters have exhibited various surface structures as illustrated by in situ Scanning Tunnelling Microscope (STM) and ex situ Atomic Force Microscope (AFM). In contr...
متن کاملParallel deposition of size-selected clusters: a novel technique for studying size-selectivity on the atomic scale.
A new size-selected cluster deposition technique referred to as "parallel-deposition" is presented. An ion beam of multi-sized Aun clusters was spatially separated into individual cluster sizes by utilizing a Wien filter and the clusters spatially separated based on their atomic sizes were simultaneously deposited on a SiO2/Si(100) substrate. Parallel-deposited Aun clusters (n = 6, 7, and 8) on...
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در ایران بیمه خودرو سهم بزرگی در صنعت بیمه دارد. تعیین حق بیمه مناسب و عادلانه نیازمند طبقه بندی خریداران بیمه نامه براساس خطرات احتمالی آنها است. عوامل ریسکی فراوانی می تواند بر این قیمت گذاری تاثیر بگذارد. طبقه بندی و تعیین میزان تاثیر گذاری هر عامل ریسکی بر قیمت گذاری بیمه خودرو پیچیدگی خاصی دارد. در این پایان نامه سعی در ارائه راهی جدید برای طبقه بندی عوامل ریسکی با استفاده از اصول و روش ها...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 2002
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1455135