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171.
Silver coating gold nanorods reduces the ensemble plasmon line width by changing the relation connecting particle shape and plasmon resonance wavelength. This change, we term "plasmonic focusing", leads to less variation of resonance wavelengths for the same particle size distribution. We also find smaller single particle linewidth comparing resonances at the same wavelength but show that this does not contribute to the ensemble linewidth narrowing. 相似文献
172.
Inga Powilleit 《中国建筑装饰装修》2012,(1):26-27
<正>UNStudio工作室创始人兼首席建筑师哈佛大学研究生院"丹下健三"荣誉讲席教授Co-Founder/Principal Architect UNStudio Kenzo Tange Chair at Harvard University Graduate School of Design 相似文献
173.
Petr Dementyev Neita Khayya David Zanders Inga Ennen Anjana Devi Eric I. Altman 《Small (Weinheim an der Bergstrasse, Germany)》2023,19(9):2205602
2D membranes such as artificially perforated graphene are deemed to bring great advantages for molecular separation. However, there is a lack of structure-property correlations in graphene membranes as neither the atomic configurations nor the number of introduced sub-nanometer defects are known precisely. Recently, bilayer silica has emerged as an inherent 2D membrane with an unprecedentedly high areal density of well-defined pores. Mass transfer experiments with free-standing SiO2 bilayers demonstrated a strong preference for condensable fluids over inert species, and the measured membrane selectivity revealed a key role of intermolecular forces in ångstrom-scale openings. In this study, vapor permeation measurements are combined with quantitative adsorption experiments and density functional theory (DFT) calculations to get insights into the mechanism of surface-mediated transport in vitreous 2D silicon dioxide. The membranes are shown to exhibit molecular sieving performance when exposed to vaporous methanol, ethanol, isopropanol, and tert-butanol. The results are normalized to the coverage of physisorbed molecules and agree well with the calculated energy barriers. 相似文献