1 / 2

Vacuum deposited silver Chemically deposited silver

iokina
Download Presentation

Vacuum deposited silver Chemically deposited silver

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. This project focuses on chemical deposition of poly-crystalline silver films on planar silica substrates, and characterization of the composite materials. In particular, we focus here on the room-temperature electronic transport properties of these materials, as to date no such studies have been reported. A modified Tollen’s reaction is utilized to deposit rough silver films with average thicknesses in the range of 80 – 300 nm.[1] Electron microprobe studies of the materials reveal extreme disorder and granularity, while resistance measurements result in typically high values. It was not possible to extract a useful measure of thickness necessary for characterizing the films’ resistivities. A new thickness parameter, defined as with tm the film’s measured mass thickness and f the filling fraction of metal in the film, is found to play the standard role of thickness, allowing the implementation of classical electron transport theory. a b Vacuum deposited silver Chemically deposited silver slope = -1.29 R(Ω) R(Ω) Scaling of resistance of chemically deposited films with renormalized thickness parameter. Electron Transport in Chemically Deposited Silver FilmsMiriam Deutsch, University of Oregon, DMR-0239273 [1] M.S.M.Peterson, J. Bouwman, A. Chen, and M. Deutsch, J. Colloid Inter. Sci. 306, 41 (2007)

  2. Metamaterial Optical Coatings for Broadband Asymmetric Mirrors Miriam Deutsch, University of Oregon DMR-0239273 Outreach: We have written a comprehensive computer program for calculating light scattering from metallodielectric spherical Bragg resonators utilizing a plane-wave multipole expansion. The code is available on our group website as a free download. See http://www.mo.uoregon.edu/resources.html Our research on broadband asymmetric mirrors has yielded one patent application, filed November 2006. Education: Five graduate students (Sarah Emmons, Charles Rhode, Lawrence Davis, Aiqing Chen and Keisuke Hasegawa) are currently working in the group. Sarah Emmons is a Chemistry graduate student. For three years she was the recipient of the NSF GK-12 fellowship. Charles Rhode is a Physics graduate student. He was an NSF IGERT fellow during the 2002-2003 academic year. Lawrence Davis, Aiqing Chen and Keisuke Hasegawa are Physics graduate students. Undergraduate and REU students also regularly participate in research in our group.

More Related