Alumina Coating of Ultrafine nanoporous Gold At Room Temperature and Their Optical Properties

Authors

Lihua Qian, University of Nevada, Las VegasFollow
Wen Shen, University of Nevada, Las VegasFollow
Biswajit Das, University of Nevada, Las VegasFollow
Bo Shen, Northeastern University, ShenyangFollow
Gaowu W. Qin, Northeastern University, ShenyangFollow

Document Type

Article

Publication Date

9-2009

Publication Title

Chemical Physics Letters

Volume

479

Issue

4-6

First page number:

259

Last page number:

263

Abstract

Amorphous alumina is deposited on chemically etched nanoporous gold films using atomic layer deposition at room temperature. Nanoporous gold with ultrafine pores of 7 nm in diameter is uniformly coated with alumina film as thin as 1.4 nm. Localized surface plasmon resonance of gold skeleton exhibits a detectable red-shift in the optical transmittance spectra, the magnitude of which depends on the thickness of the alumina layer. The tunable optical properties of nanoporous gold–alumina composites provide one possibility for implementing miniaturized optical devices with high performances.

Keywords

Gold films; Metallic films--Optical properties; Nanostructured materials; Thin films

Disciplines

Electrical and Computer Engineering | Electromagnetics and Photonics | Electronic Devices and Semiconductor Manufacturing | Nanoscience and Nanotechnology | Nanotechnology Fabrication | Semiconductor and Optical Materials

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Qian, L., Shen, W., Das, B., Shen, B., Qin, G. W. (2009). Alumina Coating of Ultrafine nanoporous Gold At Room Temperature and Their Optical Properties. Chemical Physics Letters, 479(4-6), 259-263.