Alumina coating of ultrafine nanoporous gold at room temperature and their optical properties

作者：Qian Lihua; Shen Wen; Das Biswajit^*; Shen Bo; Qin Gaowu W

来源：Chemical Physics Letters, 2009, 479(4-6): 259-263.

DOI：10.1016/j.cplett.2009.08.031

Amorphous alumina is deposited on chemically etched nanoporous gold films using atomic layer deposition at room temperature. Nanoporous gold with ultra. ne 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.

• 出版日期2009-9-17
• 单位东北大学