Optical characteristics of pore size on porous anodic aluminium oxide films with embedded silver nanoparticles

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Title:	Optical characteristics of pore size on porous anodic aluminium oxide films with embedded silver nanoparticles
Authors:	黃貞翰;Huang, Chen-Han;Lin, Hsing-Ying;Tzeng, Yonhua;Fan, Chien-Hsiang;Liu, Chih-Yi;Li, Chia-Yi;Huang, Cheng-Wen;Chen, Nan-Kuang;Chui, Hsiang-Chen
Contributors:	生醫理工學院生醫科學與工程學系
Keywords:	absorption;Aluminum oxide;Anodic aluminum oxide;electrical conductivity;electrochemistry;Nanoparticles;nanosilver;Nanostructure;Photo conductivity;Plasmonics;Porosity;Sensor;Sensors;Silver;spatial distribution;Surface plamasonic resonator;Wavelengths
Date:	2012-06-01
Issue Date:	2026-04-23 11:18:24 (UTC+8)
Publisher:	Elsevier;Elsevier B.V
Abstract:	摘要： Dielectric porous anodic aluminum oxide films embedded with two-dimensional silver nanoparticles arrays (porous Ag/AAO) have been fabricated by electrochemical anodization and deposition, wherein the position and rate of the Ag nanoparticles within the nanopores can be properly controlled. These porous Ag/AAO films have photo-induced plasmonic coupling and can be applied toward photo-absorption sensors. The plasmonic absorption is clearly visible and its absorption maximum red-shifts with increasing particle diameters. An investigation of how the absorption spectrum is influenced by systematically changing the pore diameter and inter-pore spacing is laid out. This work provides an approach to precisely tune the peak wavelength and the bandwidth of plasmonic absorption of porous Ag/AAO films utilizing fine control of the pore diameters. The wavelength shift slope of absorption peak with the pore diameter is measured to be approximately 0.82nm/nm (peak wavelength/pore diameter). These tuning curves may be useful in the design of photon-response sensors and 2D tunable plasmonic-based nanostructure is expected to enable applications such as tunable photon-induced electrical conductivity. 出版者： Elsevier B.V 出版日期： 2012-06 出處： Sensors and actuators. A. Physical., 2012-06, Vol.180, p.49-54 版權： 2012 Elsevier B.V. 識別號： ISSN: 0924-4247 識別號： EISSN: 1873-3069 識別號： DOI: 10.1016/j.sna.2012.04.001
Appears in Collections:	[Department of Biomedical Sciences and Engineering ] journal & Dissertation

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