Extraordinary transmittance in three-dimensional crater, pyramid, and hole-array structures prepared through reversal imprinting of metal films

NCUIR > Research Center > Thin Film Technology Center > journal & Dissertation > Item 987654321/27734

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Title:	Extraordinary transmittance in three-dimensional crater, pyramid, and hole-array structures prepared through reversal imprinting of metal films
Authors:	Chen,HL;Chuang,SY;Lee,WH;Kuo,SS;Su,WF;Ku,SL;Chou,YF
Contributors:	薄膜技術中心
Keywords:	SURFACE-PLASMON RESONANCE;OPTICAL-TRANSMISSION;NANOSTRUCTURES;LIGHT
Date:	2009
Issue Date:	2010-06-29 19:15:58 (UTC+8)
Publisher:	中央大學
Abstract:	We used a reversal imprinting-in-metal (RIM) process to fabricate various three-dimensional (3D) metal structures under low pressure. Molds featuring different shapes were used to pattern various sub-wavelength metal structures, including pyramidal, hole-array, and craterlike structures. Refractive index matching and cavity effects both enhanced the degree of transmission of these structured metal films. The crater-like structure appears to be a promising material because of the unique properties imparted by the elongated and gradually tapering spacing of its cavities. From both near-field simulations and experimentally obtained optical spectra, we found that the cavity effect in the crater-like structure led to significantly enhanced transmission of the optical intensity. Thus, this RIM process allows the ready fabrication of various two-and three-dimensional metallic structures for use in surface plasmon-based devices. (C) 2009 Optical Society of America
Relation:	OPTICS EXPRESS
Appears in Collections:	[Thin Film Technology Center] journal & Dissertation

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