標題: A combined electrochemical route to fabricate large-area and free-standing inverse opaline film
作者: Liao, Chen-Hong
Hung, Pei-Sung
Wu, Cheng-Yeou
Chen, Hsin-Yi
Wu, Pu-Wei
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Colloidal crystals;Inverse opals;Electrophoresis;Electrodeposition;Nickel
公開日期: 七月-2016
摘要: A combined electrochemical route involving electrophoresis and electrodeposition is developed to fabricate a large-area unsupported nickel inverse opaline film with thickness less than 10 pm. A vertical electrophoresis allows for the packing of 495 nm polystyrene microspheres on an ITO-coated glass to form a colloidal crystal with significantly reduced defects. Subsequently, a nickel electrodeposition is employed to fill the interstitial voids among the close-packed polystyrene microspheres, followed by the removal of the colloidal template in a two-stage process, leaving a robust nickel skeleton with hexagonally arranged pores and interconnected pore channels. This nickel skeleton is then detached from the ITO-coated glass via a liquid nitrogen treatment, rendering a free-standing nickel inverse opaline film in 2 x 2 cm(2). Porometer measurements indicate a narrow pore size distribution consistent with images from scanning electron microscope. We determine that the intensity ratio of (111)/(100) diffraction peak is an indicator for the strength of the Ni inverse opals, and thus affects its structural integrity upon detachment from the ITO-coated glass. (C) 2016 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.elecom.2016.04.009
http://hdl.handle.net/11536/133885
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2016.04.009
期刊: ELECTROCHEMISTRY COMMUNICATIONS
Volume: 68
起始頁: 32
結束頁: 35
顯示於類別:期刊論文