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 |