Nickel Displacement Deposition of Porous Silicon with Ultrahigh Aspect Ratio Xu, Chengkun ; Zhang, Xi ; Tu, King-Ning ; Xie, Yahong Abstract Publication: Journal of the Electrochemical Society Pub Date: March 2007 DOI: 10.1149/1.2430690 Bibcode: 2007JElS..154D.170X