Electrochemical and galvanic fabrication of a magnetoelectric composite sensor based on InP
Institute for Materials Science, Christian-Albrechts-University of Kiel, Kaiserstrasse 2, Germany
Nanoscale Research Letters 2012, 7:379 doi:10.1186/1556-276X-7-379Published: 9 July 2012
A process chain for a magnetoelectric device based on porous InP will be presented using only chemical, electrochemical, photoelectrochemical, photochemical treatments and the galvanic deposition of metals in high-aspect-ratio structures. All relevant process steps starting with the formation of a self-ordered array of current-line oriented pores followed by the membrane fabrication and a post-etching step, as well as the galvanic metal filling of membrane structures are presented and discussed. The resistivity of a porous InP structure could be drastically increased and, thus, the piezoelectric performance of the porous InP structure. The developed galvanic Ni filling process is capable to homogeneously fill high aspect-ratio membranes.