Figure 2.

PSi is obtained by electrochemical anodization of highly conductive p-type Si wafers in HF:ethanol solutions (1:2). The nucleation of Co inside the matrix is achieved by electroinfiltration of Co in the porous matrix by a pulsed mode.

Muñoz-Noval et al. Nanoscale Research Letters 2012 7:495   doi:10.1186/1556-276X-7-495
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