Figure 11From: Nanostructures formed by displacement of porous silicon with copper: from nanoparticles to porous membranesSERS spectra. (a) SERS spectrum of 10−6 M CuTMpyP4 adsorbed on the top side of porous copper membrane. (b, c) Raman spectra of 10−6 M CuTMpyP4 deposited from water and solution on bottom side of Cu membrane and porous silicon substrate, respectively. Laser plasma bands are marked by asterisks. Excitation wavelength was 441.6 nm.Back to article page