Figure 1
From: Nanoparticles prepared from porous silicon nanowires for bio-imaging and sonodynamic therapy
SiNWs and SiNPs structural characterization. (a) Cross-sectional SEM image of SiNW arrays on c-Si (the inset shows the porous structure of the SiNW), (b) TEM image of single SiNW (the inset shows the electron diffraction pattern of the SiNW), (c) TEM image of SiNPs (the inset shows the electron diffraction pattern of the SiNPs), and (d) size distribution function of SiNPs, obtained by DLS (the inset shows the digital photo of the SiNPs aqueous suspension with the concentration of 1 mg/ml).