Ram Nanotech (RNT) leverages the unique properties of silicon to overcome the limitations of technologies in various industries such as life sciences, energy storage, and environmental remediation. We offer a variety of porous silicon products and we work with you to select the appropriate performance metrics based on the final product’s requirements. Etching can be performed either to leave a solid core or such that the particles are completely porosified. Powder particles can have a mean size between 1 and 75 µm and still be etched completely through the core. Larger particles can also be etched but will generally have a solid core. The mean pore size can be varied over the range of roughly 3 nm to 20 nm. Hierarchical pore size distributions can also be produced, for example, combinations of 3–5 nm pores with larger mesopores in the 10–20 nm range or with macropores larger than 50 nm. Porosity can be varied up to approximately 50% and specific surface areas of 50–450 cm3/g are available.