Polymeric MembranesHome / Neural Engineering Laboratory Research Projects / Polymeric Membranes News Hamid Charkhkar defended his PhD in June 2015. Read about his success and future plans here! Franz Hamilton was graduated in May 2015 with his PhD. Read about his success and future plans here! Etching of silicon, polymers, glass… can make membranes! We have worked with several different materials, etched wet and dry, to form filters, membranes, substrates. Here are some examples.