Los Angeles-based NanoH2O, the UCLA spinout developing reverse osmosis membranes used for purifying water, said today that it has named John Markovich as the firm's Chief Financial Officer. Markovich was most recently CFO of publicly held EMCORE Corporation. NanoH2O is headed by Jeff Green, who was co-founder of Archive Inc. and Stamps.com, and is venture backed by Khosla Ventures, Oak Investment Partners, and Rusheen Capital Partners.