hello friends, can anybody tell me how i can etch a thin film of tio2(100 angstrom). please, tell me easiest and econimical echant, like some chemical etchant. thanks ===== Ravneet Singh, Research Scholar, Microelectonics Lab Electrical Engineering Dept., IIT Madras, Chennai - 600 036. __________________________________ Do you Yahoo!? The New Yahoo! Shopping - with improved product search http://shopping.yahoo.com