Hello fellow MEMS researchers, We would like to purchase a silicon deep trench etcher for our MEMS research work. We have evaluated a few suppliers namely, Alcatel, STS and Plasma Therm (still waiting to hear from Oxford Plasma out in the UK). It is difficult to conclude which machine is better as there are always trade offs between several factors (undercut, selectivity and etch rates). Anyone out there with any comments or suggestions, especially people who have purchased the deep trench etchers? Thanks in advance. Regards Yan ________________________________________________________________________ Yan Loke Institute of Microelectronics e-mail : yloke@ime.org.sg 10 Science Park Road Phone : (65) 870-0128 The Alpha #02-19/26 Fax : (65) 777-0670 Singapore 117684