Does anybody know how to "cleave" ultra thin Si wafers? I need to cut, from ultra-thin (30 microns) Si wafers, substrates of ~ 10 x 20 mm. I tried to use different kind of diamonds, but I always have the same problem: the substrate is not more "flexible", if I try to bent it, it cracks in many parts. I suspect that I am generating defects during the cutting of the substrates that propagate during the bending. Any suggestion?. Thanks for the reply to my e-mail: broitman@andrew.cmu.edu E. Broitman ---------------------------------- Dr. Esteban Broitman Senior Research Associate Department of Chemical Engineering Carnegie Mellon University Pittsburgh, PA 15213 Phone: (412) 268-9537 FAX: (412) 268-7139 ----------------------------------