Transistors...

Hi Transistors today are made with various steps of masking, etching, diffusing and depositing. Most all the steps could be done at home with reasonable chemistry except the photo graphic masking. There is an alternate method for doing the masking and also the etching. For small runs, we used an electron microscope to expose the mask material but even that only removes the photo masking step. One still needs to deal with the etching. There is a method of combining the masking and etching. One can use a FIB machine. These are similar to an electron microscope but use ions instead of electron. Diffusion steps can be done at home. I recall doing this for home made solar cells, with one of those Bell Tel. kits, when I was a kid. Dwight _________________________________________________________________ Rediscover Hotmail?: Now available on your iPhone or BlackBerry http://windowslive.com/RediscoverHotmail?ocid=TXT_TAGLM_WL_HM_Rediscover_Mo…