Somebody in the Silicon world does this commercially. If you contact SEMI I am sure you will get some help finding them. Bill Moffat -----Original Message----- From: dodankyu@hotmail.com [mailto:dodankyu@hotmail.com] Sent: Tuesday, April 30, 2002 4:55 AM To: mems-talk@memsnet.org Subject: [mems-talk] Particles of constant size (micro & submicro ) Hi.. Everyone.. I am looking for particles of constant size(micro & sub-micro) For example, diamond(330nm, 3um), alumina(330nm, 3um), aluminum(2um), slicon(2um)...If you know, send information to me.Any information would be of great help. Thanks. ------------------------------------------------------------------------ MSN FwEd?!<- ?)7/:P@G ;gAx@; 0#FmGO0T 0|8.GO<