Dear Group, How can I measure the surface of "Black Silicon" It is made by a SF6/CF4 process with a ICP etcher. The "Black Silicon" is formed by spikes (250nm thick and 5µm high) Yours sincerely Jens Tuchscheerer -- Jens Tuchscheerer CLONDIAG chip technologies GmbH Loebstedterstr. 103-105 07749 Jena Tel.: +49 3641 59470 Fax.: +49 3641 594720 Mail: jens@clondiag.com Web: www.clondiag.com begin:vcard fn:Jens Tuchscheerer n:Tuchscheerer;Jens org:CLONDIAG chip technologies GmbH adr;quoted-printable;quoted-printable:;;L=C3=B6bstedterstr. 103-105;Jena;Th=C3=BCringen;07749;Germany email;internet:jens@clondiag.com tel;work:+49-3641-494725 tel;fax:+49-3641-494720 x-mozilla-html:TRUE url:http://www.clondiag.com version:2.1 end:vcard