(19)

(11)

EP 1 952 204 A1

(12)

(43) Date of publication: 06.08.2008 Bulletin 2008/32 (21) Application number: 05808603.4 (22) Date of filing: 06.10.2005

(51) International Patent Classification (IPC):  G03H 3/00(2006.01) (86) International application number: PCT/US2005/036194 (87) International publication number: WO 2007/044002 (19.04.2007 Gazette 2007/16)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (71) Applicant: Northwestern University Evanston, IL 60201-3135 (US)	(72) Inventors: SHEKHAWAT, Gajendra Arlington Heights, IL 60004 (US) DRAVID, Vinayak P. Glenview, IL 60025 (US) (74) Representative: Hitchcock, Esmond Antony  Marks & Clerk 90 Long Acre London WC2E 9RA London WC2E 9RA (GB)