1.
Opt Lett
; 21(23): 1951-3, 1996 Dec 01.
Article
in English
| MEDLINE
| ID: mdl-19881856
ABSTRACT
We have developed a method for encoding phase and amplitude in microscopic computer-generated holograms (microtags) for security applications. An 8 x 8 cell phase-only and an 8 x 8 cell phase-and-amplitude microtag design has been exposed in photoresist by the extreme-ultraviolet (13.4-nm) lithography tool developed at Sandia National Laboratories. Each microtag measures 80 microm x 160 microm and contains features that are 0.2 microm wide. Fraunhofer zone diffraction patterns can be obtained from fabricated microtags without any intervening optics and compare favorably with predicted diffraction patterns.
2.
Diabetes
; 20(5): 282-5, 1971 May.
Article
in English
| MEDLINE
| ID: mdl-4397227