Demonstration of 12 nm resolution Fresnel zone plate lens based soft x-ray microscopy.
To extend soft x-ray microscopy to a resolution of order 10 nm or better, we developed a new nanofabrication process for Fresnel zone plate lenses. The new process, based on the double patterning technique, has enabled us to fabricate high quality gold zone plates with 12 nm outer zones. Testing of the zone plate with the full-field transmission x-ray microscope, XM-1, in Berkeley, showed that the lens clearly resolved 12 nm lines and spaces. This result represents a significant step towards 10 nm resolution and beyond.
Chao
Weilun
W
Center for X-ray Optics, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA. wlchao@lbl.gov
Kim
Jihoon
J
Rekawa
Senajith
S
Fischer
Peter
P
Anderson
Erik H
EH
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008853:Microscopy / Q000295:instrumentation*; D011856:Radiographic Image Enhancement / Q000295:instrumentation*; D011859:Radiography / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity