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12 February 2008 Toward sub-10-nm resolution zone plates using the overlay nanofabrication processes
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Soft x-ray zone plate microscopy has proven to be a valuable imaging technique for nanoscale studies. It complements nano-analytic techniques such as electron and scanning probe microscopies. One of its key features is high spatial resolution. We developed an overlay nanofabrication process which allows zone plates of sub-20 nm zone widths to be fabricated. Zone plates of 15 nm outer zones were successfully realized using this process, and sub-15 nm resolution was achieved with these zone plates. We extend the overlay process to fabricating zone plates of 12 nm outer zones, which is expected to achieve 10 nm resolution. In addition, we have identified a pathway to realizing sub-10 nm resolution, high efficiency zone plates with tilted zones using the overlay process.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Weilun Chao, Erik H. Anderson, Peter Fischer, and Dong-Hyun Kim "Toward sub-10-nm resolution zone plates using the overlay nanofabrication processes", Proc. SPIE 6883, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics, 688309 (12 February 2008);


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