CST – Computer Simulation Technology

Title:
Flying plasmonic lens in the near field for high-speed nanolithography
Author(s):
WERAYUT SRITURAVANICH, LIANG PAN, YUAN WANG, CHENG SUN, DAVID B. BOGY, XIANG ZHANG
Source:
nature nanotechnology
Vol./Issue/Date:
Volume: 3, Oct. 2008
Year:
2008
Page(s):
733 - 737
Abstract:
The commercialization of nanoscale devices requires the development of high-throughput nanofabrication technologies that allow frequent design changes. Maskless nanolithography, including electron-beam and scanningprobe lithography, offers the desired flexibility but is limited by low throughput. Here, we report a new low-cost, highthroughput approach to maskless nanolithography that uses an array of plasmonic lenses that ‘flies’ above the surface to be patterned, concentrating short-wavelength surface plasmons into sub-100 nm spots. However, these nanoscale spots are only formed in the near field, which makes it very difficult to scan the array above the surface at high speed. To overcome this problem we have designed a self-spacing air bearing that can fly the array just 20 nm above a disk that is spinning at speeds of between 4 and 12 m s^-1, and have experimentally demonstrated patterning with a linewidth of 80 nm. This lowcost nanofabrication scheme has the potential to achieve throughputs that are two to five orders of magnitude higher than other maskless techniques.
Document:

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