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The ocused Ion Beam Etching Characteristic of Au  

Park, J.J. (서울산업대학교 나노생산기술연구소)
Kim, S.D. (서울산업대학교 기계설계자동화공학부)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.16, no.5, 2007 , pp. 129-133 More about this Journal
Abstract
Focused Ion Beam(FIB) systems is a useful tool for the fabrication of micro-nano scale structures. In this study, the effects of FIB etching on the Au microstructure are systematically investigated. As the fabrication parameters, ion dose, dwell time and beam overlap ratio are studied. First, the increases of Ga ion dose makes the milling yield higher and the sidewall of milling profile steeper. Dwell time is found to have little effects on the milling profile due to the relatively large milling area of $1\times1{\mu}m^2$ used in this study. However, beam overlap significantly affects not only milling rate but also milling profile. As the beam overlap ratio changes from positive to negative, the development of regular cross-stripe patterns at the bottom with low milling rate is observed.
Keywords
Micro-nano fabrication technique; FIB; Lithography; Milling; Au; Milling yield; Dwell Time; OverLap;
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