Resist Possibilities And Limitations In Ion Beam Lithography

Abstract
A broad range of materials and processing techniques amenable to producing resist systems for ion beam lithography are discussed. The effect of random fluctuations in exposure dose on feature size for a gaussian beam of constant shape is calculated. The results of Monte Carlo simulations of exposures of PMMA on silicon by 50 KeV H2+, 100 KeV and and 150 KeV Li+ ions are presented and it is shown that feature resolution is fundamentally limited by the physical processes through which energy is deposited.
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