Experimental evaluation of arrayed microcolumn lithography
2000
Arrays of miniature electron-beam (e-beam) columns (microcolumns) show promise for high-performance e-beam lithography in the 70 nm and below generations for both maskmaking and direct-write applications. In addition to their demonstrated high resolution, high-throughput operation is obtainable with parallel operation of microcolumns (one or more per chip) and a continuously moving stage. Proof-of-concept arrayed microcolumn operation has been demonstrated. Preliminary 1 keV lithography experiments were conducted using new, first-generation microcolumns with micromachined blankers and a raster-scan multichannel pattern generator. Complex patterns have been generated and written in PMMA with resolution <75 nm.
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