期刊
NANOSCALE
卷 3, 期 7, 页码 2709-2717出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1nr10026b
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资金
- Kentucky Science and Engineering Foundation [KSEF-148-502-08-240]
- Defense Advanced Research Projects Agency (DARPA) [N66001-09-1-2099]
Focused electron-beam-induced deposition using bulk liquid precursors (LP-EBID) is a new nanofabrication technique developed in the last two years as an alternative to conventional EBID, which utilizes cumbersome gaseous precursors. Furthermore, LP-EBID using dilute aqueous precursors has been demonstrated to yield platinum (Pt) nanostructures with as-deposited metal content that is substantially higher than the purity achieved by EBID with currently available gaseous precursors. This advantage of LP-EBID-along with the ease of use, low cost, and relative innocuousness of the liquid precursors-holds promise for its practical applicability in areas such as rapid device prototyping and lithographic mask repair. One of the feasibility benchmarks for the LP-EBID method is the ability to deposit high-fidelity nanostructures on various substrate materials. In this study, we report the first observations of performing LP-EBID on bare and metal-coated silicon-nitride membranes, and compare the resulting Pt deposits to those obtained by LP-EBID on polyimide membranes in terms of nucleation, morphology, size dependence on electron dose, and purity.
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