کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1678120 1009930 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High current liquid metal ion source using porous tungsten multiemitters
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
High current liquid metal ion source using porous tungsten multiemitters
چکیده انگلیسی

We recently developed an indium Liquid-Metal-Ion-Source that can emit currents from sub-μA up to several mA. It is based on a porous tungsten crown structure with 28 individual emitters, which is manufactured using Micro-Powder Injection Molding (μPIM) and electrochemical etching. The emitter combines the advantages of internal capillary feeding with excellent emission properties due to micron-size tips. Significant progress was made on the homogeneity of the emission over its current–voltage characteristic as well as on investigating its long-term stability. This LMIS seems very suitable for space propulsion as well as for micro/nano manufacturing applications with greatly increased milling/drilling speeds. This paper summarizes the latest developments on our porous multiemitters with respect to manufacturing, emission properties and long-term testing.

Research highlights
► Ion source manufactured with Micro Powder Injection Molding.
► Milli-ampere indium Liquid Metal Ion Source.
► Long term operation at high currents.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 111, Issue 1, December 2010, Pages 1–4
نویسندگان
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