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Functional Metallic Microcomponents via Liquid-Phase Multiphoton Direct Laser Writing: A Review

Physics Department and Research Center OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
Graduate School Materials Science in Mainz, Erwin-Schroedinger-Str. 46, 67663 Kaiserslautern, Germany
Fraunhofer Institute for Industrial Mathematics, 67663 Kaiserslautern, Germany
Author to whom correspondence should be addressed.
Micromachines 2019, 10(12), 827;
Received: 31 October 2019 / Revised: 21 November 2019 / Accepted: 25 November 2019 / Published: 28 November 2019
(This article belongs to the Special Issue Multi-Dimensional Direct-Write Nanofabrication )
We present an overview of functional metallic microstructures fabricated via direct laser writing out of the liquid phase. Metallic microstructures often are key components in diverse applications such as, e.g., microelectromechanical systems (MEMS). Since the metallic component’s functionality mostly depends on other components, a technology that enables on-chip fabrication of these metal structures is highly desirable. Direct laser writing via multiphoton absorption is such a fabrication method. In the past, it has mostly been used to fabricate multidimensional polymeric structures. However, during the last few years different groups have put effort into the development of novel photosensitive materials that enable fabrication of metallic—especially gold and silver—microstructures. The results of these efforts are summarized in this review and show that direct laser fabrication of metallic microstructures has reached the level of applicability. View Full-Text
Keywords: direct laser writing; additive manufacturing; metallic microstructures direct laser writing; additive manufacturing; metallic microstructures
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Waller, E.H.; Dix, S.; Gutsche, J.; Widera, A.; von Freymann, G. Functional Metallic Microcomponents via Liquid-Phase Multiphoton Direct Laser Writing: A Review. Micromachines 2019, 10, 827.

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