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Title: Hybrid laser precision engineering of transparent hard materials: challenges, solutions and applications
Authors: Liu, Huagang 
Lin, Wenxiong
Hong, Minghui 
Issue Date: 5-Aug-2021
Publisher: Springer Nature
Citation: Liu, Huagang, Lin, Wenxiong, Hong, Minghui (2021-08-05). Hybrid laser precision engineering of transparent hard materials: challenges, solutions and applications. Light: Science and Applications 10 (1) : 162. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Laser has been demonstrated to be a mature and versatile tool that presents great flexibility and applicability for the precision engineering of a wide range of materials over other established micromachining techniques. Past decades have witnessed its rapid development and extensive applications ranging from scientific researches to industrial manufacturing. Transparent hard materials remain several major technical challenges for conventional laser processing techniques due to their high hardness, great brittleness, and low optical absorption. A variety of hybrid laser processing technologies, such as laser-induced plasma-assisted ablation, laser-induced backside wet etching, and etching assisted laser micromachining, have been developed to overcome these barriers by introducing additional medium assistance or combining different process steps. This article reviews the basic principles and characteristics of these hybrid technologies. How these technologies are used to precisely process transparent hard materials and their recent advancements are introduced. These hybrid technologies show remarkable benefits in terms of efficiency, accuracy, and quality for the fabrication of microstructures and functional devices on the surface of or inside the transparent hard substrates, thus enabling widespread applications in the fields of microelectronics, bio-medicine, photonics, and microfluidics. A summary and outlook of the hybrid laser technologies are also highlighted. © 2021, The Author(s).
Source Title: Light: Science and Applications
ISSN: 2095-5545
DOI: 10.1038/s41377-021-00596-5
Rights: Attribution 4.0 International
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