Laser Micromachining for the Nucleation Control of Nickel Microtextures for IR Emission.

IF 3 3区 工程技术 Q2 CHEMISTRY, ANALYTICAL
Micromachines Pub Date : 2025-06-11 DOI:10.3390/mi16060696
Tatsuhiko Aizawa, Hiroki Nakata, Takeshi Nasu
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引用次数: 0

Abstract

Femtosecond laser micromachining was utilized to build up a micro-through-hole array into a sacrificial film, which was coated onto a copper specimen. This micro-through hole was shaped in the paraboloidal profile, with its micro-dimple on the interface between the copper substrate and the film. This profile was simply in correspondence with the laser energy profile. The array was used as a nucleation and growth site for nickel cluster deposition during wet plating. The micro-pillared unit cells nucleated at the micro-dimple and grew on the inside of the micro-through hole. After removing the sacrificial film, cleansing, and polishing, the nickel micro-pillar array was obtained, standing on the copper substrate. These unit cells and their alignments were measured through scanning electron microscopy and laser microscopy. Thermographic microscopy with FT-IR was utilized to measure the IR emittance as a function of wavelength. The focused areas were varied by controlling the aperture to analyze the effects of arrayed microtextures on the IR emittance.

激光微加工对镍微织构成核的红外发射控制。
利用飞秒激光微加工技术将微通孔阵列构建成牺牲膜,并将牺牲膜涂覆在铜试样上。该微通孔呈抛物面形,在铜衬底与薄膜的界面处有微凹陷。这个剖面与激光能量剖面完全一致。该阵列被用作湿镀过程中镍簇沉积的成核和生长位点。微柱状细胞在微凹处成核,生长在微通孔内部。去除牺牲膜,清洗,抛光,得到镍微柱阵列,立在铜基板上。通过扫描电子显微镜和激光显微镜测量了这些单位细胞及其排列。利用红外热成像显微镜测量红外发射度随波长的变化。通过控制孔径来改变聚焦区域,分析阵列微纹理对红外发射度的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Micromachines
Micromachines NANOSCIENCE & NANOTECHNOLOGY-INSTRUMENTS & INSTRUMENTATION
CiteScore
5.20
自引率
14.70%
发文量
1862
审稿时长
16.31 days
期刊介绍: Micromachines (ISSN 2072-666X) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to micro-scaled machines and micromachinery. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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