激光诱导前向转移水中制备聚二甲基硅氧烷微粒

中国机械工程

激光诱导前向转移水中制备聚二甲基硅氧烷微粒

麦文豪;邓宇;郭钟宁;洪文生

广东工业大学机电工程学院，广州，510006

出版日期:2018-04-25 发布日期:2018-04-24
基金资助:
国家自然科学基金资助项目(51175091)；
广东省青年创新人才(自然)项目(2015KQNCX027)
National Natural Science Foundation of China（No. 51175091）

PDMS Particle Fabrications by Laser-induced Forward Transfer within Water

MAI Wenhao;DENG Yu;GUO Zhongning;HONG Wensheng

School of Mechanical and Electrical Engineering,Guangdong University of Technology,Guangzhou,510006

Online:2018-04-25 Published:2018-04-24
Supported by:
National Natural Science Foundation of China（No. 51175091）

摘要/Abstract

摘要： 聚二甲基硅氧烷（PDMS）的表面能低、黏度大，难以在空气中制备微型球粒。利用激光诱导前向转移技术在水中制备PDMS微粒，深入研究了激光能量、光斑直径对PDMS粒径的影响，发现微粒平均直径为20～100μm，并随光斑直径增大而增大，随激光能量增大而减小，且微球表面光滑。同时，利用高速摄像机对水中激光诱导前向转移工艺进行研究，结果表明，激光诱导钛层形成空化泡，溃灭时形成的射流将PDMS脱离形成微滴，固化后成为微球粒。

关键词: 激光诱导前向转移, 聚二甲基硅氧烷微粒, 高速摄像机, 空化射流

Abstract: PDWS was characterized with low surface energy and high viscosity, which made it difficult to form a sphere particles in air. PDMS particles were fabricated within water by laser-induced forward transfer processes. The effects of laser energy and spot sizes on mean diameters of PDMS particles were experimentally investigated, and it turned out that the spot size plays a positive role on enlarge the particles while the pulse energy influences it negatively, and the fabricated PDMS particles have diameter range of 20～100μm and great surface quality. With high speed camera, the particle formation processes were observed, and it resulted from a jet generated by laser induced thermal cavitation.

Key words: laser-induced forward transfer, Polydimethylsiloxane (PDMS) particle, high-speed camera, cavitating jet

中图分类号:

TN249

麦文豪;邓宇;郭钟宁;洪文生. 激光诱导前向转移水中制备聚二甲基硅氧烷微粒[J]. 中国机械工程.

MAI Wenhao;DENG Yu;GUO Zhongning;HONG Wensheng. PDMS Particle Fabrications by Laser-induced Forward Transfer within Water[J]. China Mechanical Engineering.

参考文献

[1]ZHAO L B, LI S Z, HU H, et al. A Novel Method for Generation of Amphiphilic PDMS Particles by Selective Modification[J]. Microfluidics and Nanofluidics, 2011, 10(2): 453-458.
[2]JIANG K, THOMAS P C, FORRY S P, et al. Microfluidic Synthesis of Monodisperse PDMS Microbeads as Discrete Oxygen Sensors[J]. Soft Matter, 2012, 8(4):923-926.
[3]BRAUDY R S. Laser Writing[J]. Proceedings of the IEEE, 1969, 57(10):1771-1772.
[4]PALLA-PAPAVLU A, DINCA V, PARAICO I, et al. Microfabrication of Polystyrene Microbead Arrays by Laser Induced Forward Transfer[J]. Journal of Applied Physics, 2010, 108(3):033111-033111-6.
[5]黄志刚, 李洪辉, 印四华,等. 激光诱导精密沉积铜箔实验[J]. 中国机械工程, 2016, 27(22):2990-2994.
HUANG Zhigang，LI Honghui，YIN Sihua，et al. Experimental on Laser Induced Precision Transfer of Cu Film[J]. China Mechanical Engineering, 2016, 27(22): 2990-2994.
[6]RAPP L, NNON S, ALLONCLE A P, et al. Multilayer Laser Printing for Organic Thin Film Transistors[J]. Applied Surface Science, 2011, 257(12):5152-5155.
[7]刘威, 窦广彬, 王春青,等. 高斯分布激光前向转印Cu薄膜形貌及机理[J]. 中国激光, 2013, 40(3):157-162.
LIU Wei，DOU Guangbin，WANG Chunqing，et al. Morphology and Mechanism of Gaussian Distributed Laser Induced Forward Transfer Cu Film[J]. Chinese Journal of Lasers, 2013, 40(3):157-162.
[8]陈继文. 基于激光诱导向前转移技术直写布线工艺研究[D]. 武汉：华中科技大学, 2011.
CHEN Jiwen. Study on Direct Writing Conductive Lines by Laser Induced Forward Transfer Technology[D]. Wuhan：Huazhong University of Science & Technology, 2011.
[9]杨丽. 飞秒激光微精细加工——微量物质转移研究[D]. 天津：天津大学, 2007.
YANG Li. Studies on Depositing of Metal Film by Femtosecond Laser Induce Forward Transfer[D]. Tianjin : Tianjin University, 2007.
[10]邓宇. 激光诱导单细胞传送技术及其机理研究[D]. 广州：广东工业大学, 2015.
DENG Yu. Research on Process and Mechanism of Laser Induced Single Cell Transfer[D]. Guangzhou：Guangdong University of Technology, 2015.