Femtosecond-laser direct writing in polymers and potential applications in microfluidics and memory devices

Lakshmi Narayana Deepak Kallepalli; Venugopal Rao Soma; Narayana Rao Desai

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Femtosecond-laser direct writing in polymers and potential applications in microfluidics and memory devices

机译：Femtosecond-laser direct writing in polymers and potential applications in microfluidics and memory devices

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We have investigated femtosecond-laser-induced microstructures (on the surface and within the bulk), gratings, and craters in four different polymers: polymethyl methacrylate, polydimethylsiloxane, polystyrene, and polyvinyl alochol. The structures were achieved using a Ti:sapphire laser delivering 100-fs pulses at 800 nm with a repetition rate of 1 kHz and a maximum pulse energy of 1 mJ. Local chemical modifications leading to the formation of optical centers and peroxide radicals were studied using ultraviolet-visible absorption and emission, confocal micro-Raman and electron spin resonance spectroscopic techniques. Potential applications of these structures in microfluidics, waveguides, and memory-based devices are demonstrated.

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来源
《Optical Engineering》 |2012年第7期|073402-1-073402-6|共6页
作者
Lakshmi Narayana Deepak Kallepalli; Venugopal Rao Soma; Narayana Rao Desai;
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作者单位

CNRS-Aix-Marseille University, Laboratoire LP3, Parc Scientifique et Technologique de Luminy, 163 Avenue de Luminy, FR-13288, Marseille cedex 9, France;

University of Hyderabad, Advanced Center of Research in High Energy Materials, Prof. C.R. Rao Road, Hyderabad 500046, India;

University of Hyderabad, School of Physics, Prof. C.R. Rao Road, Hyderabad 500046, India;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
laser direct writing; diffraction grating; electron spin resonance; free radicals; waveguide;

Femtosecond-laser direct writing in polymers and potential applications in microfluidics and memory devices

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