Thermal diffusivity in femtosecond-laser-structured micro-volumes of polymers

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/72087

Title: Thermal diffusivity in femtosecond-laser-structured micro-volumes of polymers
Author(s): Morikawa, Junko; Orie, Akihiro; Hashimoto, Toshimasa; Juodkazis, Saulius
Abstract: Thermal diffusivity of laser micro-structured regions in plastics was determined using a temperature wave method with a lateral resolution reduced to ∼10 μm using an array of micro-sensors. A high volume fraction (>25%) of laser modified phase was recorded by tightly focused femtosecond-laser pulses inside films of poly-methylmethacrylate, non-oriented polyethylene, polystyrene, and polyimide-Kapton. Changes in thermal diffusivity inside the laser-structured volumes of the order of a few percent were reliably determined with the miniaturized sensors. The origin of the change of thermal properties in plastics is discussed.
Publication type: Journal article
Research centre: Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
Source: Applied Physics A: Materials Science and Processing, Vol. 98, no. 3 (Mar 2010), pp. 551-556
Publication year: 2010
Keyword(s): Femtosecond laser pulses; Plastics; Polymers; Thermal diffusivity
Publisher: Springer
ISSN: 0947-8396
Publisher URL: http://dx.doi.org/10.1007/s00339-009-5493-7
Peer reviewed