**A femtosecondโpulsed Ti:sapphire laser** is used to generate surface features in slabs of poly(dimethylsiloxane) with minimum dimensions of 1 ฮผmโsmaller than those available by rapidโprototyping techniques using transparency masks. The fabrication of magnetic field concentrators and the addition o
Annealing of Biodegradable Polymer Induced by Femtosecond Laser Micromachining
โ Scribed by Wai Yee Yeong; Kee Pah Lim; Gary Ka Lai Ng; Lay Poh Tan; Freddy Yin Chiang Boey; Subbu S. Venkatraman
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 544 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1438-1656
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โฆ Synopsis
Abstract
Femtosecond laser is a potential tool for net shape processing of biodegradable polymers. However, laser processing of polymeric material is still a challenge and the effects induced by laser ablation needs to be investigated. Poly(ฮตโcaprolactone) was micromachined at high fluence and the heat affected zone was characterized. Two different phases of microstructure, namely the annealed spherulite zone and the amorphous zone, are found.
๐ SIMILAR VOLUMES
Shape transformation of silver nanoprisms in aqueous solution was studied using femtosecond laser pulses. Irradiation of a pulsed Ti:Sapphire laser at 800 nm caused the shape change of the nanoprisms from triangle into sphere, forming a stable colloid of a narrow size distribution with the particle