Laser micromachining and nickel plating of high-aspect-ratio structures in polymer molds

2001 ◽  
Author(s):  
Hengyi Jin ◽  
Muralihar K. Ghantasala ◽  
Jason P. Hayes ◽  
Karlo Jolic ◽  
Erol C. Harvey
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Laser Micromachining ◽  
Nickel Plating

scholarly journals Optimization of femtosecond laser cutting of biodegradable polymer for medical devices manufacturing

2016 ◽  
Vol 8 (4) ◽  
pp. 116 ◽  
Author(s):  
Bogusz Stepak ◽  
Arkadiusz J. Antonczak ◽  
Krzysztof M. Abramski
Keyword(s):  
Aspect Ratio ◽  
Femtosecond Laser ◽  
Medical Devices ◽  
Biodegradable Polymer ◽  
High Aspect Ratio ◽  
Laser Cutting ◽  
Laser Micromachining ◽  
Scanning Strategy ◽  
Vascular Stents ◽  
Femtosecond Laser Micromachining

This paper describes the experimental parameters involved in the femtosecond laser micromachining of biodegradable poly(L-lactide) which is frequently used in biomedical applications such as vascular stents or scaffolds. We investigated the influence of laser pulse energy, scanning strategy and number of overscans on the laser cutting throughput. The process parameters that enable reducing of a heat affected zone were determined. As a result, the optimal scanning strategy was determined in order to obtain high aspect ratio trenches in 380 ?m thick biodegradable polymer sheet. Full Text: PDF ReferencesW. Jia et al. "Effects of high-repetition-rate femtosecond laser micromachining on the physical and chemical properties of polylactide (PLA)", Opt. Express 23, 21 (2015). CrossRef F. Hendricks, R. Patel, and V.V. Matylistsky, "Micromachining of bio-absorbable stents with ultra-short pulse lasers", Proc. SPIE 9355, 935502 (2015). CrossRef W.Y. Yeong et al. "Annealing of Biodegradable Polymer Induced by Femtosecond Laser Micromachining", Adv. Eng. Mater. 4, 12 (2010). CrossRef K. Stolberg et al. "IR and green femtosecond laser machining of heat sensitive materials for medical devices at micrometer scale", Proc. SPIE 8968, 89680E (2014). CrossRef F. Hendricks et al. "High aspect ratio microstructuring of transparent dielectrics using femtosecond laser pulses: method for optimization of the machining throughput", Appl. Phys. A 117, 1 (2014). CrossRef A. Antonczak et al. "Degradation of poly(l-lactide) under CO2 laser treatment above the ablation threshold", Polym. Deg. Stab. 109, 97-105 (2014) CrossRef B. Stepak et al. "The influence of ArF excimer laser micromachining on physicochemical properties of bioresorbable poly(L-lactide)", Proc SPIE 9736, 97361T (2016). CrossRef

scholarly journals Trench Wiring Process Applying Electroless Nickel Plating for Fine and High-Aspect-Ratio Pattern

2019 ◽  
Vol 32 (3) ◽  
pp. 475-479
Author(s):  
Seigo Yokochi ◽  
Tetuya Yoshida ◽  
Kenichi Iwashita ◽  
Yoshito Tsukahara ◽  
Masashi Komatsu
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Electroless Nickel ◽  
Electroless Nickel Plating ◽  
Nickel Plating
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