Hydrophobic templates with rough patterns fabricated by laser micromachining for liquid droplets generation

Shih Feng Tseng, Kuo Cheng Huang, Donyau Chiang, Ming-Fei Chen, Sheng Yi Hsiao, Yung Sheng Lin, Chang Pin Chou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents an approach to utilize high precision pulsed Nd:YAG laser to fabricate a rough array-pattern on a soda-lime glass plate by a laser-induced backside writing (LIBW) process, and a laser-induced plasma assisted ablation (LIPAA) technique. The current study investigates the effect of process parameters such as single-shot laser exposure time and number of passes on the material removal rate. After depositing 695 nm thick Teflon thin film on the glass plate, the surface of the laser micro-machined template becomes hydrophobic. The surface roughness, annular groove profile and surface micrograph were measured by an atomic force microscope, a profilometer, and a scanning electron microscope, respectively. A uniform liquid droplet by the sessile drop method is generated on the hydrophobic template. Droplet characteristics, such as contacted angle, size, and shape, are measured with a surface tension analyzer and microscope. This work also discusses the relationship between the formed droplets and the process recipe of the micro-machined template. The proposed approach can apply to future for uniform lens array formation.

Original languageEnglish
Title of host publicationAdvances in Materials and Processing Technologies II, AMPT 2009
Pages1234-1239
Number of pages6
DOIs
Publication statusPublished - 2011 Aug 8
EventInternational Conference on Advances in Materials and Processing Technologies, AMPT 2009 - , Malaysia
Duration: 2009 Oct 262009 Oct 29

Publication series

NameAdvanced Materials Research
Volume264-265
ISSN (Print)1022-6680

Other

OtherInternational Conference on Advances in Materials and Processing Technologies, AMPT 2009
CountryMalaysia
Period09-10-2609-10-29

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Tseng, S. F., Huang, K. C., Chiang, D., Chen, M-F., Hsiao, S. Y., Lin, Y. S., & Chou, C. P. (2011). Hydrophobic templates with rough patterns fabricated by laser micromachining for liquid droplets generation. In Advances in Materials and Processing Technologies II, AMPT 2009 (pp. 1234-1239). (Advanced Materials Research; Vol. 264-265). https://doi.org/10.4028/www.scientific.net/AMR.264-265.1234