TY - GEN
T1 - Towards microfluidic-based optical encryption using superhydrophobic surfaces created by femtosecond laser ablation
AU - Zheng, Jianchen
AU - Yu, Haibo
AU - Wen, Yangdong
AU - Zhao, Wenxiu
AU - Luo, Hao
AU - Liu, Lianqing
AU - Li, Wen Jung
PY - 2021
Y1 - 2021
N2 - Although superhydrophobic surfaces have been extensively studied in the past, few studies have achieved optical encryption through the manipulation of droplets combined with the surface superhydrophobic properties. We present here our work in using femtosecond laser ablation to create micro-/nano-structures on polydimethylsiloxane (PDMS) substrate surfaces, enabling them to become superhydrophobic. Directional transport tracks to steer droplet motions were designed on the processed PDMS surface utilizing a high-contrast difference in surface wettability; self-cleaning property using the droplets was also verified on the substrate surface. Moreover, using a surface with designed high-contrast regions to trap droplets, magnetic-assisted manipulation of nanoparticles enabled in-situ reversible optical imaging/encryption. Our simple method for creating high-contrast surface wettability regions holds great potential for fostering a wide range of innovative applications such as droplet-based microfluidics as well as new optical encryption devices.
AB - Although superhydrophobic surfaces have been extensively studied in the past, few studies have achieved optical encryption through the manipulation of droplets combined with the surface superhydrophobic properties. We present here our work in using femtosecond laser ablation to create micro-/nano-structures on polydimethylsiloxane (PDMS) substrate surfaces, enabling them to become superhydrophobic. Directional transport tracks to steer droplet motions were designed on the processed PDMS surface utilizing a high-contrast difference in surface wettability; self-cleaning property using the droplets was also verified on the substrate surface. Moreover, using a surface with designed high-contrast regions to trap droplets, magnetic-assisted manipulation of nanoparticles enabled in-situ reversible optical imaging/encryption. Our simple method for creating high-contrast surface wettability regions holds great potential for fostering a wide range of innovative applications such as droplet-based microfluidics as well as new optical encryption devices.
UR - https://www.scopus.com/pages/publications/85119366273
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85119366273&origin=recordpage
U2 - 10.1109/CYBER53097.2021.9588271
DO - 10.1109/CYBER53097.2021.9588271
M3 - RGC 32 - Refereed conference paper (with host publication)
T3 - IEEE Annual International Conference on CYBER Technology in Automation, Control, and Intelligent Systems, CYBER
SP - 116
EP - 121
BT - Proceedings of 11th IEEE International Conference on CYBER Technology in Automation, Control, and Intelligent Systems
PB - IEEE
T2 - 11th IEEE International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (IEEE-CYBER 2021)
Y2 - 27 July 2021 through 31 July 2021
ER -