Opto-Electronic Engineering, Volume. 50, Issue 3, 220326(2023)
Research and application advances of photo-responsive droplet manipulation functional surface
Fig. 1. Development of photo-responsive droplet manipulation functional surface
Fig. 2. Schematic of droplet transportation by wetting gradient force[41]. (a) Contact angle of equilibrium droplet; (b) Gradient force upon droplet induced by photo-thermal effect; (c) Stress analysis of droplet transportation
Fig. 3. Mechanism of droplet manipulation on photo-thermal paraffin phase-change ultra-slippery surface[45]. (a) Stress analysis of droplet sliding; (b) Sliding of droplets in different paraffin phase
Fig. 4. Photo-thermal bouncing of droplet on a cavity trap-assisted superhydrophobic surface[48]
Fig. 5. Mechanism of wettability conversion in the photo-thermal shape-memory polymer functional surface[40]
Fig. 6. Schematic of droplet manipulation on photo-pyroelectric functional surface[39]. (a) Generation of dielectric electrophoresis force; (b) Manipulation process
Fig. 7. Mechanism of droplet manipulation on photo-voltaic functional surface[51]. (a) Sketch of the donor and acceptor levels of iron impurities and electron transport; (b) Schematic of directional photoexcitation of an Fe2+ impurity in the lithium niobate crystal, schematic of photo-voltaic electric field lines near the surface for (c) an x-cut crystal and (d) a z-cut crystal
Fig. 8. Electric wettability translation modulated by photo-pyroelectric effect[53]
Fig. 11. Reverse moulding of photo-thermal layer micro-nano functional structure with AAO[41]
Fig. 13. Structure and operation of photo-electric droplet manipulation surfaces which are categorized as the (a) photo-pyroelectric dielectric electrophoresis force[39], (b) photo-voltaic dielectric electrophoresis force[51], (c) photo-pyroelectric wettability[53], and (d) photo-conductive electric wettability[61]
Fig. 14. Image of micro-nano structures on superhydrophobic surface[39]
Fig. 15. Basic functional units of photo-conductive electric wettability surface[61]
Fig. 17. Droplet merging and splitting with light[39]. (a) Merging of droplets; (b) Splitting of droplet; (c) Dispensing of droplet
Fig. 19. Manipulate a droplet to move a cargo, go through a tunnel, and clean the stains[70]
Fig. 20. Motion of liquid metal “vehicle robot” in liquid condition with light manipulation [71]
Fig. 21. Photo-responsive LMs "engine"[72]. (a) Motion of plastic boat with laser pumped “engine”; (b) Nonlinear movement of two-engine plastic boat pumped by sunlight
Fig. 22. Cell culture chip based on photo-responsive droplet manipulation functional surface[38]
Fig. 23. Photo-responsive micro-fluidic biological chip[76]. (a) Construction and operation of fluidic chip; (b) Thrombin culture and monitor experiment; (c) Cell in situ stimulation and detection experiment
Fig. 24. Photo-responsive droplet fusion and reaction control of chemical reagents[62]
Fig. 25. Photo-responsive automatic sampling chemical reaction chip[45]. (a) Photograph of the chip; (b)~(h) Automatic liquid feeding process based on optical response
Fig. 26. Photo-responsive functional surface for CdS nanocrystal chemical synthesis[81]. (a) Schematic diagram of droplet manipulation;(b) Physical diagram and transmission electron microscopy image of CdS nanocrystals; (c) Parallel detection of multi samples
Fig. 27. Under-water bubble manipulation based on photo-responsive droplet manipulation functional surface[82]
Fig. 28. Microparts assembly by controllable bubbles based on photo-thermal functional surface[83]
Fig. 29. Light navigated bubble bouncing within water based on thermally conductive surface[84]
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Chen Zhang, Tong Wen, Zezhi Liu, Wenping Gao, Xinkong Wang, Ziyu Li, Cuifang Kuang, Kaige Wang, Jintao Bai. Research and application advances of photo-responsive droplet manipulation functional surface[J]. Opto-Electronic Engineering, 2023, 50(3): 220326
Category: Article
Received: Dec. 2, 2022
Accepted: Feb. 10, 2023
Published Online: May. 4, 2023
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