Research On Femtosecond Laser Fabrication For Intelligent Responsive Slippery Surface And Their Application

Due to the Unique performance of liquid repellency,self-healing and low hysteresis.The research of the bionic slippery surface has become a hotspot in the field of anti-icing,microfluidics and anti-biofouling.However,the the traditional surface are only serving for one single functionality and mostly depends on one materials.Therefore,it is particularly important to develop intelligent,portable and integrated new composite bionic devices,developing new fabrication technology for multi-material functional surface,revealing the mechanism of femtosecond laser processing new composite materials and expand the application of intelligent responsive bionic surface in two-dimensional/three-dimensional multifunctional devices.It can provide a new kind of generation Strategy for next generation functional bionic surface.In the research of this paper.Based on femtosecond laser fabrication technololy,micro-nano composite structures are prepared on the surface of new smart materials,and combined with the responsive advantages of new smart materials.a new type of bionic slippery surface interface optics,wettability and adhesion are realized.Such reversible regulation has demonstrated potential applications in the fields of microfluidics,optical fluidic devices,and smart windows.The specific content is as follows:a Joule thermal response bionic lubricating surface is prepared by using femtosecond laser processing technology.Based on the fast thermal response rate of the silver nanowire heater,the reversible droplet control between pining and sliding on multidimensional surface can be realized by in situ loading and discharge of the ultra-low service voltage.By constructing the corresponding mechanical model,the thermodynamic mechanism of droplet slip is clarified,It also showed that this new type of bionic functional device has ultra-fast self-repairing performance under the assistance of Joule heat,which provides a new idea for the design of anti-fog and anti-icing surfaces.In order to expand the applicability of the bionic functional slippery surface to manipulate gases under water.Based on femtosecond laser processing technology,a super-hydrophobic structure is processed on the surface of the composite material doped with ferroferric oxide,and a smart light-responsive bionic slippery surface is prepared by injecting lubricant into it.Through real-time monitoring the changes in the morphology of the meniscus on both sides of the underwater bubble during the movement of the optical drive,it is revealed that the wetting gradient induced by the near-infrared light is the key factor that driving the controllable movement of the underwater bubble,the dynamic control of underwater bubbles on horizontal and inclined surfaces is realized by regulating the irradiation position of the near-infrared light,it demonstrates the potential applications in underwater optical flow control and other fields.In order to realize the control of gas transport behavior in a complex fluid environment(such as dynamic water).Combined with femtosecond laser processing technology,a new type of functional lubricating surface with mixed lubricant injection was prepared.The quantitative relationship between the lubricant doping ratio and the air bubbles transport performance were studied,By adjusting the dynamic light irradiation path to form an anisotropic sliding interface,clarifying the movement principle of underwater bubbles on the molten paraffin,the control flexible of underwater bubbles on inclined surface can be achieved via regulating the irradiation path of the near-infrared light.At the same time,this new type of lubricating surface exhibits excellent anti-interference ability in flowing water,which providing a new solution for fluid brakes to manipulate fluid in more complex environments.Combining the advantages of silver nanowire transparent film heater,polydimethylsiloxane and paraffin.Based on femtosecond laser processing technology,a multifunctional bionic lubricating interface with in situ switchable optical transmittance and wettability is prepared.the optical transmittance and wettability of the surface can be regulated Synchronously through electrical stimulation.It realizes programmable information visibility and functional application of motion control for functional droplets,which demonstrates its potential applications in the fields of microfluidics,self-cleaning surfaces and smart windows.