Icing on the surface of aircraft will not only aggravate its quality and affect flight control,but even cause safety accidents,which is one of the important factors restricting all-weather flight.Bio-inspired anti-ici...Icing on the surface of aircraft will not only aggravate its quality and affect flight control,but even cause safety accidents,which is one of the important factors restricting all-weather flight.Bio-inspired anti-icing surfaces have gained great attention recently due to their low-hysteresis,non-stick properties,slow nucleation rate and low ice adhesion strength.These bio-inspired anti-icing surfaces,such as superhydrophobic surfaces,slippery liquid-infused porous surfaces and quasi-liquid film surfaces,have realized excellent anti-icing performance at various stages of icing.However,for harsh environment,there are still many problems and challenges.From the perspective of bioinspiration,the mechanism of icing nucleation,liquid bounce and ice adhesion has been reviewed together with the application progress and bottleneck issues about anti-icing in view of the process of icing.Subsequently,the reliability and development prospect of active,passive and active-passive integrated anti-icing technology are discussed,respectively.展开更多
Solar power,as one of renewable energy,holds potential application for producing steam which relies on high-temperature liquid by traditional methods.Herein,steam was generated by a bio-inspired strategy derived from ...Solar power,as one of renewable energy,holds potential application for producing steam which relies on high-temperature liquid by traditional methods.Herein,steam was generated by a bio-inspired strategy derived from the plants transpiration using a Printed Recyclable Carbon Membrane(PRCM).The membrane structure facilitated the concentration of carbon particles for the photoreaction and the heat generation for water evaporation,thereby improving the photo-thermal conversion efficiency.The PRCM achieved the best steady evaporation efficiency of 51.9%,which was 5.6 times higher than the value for water and recycling tests were demonstrated.The carbon particles were separated from the water under the magnetism action,a convenient approach that avoided secondary pollution resulting from the disintegration of the PRCM.Rapid preparation,low cost,and reusability of the printed carbon membrane allow for photo-thermal applications such as solar steam generation and seawater desalination.展开更多
The coffee ring effect commonly exists in droplet deposition patterns,which fundamentally affects scientific research and industrial applications,like pharmaceutical purification,salt manufacturing,etc.Some researcher...The coffee ring effect commonly exists in droplet deposition patterns,which fundamentally affects scientific research and industrial applications,like pharmaceutical purification,salt manufacturing,etc.Some researchers have tried different solutions to control the distributions of droplet deposition patterns,but most control deposits by adjusting droplet characteristics.In this work,droplet deposition patterns with different wettability are investigated by both localized and substrate heating.A whole process of droplet evaporation is recorded.The droplet generally evaporates from Constant Contact Radius(CCR)mode to Constant Contact Angle(CCA)mode,and CCR stage occupies the most of time.Experimental results show that,without any chemicals,laser induced local heating transitions particle deposition patterns from ring-like structure to dot-like patterns on a hydrophilic surface,driving most saline solvent to the center.Meanwhile,a hydrophobic surface is also investigated showing that the particles tend to assemble at the central area,but the pattern is slightly different compared to that on hydrophilic surface.In addition,physical mechanisms of local heating and heating from substrate are also explored.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.T2121003,51725501,51935001,52205297).
文摘Icing on the surface of aircraft will not only aggravate its quality and affect flight control,but even cause safety accidents,which is one of the important factors restricting all-weather flight.Bio-inspired anti-icing surfaces have gained great attention recently due to their low-hysteresis,non-stick properties,slow nucleation rate and low ice adhesion strength.These bio-inspired anti-icing surfaces,such as superhydrophobic surfaces,slippery liquid-infused porous surfaces and quasi-liquid film surfaces,have realized excellent anti-icing performance at various stages of icing.However,for harsh environment,there are still many problems and challenges.From the perspective of bioinspiration,the mechanism of icing nucleation,liquid bounce and ice adhesion has been reviewed together with the application progress and bottleneck issues about anti-icing in view of the process of icing.Subsequently,the reliability and development prospect of active,passive and active-passive integrated anti-icing technology are discussed,respectively.
基金This work is financially supported by the China National Key Research and Development Plan Project(2018YFA0702300)the National Natural Science Foundation of China(51676060)+1 种基金EU ThermaSMART project H2020-MSCA-RISE(778104)Smart thermal management of high power microprocessors using phase-change(ThermaSMART).
文摘Solar power,as one of renewable energy,holds potential application for producing steam which relies on high-temperature liquid by traditional methods.Herein,steam was generated by a bio-inspired strategy derived from the plants transpiration using a Printed Recyclable Carbon Membrane(PRCM).The membrane structure facilitated the concentration of carbon particles for the photoreaction and the heat generation for water evaporation,thereby improving the photo-thermal conversion efficiency.The PRCM achieved the best steady evaporation efficiency of 51.9%,which was 5.6 times higher than the value for water and recycling tests were demonstrated.The carbon particles were separated from the water under the magnetism action,a convenient approach that avoided secondary pollution resulting from the disintegration of the PRCM.Rapid preparation,low cost,and reusability of the printed carbon membrane allow for photo-thermal applications such as solar steam generation and seawater desalination.
基金We acknowledge the funding EU ThermaSMART project H2020-MSCA-RISE(778104)Smart thermal management of high power microprocessors using phase-change(ThermaSMART)from the China Scholarship Council(CSC).
文摘The coffee ring effect commonly exists in droplet deposition patterns,which fundamentally affects scientific research and industrial applications,like pharmaceutical purification,salt manufacturing,etc.Some researchers have tried different solutions to control the distributions of droplet deposition patterns,but most control deposits by adjusting droplet characteristics.In this work,droplet deposition patterns with different wettability are investigated by both localized and substrate heating.A whole process of droplet evaporation is recorded.The droplet generally evaporates from Constant Contact Radius(CCR)mode to Constant Contact Angle(CCA)mode,and CCR stage occupies the most of time.Experimental results show that,without any chemicals,laser induced local heating transitions particle deposition patterns from ring-like structure to dot-like patterns on a hydrophilic surface,driving most saline solvent to the center.Meanwhile,a hydrophobic surface is also investigated showing that the particles tend to assemble at the central area,but the pattern is slightly different compared to that on hydrophilic surface.In addition,physical mechanisms of local heating and heating from substrate are also explored.
