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| 1 | SLIPS-TENG: robust triboelectric nanogenerator with optical and charge transparency using a slippery interface显示文摘Energy harvesting devices that prosper in harsh environments are highly demanded in a wide range of applications ranging from wearable and biomedical devices to self-powered and intelligent systems.Particularly,over the past several years,the innovation of triboelectric nanogenerators(TENGs)that efficiently convert ambient kinetic energy of water droplets or wave power to electricity has received growing attention.One of the main bottlenecks for the practical implications of such devices originates from the fast degradation of the physiochemical properties of interfacial materials under harsh environments.To overcome these challenges,here we report the design of a novel slippery lubricant-impregnated porous surface(SLIPS)based TENG,referred to as SLIPS-TENG,which exhibits many distinctive advantages over conventional design including optical transparency,configurability,self-cleaning,flexibility,and power generation stability,in a wide range of working environments.Unexpectedly,the slippery and configurable lubricant layer not only serves as a unique substrate for liquid/droplet transport and optical transmission,but also for efficient charge transfer.Moreover,we show that there exists a critical thickness in the liquid layer,below which the triboelectric effect is almost identical to that without the presence of such a liquid film.Such an intriguing charge transparency behavior is reminiscent of the wetting transparency and van der Waals potential transparency of graphene previously reported,though the fundamental mechanism remains to be elucidated.We envision that the marriage of these two seemingly totally different arenas(SLIPS and TENG)provides a paradigm shift in the design of robust and versatile energy devices that can be used as a clean and longer-lifetime alternative in various working environments. | Wanghuai Xu Xiaofeng Zhou Chonglei Hao Huanxi Zheng Yuan Liu Xiantong Yan Zhengbao Yang Michael Leung Xiao Cheng Zeng Ronald X. Xu Zuankai Wang | 2019 | National Science Review2019，6，3： | 6 |
| 2 | Droplet dynamics on slippery surfaces:small droplet,big impact显示文摘The dynamic interaction of droplets with slippery surfaces is essential to various industrial applications,such as anti-icing,water-repellency or water-harvesting,anti-bacterial,and phase change heat transfer.With recent progress in materials,manufacturing as well as learning from nature,the physics of droplet dynamics has been greatly enriched owing to the emergence of peculiar wetting states manifested on bio-inspired textured surfaces.This review is devoted to the discussion of the recent progress made in the authors’understanding of the dynamic interaction of small droplets with bio-inspired surfaces.Particular attention is given to droplet impact on slippery surfaces,such as superhydrophobic surfaces characterised with air-solid-liquid triple-phase interface and slippery lubricant infused porous surfaces characterised with the liquid/liquid two-phase interface.Droplet spreading,retraction,contact time,elastodynamics as well as oblique impact are systematically reviewed.Finally,the authors offer their perspectives on this important and highly multidisciplinary research area. | Yahua Liu Xiantong Yan Zuankai Wang | 2019 | Biosurface and Biotribology2019，5，2： | 4 |
| 3 | Nature-inspired surface topography: design and function显示文摘Learning from nature has traditionally and continuously provided important insights to drive a paradigm shift in technology.In particular,recent studies show that many biological organisms exhibit spectacular surface topography such as shape,size,spatial organization,periodicity,interconnectivity,and hierarchy to endow them with the capability to adapt dynamically and responsively to a wide range of environments.More excitingly,in a broader perspective,these normally neglected topological features have the potential to fundamentally change the way of how engineering surface works,such as how fluid flows,how heat is transported,and how energy is generated,saved,and converted,to name a few.Thus,the design of nature-inspired surface topography for unique functions will spur new thinking and provide paradigm shift in the development of the new engineering surfaces.In this review,we first present a brief introduction to some insights extracted from nature.Then,we highlight recent progress in designing new surface topographies and demonstrate their applications in emerging areas including thermal-fluid transport,anti-icing,water harvesting,power generation,adhesive control,and soft robotics.Finally,we offer our perspectives on this emerging field,with the aim to stimulate new thinking on the development of next-generation of new materials and devices,and dramatically extend the boundaries of traditional engineering. | XianTong Yan YuanKai Jin XueMei Chen Chao Zhang ChongLei Hao ZuanKai Wang | 2020 | Science China(Physics,Mechanics & Astronomy)2020，63，2： | 3 |
| 4 | Effect of Aerosol Particles on Orographic Clouds:Sensitivity to Autoconversion Schemes显示文摘Aerosol particles can serve as cloud condensation nuclei(CCN)to influence orographic clouds.Autoconversion,which describes the initial formation of raindrops from the collision of cloud droplets,is an important process for aerosol-cloud-precipitation systems.In this study,seven autoconversion schemes are used to investigate the impact of CCN on orographic warm-phase clouds.As the initial cloud droplet concentration is increased from 100 cm^(-3)to 1000 cm^(-3)(to represent an increase in CCN),the cloud water increases and then the rainwater is suppressed due to a decrease in the autoconversion rate,leading to a spatial shift in surface precipitation.Intercomparison of the results from the autoconversion schemes show that the sensitivity of cloud water,rainwater,and surface precipitation to a change in the concentration of CCN is different from scheme to scheme.In particular,the decrease in orographic precipitation due to increasing CCN is found to range from-87%to-10%depending on the autoconversion scheme.Moreover,the surface precipitation distribution also changes significantly by scheme or CCN concentration,and the increase in the spillover(ratio of precipitation on the leeward side to total precipitation)induced by increased CCN ranges from 10%to 55%under different autoconversion schemes.The simulations suggest that autoconversion parameterization schemes should not be ignored in the interaction of aerosol and orographic cloud. | Hui XIAO Yan YIN Pengguo ZHAO Qilin WAN Xiantong LIU | 2020 | Advances in Atmospheric Sciences2020，37，2： | 0 |
| 5 | Achieving ultra-stable and superior electricity generation by integrating transistor-like design with lubricant armor显示文摘Extensive work have been done to harvest untapped water energy in formats of raindrops,flows,waves,and others.However,attaining stable and efficient electricity generation from these low-frequency water kinetic energies at both individual device and large-scale system level remains challenging,partially owing to the difficulty in designing a unit that possesses stable liquid and charge transfer properties,and also can be seamlessly integrated to achieve preferential collective performances without the introduction of tortuous wiring and redundant node connection with external circuit.Here,we report the design of water electricity generators featuring the combination of lubricant layer and transistor-like electrode architecture that endows enhanced electrical performances in different working environments.Such a design is scalable in manufacturing and suitable for facile integration,characterized by significant reduction in the numbers of wiring and nodes and elimination of complex interfacing problems,and represents a significant step toward large-scale,real-life applications. | Yuxin Song Wanghuai Xu Yuan Liu Huanxi Zheng Miaomiao Cui Yongsen Zhou Baoping Zhang Xiantong Yan Lili Wang Pengyu Li Xiaote Xu Zhengbao Yang Zuankai Wang | 2022 | The Innovation2022，3，5： | 0 |
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