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droplet manipulation and Crystallization Regulation in Inkjet-Printed Perovskite Film Formation

CCS Chemistry 2022年第5期4卷 1465-1485页

作者： Yajie Cheng Hangjuan Wu Junjie Ma Pengwei Li Zhenkun Gu Shuangquan Zang Liyuan Han Yiqiang Zhang Yanlin Song School of Materials Science and Engineering Henan Institute of Advanced TechnologyZhengzhou UniversityZhengzhou 450001 College of Chemistry Zhengzhou UniversityZhengzhou 450001 State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240 Key Laboratory of Green Printing Institute of ChemistryChinese Academy of Sciences(ICCAS)Beijing Engineering Research Center of Nanomaterials for Green Printing TechnologyNational Laboratory for Molecular Sciences(BNLMS)Beijing 100190

Emerging organic–inorganic metal halide perovskite materials have become the focus of the optoelectronics research community owing to their excellent photoelectric ***,challenges still exist for transferring the lab-made devices to largearea industrial *** printing(IJP)technology provides a promising way to fill the gap because of its precise droplet control and uniform large-scale deposition ***,an in-depth understanding of inkjet-printed perovskite films in terms of droplet manipulation and crystallization regulation is critical for upscaling the perovskite devices to commercial *** this review,we give an overview of inkjet-printed high-quality perovskite films and provide guidelines on inkjet-printing large-scale highperformance perovskite ***,we analyze theories of droplet formation and perovskite nucleation/crystallization dynamics and then focus on summarizing the perovskite film-formation strategies via IJP,in the aspects of ink engineering,the printing process,and ***,we review the recent advances of inkjet-printed perovskite films on optoelectronic devices,such as perovskite solar cells,perovskite light-emitting diodes,and perovskite ***,we highlight the“Trilogy Strategies,”including ink engineering,printing process,and posttreatment for printing high-quality perovskite films.

关键词： inkjet printing perovskite droplet manipulation crystallization film formation optoelectronic devices

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Photo-responsive droplet manipulation slippery lubricant-infused porous surface with ultra-high durability

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Chinese Physics B 2023年第11期32卷 87-95页

作者：刘泽志张琛文通李荟竹高文萍王新孔赵伟王凯歌白晋涛 State Key Laboratory of Photon-Technology in Western China Energy Xi’an 710069China International Collaborative Center on Photoelectric Technology and Nano Functional Materials Xi’an 710069China Key Laboratory of Optoelectronics Technology in Shaanxi Province Xi’an 710069China Institute of Photonics&Photon Technology Northwest UniversityXi’an 710069China

Photo-responsive slippery lubricant-infused porous surface(SLIPS) for droplet manipulation is flexible, noncontact and non-destructive in droplet manipulation, which has promising applications in flexible robotics, microfluidics,biomedicine, and chemical analysis. However, the repeated manipulations for droplets of SLIPSs are quite limited in the works reported so far, the poor durability of droplet manipulation severely limits the practical application of the surfaces. In this paper, an Fe3O4-doped polydimethylsiloxane(PDMS)-based SLIPS is proposed and implemented to achieve ultra-high repeated droplet manipulation numbers under near-infrared ray(NIR) laser irradiation. Firstly, a micron columnar array structure with micro-pits on the top side, as well as, a wall structure out of the array is designed on SLIPS to reserve the lubricant. Secondly, the prototype of the SLIPS is fabricated by a 3-step ultraviolet(UV) lithography, and subsequently immersed in silicone oil for more than 96 h to obtain the ultra-high durability slippery lubricant-infused porous surface(UD-SLIPS). With a power of 25 m W–85 m W NIR laser, the repeated manipulation of microdroplets(≤ 5 μL) in the scale of 1 cm can exceed more than 3000 times which is far beyond that in previous reports. Finally, the droplet manipulation performance of this photo-responsive UD-SLIPS and the influence of infusion time on durability are investigated. The mechanism of the PDMS swelling effect is found to be the key factor in improving the droplet manipulation durability of SLIPS. The findings of this work would be of great significance for the development of highly durable photo-responsive functional surfaces for droplet manipulation.

关键词： photo-responsive droplet manipulation slippery lubricant-infused porous surface(SLIPS) ultra-violet(UV)lithography

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A shape-reconfigurable,light and magnetic dual-responsive shape-memory micropillar array chip for droplet manipulation

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Chinese Chemical Letters 2024年第1期35卷 456-460页

作者： Wen-Qi Ye Wen-Xin Fu Xiao-Peng Liu Chun-Guang Yang Zhang-Run Xu Research Center for Analytical Sciences Northeastern UniversityShenyang 110819China

droplet manipulation on an open surface has great potential in chemical analysis and biomedicine ***,most of the reported platforms designed for the manipulation of water droplets cannot thoroughly solve the problem of droplet ***,we report a shape-reconfigurable micropillar array chip for the manipulation of water droplets,oil droplets and water-in-oil ***-in-oil droplets provide an enclosed space for water droplets,preventing the evaporation in an open *** coated on the surface of the chip effectively reduces the droplet movement *** micropillar array chip has light and magnetic dual-response due to the Fe3O4 nanoparticles and the reduced iron powder mixed in the shape-memory *** micropillars irradiated by a near-infrared laser bend under the magnetic force,while the unirradiated micropillars still keep their original *** the absence of a magnetic field,when the micropillars in a temporary shape are irradiated by the near-infrared laser to the transition temperature,the micropillars return to their initial *** this process,the surface morphology gradient caused by the deformation of the micropillars and the surface tension gradient caused by the temperature change jointly produce the driving force of droplet movement.

关键词： Microfluidics droplet manipulation Micropillar array Shape memory polymer Magnetic response Light response

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Laser fabrication of modular superhydrophobic chips for reconfigurable assembly and self-propelled droplet manipulation

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PhotoniX 2021年第1期2卷 186-198页

作者： Huan Wang Yong-Lai Zhang Dong-Dong Han Wei Wang Hong-Bo Sun State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun 130012China Hooke Instruments Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityHaidianBeijing 100084China.

Natural creatures that enables controllable liquid transport provides the inspiration fordeveloping novel microfluidic devices by engineering functional surfaces withsuperwettability. However, towards microfluidic applications, the strict requirements ofsophisticated droplet manipulation make it challenging to reach this end. In this work,we report a conceptually new self-propelled droplet manipulation strategy based onreconfigurable superhydrophobic chips. The modular droplet chip (MDC) is developedby laser embossing a series of superhydrophobic structures on elastomer jigsaws thatact as functional units. MDC is potable since only gravity is used as the driving force fordynamic manipulation of liquid droplets, including droplets transporting, splitting,merging and bouncing without mass loss. The MDC demonstrated reasonable anticross-contamination property due to the water repellence of the *** assembly of MDC enables different chip functions including solution dilution,SERS detection, cell labeling and chemical synthesis. As a miniature and portableexperimental platform, the MDC is promising for next-generation lab-on-a-chip systems.

关键词： Superhydrophobic surface Laser processing droplet chip droplet manipulation On-chip analysis

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Triboelectric‘electrostatic tweezers'for manipulating droplets on lubricated slippery surfaces prepared by femtosecond laser processing

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International Journal of Extreme Manufacturing 2024年第3期6卷 411-426页

作者： Jiale Yong Xinlei Li Youdi Hu Yubin Peng Zilong Cheng Tianyu Xu Chaowei Wang Dong Wu CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Precision Machinery and Precision InstrumentationUniversity of Science and Technology of ChinaHefei 230027People’s Republic of China

The use of‘Electrostatic tweezers'is a promising tool for droplet manipulation,but it faces many limitations in manipulating droplets on superhydrophobic ***,we achieve noncontact and multifunctional droplet manipulation on Nepenthes-inspired lubricated slippery surfaces via triboelectric electrostatic tweezers(TETs).The TET manipulation of droplets on a slippery surface has many advantages over electrostatic droplet manipulation on a superhydrophobic *** electrostatic field induces the redistribution of the charges inside the neutral droplet,which causes the triboelectric charged rod to drive the droplet to move forward under the electrostatic *** or negatively charged droplets can also be driven by TET based on electrostatic attraction and *** enables us to manipulate droplets under diverse conditions,including anti-gravity climb,suspended droplets,corrosive liquids,low-surface-tension liquids(*** with a surface tension of 22.3 mN·m^(-1)),different droplet volumes(from 100 nl to 0.5 ml),passing through narrow slits,sliding over damaged areas,on various solid substrates,and even droplets in an enclosed *** droplet-related applications,such as motion guidance,motion switching,droplet-based microreactions,surface cleaning,surface defogging,liquid sorting,and cell labeling,can be easily achieved with TETs.

关键词： triboelectric electrostatic tweezer droplet manipulation slippery surface superhydrophobic surface femtosecond laser

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Light control of droplets on photo-induced charged surfaces

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National Science Review 2023年第1期10卷 259-267页

作者： Fang Wang Meijin Liu Cong Liu Chao Huang Lidong Zhang Anyang Cui Zhigao Hu Xuemin Du Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences University of Chinese Academy of Sciences Department of Chemistry and Molecular Engineering East China Normal University Technical Center for Multifunctional Magneto-Optical Spectroscopy(Shanghai) Engineering Research Center of Nanophotonics and Advanced Instrument(Ministry of Education)Department of Physics School of Physics and Electronic Science East China Normal University

The manipulation of droplets plays a vital role in fundamental research and practical applications,from chemical reactions to *** an intriguing and active format,light control of droplets,typically induced by photochemistry,photomechanics,light-induced Marangoni effects or light-induced electric fields,enables remote and contactless control with remarkable spatial and temporal ***,current light control of droplets suffers from poor performance and limited *** we develop a new superamphiphobic material that integrates the dual merits of light and electric field by rationally preparing liquid metal particles/poly(vinylidene fluoride-trifluoroethylene) polymer composites with photo-induced charge generation capability in real time,enabling light control of droplets on the basis of photo-induced dielectrophoretic *** demonstrate that this photo-induced charged surface(PICS)imparts a new paradigm for controllable droplet motion,including high average velocity(～35.9 mm s-1),unlimited distance,multimode motions(***,backward and rotation) and single-to-multiple droplet manipulation,which are otherwise unachievable in conventional *** further extend light control of droplets to robotic and bio-applications,including transporting a solid cargo in a closed tube,crossing a tiny tunnel,avoiding obstacles,sensing the changing environment via naked-eye color shift,preparing hydrogel beads,transporting living cells and reliable *** PICS not only provides insight into the development of new smart interface materials and microfluidics,but also brings new possibilities for chemical and biomedical applications.

关键词： light control droplet manipulation smart surface liquid metal ferroelectric

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Remote,selective,and in situ manipulation of liquid droplets on a femtosecond laser-structured superhydrophobic shape-memory polymer by near-infrared light

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Science China Chemistry 2021年第5期64卷 861-872页

作者： Xue Bai Jiale Yong Chao Shan Yao Fang Xun Hou Feng Chen State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information School of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China

droplet manipulation plays a significant role in the fields of biomedical detection,microfluidics,and chemical ***,it still remains a great challenge to simultaneously achieve remote,selective,and in situ droplet manipulation on the same ***,Fe_(3)O_(4)nanoparticles were doped in a shape-memory polymer(SMP)to prepare a photothermal-responsive Fe_(3)O_(4)-SMP composite which showed remarkable near-infrared(NIR)light-triggered shape-memory *** micropillar array was constructed on such Fe_(3)O_(4)-SMP composite through femtosecond laser microfabrication and fluoroalkylsilane *** surface wettability of the as-prepared surface can transform from a low-adhesive sliding state to a high-adhesive pinning state as the micropillars are deformed by ***,the deformed micropillars can stand up and restore to their original morphology under remote NIR light irradiation,resulting in the reversible and repeatable recovery of the ultralow-adhesive *** such light-triggered wettability switching,the droplets pinning on the sample surface can be remotely,selectively,and in situ ***,the superhydrophobic Fe_(3)O_(4)-SMP surface is successfully applied in lossless liquid transfer,selective droplet release,and droplet-based *** as-fabricated superhydrophobic surfaces with NIR light-controlled reversible wettability will hold great promise in the fields of liquid manipulation,lab-on-a-chip,and microfluidics.

关键词： droplet manipulation superhydrophobicity shape-memory polymer femtosecond laser light responsive

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Recent progress in bio-inspired macrostructure array materials with special wettability—from surface engineering to functional applications

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International Journal of Extreme Manufacturing 2024年第1期6卷 208-256页

作者： Zhongxu Lian Jianhui Zhou Wanfei Ren Faze Chen Jinkai Xu Yanling Tian Huadong Yu School of Mechanical and Aerospace Engineering Jilin UniversityChangchun 130022People’s Republic of China Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing Changchun University of Science and TechnologyChangchun 130022People’s Republic of China College of Mechanical and Electrical Engineering Changchun University of Science and TechnologyChangchun 130022People’s Republic of China School of Mechanical Engineering Tianjin UniversityTianjin 300350People’s Republic of China School of Engineering University of WarwickCoventry CV47ALUnited Kingdom

Bio-inspired macrostructure array(MAA,size:submillimeter to millimeter scale)materials with special wettability(MAAMs-SW)have attracted significant research attention due to their outstanding performance in many applications,including oil repellency,liquid/droplet manipulation,anti-icing,heat transfer,water collection,and oil–water *** this review,we focus on recent developments in the theory,design,fabrication,and application of bio-inspired *** first review the history of the basic theory of special wettability and discuss representative structures and corresponding functions of some biological surfaces,thus setting the stage for the design and fabrication of bio-inspired *** then summarize the fabrication methods of special wetting MAAs in terms of three categories:additive manufacturing,subtractive manufacturing,and formative manufacturing,as well as their diverse functional applications,providing insights into the development of these ***,the challenges and directions of future research on bio-inspired MAAMs-SW are briefy *** efforts,progress,and breakthroughs from surface engineering to functional applications elaborated herein will promote the practical application of bio-inspired MAAMs-SW.

关键词： macrostructure arrays superhydrophobic 3D printing laser droplet manipulation

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Recent developments of droplets-based microfluidics for bacterial analysis

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Chinese Chemical Letters 2022年第5期33卷 2243-2252页

作者： Ruizhi Ning Jinhai Fan Liang Kong Xue Jiang Yun Qian Tao Du Guangjian Zhang Weiwei Wu Interdisciplinary Research Center of Smart Sensors Academy of Advanced Interdisciplinary ResearchXidian UniversityXi’an 710071China The First Affiliated Hospital of Xi’an Jiaotong University Xi’an 710061China State Key Laboratory of Military Stomatology&National Clinical Research Center for Oral Diseases and Shaanxi Clinical Research Center for Oral Diseases Department of Oral and Maxillofacial SurgerySchool of StomatologyAir Force Medical UniversityXi’an 710032China Stomatology Hospital School of StomatologyZhejiang University School of MedicineClinical Research Center for Oral Diseases of Zhejiang ProvinceKey Laboratory of Oral Biomedical Research of Zhejiang ProvinceCancer Center of Zhejiang UniversityHangzhou 310006China

droplet-based microfluidics enables the generation of uniform microdroplets at picoliter or nanoliter scale with high frequency(∼kHz)under precise *** droplets can function as bioreactors for versatile chemical/biological study and *** advantage of the discrete compartment with a confined volume,(1)isolation and manipulation of a single cell,(2)improvement of in-droplet effective concen-trations,(3)elimination of heterogeneous population effects,(4)diminution of contamination risks can be achieved,making it a powerful tool for rapid,sensitive,and high-throughput detection and analysis of bacteria,even for rare or unculturable strains in conventional *** mini-review will focus on the generation and manipulation of micro-droplets and bacteria detection and analysis carried out by droplet-based ***,applications with high potential of droplet-based bacteria analysis are briefly *** to the advantages of rapid,sensitive,high throughput,and compatibility with rare and unculturable bacteria in conventional methods,droplet-based microfluidics has tremendous potential of providing novel solutions for biological medicine,microbiological engineering,environmental ecology,etc.

关键词： droplet microfluidics droplet generation droplet manipulation High throughput Bacteria analysis

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Transpiration-inspired Capillary for Synchronous Synthesis and Patterning of Silver Nanoparticles

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Chemical Research in Chinese Universities 2023年第1期39卷 133-138页

作者： CHEN Bingda ZHANG Zelong SU Meng QIN Feifej PAN Qi XIE Daixi YANG Xu ZHANG Kun ZHANG Zeying XIE Hongfei CARMELIET Jan SONG Yanlin Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing Engineering Research Center of Nanomaterials for Green Printing TechnologyBeijing National Laboratory for Molecular Sciences(BNLMS)Beijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China Institute of Extreme Mechanics and School of Aeronautics Northwestern Polytechnical UniversityXi’an710072P.R.China Chair of Building Physics Department of Mechanical and Process EngineeringETH ZürichZürich8092Switzerland

Traditional synthesis strategy of nanomaterials with complicated process and high cost limits their ***,we propose a facile process for the synchronous synthesis and patterning of silver nanoparticles(Ag NPs)through the self-driven microchannel reactor with the capillary effect inspired by *** evaporation contributes to capillary and accumulation effects in the *** silver reactant-containing droplets can be spontaneously divided and distributed in multiple microchannels during the whole fabrication process by the capillary *** newly formed Ag NPs at the gas-liquid interface can be assembled on both sides of the microchannels by the accumulation *** capillary effect decreases the disturbances,which ensures the uniformity of the *** the combination of microchannels with different widths,various Ag NPs-assembled patterns with stable electrical properties are *** efficient strategy with a simple fabrication procedure is towards the technological engineering of nanoscale architected materials.

关键词： Transpiration Capillary effect droplet manipulation Nanoparticle Patterning

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