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| 1 | Reconfiguring confined magnetic colloids with tunable fluid transport behavior显示文摘Collective dynamics of confined colloids are crucial in diverse scenarios such as self-assembly and phase behavior in materials science,microrobot swarms for drug delivery and microfluidic control.Yet,fine-tuning the dynamics of colloids in microscale confined spaces is still a formidable task due to the complexity of the dynamics of colloidal suspension and to the lack of methodology to probe colloids in confinement.Here,we show that the collective dynamics of confined magnetic colloids can be finely tuned by external magnetic fields.In particular,the mechanical properties of the confined colloidal suspension can be probed in real time and this strategy can be also used to tune microscale fluid transport.Our experimental and theoretical investigations reveal that the collective configuration characterized by the colloidal entropy is controlled by the colloidal concentration,confining ratio and external field strength and direction.Indeed,our results show that mechanical properties of the colloidal suspension as well as the transport of the solvent in microfluidic devices can be controlled upon tuning the entropy of the colloidal suspension.Our approach opens new avenues for the design and application of drug delivery,microfluidic logic,dynamic fluid control,chemical reaction and beyond. | Zhizhi Sheng Mengchuang Zhang Jing Liu Paolo Malgaretti Jianyu Li Shuli Wang Wei Lv Rongrong Zhang Yi Fan Yunmao Zhang Xinyu Chen Xu Hou | 2021 | National Science Review2021，8，5： | 1 |
| 2 | Photothermally induced liquid gate with navigation control of the fluid transport显示文摘The ability to control multiphase flows is essential for applications such as microvalves,chemical analyses,mi-croreactors,and multiphase separators.Furthermore,more specific controls,including the positional naviga-tion control of fluids under steady-state pressures,will improve the development of these applications.Here,we present a fundamentally new photothermally induced liquid gating system that allows light-controlled con-tactless fluid transport and gas/liquid separations at designated locations,with seconds response times,under constant pressures.Experiments and theoretical calculations demonstrate the stability of our system and its novel regulation mechanism,which is based on a photothermally induced liquid-reconfigurable gate with a change in the surface/interfacial tension and Marangoni flow redistribution of the gating liquid at the illuminated location.This regulation mechanism with positional navigation properties requires neither mechanical parts nor complex accessories and can further enable the miniaturization and integration of various engineering processes.Our ap-plication demonstrations confirm the potential of this system in fields of smart valves,multiphase separations,multiphase microreactors,and beyond. | Yuhang Han Yunmao Zhang Mengchuang Zhang Baiyi Chen Xinyu Chen Xu Hou | 2021 | Fundamental Research2021，1，6： | 0 |
| 3 | Energy saving thermal adaptive liquid gating system显示文摘Thermal transfer systems involving temperature control through heating,ventilation,and air conditioning applications have emerged as one of the largest energy issues in buildings.Traditional approaches mainly comprise closed and open systems,both of which have certain advantages and disadvantages in a single heating or cooling process.Here we report a thermal adaptive system with beneficial energy-saving properties,which uses functional liquid to exhibit high metastability,providing durability in a temperature-responsive liquid gating system. | Baiyi Chen Mengchuang Zhang Yaqi Hou Huimeng Wang Rongrong Zhang Yi Fan Xinyu Chen Xu Hou | 2022 | The Innovation2022，3，3： | 0 |
| 4 | Performance prediction of magnetorheological fluid‐based liquid gating membrane by kriging machine learning method显示文摘Smart liquid gating membrane is a responsive structural material as a pressure-driven system that consists of solid membrane and dynamic liquid,responding to the external field.An accurate prediction of rheological and mechanical properties is important for the designs of liquid gating membranes for various applications.However,high predicted accuracy by the traditional sequential method requires a large amount of experimental data,which is not practical in some situations.To conquer these problems,artificial intelligence has promoted the rapid development of material science in recent years,bringing hope to solve these challenges.Here we propose a Kriging machine learning model with an active candidate region,which can be smartly updated by an expected improvement probability method to increase the local accuracy near the most sensitive search region,to predict the mechanical and rheolo-gical performance of liquid gating system with an active minimal size of ex-perimental data.Besides this,this new machine learning model can instruct our experiments with optimal size.The methods are then verified by liquid gating membrane with magnetorheological fluids,which would be of wide interest for the design of potential liquid gating applications in drug release,microfluidic logic,dynamic fluid control,and beyond. | Mengchuang Zhang Yuan Jing Jian Zhang Zhizhi Sheng Yaqi Hou Jiadai Xu Baiyi Chen Jing Liu Miao Wang Xu Hou | 2022 | Interdisciplinary Materials2022，1，1： | 0 |
| 5 | High-safety and high-voltage lithium metal batteries enabled by nonflammable diluted highly concentrated electrolyte显示文摘Lithium metal batteries(LMBs)show great promise for achieving energy densities over 400 Wh·kg^(-1).However,highly flammable organic electrolytes are a long-lasting problem that triggers safety hazards and hinders the commercial application of LMBs.Here,a nonflammable diluted highly concentrated electrolyte(DHCE)with ethoxy(pentafluoro)cyclotriphosphazene(PFPN)as a diluent is developed to simultaneously achieve high safety and cycling stability of high-voltage LMBs.The optimal DHCE not only ensures reversible Li deposition/dissolution behavior with a superior average Coulombic efficiency(CE)over 99.1%on lithium metal anode(LMA),but also suppresses side reactions and stress crack on the LiCoO_(2)(LCO)under high cut-off voltage.The newly developed DHCE exhibits high thermal stability,showing complete nonflammability and reduced heat generation between the electrolyte and delithiated LCO/cycled LMA.This work offers an opportunity for rational designing nonflammable electrolytes toward high-voltage and safe LMBs. | Han Zhang Ziqi Zeng Shuping Wang Yuanke Wu Changhao Li Mengchuang Liu Xinlan Wang Shijie Cheng Jia Xie | 2024 | Nano Research2024，17，4： | 0 |
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