Droplet manipulation holds significant promise across the energy, environmental, and medical fields. However, current methods still lack a solution that simultaneously satisfies the requirements for self-powered energy supply, high efficiency, human-droplet interaction, flexibility, and universality. Herein, we develop a human-droplet interaction platform based on an omni-directional triboelectric tweezer, which directly utilizes triboelectric charges induced by human motion to manipulate droplets. The omni-directional triboelectric tweezer produces the charges and electric field necessary for droplet control through simple sliding motions, thereby eliminating conventional dependencies on power source and complex electrode arrays. Moreover, its omni-directional operation capability further enhances the flexibility and precision of droplet manipulation. Our approach demonstrates effective droplet manipulation in both gas and liquid phases through hand movements, enabling a range of operations such as efficient transportation, precise anchoring, flexible steering, merging chemical reactions, and drug extraction, showcasing its comprehensive application capabilities.
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http://dx.doi.org/10.1038/s41467-025-57656-2 | DOI Listing |
ACS Nano
March 2025
School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Liquid-vapor phase-change heat transfer plays an important role in many industrial systems, ranging from power generation and air conditioning to water desalination, food processing, and thermal management of electronics and data centers. Recent advances in micro/nanofabrication have enabled desirable manipulation of multiscale dynamics governing droplet/bubble motion and capillary liquid flows for highly efficient phase-change heat transfer. However, there lacks a comprehensive review on the design and fabrication of micro/nanostructured surfaces with controlled morphology and wettability, to enhance the diverse phase-change heat transfer processes.
View Article and Find Full Text PDFNano Lett
March 2025
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230027, P. R. China.
Smart surfaces with switchable adhesion have garnered significant attention in wearable devices, robotics, and biological detection. However, achieving universal switchable adhesion at both solid and liquid interfaces is still challenging. Here, we report a thermo-induced biomimetic switchable slippery interface (TBSSI) with robust solid and liquid adhesion, inspired by octopus tentacles and slippery mussels.
View Article and Find Full Text PDFNat Commun
March 2025
Department of Physics, College of Basic Medical Sciences, Army Medical University, Chongqing, China.
Droplet manipulation holds significant promise across the energy, environmental, and medical fields. However, current methods still lack a solution that simultaneously satisfies the requirements for self-powered energy supply, high efficiency, human-droplet interaction, flexibility, and universality. Herein, we develop a human-droplet interaction platform based on an omni-directional triboelectric tweezer, which directly utilizes triboelectric charges induced by human motion to manipulate droplets.
View Article and Find Full Text PDFCyborg Bionic Syst
March 2025
Key Laboratory of Biomimetic Robots and Systems (Beijing Institute of Technology), Ministry of Education, Beijing 100081, China.
Digital microfluidic chips (DMCs) have shown huge potential for biochemical analysis applications due to their excellent droplet manipulation capabilities. The driving force is a critical factor for characterizing and optimizing the performance of droplet manipulation. Conducting numerical analysis of the driving force is essential for DMC design, as it helps optimize the structural parameters.
View Article and Find Full Text PDFNano Lett
March 2025
School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China.
Droplets manipulation has attracted increasing attention for its increasingly widespread applications. However, current droplet manipulation usually needs complex preparation methods. Here, inspired by lotus leaves, rive leaves, and desert beetles, triple biomimetic surfaces are prepared through laser and heating.
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