chanelink logo
CHANELINK
Nederlands

Professor Wu Dong's team at the University of Science and Technology of China created a "dancing microrobot" using femtosecond laser composite materials.

167
2023-08-11 14:28:54
Bekijk vertaling
It was learned from the University of Science and Technology of China that the team of Professor Wu Dong of the Micro and Nano Engineering Laboratory of the school proposed a femtosecond laser two-in-one multi-material processing strategy, manufactured a micromechanical joint composed of temperature-sensitive hydrogel and metal nanoparticles, and then developed a multi-joint humanoid micromachine with a variety of deformation modes. The results were published in Nature Communications.
 
In recent years, femtosecond laser two-photon polymerization, as a true 3D processing method with nanometer precision, has been widely used to fabricate various functional microstructures. These microstructures show broad application prospects in the fields of micro-nano optics, microsensors and micromachine systems. However, how to use femtosecond laser to realize composite multi-material processing and further build micro-nano machinery with multi-mode is still a great challenge.
 
According to the researchers, the femtosecond laser two-in-one processing strategy includes the construction of hydrogel joints using asymmetric two-photon polymerization and the deposition of silver nanoparticles by laser reduction in local areas of joints. Among them, asymmetric photopolymerization technology can produce anisotropy in the cross-linking density of the local region of the hydrogel micro-joint, and finally make the bending deformation controllable in direction and Angle. In situ laser reduction deposition can accurately process silver nanoparticles on hydrogel joints. These silver nanoparticles have a strong photothermal conversion effect, which makes the mode switching of multi-joint micromachines exhibit excellent characteristics of ultra-short response time and ultra-low drive power. 
 
As a typical example, eight micro-joints are integrated into a humanoid micromachine. Spatial light modulation technology is then used to achieve a multi-focus beam in 3D space, which in turn precisely stimulates each micro-joint. The cooperative deformation between multiple joints enables the humanoid micromanipulator to complete multiple reconfigurable deformation modes. Finally, the "dancing microrobot" was realized at the micron scale. As a proof of concept, by designing the distribution and deformation direction of the micro-joints, the double-jointed micro-robotic arm can collect multiple micro-particles in the same and different directions.
 
According to the researchers, the femtosecond laser two-in-one machining strategy can construct deformable micro-joints in various local areas of three-dimensional microstructures, and achieve a variety of reconfigurable deformation modes. In the future, micromanipulators with multiple deformation modes will show broad application prospects in micro-cargo collection, microfluidic manipulation and cell manipulation.
 
Source: Science and Technology Daily
Gerelateerde aanbevelingen

  • Tower Semiconductor is preparing to add laser integrated PIC for Scintil

    Grenoble stated that in the context of growing demand driven by artificial intelligence and 5G, "key" milestones have strengthened its supply chain.Scantil Photonics, a subsidiary of CEA Leti that focuses on silicon photonics, has stated that its integrated laser design is now being produced by Tower Semiconductor, a wafer foundry partner.This method describes this development as a "crucial step f...

    2024-02-29
    Bekijk vertaling

  • Progress in Research on Intervalley Scattering and Rabi Oscillation Driven by Coherent Phonons

    Two dimensional transition metal chalcogenides have multi valley structures in their energy bands, giving them electron valley degrees of freedom, making them an ideal platform for studying multi body interactions. As the main mechanism of valley depolarization, the valley scattering process of free electrons or bound excitons is crucial for exploring excited state electron phonon interactions and...

    2023-10-10
    Bekijk vertaling

  • Massachusetts University team achieves new breakthrough in photolithography chip

    Recently, a research team from the University of Massachusetts Amherst has pioneered a new technology that uses laser irradiation on concentric superlenses on chips to generate holograms, thereby achieving precise alignment of 3D semiconductor chips.This research result, published in the journal Nature Communications, is expected to not only reduce the production cost of 2D semiconductor chips, bu...

    2024-11-06
    Bekijk vertaling

  • A new type of flexible reflective mirror can improve the performance of X-ray microscopy

    A research team in Japan has designed a flexible and shapable X-ray reflector, achieving significant accuracy and higher stability at the atomic level.This new technology, developed by Satoshi Matsuyama and Takato Inoue from the Graduate School of Engineering at Nagoya University, in collaboration with the Japanese Institute of Physical and Chemical Research and JTEC Corporation, improves the perf...

    2024-05-06
    Bekijk vertaling

  • Eurotech launches BestNet fiber rack mounting housing

    Fiber optic solution provider Eurotech announced the launch of a series of fiber optic rack mounting enclosures. The BestNet 19 inch top opening fiber optic interconnect unit is a fiber optic patch panel and cabinet, ideal for wiring, terminating, and managing fiber optic terminations, suitable for interconnect, cross connect, or splice applications in LAN environments. Modular fiber optic interco...

    2024-05-16
    Bekijk vertaling