chanelink logo
CHANELINK
Deutsch

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

511
2023-08-11 14:28:54
Übersetzung anzeigen
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
Ähnliche Empfehlungen

  • Webasto joins hands with Tongkuai to lead the new trend of electric vehicle technology

    In the process of selecting electric vehicles, the effectiveness of the heating system is often overlooked. However, this system is crucial for providing a warm and comfortable driving environment and removing frost and fog from winter windows. More importantly, it can also improve battery efficiency, as the battery performs best within a specific temperature range.Unlike internal combustion engin...

    2024-06-12
    Übersetzung anzeigen

  • Reverse Modeling of 3D Scanning Reading in Hong Kong: Production Innovation in the Digital Era

    In the wave of the digital age, Hong Kong, as an international business center, constantly explores the application of new technologies in the manufacturing industry. Among them, 3D scanning and reverse modeling technology is emerging, bringing a new production innovation to the manufacturing industry. This article will explore the application of 3D scanning and reverse modeling in Hong Kong, as w...

    2024-03-30
    Übersetzung anzeigen

  • Developing a concentration independent pressure sensing method for high-temperature combustion diagnosis

    Recently, a research group led by Professor Gao Xiaoming and Professor Liu Kun of the Chinese Academy of Sciences Hefei Institute of Physical Sciences developed a concentration independent pressure sensing method based on two-color laser absorption spectrum for high-temperature combustion diagnosis.The research findings are published in Optics Letters.Aircraft engines are developing towards high-t...

    2024-03-08
    Übersetzung anzeigen

  • Researchers use a new frequency comb to capture photon high-speed processes

    From detecting COVID in respiration to monitoring greenhouse gas concentrations, laser technology called frequency combs can recognize specific molecules as simple as carbon dioxide to as complex as monoclonal antibodies, with unparalleled accuracy and sensitivity. Although frequency combs have incredible capabilities, their ability to capture high-speed processes such as hypersonic propulsion or ...

    2023-11-02
    Übersetzung anzeigen

  • TRUMPF will launch a fully automatic laser drilling machine for interconnected manufacturing equipped with a 6-kilowatt fiber laser

    TRUMPF introduced its TruMatic 5000 manufacturing unit and new SheetMaster automatic loading and unloading device technology at the 2023 Blechexpo Metal Plate Processing Exhibition in Stuttgart, Germany.Users of the new system will benefit from fully automatic laser cutting, punching, and forming capabilities. The new SheetMaster device can achieve fully automated material flow within the manufact...

    2023-10-23
    Übersetzung anzeigen