chanelink logo
CHANELINK
Français

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

390
2023-08-11 14:28:54
Voir la traduction
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
Recommandations associées

  • Atomstack leads the new track of intelligent laser engraving

    In today's rapidly developing technology, laser engraving technology is like a mysterious magician, constantly demonstrating amazing skills. In this field full of creativity and competition, Atomstack stands out with its outstanding technology and innovative spirit, becoming a leader in the new track.As the only enterprise in the semiconductor laser engraving machine industry with an annual shipme...

    2024-11-15
    Voir la traduction

  • Three core processes of laser soldering support the development of PCB electronics industry

    In the field of modern electronic manufacturing, PCB (printed circuit board) serves as the carrier of electronic components. In its manufacturing process, laser soldering technology has become a key link in PCB electronic manufacturing due to its advantages of high precision, high efficiency, and low thermal impact. This article will explore the application of laser soldering technology and its ma...

    2024-04-15
    Voir la traduction

  • Stable lasers developed with mixed materials focus on autonomous vehicle, etc

    Researchers printed microscale lenses directly onto optical fibers, allowing them to tightly combine the fibers and laser crystals into a single laser oscillator.Scientists have used 3D printing polymers in new micro optical technology, which can reduce the size of lasers and be used in various new applications, including the laser radar system for autonomous vehicle technology and cancer treatmen...

    2024-01-22
    Voir la traduction

  • Tiny yet Powerful: How Lasers on Chips Change the Game Rules of Photonics

    Chip level ultrafast mode-locked laser based on nanophotonic lithium niobate.Researchers have created a compact mode-locked laser integrated into a nanophotonic platform, capable of generating high-power and ultrafast optical pulses. The breakthrough in miniaturization of MLL technology can significantly expand the application of photonics.Innovation in mode-locked laser technologyTo improve the t...

    2023-12-27
    Voir la traduction

  • Marvel Fusion received an additional € 50 million in Series B funding

    Recently, Marvel Fusion, which focuses on developing laser fusion energy systems, announced that the company has received an additional € 50 million in Series B funding. This latest investment is provided by EQT Venture Capital and Siemens Energy, and is also the first investment of the European Innovation Council (EIC) fund in fusion energy. In addition to the 63 million euros investment announce...

    04-08
    Voir la traduction