chanelink logo
CHANELINK
Ελληνικά

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

806
2023-08-11 14:28:54
Δείτε τη μετάφραση
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
Σχετικές προτάσεις

  • Singapore MetaOptics seeks to raise funds for the development of superlenses

    MetaOptics, a 2021 startup based in Singapore with expertise in metalenses and related optical components, is aiming to raise net proceeds of S$4 million (approximately US$3.1 million) by listing on the local “Catalist” stock exchange.Targeting emerging applications in smart phones, contactless 3D biometrics modules, tiny pocket projectors, lidar sensors, and augmented and virtual reality (AR/VR) ...

    09-03
    Δείτε τη μετάφραση

  • Hyperspectral imaging technology: a comprehensive guide from principles to applications

    Hyperspectral imaging technology is a highly anticipated innovation in the field of science and engineering today. It not only integrates spectroscopy and imaging technology, but also has wide applications in various industries and research fields. This article will delve into the basic principles, working mechanisms, and applications of hyperspectral imaging in different fields.Introduction to hy...

    2024-04-16
    Δείτε τη μετάφραση

  • Shanghai Optical Machine has made progress in frequency shift of even harmonic of single layer MoS2

    Recently, the research team of the State Key Laboratory of High-Field Laser Physics at the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences has made progress in using high-field lasers to drive the even harmonic frequency shift of single-layer MoS2. The results were published in Optics Express under the title "Frequency shift of even-order high harmonic generation...

    2023-09-07
    Δείτε τη μετάφραση

  • Osram's new laser headlights "Yutianba" are unveiled

    Recently, OSRAM, a well-known global automotive lighting brand, announced the launch of its modified new laser headlights - the Yutianba laser headlights. Laser headlights were once regarded by many car companies as the "successor" of LED headlights, and German century old automotive lighting expert Osram is precisely the pioneer of laser light sources for automotive headlights. Since the 2014 BMW...

    2024-05-06
    Δείτε τη μετάφραση

  • The new chip opens the door to artificial intelligence computing at the speed of light

    Engineers at the University of Pennsylvania have developed a new chip that uses light waves instead of electricity to perform complex mathematical operations necessary for training artificial intelligence. This chip has the potential to fundamentally accelerate the processing speed of computers while reducing their energy consumption.The design of a silicon photonic chip was the first to combine t...

    2024-02-18
    Δείτε τη μετάφραση