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.

164
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

  • The LANL laboratory in the United States uses quantum light emitters to generate single photon light sources

    Recently, the Los Alamos National Laboratory (LANL) in the United States has developed a method for quantum light emitters, which stacks two different atomic thin materials together to achieve a light source that generates circularly polarized single photon streams. These light sources can also be used for various quantum information and communication applications.According to Han Htoon, a researc...

    2023-09-01
    Δείτε τη μετάφραση

  • 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
    Δείτε τη μετάφραση

  • Artists transform paper into meticulous laser cutting designs

    In the past few years, paper artists have demonstrated the versatility of their common fiber materials. Some people manually cut or carve paper, while others combine traditional craftsmanship with digital design. Ibbini Studio is in this situation. Abu Dhabi artist Julia Ibni collaborated with computer scientist Stephen Noye to create sculptural paper works inspired by decorative patterns such as ...

    2024-01-23
    Δείτε τη μετάφραση

  • Global manufacturer JQ Laser launches a new fully automatic pipe laser cutting machine equipped with a fully automatic feeding device

    JQ LASER, a global manufacturer specializing in laser cutting machines, has launched a new fully automatic pipeline laser cutting machine model T120A.According to JQ LASER's report on the 16th, the body of this new product adopts a vertical rather than horizontal design, reducing the machining center and improving stability.In the past, traditional double chuck pipe cutting machines had a fixed fr...

    2023-10-18
    Δείτε τη μετάφραση

  • Accelerating electrons by emitting laser light into a nanophotonic cavity

    The laser driven particle accelerator on silicon chips was created by two independent research groups. With further improvements, this dielectric laser accelerator can be used in medicine and industry, and even in high-energy particle physics experiments.Accelerating electrons to high energy is usually accomplished over long distances in large and expensive facilities. For example, the electron ac...

    2023-10-28
    Δείτε τη μετάφραση