- No Data
English
- English
- 简体中文
- 繁体中文
- Français
- Русский
- Italiano
- 日本語
- 한국어
- Português
- Deutsch
- Español
- Türkçe
- Ελληνικά
- Nederlands
- Tiếng Việt
- Polski
Due to advances in materials science by Stockholm researchers, changing the shape during flight to better handle airflow passing through its aircraft wings may be imminent. The trick involves the melting and drilling capabilities of lasers.
Researchers from KTH Royal Institute of Technology in Stockholm, Sweden conducted experiments on paraffin. Using the 2D version of the material, they were able to use a laser to poke small holes in the wax and slowly melt it to guide the liquid paraffin to the desired position, thanks to the tilting stage. The effect is laser-induced shape changes that occur during several cycles of laser pulses and tilt of the stage.
"In each cycle, everything only moves by a few tens of micrometers," said co-author Wuter van der Wijngaart of the study. It can reshape objects, allowing them to pass through narrow gaps and reassemble them into any target shape. This allows for unrestricted real-time creation of tools and other objects without the need to introduce additional materials.
Although this breakthrough was achieved using 2D materials, researchers suggest that these findings will be translated into 3D materials. They say such breakthroughs may lead to aircraft wings being able to self modify to optimize drag, cars becoming more aerodynamic in flight, and even creating office spaces with on-demand seats.
In this study, the process of material remodeling is called phase change pumping.
"By melting a portion of an object with a hot spot, a liquid region is formed inside the material," the researchers explained in a research report published in the journal Advanced Functional Materials.
They added, "The movement of hot spots inside an object generates a melting front, and the laser heats the material above the melting point and freezes the front, causing heat loss to the surrounding environment and cooling the material below the freezing point." Most materials have a decrease in density during the melting process, and an increase in density during the freezing process, causing the material to flow from the melting front to the liquid region at the freezing front. "
Although the experiments involved in this specific study introduce laser heat into the external environment, researchers suggest that embedding a heat source in the material may lead to more automated shape transformation in practical applications.
Source: Laser Net
The well-known journal Optica published a paper in November 2024 titled "Near complete extraction of maximum stored energy from large core fibers using coherent pulse stacking amplification of femtosecond pulses"The authors of the paper were the University of Michigan, Lawrence Berkeley National Laboratory, Peking University, and the German Institute of Synchrotron Radiation.The specific technique...
Researchers at Rensselaer Institute of Technology have developed a device that operates at room temperature, which is the first topological quantum simulator to operate under strong light matter interaction mechanisms, making high-tech research easier in cutting-edge ways.Researchers at Rensselaer Institute of Technology have developed a device no larger than human hair, which will enable physicis...
Cinemas are in a developmental stage. Their roles are changing and the rules are being rewritten. Many people have proposed a way to make cinemas a truly unique place by providing audiences with a higher quality experience. It is along this route that UCI Cinemas continues to move forward. In recent days, it has officially launched a 4K laser projector and had a special date with the new MCU movie...
RIKEN's two physicists have achieved extremely short laser pulses with a peak power of 6 terawatts (6 trillion watts) - roughly equivalent to the power generated by 6000 nuclear power plants. This achievement will contribute to the further development of attosecond lasers, for which three researchers were awarded the Nobel Prize in Physics in 2023. This study was published in the journal Nature Ph...
Recently, a new laser heating technology developed by a Japanese research group has paved the way for advanced optical communication equipment by integrating transparent magnetic materials into optical circuits.This breakthrough was recently published in the journal Optical Materials. It is crucial for integrating magneto-optical materials and optical circuits, which has been a significant long-te...