Microfluidics technology enables silk protein capsules to self-assemble
Researchers have made the first direct visual observation and measurement of ultra-fast vortex dynamics in superconductors. Their technique, detailed in the journal Nature Communications, could contribute to the development of novel practical applications by optimizing superconductor properties for use in electronics. In photos and videos shown for the first time, the vortices are moving at velocities much faster than previously thought possible -- up to about 72,000 km/hr (45,000 mph).
Under certain conditions, the magnetic properties of a material can predict the relationship between its elasticity and temperature, a University of Nebraska-Lincoln physicist has found. Given the ease with which magnetic fields can be manipulated, the study hints that elasticity could someday be tailored with the press of a button or turn of a knob.
Researchers have found a recipe for discovering new topological materials, which have exotic electronic properties that hold promise for future technologies. Until now, finding these materials has been a matter of trial and error.
Professor WU Wenbin's group from University of Science and Technology of China of Chinese Academy of Sciences made a breakthrough to solve the 'dead layer' effect problem.
The fiber samples obtained by researchers have demonstrated great results, indicating good prospects for further development of such technological solutions. They will find use not only in laser systems but also in optical fiber sensors, where the change of polarization characteristics is known in advance, since they are determined by external environmental factors, such as temperature, pressure, biological and other impurities. Besides, they have a number of advantages over semiconductor sensors.
Fluorination of hexagonal boron nitride, a common insulator, turns it into a magnetic semiconductor. That may make the heat-resistant material suitable for electronics and sensors in extreme environments.
Transistors, as used in billions on every computer chip, are nowadays based on semiconductor-type materials, usually silicon. As the demands for computer chips in laptops, tablets and smartphones continue to rise, new possibilities are being sought out to fabricate them inexpensively, energy-saving and flexibly. The group led by Dr. Christian Klinke has now succeeded in producing transistors based on a completely different principle.
When it comes to efficiency, sometimes it helps to look to Mother Nature for advice -- even in technology as advanced as printable, flexible electronics. Researchers at the University of Illinois have developed bio-inspired dynamic templates used to manufacture organic semiconductor materials that produce printable electronics. It uses a process similar to biomineralization -- the way that bones and teeth form. This technique is eco-friendly, which gives the researchers the chance to return the favor to nature.
The concept of a simple technique to remove thin layers from otherwise thick, rigid semiconductor crystals has been actively explored for years. In a significant advance, a research group from IBM successfully applied their new 'controlled spalling' layer transfer technique to gallium nitride (GaN) crystals, a prevalent semiconductor material, and created a pathway for producing many layers from a single substrate. They report their work in this week's Journal of Applied Physics.