A new type of hydrogel material developed by Brown University researchers could soon make assembling complex microfluidic or soft robotic devices as simple as putting together a LEGO set.
In mobiles, fridges, planes - transistors are everywhere. But they often operate only within a restricted current range. Ludwig-Maximilians-Universitaet (LMU) in Munich physicists have now developed an organic transistor that functions perfectly under both low and high currents.
Formamidinium lead iodide is a very good material for photovoltaic cells, but getting the correct and stable crystal structure is a challenge. The techniques developed so far have produced rather poor results. However, University of Groningen scientists, led by Professor of Photophysics and Optoelectronics Maria Antonietta Loi, have now cracked it -- using a blade and a dipping solution. The results were published in the journal Nanoscale on March 15, 2019.
Physicists at EPFL propose a new 'quantum simulator': a laser-based device that can be used to study a wide range of quantum systems. Studying it, the researchers have found that photons can behave like magnetic dipoles at temperatures close to absolute zero, following the laws of quantum mechanics. The simple simulator can be used to better understand the properties of complex materials under such extreme conditions.
Excluding the information recording and reading technology, in the next 15-20 years, the hypersensitive sensors operating under the magnetoresistive principle will be applied in an extensive number of innovative areas. Among them are biomedicine, flexible electronics, position sensors, and human-computer interaction, various types of monitoring, navigation and autonomous transport. An article about this was published in the industry journal IEEE Transactions on Magnetics.
Nanowire gurus at the National Institute of Standards and Technology have made ultraviolet light-emitting diodes (LEDs) that, thanks to a special type of shell, produce five times higher light intensity than do comparable LEDs based on a simpler shell design.
Prof. Wu Yuen's team successfully prepared a kind of catalyst which is able to significantly accelerate oxygen evolution reaction, which help human get one step further in pursuing applicable hydrogen fuel.
Direct coupling of two molecules of nitrogen: chemists from Würzburg and Frankfurt have achieved what was thought to be impossible. This new reaction is reported in Science magazine and opens new possibilities for one of the most inert molecules on earth.
University of Pennsylvania Engineers have designed a metamaterial device that can solve integral equations. The device works by encoding parameters into the properties of an incoming electromagnetic wave; once inside, the device's unique structure manipulates the wave in such a way that it exits encoded with the solution to a pre-set integral equation for that arbitrary input.
Princeton physicist Zahid Hasan led an international team of physicists who have discovered a form of chiral crystals -- crystals with an asymmetry like biological "handedness" -- that host slow light-like massless electrons. The movement of some groups of electrons in these crystals mimics the behavior of magnetic monopoles. These strange properties may be utilized for next-generation quantum, magnetic and optical technologies.