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.
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.
Researchers have developed a microscope specifically for imaging large groups of interacting cells in their natural environments. The instrument provides scientists with a new tool for imaging neurons in living animals and could provide an unprecedented view into how large networks of neurons interact during various behaviors.
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.
Inspired by the flashing colors of the neon tetra fish, researchers have developed a technique for changing the color of a material by manipulating the orientation of nanostructured columns in the material.
The method developed by Juho Karhu in his PhD thesis work is a first step towards creating a precise measuring device.
A team of researchers working at Berkeley Lab has discovered the strongest topological conductor yet, in the form of thin crystal samples that have a spiral-staircase structure. The team's result is reported in the March 20 edition of the journal Nature.
Specially designed materials enable objects of different sizes to be levitated and manipulated with light, thanks to new research from Caltech scientists.
Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
Scientists at the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences recently revealed hydroxyl super rotors from water photochemistry by using the Dalian Coherent Light Source. The researchers, under the direction of Professor YUAN Kaijun and Professor YANG Xueming, published their findings in Nature Communications.