Results 181 - 192 of 192.
Materials Science - Physics - 07.02.2019
Unleashing perovskites’ potential for solar cells
New results show how varying the recipe could bring these materials closer to commercialization. Perovskites - a broad category of compounds that share a certain crystal structure - have attracted a great deal of attention as potential new solar-cell materials because of their low cost, flexibility, and relatively easy manufacturing process.
Materials Science - Health - 07.02.2019
How safe is graphene?
Graphene is considered one of the most interesting and versatile materials of our time. The application possibilities inspire both research and industry. But are products containing graphene also safe for humans and the environment? A comprehensive review, developed as part of the European graphene flagship project with the participation of Empa researchers, investigated this question.
Chemistry - Materials Science - 06.02.2019
Offers First Complete Picture of Lithium-Ion Battery Performance
By Ali Sundermier Note: This article was adapted from an original press release published by SLAC National Accelerator Laboratory. View the original release. One issue plaguing today's commercial battery materials is that they are only able to release about half of the lithium ions they contain. A promising solution is to cram cathodes with extra lithium ions, allowing them to store more energy in the same amount of space.
Materials Science - 31.01.2019
New Materials Exhibit Split Personality
What's the discovery? Julia Greer , professor of materials science, mechanics and medical engineering in Caltech's Division of Engineering and Applied Science, creates materials out of microand nano-scale building blocks that are arranged into sophisticated architectures that can be periodic, like a lattice, or arbitrary.
Electroengineering - Materials Science - 28.01.2019
Converting Wi-Fi signals to electricity with new 2-D materials
Device made from flexible, inexpensive materials could power large-area electronics, wearables, medical devices, and more. Imagine a world where smartphones, laptops, wearables, and other electronics are powered without batteries. Researchers from MIT and elsewhere have taken a step in that direction, with the first fully flexible device that can convert energy from Wi-Fi signals into electricity that could power electronics.
Materials Science - Transport - 24.01.2019
Nanotechnology enables engineers to weld previously un-weldable aluminum alloy
Super-strong but lightweight, AA 7075 now could be more widely used in automobiles and other manufacturing thanks to UCLA research Matthew Chin An aluminum alloy developed in the 1940s has long held promise for use in automobile manufacturing, except for one key obstacle. Although it's nearly as strong as steel and just one-third the weight, it is almost impossible to weld together using the technique commonly used to assemble body panels or engine parts.
Materials Science - 22.01.2019
Fireproofing made of recycled paper
Scientists at Empa teamed up with isofloc AG to develop an insulating material made of recycled paper. It is ideal for prefabricated wooden elements and even multistory timber houses, and protects the construction against fire. What's more: The additive it contains is harmless to humans, animals and the environment.
Materials Science - Innovation - 17.01.2019
Smart fabrics made possible by new metal deposition technique
Researchers have devised a way to deposit metals onto fabrics and used it to insert sensors and batteries into these materials. A multidisciplinary team of researchers from Imperial College London led by Dr Firat Güder from the Department of Bioengineering have developed an innovative technique to print metals such as silver, gold and platinum onto natural fabrics.
Materials Science - 16.01.2019
Say ’bye bye’ to faulty mobile phones and solar cells
Faulty mobile phones and solar cells could soon be a thing of the past thanks to a ground-breaking invention developed at The Australian National University (ANU). Engineers have developed a powerful new tool to help manufacturers spot defects or unwanted features in everyday technology - such as mobile phones, batteries and solar cells - more easily and much earlier in the fabrication process.
Materials Science - Health - 16.01.2019
Mechanism helps explain the ear’s exquisite sensitivity
A critical gel-like structure in the inner ear moves according to a sound's frequency, researchers find. The human ear, like those of other mammals, is so extraordinarily sensitive that it can detect sound-wave-induced vibrations of the eardrum that move by less than the width of an atom. Now, researchers at MIT have discovered important new details of how the ear achieves this amazing ability to pick up faint sounds.
Materials Science - 08.01.2019
Rare metals from e-waste
This year, beautifully wrapped laptops, mobile phones or even new TV sets lay under numerous Christmas trees. They are enthusiastically put into use - and the old electronic devices are disposed of. The e-waste contains resources such as neodymium, indium and gold. What happens to the valuable materials' And how much rare metal is contained in mobile phones, computers and monitors that are still in use today? Empa researchers have investigated these questions.
Physics - Materials Science - 04.01.2019
Excitons pave the way to more efficient electronics
After developing a method to control exciton flows at room temperature, EPFL scientists have discovered new properties of these quasiparticles that can lead to more energy-efficient electronic devices. They were the first to control exciton flows at room temperature. And now, the team of scientists from EPFL's Laboratory of Nanoscale Electronics and Structures (LANES) has taken their technology one step further.