Stable perovskite LEDs one step closer

An organic molecule makes the perovskite crystal more stable, says Heyong Wang, PhD student at the Department of Biomolecular and Organic Electronics. Researchers at Linkoping University, working with colleagues in Great Britain, China and the Czech Republic, have developed a perovskite light-emitting diode (LED) with both high efficiency and long operational stability. The result has been published in Nature Communications. "Light-emitting diodes based on perovskites are still not suffi...
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A combined optical transmitter and receiver

  The tiny unit that can both receive and transmit optical signals. Credit: Magnus Johansson Researchers at Linköping University, together with colleagues in China, have developed a tiny unit that is both an optical transmitter and a receiver. "This is highly significant for the miniaturisation of optoelectronic systems," says LiU professor Feng Gao. Chunxiong Bao, postdoc at Linköping University, types in a sentence on a computer screen, and the same sentence immediately appears on ...
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A flexible microrobot that can survive almost any deformation

The smallest self-propelled electronic microrobots developed by the researchers maneuver in liquid on top of a 1 cent euro coin. Credit: TU Chemnitz. An International research team led by Dr. Oliver Schmidt, working at Chemnitz University of Technology (TU Chemnitz) and Leibniz IFW Dresden has recently developed a microrobitic system with a wide range of possible applications, ranging from completing micro-surgeries to delivering goods to humans. This robot, presented in a paper published...
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An optically driven digital metasurface to bridge visible light and microwave communications

The proposed optically interrogated digital platform (OIDP) and its performance. a,b, Simulated electric field intensity distributions of the Ey component on the y–z plane at 5.8 GHz for the uncloaked case (a) and the cloaked case (b). c,d, Simulated intensity distributions of Ey electric field component on the y–z plane at 6.5 GHz of the metasurface (c) and target (d). e,f, Simulated 3D vortex beams with l= 1 (e) and I=−2 (f) modes at 6.5 GHz. g,h, Simulated phase distributions of Ey electric...
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Wearable biosensors may pave the way for personalized health and wellness

Penn State engineers are using computational power and data sciences to work on stretchable, flexible — and wearable — devices that could lead to innovations in the health and wellness fields. Credit: Applied Materials and Interfaces Bulky, buzzing and beeping hospital rooms demonstrate that monitoring a patient's health status is an invasive and uncomfortable process, at best, and a dangerous process, at worst. Penn State researchers want to change that and make biosensors that could make he...
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