tag: solar

Power/Performance Bits: April 17
By Jesse Allen - 17 Apr, 2018 - Comments: 0

Flexible LCDs Researchers at Donghua University and Hong Kong University of Science and Technology developed a flexible, optically rewriteable LCD for paperlike displays. The team estimates it will be cheap to produce, perhaps only costing $5 for a 5-inch screen. Optically rewriteable LCDs, like conventional LCDs, are structured like a sandwich, with a liquid crystal filling between two ... » read more

Power/Performance Bits: Mar. 13
By Jesse Allen - 13 Mar, 2018 - Comments: 0

Wireless charging Engineers at the University of Washington developed a method to safely charge a smartphone wirelessly using a laser, potentially as quickly as a standard USB cable. Safety features of the system include a reflector-based mechanism to shut off the laser and heatsinks. The charging beam is generated by a laser emitter that the team configured to produce a focused beam in the... » read more

Power/Performance Bits: Mar. 6
By Jesse Allen - 06 Mar, 2018 - Comments: 0

Neural network chip Neural networks are both slow and consume a lot of power. This made researchers at MIT examine the important aspects of the nodes within a neural network and to see how each part of the computation could be improved. The outcome was a dedicated chip that increases the speed of neural-network computations by three to seven times over its predecessors, while reducing power c... » read more

Power/Performance Bits: Feb. 20
By Jesse Allen - 20 Feb, 2018 - Comments: 0

Wireless TENG Researchers at Clemson University developed a wireless triboelectric nanogenerator, or W-TENG, that can also act as a battery-free remote. The key to triboelectric nanogenerators is using materials that are opposite in their affinity for electrons so they generate a voltage when brought in contact with each other. For the W-TENG, one electrode was constructed of a multipart... » read more

Power/Performance Bits: Jan. 30
By Jesse Allen - 30 Jan, 2018 - Comments: 0

Wavy display architecture Researchers at KAUST developed a new transistor architecture for flexible ultrahigh resolution devices aimed at boosting the performance of the display circuitry. Flat-panel displays use thin-film transistors, acting as switches, to control the electric current that activates individual pixels consisting of LEDs or liquid crystals. A higher field-effect mobility of... » read more

Power/Performance Bits: Jan. 23
By Jesse Allen - 23 Jan, 2018 - Comments: 0

Atomristors for thin memory Engineers at The University of Texas at Austin and Peking University developed a thin memory storage device with dense memory capacity. Dubbed "atomristors," the device enables 3-D integration of nanoscale memory with nanoscale transistors on the same chip. "For a long time, the consensus was that it wasn't possible to make memory devices from materials that were... » read more

Power/Performance Bits: Jan. 16
By Jesse Allen - 16 Jan, 2018 - Comments: 0

Lithium-iron-oxide battery Scientists at Northwestern University and Argonne National Laboratory developed a rechargeable lithium-iron-oxide battery that can cycle more lithium ions than its common lithium-cobalt-oxide counterpart, leading to a much higher capacity. For their battery, the team not only replaced cobalt with iron, but forced oxygen to participate in the reaction process as we... » read more

Power/Performance Bits: Jan. 9
By Jesse Allen - 09 Jan, 2018 - Comments: 0

Eel-inspired power Researchers at the University of Michigan, the University of Fribourg, and the University of California-San Diego developed soft power cells with the potential to power implanted medical devices. Made of hydrogel and salt, the soft cells form the first potentially biocompatible artificial electric organ that generates more than 100 volts at a low current, the team says, enou... » read more

Power/Performance Bits: Dec. 19
By Jesse Allen - 19 Dec, 2017 - Comments: 1

Stabilizing perovskites Scientists at EPFL and the University of Cordoba found a way to improve the stability of perovskite solar cells. While perovskites show promising efficiencies as solar cells, they are soft crystalline materials and prone to problems due to decomposition over time. By introducing the large organic cation guanidinium (CH6N3+) into methylammonium lead iodide perovskites, t... » read more

Power/Performance Bits: Dec. 12
By Jesse Allen - 12 Dec, 2017 - Comments: 0

Sunny days slow 5G 5G networks promise a world of fast wireless data speeds and connected everything.  However, researchers at Embry-Riddle Aeronautical University and King Saud University found that hot, sunny weather could degrade 5G cellular transmissions by more than 15%. The researchers focused on how solar radio emissions would affect the unlicensed 60 GHz bands, part of the millimet... » read more

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