Researchers at Chalmers University of Technology have discovered why there is a speed limit on how fast the properties of light can be changed with the help of specially designed materials. This new understanding can point the way forward for the next generation of consumer electronics, such as smart watches, screens and glasses.
Due to residual fossil fuel emissions that would remain even with very stringent climate policies enacted from 2020 on, so-called negative emission technologies to remove carbon dioxide from the atmosphere will be necessary to comply with the 1.5°C limit.
Fig. (a) are the galvanostatic charge-discharge curves of BNAs integrated electrode at a current density of 25 μA cm-2 . The 1st, 2nd discharge capacities of BNAs integrated electrode are 2471.5, 2311.7 μAh·cm-2 (1861.8, 1741.4 mAh g-1). Fig. (b) reveals the rate capability of BNAs integrated electrode at current densities of 250, 500, 1000, 2000, 5000 μAh·cm-2 respectively. The discharge capacities are 1219, 1128, 972, 678, 430 μAh·cm-2 (918.2, 849.7, 732.2, 510.7, 323.9 mAh g-1), respectively. Fig. (c) shows the cycling stability of BNAs integrated electrodes. Reversible capacity of BNAs integrated electrodes can maintain a capacity of 410 μAh·cm-2 (308.8 mAh g-1, at a current density of 320 μAh·cm-2) after 600 cycles. When the current density was 75 μAh·cm-2, the electrode exhibits a high capacity of 600 μAh·cm-2 (451.9 mAh g-1) after 500 cycles. The above results show that the integration of active material and current collector can greatly improve the capacity, rate ability and cyclical stability of the battery.
Binghamton University, State University at New York. This is distinguished Professor Ron Miles.
A scaled-up NESMD test bed during a 2017 demonstration at NEWT, an NSF-funded engineering research center at Rice University. (Photo by Jeff Fitlow/Rice University)
Vassilis Kekatos
From left to right:
Mr. Martin Sjöstrand, CEO of Powerbox ; Mr. Masato Tanikawa, Cosel President and CEO
A digital camera mounted experimentally on a sample heliostat 'sees' the infrared light on the tower
Purdue students have conducted battery safety research that industry partners and research organizations are helping to translate into the larger batteries of naval warfare.
In the graphene film, phonons -- quantum particles that describe thermal conductivity -- can move faster in the graphene layers rather than interact between the layers, thereby leading to higher thermal conductivity.
The left figure is an example of time series of fluctuation of power generation outputs. The right figure shows the histogram of the frequency of corresponding power fluctuation. When we can assume mild fluctuation as illustrated by the red line, modeling with normal distribution is acceptable. However, wind power generation fluctuation contains abrupt changes as illustrated by the blue line. Consequently, the corresponding histogram has slowly-decaying heavy tails, which represents the extremal outliers.
Conceptual drawing of the superlattice in which spread electrons are confined to a narrow space to enhance thermoelectric conversion.
This is a sample holder inside a focus ion beam (FIB) milling microscope used to create thin foils for transmission electron microscopy (TEM) studies.
Shigenao Ishiguro, President and CEO of TDK Corporation, and Yoshiko Tanahashi, Director of Clarivate Analytics Japan
Artist's rendering of light interacting with BaTiS3 crystals.
Three new solar thermal technologies, solid (particles), liquid (molten salts), and gas (sCO2) are to be combined with a Brayton power loop to bring down costs of solar towers; the future of 24-hour solar.
Tempel Changzhou Automotive Focus Factory located in Changzhou, China.
The fabricated transceiver only measures 3 mm × 4 mm and consists of four transmitting and receiving elements. The subcomponents of TRX1 are displayed.
This image shows the positions of atoms in a ferroelectric-like metal that contains barium titanate, strontium titanate and lanthanum titanate.
Mr. Ian Templeton, 2018 Acopian Power Supply Engineering Scholarship Winner
Energetic growth. The UVM spinoff company Packetized Energy is on a roll, adding staff, customers and business partners at an impressive clip. Surrounded by full and part-time staff in the company's new offices in Chace Mill are (left to right) faculty founders Mads Almassalkhi, Jeff Frolik and Paul Hines and new company CEO Scott Johnstone. The company's clever algorithms help utilities tap the potential of renewables like solar and wind.
This is a diagram showing one-dimensional nanowires conducting waste heat to electricity.
Randomly sprinkled magnetic atoms (red arrows) on a superconducting surface may give rise to a topological superconducting phase. Inset: The onset of the topological phase is signaled by the appearance of so-called Majorana edge mode encircling the system.
