How to propel a spacecraft without propellant? Use electrodynamic tethers. These are long, strong conductors connecting two spacecraft. When direct current is applied to the tether, the tether exerts a force on the spacecraft, ...
Space Exploration
6 hours ago
0
4
A class of materials that once looked as if it might revolutionize everything from solar cells to frying pans—but fell out of favor in the early 2000s—could be poised for commercial resurrection, findings from a University ...
Materials Science
Oct 11, 2021
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1563
Researchers have utilized two-dimensional hybrid metal halides in a device that allows directional control of terahertz radiation generated by a spintronic scheme. The device has better signal efficiency than conventional ...
General Physics
Oct 02, 2021
1
385
Perovskite solar cells are in many ways already as efficient as conventional crystalline silicon-based solar cells; perovskite has the added benefit of being much more cost-effective than its silicon counterpart. Perovskites ...
Condensed Matter
Sep 27, 2021
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30
Skoltech researchers and their colleagues have synthesized a new conjugated polymer for organic electronics using two different chemical reactions and shown the impact of the two methods on its performance in organic and ...
Polymers
Sep 15, 2021
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10
A team of researchers led by Professor Yabing Qi in the Energy Materials and Surface Sciences Unit at the Okinawa Institute of Science and Technology Graduate University (OIST) in Japan have imaged the atoms at the surface ...
Materials Science
Sep 10, 2021
1
134
The latest generations of computer chips are only a few nanometres in size and are becoming ever more energy-saving and powerful as a result of progressive miniaturization. Since the etching processes traditionally used in ...
Nanomaterials
Sep 09, 2021
0
31
The power conversion efficiency (PCE) of single-junction perovskite solar cells (PSCs) has increased remarkably from 3.8% to 25.2% in just a decade. As the rapid development of PCE has been approaching the limit of its theoretical ...
Materials Science
Sep 06, 2021
0
12
There's no need to don uncomfortable smartwatches or chest straps to monitor your heart if your comfy shirt can do a better job.
Bio & Medicine
Aug 30, 2021
1
822
Owing to high quantum yields, large absorption cross-section, excellent carrier transport performance and narrow-band emission, inorganic lead-halide perovskite semiconductors have received increasing attention for their ...
Nanomaterials
Aug 30, 2021
0
8
A solar cell or photovoltaic cell is a device that converts light directly into electricity by the photovoltaic effect. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight, while the term photovoltaic cell is used when the light source is unspecified. Assemblies of cells are used to make solar panels, solar modules, or photovoltaic arrays. Photovoltaics is the field of technology and research related to the application of solar cells in producing electricity for practical use. The energy generated this way is an example of solar energy (also called solar power).
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