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In a lab at the University of Washington, robots are playing air hockey.
Or they’re solving Rubik’s Cubes, mastering chess or painting the next Mona Lisa with a single laser beam.
A German research team has developed a tandem solar cell that reaches 24 percent efficiency – measured according to the fraction of photons converted into electricity (i.e. electrons). This sets a new world record as the highest efficiency achieved so far with this combination of organic and perovskite-based absorbers. The solar cell was developed by Professor Dr. Thomas Riedl’s group at the University of Wuppertal together with researchers from the Institute of Physical Chemistry at the University of Cologne and other project partners from the Universities of Potsdam and Tübingen as well as the Helmholtz-Zentrum Berlin and the Max-Planck-Institut für Eisenforschng in Düsseldorf. The results have been published today (April 13, 2022) in Nature under the title “Perovskite/organic tandem solar cells with indium oxide interconnect.”
Conventional solar cell technologies are predominantly based on the semiconductor silicon and are now considered to be “as good as it gets.” Significant improvements in their efficiency – i.e., more watts of electrical power per watt of solar radiation collected – can hardly be expected. That makes it all the more necessary to develop new solar technologies that can make a decisive contribution to the energy transition. Two such alternative absorber materials have been combined in this work. Here, organic semiconductors were used, which are carbon-based compounds that can conduct electricity under certain conditions. These were paired with a perovskite, based on a lead-halogen compound, with excellent semiconducting properties. Both of these technologies require significantly less material and energy for their production compared to conventional silicon cells, making it possible to make solar cells even more sustainable.
JERUSALEM — Israel’s new laser missile defense system has successfully intercepted mortars, rockets and anti-tank missiles in recent tests, Defense Minister Benny Gantz said Thursday.
The Israeli-made laser system, designed to complement a series of aerial defense systems such as the costly Iron Dome deployed by Israel, will be operational “as soon as possible,” Gantz said.
The goal is to deploy the laser systems around Israel’s borders over the next decade, Gantz added. The tests took place last month in the Negev Desert.
https://www.youtube.com/watch?v=T_6cLgAXhA0
This fish-friendly hydro turbine turns streams, rivers into a zero-emissions power plant.
Credit: Natel Energy.
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The first experimental evidence to validate a newly published universal law that provides insights into the complex energy states for liquids has been.
Sending miniature robots deep inside the human skull to treat brain disorders has long been the stuff of science fiction—but it could soon become reality, according to a California start-up.
During an Office of Naval Research (ONR) test, an all-electric, high-energy laser weapon was used to defeat a target representing a subsonic cruise missile in flight. The Layered Laser Defense (LLD) weapon was designed and built by Lockheed Martin to serve as a multi-domain, multi-platform demonstration system.
Lutetium-149 undergoes a rare type of radioactive decay.
A newly created isotope of the silvery metal lutetium has a strange squashed nucleus and a half-life of just a few hundred nanoseconds.
Neuroscientists from St. Petersburg University, led by Professor Allan V. Kalueff, in collaboration with an international team of IT specialists, have become the first in the world to apply the artificial intelligence (AI) algorithms to phenotype zebrafish psychoactive drug responses. They managed to train AI to determine—by fish response—which psychotropic agents were used in the experiment.
The research findings are published in the journal Progress in Neuro-Psychopharmacology and Biological Psychiatry.
The zebrafish (Danio rerio) is a freshwater bony fish that is presently the second-most (after mice) used model organism in biomedical research. The advantages for utilizing zebrafish as a model biological system are numerous, including low maintenance costs and high genetic and physiological similarity to humans. Zebrafish share 70% of genes with us. Furthermore, the simplicity of the zebrafish nervous system enables researchers to achieve more explicit and accurate results, as compared to studies with more complex organisms.
A new study, led by researchers from the University of California, Irvine, identifies a reason for why older adults are significantly more susceptible.
Small clinical trial suggests new, simple twist on cell therapies for cancer.
