A new material with light absorption characteristics ideally suited for making chemical fuels from sunlight was created via a nanowire growth strategy that fused the semiconductors silicon (Si) and gallium arsenide (GaAs) ...
Materials Science
Jun 1, 2015
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7
It is obvious from the data of the KASCADE-Grande experiment at the Karlsruhe Institute of Technology (KIT) that the so-called "knee" of the cosmic rays, a bend in the energy spectrum at high energies, is located at different ...
Astronomy
May 9, 2013
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0
Near-infrared spectroscopy provides absorption spectrum unique to substances so that discrimination of gas species becomes possible. Miniaturization of spectrometers is thus required to realize compact gas sensors for monitoring ...
Optics & Photonics
Mar 11, 2020
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6
A revolutionary type of personal power pack now in development could help our troops when they are engaged on the battlefield.
Energy & Green Tech
Mar 14, 2011
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Photocatalytic water splitting, a sustainable energy strategy, utilizes solar energy to produce clean hydrogen fuel. While it offers a promising solution to the global energy crisis and environmental pollution, the slow kinetics ...
Analytical Chemistry
Jun 11, 2024
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9
It is now technically possible to hold groups of atoms at temperatures that are only a few hundredths of a degree above absolute zero. This so-called 'ultracold gas' loaded in an optical lattice is an extremely powerful platform ...
Quantum Physics
Feb 5, 2020
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16
When studying the solar spectrum, researchers often search for specific emission lines: prominent wavelengths emitted by ions as their electrons transition from higher to lower energy levels. Emission spectra of two iron ...
Astronomy
Aug 2, 2024
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29
An international team led by Dr. Yuan Feng from Shanghai Astronomical Observatory of the Chinese Academy of Sciences has investigated the validity of the two main models of black hole jets by calculating the radiation predicted ...
Astronomy
Mar 25, 2024
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38
Auger electron spectroscopy (AES) is an incredibly useful technique for probing material samples—but current assumptions about the process ignore some of the key time-dependent effects it involves. So far, this has resulted ...
General Physics
Feb 15, 2024
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5
The Large High Altitude Air Shower Observatory (LHAASO) officially released the precise measurements of high-energy gamma radiation from the W51 complex, confirming it as a cosmic-ray accelerator boosting particles up to ...
Astronomy
Aug 29, 2024
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