العلوم والبيئة
Lightsaber-like plasma antenna uses laser-ionized air to transmit radio waves
المصدر: Phys.org - latest science and technology news stories · نُشر
Researchers have demonstrated a technique that uses a laser to produce a plasma beam antenna capable of transmitting radio waves. The article, "Laser-Induced-Plasma-Filament Antenna Transmitting 30 MHz VHF," is published in the IEEE Journal of Microwaves.
Researchers have demonstrated a technique that uses a laser to produce a plasma beam antenna capable of transmitting radio waves. The article, "Laser-Induced-Plasma-Filament Antenna Transmitting 30 MHz VHF," is published in the IEEE Journal of Microwaves.
أخبار ذات صلة
Heat-induced nanoscale structures unlock electromechanical properties in ceramics
Scientists have developed a new way to make ceramic materials that can better withstand extreme heat and continue performing reliably in sensors and actuators. The approach creates tiny structures throughout the material that give it new electrical and mechanical properties.
Phys.org - latest science and technology news stories ·
Scientists discover a human brain gene that can jump through DNA
Scientists have discovered a human gene with a remarkable double life: it appears to play an important role in brain cells while still retaining the ability to jump around the genome. Called BC200, the gene evolved millions of years ago from a mobile piece of DNA known as a trans
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Scientists just found a new way to make hydrogen from water
A new light-activated material can efficiently produce hydrogen from water without requiring an additional expensive metal catalyst. Researchers say its unusual sulfur-based chemistry could point toward cheaper and more practical ways to turn sunlight into clean fuel.
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Scientists just made a superconductor stronger using “empty space”
Researchers have demonstrated that quantum fluctuations in supposedly empty space can strengthen superconductivity, raising the transition temperature of an ultrathin material by as much as 5.4%. The discovery opens the possibility of using specially engineered vacuum environment
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Scientists find an “earthquake gate” as California fault stress hits a 1,000-year high
Researchers say stress on Southern California’s San Andreas and San Jacinto faults has reached some of the highest levels seen in a 1,000-year simulation. Because both faults are highly stressed at the same time, the Cajon Pass junction may be increasingly primed for a rupture th
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