In research conducted by Cun-Zheng Ning and his ASU and Tsinghua University collaborators, a single layer of 2D material was placed on a carefully designed substrate with gold as a back-gate to control the number of electrons in the material. Another laser pumps the 2D material to create excitons, some of which form trions with the pre-existing electrons. The reflected light is monitored to find the signature of amplification. Graphic courtesy of Cun-Zheng Ning
Scientists have discovered a process of physics that enables low-power nanolasers to be produced in 2D semiconductor materials. Understanding the physics behind lasers at nanoscale and how they interact with semiconductors can have major implications for high-speed communication channels for supercomputers and data centers.
A schematic diagram of a prototype microwave air plasma thruster and the images of the bright plasma jet at different microwave powers. This device consists of a microwave power supply, an air compressor, a compressed microwave waveguide and a flame ignitor. CREDIT: Jau Tang and Jun Li
Humans depend on fossil fuels as their primary energy source, especially in transportation. However, fossil fuels are both unsustainable and unsafe, serving as the largest source of greenhouse gas emissions and leading to adverse respiratory effects and devastation due to global warming.
A team of researchers at the Institute of Technological Sciences at Wuhan University has demonstrated a prototype device that uses microwave air plasmas for jet propulsion...
UCF-developed technology will boost rocket performance.
A University of Central Florida researcher and his team have developed an advanced new rocket-propulsion system once thought to be impossible.
The system, known as a rotating detonation rocket engine, will allow upper stage rockets for space missions to become lighter, travel farther, and burn more cleanly.
The result were published this month in the journal Combustion and Flame. “The study presents, for the first time, experimental evidence of a safe and functioning hydrogen and oxygen propellant detonation in a rotating detonation rocket engine,” said Kareem Ahmed, an assistant professor in UCF’s Department of Mechanical and Aerospace Engineering who led the research.
The rotating detonations are continuous, Mach 5 expl...
A schematic and electron microscope cross-section show the structure of an integrated, solar-powered catalyst to split water into hydrogen fuel and oxygen. The module developed at Rice University can be immersed into water directly to produce fuel when exposed to sunlight. Illustration by Jia Liang
‘Artificial leaf’ concept inspires research into solar-powered fuel production. Rice University researchers have created an efficient, low-cost device that splits water to produce hydrogen fuel.
The platform developed by the Brown School of Engineering lab of Rice materials scientist Jun Lou integrates catalytic electrodes and perovskite solar cells that, when triggered by sunlight, produce electricity...
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