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News articles about "Quantum"

Negative temperature negated

Negative temperature
Over the past 60 years several theories and experiments have claimed the existence of negative absolute temperatures in certain quantum systems This fuelled speculations about hyper efficient heat engines that could act as perpetual motion ... - Read More

Ways of the photoelectric effect; How physicists have learned how to select them

In contrast to its apparent simplicity that brought Einstein his Nobel Prize the photoelectric effect when an electron is knocked out from its parent atom by a photon is quite complicated to analyze in general ... - Read More

Small size enhances charge transfer in quantum dots

Quantum dots
Quantum dots tiny semiconductor crystals with diameters measured in billionths of a meter have enormous potential for applications that make use of their ability to absorb or emit light and or electric charges Examples include ... - Read More

Cellulose nanocrystals possible 'green' wonder material

Cellulose, Green, nanocrystals
The same tiny cellulose crystals that give trees and plants their high strength light weight and resilience have now been shown to have the stiffness of steel The nanocrystals might be used to create a ... - Read More

Low-power tunneling transistor for high-performance devices at low voltage

Applications
A new type of transistor that could make possible fast and low power computing devices for energy constrained applications such as smart sensor networks implantable medical electronics and ultra mobile computing is feasible according to ... - Read More

Revolutionizing solar energy: Quantum waves found at the heart of organic solar cells

Solar energy
Researchers have been able to tune ‘coherence’ in organic nanostructures due to the surprise discovery of wavelike electrons in organic materials revealing the key to generating “long lived charges” in organic solar cells material that ... - Read More

A stopwatch for electron flashes: duration of energetic electron pulses measured using laser fields

Electron, Electron, Electron
A stopwatch made of light can determine the duration of extremely brief electron flashes Teams based in the Laboratory for Attosecond Physics LAP at LMU and at the Max Planck Institute of Quantum Optics have ... - Read More

Scientists offer new insights on controlling nanoparticle stability

University of Oregon chemists studying the structure of ligand stabilized gold nanoparticles have captured fundamental new insights about their stability The information they say could help to maintain a desired integral property in nanoparticles used ... - Read More

Coal yields plenty of graphene quantum dots

Coal, Quantum dots
The prospect of turning coal into fluorescent particles may sound too good to be true but the possibility exists thanks to scientists at Rice University The Rice lab of chemist James Tour found simple methods ... - Read More

Quantum effects help cells capture light, but the details are obscure

Sophisticated recent experiments with ultrashort laser pulses support the idea that intuition defying quantum interactions between molecules help plants algae and some bacteria efficiently gather light to fuel their growth But key details of nature's ... - Read More

World's highest quantum efficiency UV photodetectors created

Quantum, Quantum
Researchers from Northwestern University's McCormick School of Engineering and Applied Science have developed the world's highest quantum efficiency ultraviolet UV photodetector an advance in technology that could aid in the detection of missiles and chemical ... - Read More

Three-dimensional view helps laser in building new molecules

Building, molecules
Scientists have developed a new feedback method for optimizing the laser pulse shapes used in the control of chemical reactions In many ways traditional chemical synthesis is similar to cooking To alter the final product ... - Read More

Researchers create nonlinear light-generating zero-index metamaterial

Light, Light
The Information Age will get a major upgrade with the arrival of quantum processors many times faster and more powerful than today's supercomputers For the benefits of this new Information Age 2.0 to be fully ... - Read More

DNA helicity, elasticity explained on nanoscale

A simple mechanical model to effectively implement the well known double stranded structure and the elasticity of DNA on a nano meter scale has been developed by Jae Hyung Jeon and Wokyung Sung of Pohang ... - Read More

Intense two-color double X-ray laser pulses: Powerful tool to study ultrafast processes

X-ray
A team working at the SACLA X ray Free Electron Laser XFEL in Japan has succeeded in generating ultra bright two color X ray laser pulses for the first time in the hard X ray ... - Read More

'Spooky action' builds a wormhole between 'entangled' quantum particles

Quantum, Quantum
Quantum entanglement a perplexing phenomenon of quantum mechanics that Albert Einstein once referred to as spooky action at a distance could be even spookier than Einstein perceived Physicists at the University of Washington and Stony ... - Read More

New simulatable model displaying exotic quantum phenomena

Quantum, Quantum
It is fascinating how quantum mechanical behavior of particles at smallest scales can give rise to strange properties that can be observed in the classical world One example is the Fractional Quantum Hall Effect FQH ... - Read More

How losing information can benefit quantum computing

Quantum, Quantum
Suggesting that quantum computers might benefit from losing some data physicists at the National Institute of Standards and Technology NIST have entangled linked the quantum properties of two ions by leaking judiciously chosen information to ... - Read More

Flashes of brilliance: Roots of superfluorescent bursts from quantum wells discovered

Quantum, Quantum
Spontaneous bursts of light from a solid block illuminate the unusual way interacting quantum particles behave when they are driven far from equilibrium The discovery by Rice University scientists of a way to trigger these ... - Read More

Ultra-sensitive force sensing with levitating nanoparticle

Nanoparticle, Nanoparticle
A recent study led by researchers of the Institute of Photonic Sciences ICFO achieved the highest force sensitivity ever observed with a nano mechanical resonator The scientific results of this study have been published in ... - Read More
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