Physics

Rumors of inflationary theory's demise premature, researchers say

From the earliest human civilizations, people have looked to the heavens and pondered the origins of the stars and constellations above. Once, those stories involved gods and magical beings. Now, there's science, and a large research enterprise focused on understanding how the universe came to be.

The presence of 'rich clubs' is a matter of distance in networks

Recent research has revealed that during growth/evolution of networks, the emergence of "rich clubs," which are formed by high-degree hubs that are interconnected to each other more densely than expected, can be simply a matter of distance. The members of the club can easily utilize each other's spread-out system of connections.

New model of plasma stability could help researchers predict and avoid disruptions

Physicists have helped develop a new computer model of plasma stability in doughnut-shaped fusion machines known as tokamaks. The new model incorporates recent findings gathered from related research efforts and simplifies the physics involved so computers can process the program more quickly. The model could help scientists predict when a plasma might become unstable and then avoid the underlying conditions.

Sound over silicon: Computing's wave of the future

With a combined $1.8 million from the W.M. Keck Foundation and the University of Arizona, materials science and engineering professor Pierre Deymier explores building a quantum computer that uses sound instead of quantum particles to process information.

Honeywell and NASA Fuse Hip-Hop and Physics to Inspire Middle School Students

Honeywell and NASA are bringing FMA Live! Forces in Motion, an award-winning hip-hop educational experience, to middle school students along the east coast this spring.

Honeywell and NASA Fuse Hip-Hop and Physics to Inspire Middle School Students

Honeywell and NASA are bringing FMA Live! Forces in Motion, an award-winning hip-hop educational experience, to middle school students along the east coast this spring.

Exploring the conversion of heat to electricity in single molecules

Researchers have investigated the influence of the geometry of single-molecule devices on their ability to produce electricity from heat. They fabricated devices consisting of a single molecule bridging gold electrodes and measured device electrical conductance and thermovoltage simultaneously. The devices with thiol-gold contacts displayed the highest thermovoltage when the gold-thiol bond was stretched, revealing that the thermoelectric performance of single-molecule devices can be modulated through geometry control.

Physicists find a way to control charged molecules -- with quantum logic

Physicists have solved the seemingly intractable puzzle of how to control the quantum properties of individual charged molecules, or molecular ions. The solution is to use the same kind of 'quantum logic' that drives an experimental NIST atomic clock.

Three-dimensional direction-dependent force measurement at the subatomic scale

Scientists have developed a new atomic force microscopy (AFM) technique that can measure the three-dimensional force fields of atoms. In their technique, the precisely controlled tip of a mechanical arm is moved over a material surface at two different frequencies to provide information about the material surface in both vertical and parallel directions. This AFM technique will expand understanding of the structure and physical properties of material surfaces at the subatomic scale.

Research from Samsung explores the possibilities of using everyday movement to support motion-powered TENG devices

Triboelectric nanogenerators (TENGs) are small devices that convert movement into electricity, and might just be what bring us into an era of energy-harvesting clothes and implants. But could TENGs, even theoretically, give us wearable electronics powered solely by the wearer's day-to-day body motion?

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