Home / Tag Archives: physics (page 15)

Tag Archives: physics

Feed Subscription

Flipping a light switch in the cell: Quantum dots used for targeted neural activation

By harnessing quantum dots—tiny light-emitting semiconductor particles a few billionths of a meter across—researchers at the University of Washington (UW) have developed a new and vastly more targeted way to stimulate neurons in the brain. Being able to switch neurons on and off and monitor how they communicate with one another is crucial for understanding—and, ultimately, treating—a host of brain disorders, including Parkinson's disease, Alzheimer's, and even psychiatric disorders such as severe depression. The research was published today in the Optical Society's (OSA) open-access journal Biomedical Optics Express.

Read More »

Dutch team has solution for troubled ITER nuclear fusion reactor

(PhysOrg.com) -- The superconducting cables designed for the ITER fusion reactor (cost: 16 billion euros = $21.2 billion) are unable to withstand the planned forty to sixty thousand charge cycles. Barring a solution, the troubled mega-experiment will suffer still more delays and cost overruns.

Read More »

Unusual ‘collapsing’ iron superconductor sets record for its class

(PhysOrg.com) -- A team from the National Institute of Standards and Technology and the University of Maryland has found an iron-based superconductor that operates at the highest known temperature for a material in its class. The discovery inches iron-based superconductors—valued for their ease of manufacturability and other properties—closer to being useful in many practical applications.

Read More »

Quantum physicist explains $100K offer for proof scaled-up quantum computing is impossible

(PhysOrg.com) -- MIT researcher Scott Aaronson has certainly riled the physics community with his offer this past Friday, of $100,000 to anyone who can prove that scaled-up quantum computing is impossible. His original reason for doing so was, as he describes in his blog, due to adding his two cents to an argument between skeptic Gil Kalai and researcher Aram Harrow about assumptions regarding the Quantum Fault-Tolerance Theorem, on another blog, where he argued that refuting the idea of scalable quantum computing would amount to more than just taking apart the QFT Theorem; it would he suggested, mean coming up with a new version of physical reality.

Read More »

Physicists ‘record’ magnetic breakthrough

An international team of scientists has demonstrated a revolutionary new way of magnetic recording which will allow information to be processed hundreds of times faster than by current hard drive technology.

Read More »

Diamond light, brighter than the sun

It’s the size of five football pitches and generates light 10 billion times brighter than the sun. As the Diamond Light Source celebrates its tenth anniversary this year, Penny Bailey visits one of the UK’s biggest scientific investments to see how it works.

Read More »

With single laser pulses on single molecules

(PhysOrg.com) -- Physicists at MPQ (Max Planck Institute) succeed in resolving the internal dynamics of individual molecules using UV femtosecond laser pulses.

Read More »

Progress and promise in DIAL LIDAR

For climatologists and environmental policy makers who need to determine the flux of greenhouse gases (GHG), there are three paramount questions: Where is it, how much is there, and how is it moving? A new measurement approach is being developed and tested by a PML research team and NIST colleagues that may provide answers of unprecedented accuracy to all three.

Read More »

A quantum connection between light and motion

(PhysOrg.com) -- Physicists have demonstrated a system in which light is used to control the motion of an object that is large enough to be seen with the naked eye at the level where quantum mechanics governs its behavior.

Read More »

Crystalline materials enable high-speed electronic function in optical fibers

Scientists at the University of Southampton, in collaboration with Penn State University have, for the first time, embedded the high level of performance normally associated with chip-based semiconductors into an optical fibre, creating high-speed optoelectronic function.

Read More »

Crystalline materials enable high-speed electronic function in optical fibers

Scientists at the University of Southampton, in collaboration with Penn State University have, for the first time, embedded the high level of performance normally associated with chip-based semiconductors into an optical fibre, creating high-speed optoelectronic function.

Read More »

Renowned physicist invents microscope that can peer at living brain cells

(PhysOrg.com) -- Ever since scientists began studying the brain, they’ve wanted to get a better look at what was going on. Researchers have poked and prodded and looked at dead cells under electron microscopes, but never before have they been able to get high resolution microscopic views of actual living brain cells as they function inside of a living animal. Now, thanks to work by physicist Stefan Hell and his colleagues at the Max Planck Institute in Germany, that dream is realized.

Read More »

Renowned physicist invents microscope that can peer at living brain cells

(PhysOrg.com) -- Ever since scientists began studying the brain, they’ve wanted to get a better look at what was going on. Researchers have poked and prodded and looked at dead cells under electron microscopes, but never before have they been able to get high resolution microscopic views of actual living brain cells as they function inside of a living animal. Now, thanks to work by physicist Stefan Hell and his colleagues at the Max Planck Institute in Germany, that dream is realized.

Read More »
Scroll To Top