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Archive for the ‘particle physics’ category: Page 186

Apr 26, 2016

Hi-res nanoparticle maps reveal best shape for batteries

Posted by in categories: biological, computing, nanotechnology, particle physics

Many recent big technological advances in computing, communications, energy, and biology have relied on nanoparticles. It can be hard to determine the best nanomaterials for these applications, however, because observing nanoparticles in action requires high spatial resolution in “messy,” dynamic environments.

In a recent step in this direction, a team of engineers has obtained a first look inside phase-changing nanoparticles, showing how their shape and crystallinity—the arrangement of atoms within the crystal—can have dramatic effects on their performance.

The work, which appears in Nature Materials, has immediate applications in the design of energy storage materials, but could eventually find its way into data storage, electronic switches, and any device in which the phase transformation of a material regulates its performance.

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Apr 26, 2016

New artificial protein assembles materials at the nanoscale

Posted by in categories: nanotechnology, particle physics

HANOVER, N.H., April 26 (UPI) — Proteins are the contractors of the nanoscale natural world, assembling and building at the atomic, molecular and cellular levels. Increasingly, materials scientists are working to harness that power.

Recently, researchers at Dartmouth College created protein capable of crafting buckyball molecules. “Buckyball” is a nickname for buckminsterfullerene molecules, a soccer ball-shaped molecule of 60 carbon atoms.

The newly synthesized protein organizes buckyballs into a periodic lattice — a wall of buckyballs.

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Apr 26, 2016

Superfast light source made from artificial atom

Posted by in categories: computing, particle physics, quantum physics

A new method to create light while retaining the energy using Q-Dot technology.


All light sources work by absorbing energy – for example, from an electric current – and emit energy as light. But the energy can also be lost as heat and it is therefore important that the light sources emit the light as quickly as possible, before the energy is lost as heat. Superfast light sources can be used, for example, in laser lights, LED lights and in single-photon light sources for quantum technology. New research results from the Niels Bohr Institute show that light sources can be made much faster by using a principle that was predicted theoretically in 1954. The results are published in the scientific journal, Physical Review Letters.

Researchers at the Niels Bohr Institute are working with quantum dots, which are a kind of artificial atom that can be incorporated into optical chips. In a quantum dot, an electron can be excited (i.e. jump up), for example, by shining a light on it with a laser and the electron leaves a ‘hole’. The stronger the interaction between light and matter, the faster the electron decays back into the hole and the faster the light is emitted.

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Apr 25, 2016

Engineers Explore How Nanoparticles’ Shape Improves Energy Storage

Posted by in categories: nanotechnology, particle physics

Very nice.


Many technologies rely upon nanomaterials that can absorb or release atoms quickly and repeatedly. New work by Jennifer Dionne’s research group provides a first look inside these phase-changing nanoparticles, showing how their shape and crystallinity affect their performance for battery applications.

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Apr 25, 2016

Scientists take next step towards observing quantum physics in real life

Posted by in categories: computing, drones, particle physics, quantum physics, transportation

Turning on Quantum properties onto a cup of coffee. First step; should be interesting in what researchers discover especially around teleporting. Imaging you’re Dominos pizza with a teleport hub and customer orders a pizza. No longer need a self driving car, or drone; with this technology Dominos can teleport your hot fresh pizza to your house immediately after it is out of the oven.


Small objects like electrons and atoms behave according to quantum mechanics, with quantum effects like superposition, entanglement and teleportation. One of the most intriguing questions in modern science is if large objects – like a coffee cup — could also show this behavior. Scientists at the TU Delft have taken the next step towards observing quantum effects at everyday temperatures in large objects. They created a highly reflective membrane, visible to the naked eye, that can vibrate with hardly any energy loss at room temperature. The membrane is a promising candidate to research quantum mechanics in large objects.

The team has reported their results in Physical Review Letters.

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Apr 23, 2016

New state of water molecule discovered

Posted by in category: particle physics

Neutron scattering and computational modeling have revealed unique and unexpected behavior of water molecules under extreme confinement that is unmatched by any known gas, liquid or solid states.

In a paper published in Physical Review Letters, researchers at the Department of Energy’s Oak Ridge National Laboratory describe a new tunneling state of water molecules confined in hexagonal ultra-small channels — 5 angstrom across — of the mineral beryl. An angstrom is 1/10-billionth of a meter, and individual atoms are typically about 1 angstrom in diameter.

The discovery, made possible with experiments at ORNL’s Spallation Neutron Source and the Rutherford Appleton Laboratory in the United Kingdom, demonstrates features of water under ultra confinement in rocks, soil and cell walls, which scientists predict will be of interest across many disciplines.

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Apr 23, 2016

Data Compression Used to Detect Quantum Entanglement

Posted by in categories: information science, particle physics, quantum physics

Interesting — data compression algorithm can be applied to detect Quantum Entanglement.


The next time you archive some files and compress them, you might think about the process a little differently. Researchers at the National University of Singapore have discovered a common compression algorithm can be used to detect quantum entanglement. What makes this discovery so interesting is that it does not rely on heavily on an assumption that the measured particles are independent and identically distributed.

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Apr 22, 2016

Faster Than Light! Incredible Illusion Makes Images ‘Time Travel’

Posted by in categories: information science, particle physics, time travel

Using a weird phenomenon in which particles of light seem to travel at faster-than-light speeds, scientists have shown that waves of light can seem to travel backward in time.

The new experiment also shows other bizarre effects of light, such as pairs of images forming and annihilating each other.

Taken together, the results finally prove a century-old prediction made by British scientist and polymath Lord Rayleigh. The phenomenon, called time reversal, could allow researchers to develop ultra-high-speed cameras that can peer around corners and see through walls. [In Images: The World’s 11 Most Beautiful Equations].

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Apr 22, 2016

Stephen Hawking: “History and memories could be illusions” because of black holes

Posted by in categories: cosmology, particle physics

Welcome to our imaginary existential nightmare…


Stephen Hawking recently discussed black holes and the often contradictory properties associated with them during a lecture at Harvard. The Harvard Gazette said recently that Hawking specifically explained that, if information is really lost in black holes, then we will have been misunderstanding not only black holes, but the science of determinism, for the last 200 years.

Hawking said that particles that fall into a black hole “can’t just emerge when the black hole disappears.” Instead, “the particles that come out of a black hole seem to be completely random and bear no relation to what fell in. It appears that the information about what fell in is lost, apart from the total amount of mass and the amount of rotation.”

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Apr 21, 2016

Meet the Nanomachines That Could Drive a Medical Revolution

Posted by in categories: biotech/medical, nanotechnology, particle physics

Nice


A group of physicists recently built the smallest engine ever created from just a single atom. Like any other engine it converts heat energy into movement — but it does so on a smaller scale than ever seen before. The atom is trapped in a cone of electromagnetic energy and lasers are used to heat it up and cool it down, which causes the atom to move back and forth in the cone like an engine piston.

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