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UCLA physicists demonstrate method to study atoms critical to medicine

By Guest PostDecember 29, 2016Scienceabsolute zero, andrew jayich, atoms, critical to medicine, electromagnetic spectrum, energy, packets of light, photons, ucla physicists, wesley campbell, xueping long

Multicolored laser light is the key to cooling these atoms to nearly absolute zero

UCLA physicists have shown that shining multicolored laser light on rubidium atoms causes them to lose energy and cool to nearly absolute zero. This result suggests that atoms fundamental to chemistry, such as hydrogen and carbon, could also be cooled using similar lasers, an outcome that would allow researchers to study the details of chemical reactions involved in medicine. (more…)

UCLA physicists discover ‘apparent departure from the laws of thermodynamics’

By Guest PostNovember 2, 2016Scienceabsolute zero, atoms, buffer gas cooling, collisions, eric hudson, ion traps, laws of thermodynamics, particle motion

Ions subjected to buffer gas cooling never truly reach the same temperature as the surrounding gas

According to the basic laws of thermodynamics, if you leave a warm apple pie in a winter window eventually the pie would cool down to the same temperature as the surrounding air. (more…)

Seeing Atoms and Molecules in Action with an Electron ‘Eye’

By Guest PostJune 29, 2016Scienceapex gun, atoms, daniele filippetto, electron eye, electron guns, hires, molecules, ultrafast electron diffraction

Berkeley Lab’s HiRES to provide new views of material changes, chemical reactions

A unique rapid-fire electron source—originally built as a prototype for driving next-generation X-ray lasers—will help scientists at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) study ultrafast chemical processes and changes in materials at the atomic scale. This could provide new insight in how to make materials with custom, controllable properties and improve the efficiency and output of chemical reactions. (more…)

Metal Made Like Plastic May Have Big Impact

By Guest PostOctober 16, 2014Science3d metall drucker, 3d printing, atoms, brigham young university, bulk metallic glasses, clean, digital strategy, elektronenstrahl druck verfahren, ernst rauch, flexibility, german reinsurance company, giovanni d, jpl, metal, model, munich re, NASA, science meets risk, spacecraft, thomas niendorf, understanding climate change

Open a door and watch what happens — the hinge allows it to open and close, but doesn’t permanently bend. This simple concept of mechanical motion is vital for making all kinds of movable structures, including mirrors and antennas on spacecraft. Material scientists at NASA’s Jet Propulsion Laboratory in Pasadena, California, are working on new, innovative methods of creating materials that can be used for motion-based mechanisms. (more…)

Diamond in the rough

By Guest PostMay 28, 2013Scienceatoms, chaoying ni, conductivity for oxygen, conductor of oxygen, costume jewelry, cubic zirconia, Diamond, electrolyte, joshua hertz, jun jiang, oxide fuel cells, university of delaware, weida shen, xiaocao hu, yttria stabilized zirconia

UD researchers manipulate cubic zirconia to improve conductivity in fuel cells

Cubic zirconia has long been favored for its use in costume jewelry.

Known scientifically as yttria-stabilized zirconia, it is also a known conductor of oxygen, making it useful as an electrolyte in solid oxide fuel cells.

Researchers at the University of Delaware recently fabricated the material into very thin films on the surface of sapphire crystals using a technique called sputtering to determine whether the conductivity for oxygen could be improved, enabling solid oxide fuel cells to become a more economical and efficient electrical power source. (more…)

IBM Research Makes World’s Smallest Movie Using Atoms

By Guest PostMay 2, 2013Technologya boy, andreas heinrich, atomic memory, atoms, big data, christopher lutz, data storage, feel atoms, guinness world records, his atom, ibm research, ibm research lab, ibm scientists, law, million atoms, molecules, moore, nanoscale, nobel prize, novel, smallest movie

Future storage systems based on atomic-scale memory would be capable of storing massive amounts of Big Data
GUINNESS WORLD RECORDS® certifies movie as World’s Smallest Stop-Motion Film

SAN JOSE, Calif. – 01 May 2013: Scientists from IBM today unveiled the world’s smallest movie, made with one of the tiniest elements in the universe: atoms. Named “A Boy and His Atom,” the GUINNESS WORLD RECORDS -verified movie used thousands of precisely placed atoms to create nearly 250 frames of stop-motion action. (more…)

Surprising Control over Photoelectrons from a Topological Insulator

By Guest PostMarch 24, 2013Science3d topological insulators, alessandra lanzara, als, angle resolved, arpes, atoms, berkeley lab, chris jozwiak, data collection, dirac point, dung hai lee, electronic states, energy momentum diagrams, field of spintronics, flight analyzer, german, graphene, incident light, laser beam, magnetic surface, momentum space, p polarized, photoelectrons, photoemission spectroscopy, quantum computing, s polarization, s polarized, senkrecht, spin polarized, spin time, steve louie, strange crystalline materials, tis, topological insulator, university of california, zahid hussain

Berkeley Lab scientists discover how a photon beam can flip the spin polarization of electrons emitted from an exciting new material

Plain-looking but inherently strange crystalline materials called 3D topological insulators (TIs) are all the rage in materials science. Even at room temperature, a single chunk of TI is a good insulator in the bulk, yet behaves like a metal on its surface.

Researchers find TIs exciting partly because the electrons that flow swiftly across their surfaces are “spin polarized”: the electron’s spin is locked to its momentum, perpendicular to the direction of travel. These interesting electronic states promise many uses – some exotic, like observing never-before-seen fundamental particles, but many practical, including building more versatile and efficient high-tech gadgets, or, further into the future, platforms for quantum computing. (more…)

Researchers Propose New Way to Probe Earth’s Deep Interior

By Guest PostFebruary 25, 2013Scienceafu lin, amherst college, atoms, austin, building blocks, central core, characteristics, characteristics of mantle, chemical properties, composition, deep earth, earth, earth rotation axis, electromagnetism, electron spin density, electrons, elusive fifth force, fifth force, geoelectrons, geological layer, geomagnetic field, gravitational attraction, gravity, interior, jung fu, larry hunter, magnetic interaction, mantle, Nature, neutrons, new technique, outer crust, protons, researchers, spin, spin directions, spin spin interaction, strong nuclear forces, subatomic particles, university of texas

AUSTIN, Texas — Researchers from Amherst College and The University of Texas at Austin have described a new technique that might one day reveal in higher detail than ever before the composition and characteristics of the deep Earth.

There’s just one catch: The technique relies on a fifth force of nature (in addition to gravity, the weak and strong nuclear forces and electromagnetism) that has not yet been detected, but which some particle physicists think might exist. Physicists call this type of force a long-range spin-spin interaction. If it does exist, this exotic new force would connect matter at Earth’s surface with matter hundreds or even thousands of kilometers below, deep in Earth’s mantle. In other words, the building blocks of atoms—electrons, protons, and neutrons—separated over vast distances would “feel” each other’s presence. The way these particles interact could provide new information about the composition and characteristics of the mantle, which is poorly understood because of its inaccessibility. (more…)

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