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Flawed Diamonds Promise Sensory Perfection

By Guest PostJune 10, 2013Scienceandrey jarmola, berkeley lab, binary digit, biophysics, carbon atoms, center, defense, degrees kelvin, diamond defect, dmitry budker, electron spin coherence, electrons, flawed diamonds, fluoresce, gyroscopes, hebrew university, Jerusalem, liquid nitrogen, magnetic resonance imaging, mri, nanoscale, nir bar gill, nitrogen vacancy, nuclear spin, nv, oscillating magnetic fields, quadrillionths, quantum computer, quantum information, ronald walsworth, rotational sensors, second, sensory perfection, smart phones, temperature

Berkeley Lab researchers and their colleagues extend electron spin in diamond for incredibly tiny magnetic detectors

From brain to heart to stomach, the bodies of humans and animals generate weak magnetic fields that a supersensitive detector could use to pinpoint illnesses, trace drugs – and maybe even read minds. Sensors no bigger than a thumbnail could map gas deposits underground, analyze chemicals, and pinpoint explosives that hide from other probes.

Now scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California at Berkeley, working with colleagues from Harvard University, have improved the performance of one of the most potent possible sensors of magnetic fields on the nanoscale – a diamond defect no bigger than a pair of atoms, called a nitrogen vacancy (NV) center. (more…)

Science Xplained: Ice cream chemistry

By Guest PostMay 8, 2013Scienceainissa ramirez, avalanches, how ice freezes, ice cream, ice cream chemistry, knowledge, liquid nitrogen, mechanical engineering, science xplained, surface of neptune

Ainissa Ramirez, associate professor of mechanical engineering, describes the science behind a tasty bit of chemistry — ice cream. She shows how to make ice cream using liquid nitrogen, which is as cold as the surface of Neptune, and describes why these cold temperatures makes ice cream, creamier. She demonstrates how our knowledge of how […]

Under the Electron Microscope – A 3-D Image of an Individual Protein

By Guest PostJanuary 25, 2012Science3d image, apoa 1, apolipoprotein a 1, atomic scale resolution, bad cholesterol, berkeley lab, cryo electron microscope, cryoem, electron microscopic image, energy filter, fuzzy, gang ren, german manufacturers, good cholesterol, grapheme, hdl, heart disease, human metabolism, igg antibody, individual particle electron tomography, ipet, kilodaltons, lattice of carbon, lei zhang, libra 120, lilliputian scale, liquid nitrogen, measure of atoms, model, molecular foundry, molecule, nanometer, Nanotechnology, nuclear magnetic resonance, one atom, particle, protein, protein model, pulses of energy, racing bicycle, risk factor, single protein, xray diffraction, zeiss libra 120 cryo tem microscope

*The high resolution of Lawrence Berkeley National Laboratory’s Gang Ren*

When Gang Ren whirls the controls of his cryo-electron microscope, he compares it to fine-tuning the gearshift and brakes of a racing bicycle. But this machine at the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) is a bit more complex. It costs nearly $1.5 million, operates at the frigid temperature of liquid nitrogen, and it is allowing scientists to see what no one has seen before.

At the Molecular Foundry, Berkeley Lab’s acclaimed nanotechnology research center, Ren has pushed his Zeiss Libra 120 Cryo-Tem microscope to resolutions never envisioned by its German manufacturers, producing detailed snapshots of individual molecules. Today, he and his colleague Lei Zhang are reporting the first 3-D images of an individual protein ever obtained with enough clarity to determine its structure. (more…)

Tag Archives: liquid nitrogen

Flawed Diamonds Promise Sensory Perfection

Science Xplained: Ice cream chemistry

Under the Electron Microscope – A 3-D Image of an Individual Protein