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Scientists build thinnest-possible LEDs to be stronger, more energy efficient

Most modern electronics, from flat-screen TVs and smartphones to wearable technologies and computer monitors, use tiny light-emitting diodes, or LEDs. These LEDs are based off of semiconductors that emit light with the movement of electrons. As devices get smaller and faster, there is more demand for such semiconductors that are tinier, stronger and more energy efficient.

University of Washington scientists have built the thinnest-known LED that can be used as a source of light energy in electronics. The LED is based off of two-dimensional, flexible semiconductors, making it possible to stack or use in much smaller and more diverse applications than current technology allows. (more…)

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…)

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Scientists build thinnest-possible LEDs to be stronger, more energy efficient

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