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Dynamic Spectroscopy Duo

By Guest PostOctober 5, 2014Scienceausbreitung von tumoren, berkeley lab, biological systems, brendan barrett, dcm, graham fleming, hendrik kramers, jumping nanoparticles, kramers turnover, laser trapped particle, levitated nanoparticles, loic rondin, lomas barbudal, monkey project, role of friction, sociable capuchins, Thomas Oliver, two dimensional

2D Electronic-Vibrational Spectroscopy Technique Provides Unprecedented Look into Photochemical Reactions

From allowing our eyes to see, to enabling green plants to harvest energy from the sun, photochemical reactions – reactions triggered by light – are both ubiquitous and critical to nature. Photochemical reactions also play essential roles in high technology, from the creation of new nanomaterials to the development of more efficient solar energy systems. Using photochemical reactions to our best advantage requires a deep understanding of the interplay between the electrons and atomic nuclei within a molecular system after that system has been excited by light. A major advance towards acquiring this knowledge has been reported by a team of researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley. (more…)

Manipulating and Detecting Ultrahigh Frequency Sound Waves

By Guest PostSeptember 28, 2014Scienceacromegaly, berkeley lab, bronzezeit, character shrek, falko daim, geo referenced robot, geschlechterspezifische kooperationsbereitschaft, gigahertz, grabfund, haim suchowski, inspiration, jonathan rogers, junsuk rho, kevin obrien, kulturvermittlung, luise greger, maerchenoper gaenseliesel, maurice tillet, pharao tutanchamun, robot swings, schatz, siechenhaus hofgeismar, sound waves, stephan seidlmayer, syrischen koenigsstadt qaṭna, tarzan robot, two armed robot, wassertemperatur, wave, wissen, xiang zhang, xiaobo yin

Berkeley Lab Researchers Demonstrate Advance in Controlling Nano-scale Vibrations at 10 GHz

An advance has been achieved towards next generation ultrasonic imaging with potentially 1,000 times higher resolution than today’s medical ultrasounds. Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have demonstrated a technique for producing, detecting and controlling ultrahigh frequency sound waves at the nanometer scale. (more…)

Berkeley Lab Researchers Create Nanoparticle Thin Films That Self-Assemble in One Minute

By Guest PostSeptember 10, 2014Scienceberkeley lab, block copolymers, create, fossiles exemplar, gold nanoparticles, joseph kao, kari thorkelsson, knochenfischen, lungenfischen, martin thunemann, microtechnology, mysterioese fossil, nanocomposite, nanometer, palaeospondylus, palaeospondylus gunni, pet cell tracking, peter bai, polymer scientist, researcher, robert feil, self assemble, supramolecule, taskin deniz, ting xu

The days of self-assembling nanoparticles taking hours to form a film over a microscopic-sized wafer are over. Researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) have devised a technique whereby self-assembling nanoparticle arrays can form a highly ordered thin film over macroscopic distances in one minute.

Ting Xu, a polymer scientist with Berkeley Lab’s Materials Sciences Division, led a study in which supramolecules based on block copolymers were combined with gold nanoparticles to create nanocomposites that under solvent annealing quickly self-assembled into hierarchically-structured thin films spanning an area of several square centimeters. The technique is compatible with current nanomanufacturing processes and has the potential to generate new families of optical coatings for applications in a wide number of areas including solar energy, nanoelectronics and computer memory storage. This technique could even open new avenues to the fabrication of metamaterials, artificial nanoconstructs that possess remarkable optical properties. (more…)

Evolution of a Bimetallic Nanocatalyst

By Guest PostAugust 16, 2014Scienceberkeley lab, christoph heinrich, ehrlichkeit, evolution, evolution of literature, gerhard schroeder, gulf diplomats, haimei zheng, hydrogen gas, joseph dexter, nitrat im grundwasser, oxygen, platinum, poem for mother, pramit chaudhuri, quantitative criticism, reaction, umweltverband wwf

Atomic-scale snapshots of a bimetallic nanoparticle catalyst in action have provided insights that could help improve the industrial process by which fuels and chemicals are synthesized from natural gas, coal or plant biomass. A multi-national lab collaboration led by researchers with the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) has taken the most detailed look ever at the evolution of platinum/cobalt bimetallic nanoparticles during reactions in oxygen and hydrogen gases. (more…)

Unexpected Water Explains Surface Chemistry of Nanocrystals

By Guest PostJuly 13, 2014Scienceberkeley lab, christopher weidenmaier, daniela keinhoerster, jessica schade, light therapy, mark emberton, nanocrystals, nanoparticles, oleic acid, pbs, photodynamic therapy, steba biotech, stefanie wanner, tumour tissue, vtp

Berkeley Lab Scientists Answer Questions of How Charged Ligands Balance on Surface of Colloidal Nanoparticles

Danylo Zherebetskyy and his colleagues at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) found unexpected traces of water in semiconducting nanocrystals. (more…)

Berkeley Lab Develops Nanoscope to Probe Chemistry on the Molecular Scale

By Guest PostJune 22, 2014Scienceatomic force microscopy, berkeley lab, bezahnten schildkroete, fourier transform, ftir, ganeshwaran mochida, gpt2, green party, hans bechtel, jill stein, lida xing, meteorites, michael martin, molecular scale, mouse neuron, new technique, oberen jura, ozan baytas neurological disease, proteins, qing ouyang, schildkroeten, sichuanchelys palatodentata, stardust, synchrotron infrared, university of colorado, walter joyce, wucaiwan, wuestenregion chinas

For years, scientists have had an itch they couldn’t scratch. Even with the best microscopes and spectrometers, it’s been difficult to study and identify molecules at the so-called mesoscale, a region of matter that ranges from 10 to 1000 nanometers in size. Now, with the help of broadband infrared light from the Advanced Light Source (ALS) synchrotron at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), researchers have developed a broadband imaging technique that looks inside this realm with unprecedented sensitivity and range.

By combining atomic force microscopy with infrared synchrotron light, researchers from Berkeley Lab and the University of Colorado have improved the spatial resolution of infrared spectroscopy by orders of magnitude, while simultaneously covering its full spectroscopic range, enabling the investigation of variety of nanoscale, mesoscale, and surface phenomena that were previously difficult to study. (more…)

Berkeley Lab Climate Scientist: More Extreme Heat and Drought in Coming Decades

By Guest PostMay 29, 2014Environmentatmosphere, berkeley lab, britisch premier, climate scientist, CO2, emission scenario, global scale, ipcc, michael wehner, muammar al gaddafi, scenarios, temperature increase, the apprentice, united states

Lab climate expert is a lead author on the National Climate Assessment.

By the end of this century climate change will result in more frequent and more extreme heat, more drought, and fewer extremes in cold weather in the United States. Average high temperatures could climb as much as 10 or more degrees Fahrenheit in some parts of the country. These are some of the projections made by Lawrence Berkeley National Laboratory (Berkeley Lab) climate scientist Michael Wehner and his co-authors on the National Climate Assessment (NCA). (more…)

No Ocean-Borne Radiation from Fukushima Detected on West Coast Shoreline, According to Analysis of 1st Samples from ‘Kelp Watch 2014’

By Guest PostMay 11, 2014Environmentaist tsukuba, alaska, analysis, aufbruch, ballet, benefits, berkeley lab, brent scott, california state university, canada, consistent jerk, detector, deutschen familiennamenatlas, disaster, fadel matta, fukushima, hawaii, indicator of stress, Japan, joffrey ballet, kathrin draeger, klimaaenderung, kohlenstoffskette, lei shi, long beach, lukas lehnert, marine biology, monika ardelt, North America, nuclear power plant, pain reduction technique, professor, scott page, tropics, vancouver island

LONG BEACH, Calif.—Scientists working together on Kelp Watch 2014 announced today that the West Coast shoreline shows no signs of ocean-borne radiation from Japan’s Fukushima nuclear power plant disaster, following their analysis of the first collection of kelp samples along the western U.S. coastline.

Kelp Watch 2014 is a project that uses coastal kelp beds as detectors of radioactive seawater arriving from Fukushima via the North Pacific Current. It is a collaborative effort led by Steven Manley, marine biology professor at California State University, Long Beach (CSULB), and Kai Vetter, head of applied nuclear physics at the Lawrence Berkeley National Laboratory (Berkeley Lab) and a nuclear engineering professor at the University of California, Berkeley. (more…)

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