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Berkeley Lab News
NASA Launches Lunar Flashlight: Week in Brief: 12/16/22
WASHINGTON, D.C., Dec. 16, 2022 — NASA’s Lunar Flashlight has communicated with mission controllers and confirmed it is healthy after launching Dec. 11 from Cape Canaveral Space Force Station. The satellite embarked on a four-month journey to the moon to seek out surface water ice in permanently shadowed craters at the lunar south pole. Lunar Flashlight will use a reflectometer equipped with four lasers that emit near-infrared light in wavelengths readily absorbed by surface water ice. This is the first time that
Optical Measurement Reduces Vibration in High-Power Lasers
BERKELEY, Calif., Aug. 2, 2021 — The Berkeley Lab Laser Accelerator (BELLA) Center at the U.S. Department of Energy’s Lawrence Livermore National Laboratory has developed and tested an optical system to precisely measure and control the position and pointing angle of...
5-Year Search for Dark Energy Begins
BERKELEY, Calif., May 24, 2021 — The Dark Energy Spectroscopic Instrument (DESI) has begun its five-year search for dark energy. The device, housed at Kitt Peak National Observatory near Tucson, Ariz., will aim its robotic array of 5000 fiber optic “eyes” at the night...
Blue-Emitting Diode Shows Limitations and Promise of Perovskite Semiconductors
BERKELEY, Calif., Feb. 18, 2020 — Scientists at the University of California, Berkeley, have created a blue light-emitting diode (LED) from halide perovskite, a new semiconductor material said to be cheap and easy to manufacture, overcoming a barrier that had previously prevented...
Laser ‘Drill’ Sets a New Record in Laser-Driven Electron Acceleration
BERKELEY, Calif., Feb. 27, 2019 — Using a laser pulse to heat up and “drill” through a plasma, scientists at Lawrence Berkeley National Laboratory have nearly doubled the previous record for laser-driven particle acceleration. The new record of propelling electrons to 7.8 electron...
Spectroscopic 3D Survey Maps 1.2M Galaxies
BERKELEY, Calif., July 27, 2016 — The largest-ever 3D map of distant galaxies has been constructed with measurements made by the Baryon Oscillation Spectroscopic Survey (BOSS) program of the Sloan Digital Sky Survey-III, headquartered at Lawrence Berkeley National Lab. Shaped by a...
Camera Overcomes Redshift for Astronomical Imaging
BERKELEY, Calif., Feb. 9, 2016 — Upgraded light sensors have enabled a camera to image outer space at red wavelengths that are too red for the human eye to see. Star trails take shape around Kitt Peak National Observatory in this long-exposure image. The 4-m Mayall Telescope...
'Biochemical Nose' Targeted for Home Sensing Market
HAYWARD, Calif., Aug. 12, 2015 — A "biochemical nose" based on Raman spectroscopy can quickly and accurately detect or diagnose substances at the molecular level for applications in food safety, medical diagnosis, chemical analysis and even home safety. "Our system can do...
Solar Nanowire-Bacteria Array Converts CO
2
into Useful Chemicals
BERKELEY, Calif., April 23, 2015 — A new artificial photosynthesis process could be used to capture carbon dioxide emissions and convert them into plastics, drugs and fuels with help from sunlight. Scientists with the U.S. Department of Energy’s Lawrence Berkeley National...
Nanowire Optical Properties Tuned by Alloy Catalyst
BERKELEY, Calif., March 9, 2015 — A new growth catalyst gives greater control over the colors of light emitted by gallium nitride nanowires. Rather than using a single metal, researchers at Lawrence Berkeley National Laboratory used gold-nickel alloys as a catalyst. By altering the...
Model Predicts Metamaterials’ Nonlinear Optical Properties
BERKELEY, Calif., Feb. 23, 2015 — A new approach that can predict the nonlinear light scattering properties of nanoscale objects could help turn optical metamaterials to more practical uses. The unique electromagnetic properties of metamaterials stem from their physical structure...
Spontaneous Emission Enhanced by Nanoantennas
BERKELEY, Calif., Feb. 5, 2015 — LEDs equipped with nanoscale optical antennas to spontaneously emit more light could be a better solution than lasers for short-range optical communications. Researchers at Lawrence Berkeley National Laboratory have taken a first step in this...
Synchrotron Light Sources, FTIR Advance Space-Dust Study
BERKELEY, Calif., Aug. 18, 2014 — Microscopic analysis of interstellar dust is giving scientists an in-depth look at the origins of our solar system. A team from the U.S. Department of Energy's Lawrence Berkeley National Laboratory is using a Fourier transform infrared (FTIR)...
New Spectroscopy Technique Probes Photochemical Reactions
BERKELEY, Calif., June 18, 2014 — Photochemical reactions have become key players in high technology, namely in the development of nanomaterials and solar energy systems. Better understanding of these light-triggered processes could lead to more efficient use. A team from Lawrence...
Ultrabright Nanocrystals Could Image Single Proteins
BERKELEY, Calif., March 19, 2014 — The future is bright in the world of biological imaging with the recent creation of ultrabright, ultrasmall light-emitting crystals that can image single proteins.
For phasing nanocrystals, size really matters
BERKELEY, Calif. – Size is of much greater importance than previously believed in metal nanocrystals undergoing phase transformations, a finding that has important implications for the future design of hydrogen storage systems, catalysts, fuel cells and batteries....
2-D semiconductors demonstrate universal light absorption law
BERKELEY, Calif. – A simple law of light absorption observed in 2-D semiconductors could make exotic new optoelectronic and photonic technologies a reality. Many of today’s semiconductor technologies hinge upon the absorption of light. It’s especially...
For Phasing Nanocrystals, Size Really Matters
BERKELEY, Calif., Aug. 27, 2013 — Size is of much greater importance than previously believed in metal nanocrystals undergoing phase transformations, a finding that has important implications for the future design of hydrogen storage systems, catalysts, fuel cells and batteries.
IR Tomography Goes Full Color
BERKELEY, Calif., Aug. 6, 2013 — Combining Fourier transform infrared (FTIR) spectroscopy with computed tomography creates a non-destructive, 3-D imaging technique providing full-color, molecular-level chemical information of unprecedented detail on biological and other samples...
Universal Light Absorption Law Discovered in 2-D Semiconductors
BERKELEY, Calif., Aug. 1, 2013 — A simple law of light absorption observed in 2-D semiconductors could make exotic new optoelectronic and photonic technologies a reality.
Nanocrystals Could Inform Nanocomposite Design
BERKELEY, Calif., July 30, 2013 — An optomechanical sensing technique that uses fluorescent tetrapod quantum dots to precisely measure the tensile strength of polymer fibers with minimal impact on their mechanical property could pave the way to stronger nanocomposite designs.
Light Source Links Vitamin D Deficiency to Accelerated Bone Aging
BERKELEY, Calif., July 23, 2013 — Sunshine may be bad for your skin, but it is good for your bones, and now researchers in California and Germany have discovered that a deficiency in vitamin D — the sunshine vitamin — can accelerate premature bone aging by increasing the risk of...
Metamaterials observe photonic spin Hall effect
BERKELEY, Calif. – A metamaterial surface constructed of V-shaped gold nanoantennas was used to obtain the strongest signal yet of the photonic spin Hall effect – a quantum mechanical optical phenomenon that could play a prominent role in the future of...
Metamaterials Observe Photonic Spin Hall Effect
BERKELEY, Calif., March 22, 2013 — A metamaterial surface constructed of V-shaped gold nanoantennas was used to obtain the strongest signal yet of the photonic spin Hall effect — a quantum mechanical optical phenomenon that could play a prominent role in the future of computing.
Microactuator flexes under laser light
BERKELEY, Calif. – A microscale actuator that flexes like a tiny beckoning finger under a burst of laser light may point toward practical applications in artificial muscles, microfluidics and drug delivery. The Lawrence Berkeley National Laboratory (Berkeley Lab)...
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May 2024
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