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The Making of the Largest 3D Map of the Universe

The Making of the Largest 3D Map of the Universe

DESI, the Dark Energy Spectroscopic Instrument, will mobilize 5,000 swiveling robots – each one pointing a thin strand of fiber-optic cable – to gather...
DESI “first light” image of the Whirlpool Galaxy, also known as Messier 51. This image was obtained the first night of observing with the DESI Commissioning Instrument on the Mayall Telescope at the Kitt Peak National Observatory in Tucson, Arizona; an r-band filter was used to capture the red light from the galaxy. (Credit: DESI Collaboration)

Dark Energy Instrument’s Lenses See the Night Sky for the First Time

On April 1, the dome of the Mayall Telescope near Tucson, Arizona, opened to the night sky, and starlight poured through the assembly of...
A method developed by a Berkeley Lab-led research team may one day turn ordinary semiconducting materials into quantum electronic devices. (Credit: iStock.com/NiPlot)

When semiconductors stick together, materials go quantum

Two-dimensional (2D) materials, which are only one atom thick, resemble nanosized building blocks that can be stacked arbitrarily to frame little gadgets. At the...
A mysterious process called oxygen oxidation strips electrons from oxygen atoms in lithium-rich battery cathodes and degrades their performance. Better understanding this property and controlling its effects could lead to better performing electric vehicles. (Credit: Gregory Stewart/SLAC National Accelerator Laboratory)

First complete picture of lithium-ion battery performance

The problem with today's commercial batteries is they release about half of the lithium ions they contain. One solution on this is to cram cathodes with...
Heather Crawford and her team of researchers are developing a prototype for an ultrahigh-rate high-purity germanium detector that can count 2 to 5 million gamma rays per second while maintaining high resolution. (Credit: Marilyn Chung/Berkeley Lab)

New detector to count 2 to 5 million gamma rays per second

Heather Crawford, a staff scientist in the Nuclear Science Division at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory, along with her colleagues...
At left, a tiny bead struck by a laser (at the yellowish spot shown at the top of the image) produces optical modes that circulate around the interior of the bead (pinkish ring). At right, a simulation of how the optical field inside a 5-micron (5 millionths of a meter) bead is distributed. (Credit: Angel Fernandez-Bravo/Berkeley Lab, Kaiyuan Yao)

Continuously emitting microlasers with nanoparticle-coated beads

Now it is possible to convert nanoparticle-coated microscopic beads into lasers, thanks to the new technique demonstrated by Berkeley scientists. The technique opens up...
Valleytronics utilizes different local energy extrema (valleys) with selection rules to store 0s and 1s. In SnS, these extrema have different shapes and responses to different polarizations of light, allowing the 0s and 1s to be directly recognized. This schematic illustrates the variation of electron energy in different states, represented by curved surfaces in space. The two valleys of the curved surface are shown.

Valleytronics discovery could help extend limits of Moore’s law

A new study by the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and Shuren Lin of UC Berkeley’s Department of Materials Science and...
A molecular model of a peptoid nanosheet shows loop structures in sugars (orange) that bind to the Shiga toxin (shown as a five-color bound structure at upper right). (Credit: Berkeley Lab)

New sugar-coated nanosheets to selectively target pathogens

A team led by scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a process for creating ultrathin,...
These schematics show the printing of water in oil using a nanoparticle supersoap. Gold nanoparticles in the water combine with polymer ligands in the oil to form an elastic film (nanoparticle supersoap) at the interface, locking the structure in place. (Credit: Berkeley Lab)

Scientists print all-liquid 3D structures

Researchers from the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) have built up an approach to print 3D structures made completely out...