Tag Archive for Materials Sciences Division
Research Opportunities Plentiful for Next Generation Batteries
Berkeley Lab spin-off company PolyPlus is making big strides in lithium-metal batteries, but there are research challenges and opportunities ahead.
Chromatography Goes Gold: Gold Nanoparticles and Monoliths Make a Perfect Match
The power of chromatography for studying proteins and peptides can be substantially boosted with the addition of gold nanoparticles to polymer monolith surfaces.
Speeding the Search for Better Methane Capture
Systematic in silico studies have identified several zeolite compounds that show technological promise for capturing methane, the main component of natural gas that can serve as an ally or an adversary in combating global climate change.
Surprising Control over Photoelectrons from a Topological Insulator
Electrons flowing swiftly across the surface of topological insulators (TIs) are “spin polarized,” their spin and momentum locked. This new way to control electron distribution in spintronic devices makes TIs a hot topic in materials science. Now Berkeley Lab scientists have discovered more surprises: contrary to assumptions, the spin polarization of photoemitted electrons from a topological insulator is wholly determined in three dimensions by the polarization of the incident light beam.
Long Predicted Atomic Collapse State Observed in Graphene
Seventy years ago theorists predicted superlarge nuclei would exhibit a quantum-mechanical phenomenon known as “atomic collapse.” Recently materials scientists calculated that highly-charged impurities in graphene should exhibit a corresponding state, a buildup of electrons partially localized in space and energy constituting a unique electronic resonance. By constructing artificial superlarge nuclei on graphene, researchers at Lawrence Berkeley National Laboratory have achieved the first experimental observation of the long-sought state, with important implications for the future of graphene-based electronic devices.
Another Tool in the Nano Toolbox: Berkeley Lab Scientists Use Electron Beam to Manipulate Nanoparticles
Berkeley Lab scientists have developed a way to manipulate nanoparticles using an electron beam. They used an electron beam from a transmission electron microscope to trap gold nanoparticles and direct their movement. They also used the beam to assemble several nanoparticles into a tight cluster. Based on their results, the scientists believe their approach could lead to a new way to build nanostructures one nanoparticle at a time.
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