Materials | sciencenewsnet.in

Breaking (and Restoring) Graphene’s Symmetry in a Twistable Electronics Device

November 21, 2019 sarah Jonas 0 Comments Condensed Matter, Graphene, Materials

A recent Columbia Engineering study demonstrates a new way to tune the properties of 2D materials simply by adjusting the twist angle between them. The researchers built devices consisting of monolayer graphene encapsulated between two crystals of boron nitride and, by adjusting the relative twist angle between the layers, they were able to create multiple moiré pattern—“the first time anyone has seen the full rotational dependence of coexisting moiré superlattices in one device.”

Research Results

A four-way switch promises greater tunability of layered materials

November 18, 2019 sarah Jonas 0 Comments Department Of Energy, DOE Office of Science, Ferroelectric, Graphene, Materials, Materials Science, Oak Ridge National Laboratory, Physics

A team from Oak Ridge National Laboratory and Vanderbilt University made the first experimental observation of a material phase that had been predicted but never seen.

Feature

Engineering Living Scaffolds for Building Materials

October 29, 2019 sarah Jonas 0 Comments Chemistry & Materials, Materials, Materials Science

Bone and mollusk shells are composite systems that combine living cells and inorganic components. This allows them to regenerate and change structure while also being very strong and durable. Borrowing from this amazing complexity, researchers have been exploring a new class of materials called engineered living materials (ELMs).

Feature

Location, Location, Location… How charge placement can control a self-assembled structure

October 8, 2019 sarah Jonas 0 Comments Materials, Polymers

For years, scientists have formed polymers using the interaction of charges on molecular chains to determine the shape, geometry, and other properties. Now, a team achieved precise and predictable control of molecular chains by positioning charges. Their method leads to particles with reproducible sizes.

Announcement

UW–Madison, local startup testing a one-two punch against hard-to-heal wounds

September 27, 2019 sarah Jonas 0 Comments BIOCHEMISTRY, Diabetes, Health, Materials

Millions of people with severe burns or diabetic skin ulcers could benefit from an experimental enhancement to a next-generation covering that is already healing difficult wounds.

Feature

Atomically Packed Boundaries Resist Cracking

August 29, 2019 sarah Jonas 0 Comments grain boundaries, Materials, Synthesis, X-ray mapping

Scientists devised specialized X-ray mapping techniques. They determined that boundaries associated with regions where atoms are closely packed together most readily resist cracking. This analysis revealed that when a crack encounters such a boundary, it’s deflected to a less direct path and crack growth is slowed.

Feature

$1.75 million X-ray tool is first of its kind in the U.S.

August 27, 2019 sarah Jonas 0 Comments Binghamton, Binghamton University, Energy, Materials, National Science Foundation, NSF, State University of New York at Binghamton, SUNY Binghamton, X-rays

Binghamton University, State University of New York will acquire a sophisticated new X-ray tool useful in materials research and R&D for electronics. The $1.75 million system — the third of its kind in the world and the first outside of Europe — will be funded by $1.23 million from the National Science Foundation’s Major Research Instrumentation program and additional money from the campus.

Research Results

Scientists can now control thermal profiles at the nanoscale

August 9, 2019 sarah Jonas 0 Comments Materials, Materials Science, nanotechnology

Scientists have tested an experimental system that uses a near-infrared laser to actively heat two gold nanorod antennae to different temperatures. The nanorods are electromagnetically and thermally coupled, yet the team measured reversible temperature differences of up to 20 degrees Celsius.

Research Results

Physicists Make Graphene Discovery that Could Help Develop Superconductors

July 31, 2019 sarah Jonas 0 Comments Electricity, Electronics, Electrons, Energy, Environment, Graphene, Materials, New Jersey, Physics, Rutgers, Rutgers University-New Brunswick

When two mesh screens are overlaid, beautiful patterns appear when one screen is offset. These “moiré patterns” have long intrigued artists, scientists and mathematicians and have found applications in printing, fashion and banknotes. Now, a Rutgers-led team has paved the way to solving one of the most enduring mysteries in materials physics by discovering a moiré pattern in graphene, where electrons organize themselves into stripes, like soldiers in formation.

Michelle Miller and Jia Li/Brown University

Research Results

Research Reveals Exotic Quantum States in Double-Layer Graphene

June 27, 2019June 27, 2019 Author 0 Comments Electrons, Fermion, Graphene, Materials, Quantum, Quantum Hall effect

Findings shed new light on the nature of electron interactions in quantum systems and establishing a potential new platform for