First-ever direct observation of chiral currents in quantum Hall atomic simulation

First-ever direct observation of chiral currents in quantum Hall atomic simulation
Using an atomic quantum simulator, scientists at the University of Illinois at Urbana-Champaign have achieved the first-ever direct observation of chiral currents in the model topological insulator, the 2-D integer quantum Hall system. Topological Insulators (TIs) are arguably the most promising class of materials discovered in recent years, with many potential applications theorized. That's because TIs exhibit a special quality: the surface of the material conducts electricity, while the bulk a…
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Nanoparticle vaccine shows potential as immunotherapy to fight multiple cancer types

Nanoparticle vaccine shows potential as immunotherapy to fight multiple cancer types
Researchers from UT Southwestern Medical Center have developed a first-of-its-kind nanoparticle vaccine immunotherapy that targets several different cancer types. The nanovaccine consists of tumor antigens -- tumor proteins that can be recognized by the immune system -- inside a synthetic polymer nanoparticle. Nanoparticle vaccines deliver minuscule particulates that stimulate the immune system to mount an immune response. The goal is to help people's own bodies fight cancer. "What is unique abo…
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Freezing lithium batteries may make them safer, bendable

Freezing lithium batteries may make them safer, bendable
Yuan Yang, assistant professor of materials science and engineering at Columbia Engineering, has developed a new method that could lead to lithium batteries that are safer, have longer battery life, and are bendable, providing new possibilities such as flexible smartphones. His new technique uses ice-templating to control the structure of the solid electrolyte for lithium batteries that are used in portable electronics, electric vehicles, and grid-level energy storage. The study is published onl…
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Self-assembled nanostructures can be selectively controlled

Self-assembled nanostructures can be selectively controlled
Plasmonic nanoparticles exhibit properties based on their geometries and relative positions. Researchers have now developed an easy way to manipulate the optical properties of plasmonic nanostructures that strongly depend on their spatial arrangement. The plasmonic nanoparticles can form clusters, plasmonic metamolecules, and then interact with each other. Changing the geometry of the nanoparticles can be used to control the properties of the metamolecules. "The challenge is to make the structur…
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Revealing the mystery behind the formation of hollowed nanoparticles during metal oxidation

Revealing the mystery behind the formation of hollowed nanoparticles during metal oxidation
Rust usually indicates neglect; it undermines the structures and tools we rely on every day, from cars to bridges and buildings. But if carefully controlled, the same process that creates rust -- metal oxidation -- could offer scientists ways to advance state-of-the-art battery or drug delivery technologies. To achieve such control, scientists must first understand exactly how the oxidation process works. With the help of supercomputers and synchrotrons, researchers at the U.S. Department of Ene…
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Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Wonder material? Novel nanotube structure strengthens thin films for flexible electronics
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics. "The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including bi…
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Nanoimprinted hyperlens array: Paving the way for practical super-resolution imaging

Nanoimprinted hyperlens array: Paving the way for practical super-resolution imaging
The concept of a perfect lens that can produce immaculate and flawless images has been the Holy Grail of lens makers for centuries. In 1873, a German physicist and optical scientist by the name of Ernst Abbe discovered the diffraction limit of the microscope. In other words, he discovered that conventional lenses are fundamentally incapable of capturing all the details of any given image. Since then, there have been numerous advances in the field to produce images that appear to have higher reso…
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Faster biosensor for healthcare now developed

Faster biosensor for healthcare now developed
DGIST research team led by Professor CheolGi Kim has developed a biosensor platform which has 20 times faster detection capability than the existing biosensors using magnetic patterns resembling a spider web. The sensing capability of a biosensor is determined by the resolution of the sensor and the movement and reaction rate of molecules. Many research groups in Korea and other countries have been improving the resolution through the development of nanomaterials but there has been a limitation …
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