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Materials Science Oct 3, 2019

How long does memory last? For shape memory alloys, the longer the better

Known to many as muscle wire or memory metal, shape memory alloys are materials that can be bent or deformed, and then return to their original shape when heat is applied. While people are most familiar with the material ...

Analytical Chemistry Sep 25, 2019

Multimodal X-ray and electron microscopy of the Allende meteorite

Multimodal microscopy can combine complementary nanoscale imaging techniques to extract comprehensive information on the chemical, structural and functional aspects of heterogenous samples. X-ray microscopy can achieve high-resolution ...

Bio & Medicine Sep 6, 2019

Creating new opportunities from nanoscale materials

A hundred years ago, "2d" meant a two-penny, or 1-inch, nail. Today, "2-D" encompasses a broad range of atomically thin flat materials, many with exotic properties not found in the bulk equivalents of the same materials, ...

Environment Sep 5, 2019

Tiny airborne particles from wildfires have climate change implications

Wildfires are widespread across the globe. They occur in places wherever plants are abundant—such as the raging fires currently burning in the Brazilian Amazon. Such biomass burning (BB) can be an environmental calamity.

Quantum Âé¶¹ÒùÔºics Aug 20, 2019

Stacked graphene layers act as a mirror for electron beams

Stacked layers of graphene can act like a mirror for beams of electrons. Âé¶¹ÒùÔºicists Daniël Geelen and colleagues discovered this using a new type of electron microscope. In an article in Âé¶¹ÒùÔºical Review Letters, they describe ...

Analytical Chemistry Aug 8, 2019

Live mitochondria seen in unprecedented detail: photobleaching in STED microscopy overcome

Light microscopy is the only way in which we can look inside a living cell, or living tissues, in three dimensions. An electron microscope only gives a two-dimensional view, and the organic sample would quickly burn up due ...

General Âé¶¹ÒùÔºics Aug 5, 2019

Âé¶¹ÒùÔºicists measure how electrons in transition metals get redistributed within fraction of optical oscillation cycle

Researchers in the Department of Âé¶¹ÒùÔºics of ETH Zurich have measured how electrons in so-called transition metals get redistributed within a fraction of an optical oscillation cycle. They observed the electrons getting concentrated ...

Cell & Microbiology Jul 17, 2019

Plant viruses may be reshaping our world

The community of viruses is staggeringly vast. Occupying every conceivable biological niche, from searing undersea vents to frigid tundra, these enigmatic invaders, hovering between inert matter and life, circumnavigate the ...

Analytical Chemistry Jul 16, 2019

Direct synthesis of hydrogen peroxide using TS-1 supported catalysts

Hydrogen peroxide (H2O2) has many industrial uses, from water treatment and bleaching to chemical synthesis. Although the current process for producing it is highly efficient, it requires a large infrastructure. Work recently ...

Bio & Medicine Jul 12, 2019

Nanotechnology delivers hepatitis B vaccine

Brazilian and European researchers have demonstrated exactly how a nanotechnology-based compound delivers an oral vaccine against hepatitis B to the immune system. When particles containing silica and an antigen combine, ...

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