Novel theory of entropy may solve materials design issues

A challenge in materials design is that in both natural and manmade materials, volume sometimes decreases, or increases, with increasing temperature. While there are mechanical explanations for this phenomenon for some specific ...

Progress and prospects in magnetic topological materials

A new review paper on magnetic topological materials introduces a theoretical concept that interweaves magnetism and topology. It identifies and surveys potential new magnetic topological materials and suggests possible future ...

Double locked: Polymer hydrogels secure confidential information

The development of highly secure but simple and inexpensive encryption technology for the prevention of data leaks and forgeries is decidedly challenging. In the journal Angewandte Chemie, a research team has introduced a ...

Data confirm link between respiratory stress and fish reproduction

A consistent metabolic ratio found across 133 Chinese marine and freshwater fish species provides new evidence in support of the idea that fish become sexually active—and spawn for the first time—in response to growth-induced ...

New method to produce composites with 'shape memory'

Skoltech researchers have investigated a promising type of composite material in terms of their shape memory behavior—how they resume their original shape following deformation if exposed to the right temperature or other ...

Programmable structures from the printer

Researchers at the University of Freiburg and the University of Stuttgart have developed a new process for producing movable, self-adjusting materials systems with standard 3D printers. These systems can undergo complex shape ...

Water droplets become hydrobots by adding magnetic beads

Using a piece of magnet, researchers have designed a simple system that can control the movement of a small puddle of water, even when it's upside down. The new liquid manipulation strategy, described in the journal Cell ...

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