Cascaded metasurfaces for dynamic control of THz wavefronts

Electromagnetic (EM) waves in the terahertz (THz) regime contribute to important applications in communications, security imaging, and bio- and chemical sensing. Such wide applicability has resulted in significant technological ...

Radical chemistry enables straightforward synthesis of ethers

Since as far back as the 1850s, synthesizing ethers has involved the same fundamental chemistry. Now, researchers from Japan have expanded the synthetic toolkit for ethers—by using cheap reagents and easy procedures.

Video: European Robotic Arm ready for space

The European Robotic Arm (ERA) will be launched to the International Space Station together with the Russian Multipurpose Laboratory Module, called 'Nauka'. ERA is the first robot able to 'walk' around the Russian segment ...

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