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The core of a nuclear reactor presents exceptionally stringent requirements for structuralmaterialsduetoitshightemperatureandintenseradiationaswellasitsneed for unfailing mechanical integrity [1][2][3][4] . Thus, candidate materials for nuclear applications must possess excellent irradiation tolerance, high strength, and thermal stability.However,thesepropertiesaredifficulttorealizesimultaneouslyinonematerialbecause of apparently intrinsic tradeoffs between them. Here we report a novel interface engineering strategy that simultaneously achieves superior irradiation tolerance, high strength, and high thermal stability in bulk nanolayered (NL) Cu-Nb composites. By synthesizing bulk NL Cu-Nb composites containing interfaces with controlled sink efficiencies, we design a material in which nearly all irradiation-induced defects are

Modification of polymers by ion irradiation improves their effective charge density due to the generation of electron-donating groups.

Tactile sensation plays important roles in virtual reality and augmented reality systems. Here, a self-powered, painless, and highly sensitive electro-tactile (ET) system for achieving virtual tactile experiences is proposed on the basis of triboelectric nanogenerator (TENG) and ET interface formed of ball-shaped electrode array. Electrostatic discharge triggered by TENG can induce notable ET stimulation, while controlled distance between the ET electrodes and human skin can regulate the induced discharge current. The ion bombardment technique has been used to enhance the electrification capability of triboelectric polymer. Accordingly, TENG with a contact area of 4 cm2 is capable of triggering discharge, leading to a compact system. In this skin-integrated ET interface, touching position and motion trace on the TENG surface can be precisely reproduced on skin. This TENG-based ET system can work for many fields, including virtual tactile displays, Braille instruction, intelligent protective suits, or even nerve stimulation.

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