Materials for devices

Inspired by fast running cheetahs, the authors present a class of small-scale soft electromagnetic robots able to reach ultra-high running speeds of 70 BL/s (body lengths per second) as well as the ability to swim, jump, steer and transport cargo.

Near-infrared perovskite light-emitting diodes with extrapolated device lifespans on the scale of years are achieved by the use of a dipolar molecular stabilizer.

An artificial neuron that detects dopamine using a carbon-based electrochemical sensor and then processes the sensory signals using a memristor with synaptic plasticity, before stimulating dopamine release via a heat-responsive hydrogel, can be used to trigger the controllable movement of a mouse leg and robotic hand.

Realizing fast nonvolatile floating gate memories is constrained by the slow tunnelling mechanism for charge injection. Here, Chen et al. demonstrate operation speed of 20 ns and power consumption of 10 fJ using graphdiyne oxide as a threshold switching layer instead of a dielectric blocking layer.