Volume 5 Issue 11, November 2022

A reconfigurable device based on two-dimensional materials can function as both a transistor and a memory.

Artificial synapses made of indium selenide can exhibit tunable temporal dynamics, which can be used to achieve multisensory fusion and multiple-timescale feature extraction in reservoir computing.

A stretchable and conductive micrometre-thick elastic conductor, which has a controlled morphology of microcracks, can be used in on-skin and implantable sensor applications.

A flexible sensor interface integrated into different commercial face masks can be used to measure breathing patterns, skin temperature, physical activity and the fit of the mask itself.

An organic artificial spiking neuron based on nonlinear ionoelectronic phenomena is reported that is sensitive to ionic and biomolecular species common in neuronal signalling. The neuron realistically emulates the function and firing properties of biological neurons and enables biohybrid interfaces made of artificial and biological components that function in real time.

This Review examines the use of multidimensional architectures—such as superjunction, multi-channel and multi-gate technologies—in power electronics devices, exploring the performance limits, scaling and material figure of merits of the different architectures.

By combining vector magnetometry and magneto-transport measurements of epitaxial films with different crystallographic orientations, an anomalous Hall effect can be measured in collinear altermagnetic ruthenium dioxide with an anomalous Hall conductivity exceeding 1,000 Ω^–1 cm^–1.

Gate-tunable heterojunction diodes—or triodes—that are based on van der Waals heterostructures formed from two-dimensional indium selenide and three-dimensional silicon can exhibit subthreshold slopes of 6.4 mV decade^–1 and on-state current densities of 0.3 µA µm^–1 at a drain bias of –1 V.

A van der Waals heterostructure that has a partial floating-gate field-effect transistor device architecture can function as both reconfigurable transistor and reconfigurable non-volatile memory, and can provide reconfigurable logic-in-memory capabilities.

A reservoir computing system for multimode and multiscale signal processing can be created using optoelectronic synapses that are based on α-In₂Se₃ and exploit the tightly coupled ferroelectric and optoelectronic properties of the material.

An organic artificial neuron that is based on a compact nonlinear electrochemical element can operate in a liquid and responds to the concentration of biological species in its surroundings, allowing its behaviour to be modulated, for example, by interfacing with the membranes of living cells.

Polydimethylsiloxane–gold conductors that are 1.3 μm thick and have controlled morphology of microcracks in the gold film can be used to create breathable and water-resistant electrodes for recording electrocardiogram signals, as well as on-skin pressure sensors and implantable nerve electrodes.

A conformable sensory interface that can be attached to the inside of any user-supplied face mask can be used to monitor signals related to infectious diseases, environmental conditions and wear status of the face mask.

A 1-bit space–time-coding metasurface antenna can extract and mould guided waves into any desired free-space waves in both space and frequency domains.