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The correlated optoelectronic characteristics of multi-terminal mixed-dimensional graphene–germanium heterostructure devices can be used for the accurate detection and robust tracking of dim targets.
Polycrystalline thin films of elemental bismuth exhibit a room-temperature nonlinear transverse voltage due to geometric effects of surface electrons that is tunable and can be extended to efficient high-harmonic generation at terahertz frequencies.
An electronic skin that is capable of long-term monitoring of vital signs and molecular biomarkers in sweat can—with the help of machine learning—be used to classify stress responses with high accuracy and predict state anxiety levels with high reliability.
A biomimetic olfactory system that integrates nanotube sensor arrays with up to 10,000 individually addressable sensors per chip can offer high sensitivity to various gases with excellent distinguishability for mixed gases and 24 distinct odours.
An inverter that uses a self-biased molybdenum disulfide homojunction as the load and n-type transistor as the driver can exhibit lower static power than complementary metal–oxide–semiconductor (CMOS) or pseudo-n-type metal–oxide–semiconductor (NMOS) architectures.
An acoustic resonator that uses a three-dimensional silicon fin and an atomic-layered hafnia-zirconia ferroelectric transducer can be integrated into chip-scale filter arrays to make adaptive switch-free spectral processors for wireless communication.
A thin elastic conductive nanocomposite that is formed by cryogenically transferring laser-induced graphene to a hydrogel film can be used to create multifunctional sensors for on-skin monitoring and cardiac patches for in vivo detection.
An artificial intelligence hardware approach that uses the adaptive reservoir computation of biological neural networks in a brain organoid can perform tasks such as speech recognition and nonlinear equation prediction.
A transfer technique that embeds a van der Waals interface of interest in a high-adhesion matrix can decouple the properties of the functional interface from the forces required for its fabrication, providing single-step material-to-device integration.
Processes to recapture and reuse organic electronic materials—including conductors, semiconductors and dielectrics—using non-toxic solvents allow flexible, wearable electronic devices to be recycled sustainably.
The mechanical properties of sheet-like devices can be transformed via thermal modulation from an elastic state suitable for smoothing out wrinkles formed during crumpling to a plastic state suitable for free-standing operation.
A spin–orbit torque efficiency of around 2.7 can be achieved in heterostructures based on the bismuthate BaPb1−xBixO3, which can be used to drive magnetization switching at current densities of 4 × 105 A cm−2.
Membranes made of metal-coated silicon nitride can be used to assemble van der Waals heterostructures without a polymer support layer, thus improving cleanliness and allowing assembly at more extreme temperature and vacuum conditions.
Through layer-by-layer mechanical peeling, the channel region of a multilayer black phosphorus transistor can be reduced to a monolayer thickness without degrading its lattice and while retaining a multilayer contact region.
A haptic interface that uses thermal, mechanical and electrotactile modes of stimulation to target different receptors in the skin can provide users with diverse haptic sensations, reproducing the tactile information of fine roughness, macro roughness, slipperiness, force and temperature.
Rhombohedral-stacked molybdenum disulfide with sliding ferroelectric behaviour can be used to create atomically thin ferroelectric transistors for computing-in-memory device applications.
Memristors based on electric-field-induced phase transitions between a semiconducting and conductive phase of molybdenum ditelluride can be improved by using stressed metal contacts to strain the material closer to the phase switching point.
An ultrasound patch that is based on multiple phased arrays of rare-earth-doped ceramic piezoelectric transducers on a stretchable substrate can be conformably attached to the surface of the body for a large field of view and operator-independent imaging of deep organs.