Articles

Using a framework based on optoelectronic polarization eigenvectors and optoelectronic conversion matrixes, an on-chip full-Stokes polarimeter can be created that offers a root mean square error of less than 1% for each Stokes parameter over the entire range of polarization states at arbitrary light intensities.

Substitutionally doped two-dimensional diselenides can be used to make p-type field-effect transistors with reduced contact resistance and good electrostatic control by varying the thickness of the channel and contact regions.

A graphene spin valve that is in close proximity to the ferromagnetic van der Waals material Cr₂Ge₂Te₆ can offer spin generation, transport and detection.

Vertical-nanowire heterojunction tunnelling transistors that are based on the broken-band GaSb/InAs system can offer a drive current of 300 µA µm^−1 and a sub-60 mV dec^−1 switching slope at an operating voltage of 0.3 V.

An echomyography system based on a single transducer can be integrated into a wearable patch and used to monitor breathing patterns and hand gestures.

Ohmic contacts to n-type molybdenum disulfide can be created over a temperature range from millikelvins to 300 K using a window-contacted technique, which leads to evidence for fractional quantum Hall states at filling fractions of 4/5 and 2/5 in the lowest Landau levels of bilayer molybdenum disulfide devices.

Light-emitting diodes with suppressed efficiency roll-off can be created by intercalating oxygen plasma into few-layer molybdenum disulfide and tungsten disulfide.

Multiple stair-like structures can be created in parallel by programmed curing of a photoresin containing liquid metal droplets, which then stratify and assemble to form soft electronic vias.

The on-current performance of MoS₂-based transistors can be improved by using silicon nitride capping layers that apply strain to the devices.

Memristors with on/off ratios up to 10⁸ and analogue resistive switching can be created using the intercalation/de-intercalation of silver ions in a two-dimensional metallic electrode to modulate ion migration.

A textile metamaterial sensor can wirelessly measure biomarkers—such as heart rate and respiration—in vehicles and shows no accuracy degradation when operating in moving environments.

An interfacial junction transistor based on a molybdenum disulfide/graphene heterostructure can generate tunable π-shaped and Gaussian-like membership functions, allowing membership function generators for fuzzy logic systems to be implemented with low device count and energy cost.

Tiers containing graphene-based sensors and molybdenum disulfide-based processors can be vertically stacked using a monolithic integration process, with an interconnect density of 62,500 per mm².

Using an adhesive buffer layer and a high-resolution six-channel inkjet printing system, arrays of stretchable organic electrochemical transistors can be fabricated for application in wearable in-sensor computing platforms.

The perpendicular Néel order in a collinear antiferromagnetic insulator—chromium oxide—can be switched by 180° via the spin–orbit torque with a low current density of 5.8 × 10⁶ A cm^−2 and read out via the anomalous Hall effect.

An acoustic sensor that is based on a network of magnetic nanoparticles suspended in a carrier fluid can be used—together with a machine learning algorithm—to create a wearable voice recognition system with an accuracy of 99% in a noisy environment.

A high-κ dielectric ceramic, magnesium niobate, can be epitaxially grown on a mica substrate and then transferred to form the gate dielectric in molybdenum disulfide transistors, providing van der Waals interfaces and high robustness to temperature and voltage.

A semifloating molybdenum disulfide homojunction exhibits a photoelectric response with a tunable amplitude and relaxation time, which can be used for reconstructive spectroscopy with high resolution and a small device footprint.

A sensor that consists of a catechol-conjugated alginate hydrogel adhesive, a stretchable 16-channel electrode array and a viscoplastic self-healing polymeric substrate, and is coupled to a pulse-controlled transcranial focused ultrasound device, can be used for closed-loop transcranial ultrasound neurostimulation.

A wireless monitoring system that integrates an organic electrochemical transistor and a near-infrared inorganic micro-light-emitting diode on a thin parylene substrate can be used to monitor biomarkers such as glucose, lactate and pH.