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Multilayer hexagonal boron nitride can be synthesized over large areas and used to enhance mobility in graphene heterostructures, illustrating the potential of the material as an insulator in commercial two-dimensional electronics.
Conventional dielectric layers used in stretchable electronics are solution-processed, thick and have poor electrical performance compared with rigid, inorganic dielectrics. A stretchable nanometre-thick gate dielectric layer has been produced using large-area vacuum deposition. This material has excellent electrical, mechanical and chemical properties and could facilitate the development of high-performance wearable devices.
This Perspective explores the use of flexible electronics in the development of brain–computer interfaces, considering their potential impact on neuroscience, neuroprosthetic control, bioelectronic medicine, and brain and machine intelligence integration.
A skin-like sensory system, consisting of a substrate-less nanomesh strain sensor and an unsupervised meta-learning framework, enables the rapid recognition of various hand movements with minimal training and can work for any user. The device is able to complete various tasks, including virtual keyboard typing and object recognition.
This Perspective explores the potential of large-area electronics in wirelessly powered sensor nodes for the Internet of Things, considering low-power circuits for digital processing and signal amplification, as well as diodes and printed antennas for data communication and radiofrequency energy harvesting.
An embedded 3D printing technique — which uses an alginate–polyacrylamide hydrogel supporting matrix and a conductive silver–hydrogel ink — can be used to fabricate hydrogel electronic devices containing various different embedded circuits.
By controlling ion-dynamic capacitance, electrolyte-gated transistors can be switched between different operating modes, providing flexible neural network implementations.
A compact and energy-efficient magnetoresistive random-access memory (MRAM) technology could help lower the power consumption of data storage and management.
High-electron-mobility transistors with a diamond coating on their top and side surfaces can effectively dissipate heat in high-power electronics applications.
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.
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.
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.
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.
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.
Wearable sweat-sensing devices that use self-powered sensors, electrochromic displays and thin-film batteries can operate free from any connections to bulky external electronics.
