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  • An acoustoelectric amplifier based on a three-layer heterostructure design could be used to create all-acoustic radiofrequency microsystems.

    • Siddhartha Ghosh
    News & Views
  • 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.

    • Shaoxing Qu
    News & Views
  • By controlling ion-dynamic capacitance, electrolyte-gated transistors can be switched between different operating modes, providing flexible neural network implementations.

    • Radu A. Sporea
    News & Views
  • A compact and energy-efficient magnetoresistive random-access memory (MRAM) technology could help lower the power consumption of data storage and management.

    • Atsufumi Hirohata
    News & Views
  • High-electron-mobility transistors with a diamond coating on their top and side surfaces can effectively dissipate heat in high-power electronics applications.

    • Jae-Hyun Ryou
    • Sukwon Choi
    News & Views
  • 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.

    • Jihong Min
    • Yu Song
    • Wei Gao
    News & Views
  • A reconfigurable device based on two-dimensional materials can function as both a transistor and a memory.

    • Dayane Reis
    News & Views
  • 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.

    • Muhammad Adeel
    • Yasin Cotur
    • Firat Güder
    News & Views
  • 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.

    • Zhongming Wei
    News & Views
  • A hybrid superconducting optoelectronic circuit could be used to develop spiking neuromorphic networks that operate at the single-quantum level.

    • Alessandro Casaburi
    • Robert H. Hadfield
    News & Views
  • 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.

    • Amay J. Bandodkar
    News & Views
  • With the help of two different kinds of memristor, a low-power, fully analogue reservoir computing system can be created for use in high-accuracy arrhythmia detection and dynamic gesture recognition.

    • Xiaobing Yan
    News & Views
  • Unreleased acoustic resonators fabricated in commercial fin-field-effect-transistor technology could be used in multigigahertz signal processing.

    • Ming-Huang Li
    News & Views
  • Silicon-based dual-gate photodiodes with electrostatically controlled photocurrents can be used to create imaging systems that can compute incoming visual data.

    • Yang Chai
    News & Views
  • Three-dimensional computing systems made of vertically integrated complementary metal–oxide–semiconductor circuits and layered resistive memory can perform analogue computing-in-memory with high energy efficiency.

    • Injune Yeo
    • Jae-sun Seo
    News & Views
  • Carbon nanotube field-effect transistors that are fabricated using aligned nanotube arrays exhibit an identical sequence of random ternary bits, which can be separated and used to generate security keys for encrypted communications.

    • Satish Kumar
    News & Views
  • A reconfigurable integration technology based on stackable chips with embedded arrays of optoelectronic devices and memristive crossbars could be of use in edge intelligence applications.

    • Shi-Jun Liang
    • Feng Miao
    News & Views
  • The phase, frequency and amplitude of gigahertz acoustic waves can be electrically controlled in a lithium niobate waveguide at millikelvin temperatures.

    • Anton Frisk Kockum
    News & Views