Volume 7

  • No. 5 May 2024

    Microdevices find their place on conformable substrates

    High-density arrays of microdevices can be site-selectively integrated on conformable substrates with the help of a velocity-controlled dip-transfer coating method that selectively deposits an adhesive precursor on the surface of the devices. The photograph on the cover shows a four-by-four array of blue micro-light-emitting diodes (microLEDs) that were assembled using the approach and are wrapped around a cylindrical rod.

    See Yoon et al.

  • No. 4 April 2024

    Two in one with three terminals

    A three-terminal gallium nitride (GaN)-based p‒n diode can operate as a light emitter or a detector. The scanning electron microscopy image on the cover highlights the structure of the three-terminal diode, which functions as a tunable light-emitting diode with a built-in bias tee circuit and a detector with a reconfigurable optoelectronic logic function.

    See Memon et al.

  • No. 3 March 2024

    An elemental nonlinear Hall effect

    Thin films of the element bismuth — an environmentally friendly and scalable material — can exhibit a tunable room-temperature nonlinear Hall effect, which could be of use in the development of optoelectronic devices. The scanning electron microscopy image on the cover shows a bismuth Hall cross device, which is used to explore magnetotransport and the nonlinear Hall effect in the polycrystalline thin films.

    See Makushko et al. and News & Views by Belosevich et al.

  • No. 2 February 2024

    3D resonators for spectral processors

    Spectral processors for wireless communication can be created using acoustic resonators made from 3D silicon nano-fins with hafnia–zirconia ferroelectric gates wrapped around them. The scanning electron microscopy image on the cover shows an array of filters created by electrically coupling 3D resonators with different frequencies, with the different devices highlighted by different false colours.

    See Hakim et al.

  • No. 1 January 2024

    Recapture and reuse

    With the help of processes that can recycle organic conductors, semiconductors and dielectrics, flexible electronic devices can be created in which each component of the device can be recaptured and reused. The computer-generated image on the cover shows a flexible electronic device developed using this closed-loop recycling approach.

    See Park et al.