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Confocal fluorescence microscopy and magnetic resonance can be used to induce and probe charge transport between individual nitrogen-vacancy centres in diamond.
The ferroelectric polarization of epitaxial thin films of germanium telluride can be switched by electrical gating and used to control spin-to-charge conversion.
Electrically induced transitions between hexagonal and monoclinic phases of molybdenum ditelluride can be used to make a second-harmonic-generation modulator with an on/off ratio of 1,000 and a broad bandwidth.
Arrays of memcapacitor devices that work via charge shielding can be used to implement artificial neural networks and could potentially offer an energy efficiency of 29,600 tera-operations per second per watt.
Phased array systems capable of beamforming at microwave frequencies can be created from large-area electronics based on zinc oxide thin-film transistors.
A light-detection electrochemical cell that is based on vertically aligned p–n heterojunction nanowires in an electrolyte environment can exhibit a photoresponse in which the polarity is reversed depending on the wavelength of light.
Two-dimensional arrays of quantum dot light-emitting diodes can be folded into three-dimensional architectures—including a passive matrix array that can display letters and numbers—by using laser patterning and metal etch-stop layers to create folding lines.
X-ray flat-panel detector arrays with high spatial resolution and sensitivity can be created using a two-step manufacturing process that separates the fabrication of microcrystalline methylammonium lead triiodide absorber wafers from their integration on pixelated backplanes.
Carriers in a molybdenum disulfide transistor can be modulated without decreasing mobility by remote doping and charge transfer through a van der Waals heterostructure, which avoids dopant-induced impurity scattering in the channel.
Narrow, long graphene nanoribbons with atomically smooth and defect-free edges can be produced by squashing carbon nanotubes, and can be used to fabricate a sub-3-nm-wide channel field-effect transistor with a mobility of 2,443 cm2 V−1 s−1.
Small electronic devices can be wirelessly powered from anywhere in a room using multidirectional surface currents that generate widely distributed three-dimensional magnetic field patterns.
Wirelessly powered microchips, which have an ~1 GHz electromagnetic transcutaneous link to an external telecom hub, can be used for multichannel in vivo neural sensing, stimulation and data acquisition.
Microscale three-dimensional thermoelectric architectures can be fabricated through the direct writing of particle-based thermoelectric inks and used to create microthermoelectric generators that exhibit a power density of 479.0 μW cm–2.
A smartphone-based system that uses deep learning algorithms for local decision support, and incorporates blockchain technology to provide secure data connectivity and management, can be used for multiplexed DNA diagnosis of malaria.
An Ising solver that is based on a network of electrically coupled phase-transition nano-oscillators, which provides a continuous-time dynamical system, can be used to efficiently solve a non-deterministic polynomial time (NP)-hard MaxCut problem.
An organic transistor that incorporates two bulk heterojunctions can exhibit active photoadaptation behaviour for light intensities that range over six orders of magnitude.
Through the monolithic integration of enhancement-mode n-type and p-type gallium nitride field-effect transistors, complementary integrated circuits including latch circuits and ring oscillators can be created for use in high-power and high-frequency applications.
Organic n- and p-type vertical transistors, with considerably shorter channel lengths than their planar counterparts, can be used to create complementary metal–oxide–semiconductor (CMOS)-like inverters and ring oscillators that operate in the megahertz frequency range.
Domain wall devices based on perpendicular magnetic tunnel junctions with a hybrid free layer design can offer electrical read and write, and fast domain wall motion driven via spin–orbit torque.