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The analogue tuning properties of memristors can be used to create physically unclonable functions, a type of hardware security primitive that draws its cryptographic keys from physical variations created during device fabrication. The schematic illustration on the cover highlights the experimental implementation of these ‘digital fingerprints’, which rely on vertically integrated metal-oxide memristive crossbar circuits.
This Review Article examines the development of wearable sweat sensors, considering the challenges and opportunities for such technology in the context of personalized healthcare.
The anomalous Hall effect has been observed in high-quality epitaxial thin films of non-collinear antiferromagnet Mn3Pt, and can be switched on and off using an electric field.
Nonlinear circuit arrays can exhibit self-induced topological transitions as a function of input intensity and topological immunity against defects and disorder.
Using carbon nanotube transistors, stretchable temperature sensor circuits can be designed that suppress strain-dependent errors and achieve a measured inaccuracy of only ±1 °C within a uniaxial strain range of 0–60%
High-performance carbon nanotube thin-film transistors and complementary circuits can be fabricated on flexible substrates, including ring oscillators that have a stage delay of only 5.7 ns.
By exploiting the nonlinear and analogue tuning properties of memristors, robust security primitives can be fabricated using integrated memristive crossbar circuits.
Progress in portable and ubiquitous electronics would not be possible without rechargeable batteries. John B. Goodenough recounts the history of the lithium-ion rechargeable battery.