An article in Science Advances presents a material that can intrinsically change colour depending on the incoming light.

An article in Nature Materials reports the synthesis of single crystals of ultrathin gadolinium pentoxide (Gd2O5) that combine a high dielectric constant of 25.5 and a wide bandgap of almost 7 eV.

The researchers — who are based at Nanjing Forestry University, the Nanjing University of Science and Technology, the Northeast Forestry University, South China Agricultural University and Scion — used a transparent wood film substrate and a conductive cellulose-based ink to fabricate flexible electronics that can be bent, folded and rolled. To make the transparent substrate, a delignification process

The researchers — who are based at the Hong Kong University of Science and Technology, the City University of Hong Kong and the École Polytechnique Fédérale de Lausanne — tune the spatial organization of biomolecular inks through electrohydrodynamic aerosolization and in situ electrical poling. Films printed from β-glycine–polyvinylpyrrolidone have a piezoelectric voltage coefficient of 190 × 10−3

The researchers — who are based at the University of Illinois Urbana-Champaign — show that in certain compound semiconductors the defects self-organize into electrically neutral complexes. These push deep-level traps closer to the conduction band edge, where they act as donors. So rather than degrade performance, the CuIn5Se8 field-effect transistors with introduced defects show better performance

Correction to: Nature Electronics https://doi.org/10.1038/s41928-024-01265-2, published online 6 November 2024.

By examining how the noise changed at varying temperature and gate biases, the researchers — who are based at New York University, the Korea Advanced Institute of Science and Technology, King Abdulaziz City for Science and Technology, Brookhaven National Laboratory and the National Institute for Materials Science — could attribute the origins of the random telegraph signals to a single trap species

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Advancements in materials science are central to space exploration, but equally important is addressing societal implications to ensure responsible and sustainable progress.

The emergence of artificial intelligence (AI) in military operations is revolutionizing modern warfare — a development that demands robust governance frameworks to mitigate the risks. On 9–10 September 2024, at the Responsible AI in the Military Domain (REAIM) meeting in Seoul, South Korea, a notable advance in military AI governance was achieved. The meeting, which was co-hosted by South Korea, the