Metal–amide chemistry provides a rational approach to controlling heavy-pnictogen reduction, paving the way for safer and more scalable semiconductor quantum dots.

Researchers have developed an optical fiber that uses laser-induced heating and bubble-driven convection to rapidly concentrate bacteria and nanoparticles in liquid samples. The method collects thousands of targets in 60 seconds with over tenfold higher efficiency than conventional approaches. This approach allows for faster and more sensitive detection in biomedical and environmental applications.

Researchers have developed a bioinspired cellulose-based cooling aerogel capable of reflecting nearly all incoming sunlight while efficiently releasing heat through the atmospheric infrared window. Inspired by the optical structure of white beetles, the material integrates nanocellulose and hygroscopic metal-organic frameworks to construct a hierarchical photonic scattering network spanning nanoparticles, microfibers, and macropores. The resulting aerogel achieved a solar reflectance of 95.8% and an infrared emissivity of 95%, enabling subambient daytime cooling of up to 7.1 °C under outdoor sunlight. The biodegradable material also demonstrated strong UV durability and the potential to reduce annual cooling energy consumption in buildings by more than 40% in hot regions of China.

Researchers have developed a lightweight cellulose/MXene sediment aerogel capable of simultaneously delivering electromagnetic interference shielding, infrared stealth, and low-voltage Joule heating. By combining TEMPO-oxidized cellulose nanofibers with MXene sediment through hydrogen bonding and Zr⁴⁺ ionic crosslinking, the team achieved a robust porous aerogel fabricated entirely through ambient-pressure drying. The material reached an EMI shielding effectiveness of 73.2 dB, exhibited effective infrared camouflage behavior, and rapidly heated to over 100 °C under only 2.5 V, demonstrating strong potential for wearable thermal management, spectra-compatible defense, and advanced electromagnetic protection systems.

A study recently published in the Journal of Bioresources and Bioproducts reports a bioinspired multi-network photonic hydrogel capable of decoupling the traditional trade-off between optical performance and mechanical robustness in mechanochromic materials. The researchers designed a cellulose nanocrystal/polyacrylamide/waterborne polyurethane (CPW) hydrogel featuring a triple-network architecture inspired by octopus iridophores. Through dynamic hydrogen bonding and interpenetrating structural design, the hydrogel achieved a tensile strength of 420 kPa and elongation exceeding 800% while maintaining highly reversible structural color changes from near-infrared to the full visible spectrum. Reflection wavelengths shifted continuously from 467 to 670 nm during stretching, enabling reversible color transitions from blue to red. The material further demonstrated strain-dependent optical encoding and information concealment capabilities with excellent cyclic stability and low-temperature tolerance. The work provides a new strategy for designing intelligent bio-based photonic materials suitable for advanced optical devices and adaptive sensing systems.

Researchers at The University of Osaka have developed a strategy to make aggregates of nanoparticles plastically deform under heating. Anionic groups are introduced onto the surfaces of cellulose nanofibers and paired with cations from an ionic liquid. At high temperatures, the cations diffuse across the interfaces between the nanofibers in the aggregates, enabling the aggregates to expand. This study is the first time nanoparticle aggregates have been thermoformed without loss of nanoparticle shape or crystallites.