Light bulbs come in many shapes and styles: globes, twists, flame-like candle tips and long tubes. But there aren’t many thin options. Now, researchers report in ACS Applied Materials & Interfaces that they have created a paper-thin LED that gives off a warm, sun-like glow. The LEDs could light up the next generation of phone and computer screens and other light sources while helping users avoid disruptions to their sleep patterns.

Recently, a research team led by Professor Wenfeng Cong from China Agricultural University, in collaboration with Dr. Wopke van der Werf from Wageningen University & Research in the Netherlands, revealed the changing trends of dietary zinc intake among Chinese adults and the underlying reasons by analyzing data from China Health and Nutrition Surveys conducted between 2004 and 2011. The study covered 21,266 adults aged 18–50 from 9 provinces and 3 municipalities directly under the central government in China. The results showed that from 2004 to 2011, the average daily zinc intake of Chinese adults decreased from 11.1 to 9.89 mg, and the proportion of people with insufficient intake increased from 23% to 37%, a growth of more than 60%. Notably, this trend was prevalent across different income groups—although the zinc intake of high-income groups was consistently higher than that of low-income groups, zinc intake in all income strata showed a downward trend. The related paper has been published in Frontiers of Agricultural Science and Engineering (DOI: 10.15302/J-FASE-2024584).

Thermal superinsulation, arising from nanoporous aerogels with pore sizes < 70 nm, involves ultralow heat conduction with a thermal conductivity lower than that of stationary air (24 mW·m⁻¹·K⁻¹). Ultra-flexibility, on the basis of nanofibrous aerogels, demonstrates remarkable flexibility with a compressive strain of approximately 90%, fracture strain of approximately 10% and bending angel of approximately 100%. In Science Bulletin, researchers from Harbin Institute of Technology now fabricate a ceramic aerogel with a unitary core–sheath fiber architecture based on microstructural design, which achieves superior thermal insulation (21.96 mW·m⁻¹·K⁻¹) while retaining nanofiber flexibility (compressive strain of 80% and a bending angle of 100%).

A research team from Peking University Yangtze Delta Institute of Optoelectronics has achieved the device-level implementation of a silica microsphere probe, demonstrating exceptional capabilities in high-sensitivity ultrasonic detection and ultrahigh-frequency vibrational spectroscopy. This advancement facilitates the transition of microsphere resonator technology from controlled laboratory environments to practical instrumentation, showing significant potential for applications in photoacoustic imaging, endoscopic sensing, and non-destructive evaluation.

Levitation has long been pursued by stage magicians and physicists alike. For audiences, the sight of objects floating midair is wondrous. For scientists, it’s a powerful way of isolating objects from external disturbances. This is particularly useful in case of rotors, as their torque and angular momentum, used to measure gravity, gas pressure, momentum, among other phenomena in both classical and quantum physics, can be strongly influenced by friction. Freely suspending the rotor could drastically reduce these disturbances – and now, researchers from the Okinawa Institute of Science and Technology (OIST) have designed, created, and analyzed such a macroscopic device, bringing the magic of near-frictionless levitation down to earth through precision engineering.