Encapsulated microbubbles (EMBs) are vital in ultrasound imaging and emerging drug-delivery technologies. To analyze their behavior in blood, researchers from Nagoya Institute of Technology developed a detailed numerical framework that tracks the dynamics of EMBs near rigid walls in viscoelastic fluids. By combining the Oldroyd B model with the boundary element method, they demonstrated how shell thickness, viscoelasticity, and ultrasound parameters influence EMB dynamics, providing key insights for their safer design.

As global temperatures continue to rise, scientists are working to understand how warming affects the planet’s carbon cycle. A new study published in Biocontaminant reveals that higher temperatures significantly alter how aquatic microbes process carbon released during the decomposition of animal carcasses, with important implications for water quality and climate change predictions.

Due to the unique conditions of the space environment and abundant resources, the field investigation and study of the Moon, Earth’s sole natural satellite, represent a crucial milestone in China’s forthcoming deep space endeavors. The successful collection of lunar soil by the Chang’E-5 mission signifies the next phase of the lunar exploration program, which aims to establish a preliminary research station on the lunar south pole. Highly adhesive fine dust particles with an adhesion strength of 0.1 to 1.0 kN/m², which originate from the regolith, disperse throughout the lunar surface. These particles exhibit a lasting attraction and subsequent persistent adhesion to the surface of spacecraft or spacesuits. The accumulation of highly adhesive dust on spacecraft presents a serious issue to hinder long-term extravehicular activity and the establishment of a permanent station on lunar surface. In contrast to the immediate physical damage caused by hypervelocity (> 1.0 km/s) impacts, this adhesion observed at low- velocity (0.01 to 100 m/s) collisions can more unobtrusively and mortally degenerate the performance of equipment. In recent years, many interaction models have been developed to forecast the adhesion and ejection dynamics of lunar dust on various surfaces. Most researches on the electrostatic force applied on dust particles near the surface use point-charge approximation. Although this simplification makes the simulation easier, the error can be large due to the polarization of dust induced by the image charge.

Recently, the team led by Guoqi Li and Bo Xu from the Institute of Automation, Chinese Academy of Sciences, published a research paper in National Science Review. The team, drawing on principles from neuroscience, proposed an innovative neuromorphic spike-based large language model, aimed at enhancing the energy efficiency and interpretability of LLMs. This research not only opens new directions for the development of efficient AI but also provides valuable insights for the design of next-generation neuromorphic chips.

Researchers report a stacked tunable metasurface that integrates sharp frequency filtering with polarization and spectral reconfigurability, overcoming a trade-off between high selectivity and rich tunability in metasurface designs. Microwave experiments demonstrate steep bandpass responses, strong out-of-band suppression, and dynamic multi-channel operation. This work offers a promising framework for addressing key demands for reconfigurability, multiplexing, and interference immunity in modern electromagnetic systems.

 

Researchers in China conducted a comprehensive overview of the fabrication of magnetic robotic materials, structural design, actuation systems, and their application scenarios. In terms of fabrication, permanent magnetic particles are discussed. Structural design encompasses one-dimensional, two-dimensional, and three-dimensional architectures, as well as bio-inspired structures. The actuation systems primarily introduce coil-based mechanisms and permanent magnet-based approaches. Application scenarios mainly include targeted drug delivery and minimally invasive surgery, among others.