As the core hub of inland waterway transportation, ship locks bear the important mission of ensuring the passage of ships and connecting waterway transportation. The safety and stability of their metal structures are directly related to shipping safety and smooth logistics. Metal components such as gates, hoists, and chambers are susceptible to long-term water flow impacts, ship collisions, and temperature stresses, which can lead to hidden dangers such as tilting and deformation.

In the microscopic world, the "spin" of electrons is one of their fundamental properties, akin to tiny magnetic needles. Many macroscopic characteristics of materials, such as the magnetism of magnets or the zero resistance of superconductors, originate from the alignment and interactions of these microscopic "magnetic needles.".

Fetal movement is a crucial indicator of the proper development of the fetal nervous and musculoskeletal systems. However, approximately 15% of pregnant women experience reduced fetal movement, which is often associated with fetal death or stillbirth. A healthy fetus typically cycles between activity and quietness every 30 to 40 minutes, while a compromised fetus may reduce movement to conserve oxygen—a change that may occur before stillbirth.

In the operation and maintenance system of rotating machinery, the bearing bush, as a core component connecting the rotor and the machine body, directly determines the stability and safety of equipment operation. With its outstanding advantages such as non-contact measurement and high precision, the eddy current displacement sensor has become the key technical equipment for bearing bush displacement monitoring, fortifying the "defense line" for critical equipment such as steam turbines, hydro turbines, and generators.

Wearable acoustic sensors provide an effective communication solution for individuals with speech disorders by calibrating vocal cord vibrations and converting them into synthesized speech. In this study, published in the journal *ACS Sens*, researchers from The Hong Kong Polytechnic University, led by Zhongqing SU, and Professor Limin Zhou from the Southern University of Science and Technology, developed a novel piezoresistive acoustic sensor for speech recognition.

Linearity is the core measurement capability of flexible sensing technology. Insufficient linearity not only increases the complexity of system calibration and data decoupling but also directly impacts the physical comparability of signals and measurement traceability.