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The University of Cambridge has developed a new microscope
Scientists from the University of Cambridge have developed a new microscope using the imaging technique of interference scattering microscopy. The microscope can not only observe how the battery is charged and discharged over a period of hours, it can also quickly capture the processes happening inside the battery. Lithium-ion batteries are the most widely used secondary batteries, which have the advantages of high energy density, low self-discharge rate, high potential difference, and long cycle life. Lithium-ion batteries have been applied in many fields, such as mobile phones, electric vehicles, satellites, spacecraft, underwater robots, etc. However, lithium electronic batteries are not without their shortcomings, and there is still room for improvement in terms of power density, charging speed, and service life. To improve its performance, you must first understand the inner workings of lithium batteries with the help of equipment. However, this is currently only possible with expensive, complex equipment, such as electron microscopes, or extremely powerful synchrotron X-ray machines (hundreds of thousands of times more powerful than typical X-ray machines). That is to say, it is difficult to study the internal processes of lithium batteries that actually occur under real conditions. In response to this problem, scientists from the University of Cambridge have developed a new type of microscope using the imaging technology of interference scattering microscopy. The microscope can not only observe how the battery is charged and discharged over a period of hours, it can also quickly capture the processes happening inside the battery. The tool enables simultaneous measurement and imaging of tiny objects by analyzing the interaction of light beams with scattered light. Based on this, the research team was able to image individual particles inside the lithium cobalt oxide electrode in real time and revealed some interesting behaviors. For example, during the charging and discharging process, the grain boundary of the phase transition of lithium ions in and out (this has a lot to do with the charging rate of the device). In addition, the researchers found that lithium-ion batteries have different speed limits, depending on whether it is being charged or discharged. For example, during charging, the rate depends on the speed at which lithium ions pass through the active material particles; during discharge, it depends on the speed at which the ions enter at the edges. By observing these mechanisms and manipulating the associated processes, the performance of the battery has been significantly improved. Overall, this novel and low-cost microscopy technique uncovers the microscopic work of lithium ions. In the future, it is hoped that the research results will help the research and development of intelligent electric vehicles and power batteries. A related paper, 'Operational Optical Tracing of Single-Gate Ion Dynamics in Batteries,' has been published in the journal Nature.
Cut resistance is one of the most critical performance indicators in personal protective equipment (PPE) testing, directly affecting worker safety in high-risk industries such as metal processing, machinery manufacturing, and emergency rescue. The TDM Cut Test Machine GT-KC28 plays a vital role in accurately evaluating the cut resistance of PPE products, including gloves, protective clothing, footwear materials, composite materials, rubber, and industrial textiles.
By adopting high-precision force control systems, intelligent data processing, and stable transmission technology, the GT-KC28 TDM Cut Tester can accurately measure the critical cutting force of materials and ensure excellent repeatability and comparability of test results. Its user-friendly touch-screen operation, comprehensive data storage, USB data export, and built-in thermal printer greatly improve laboratory efficiency and data traceability.
The TDM Cut Test Machine GT-KC28 fully complies with major international and national standards such as ISO 13997, EN 388, ASTM F2992/F2992M, ANSI/ISEA 105, and GB 24541-2022, making it a reliable solution for PPE manufacturers, third-party testing laboratories, and research institutions. Through precise and standardized cut resistance testing, the GT-KC28 helps reduce industrial cutting injuries, supports PPE certification across global markets, and ensures that protective equipment delivers reliable safety performance in real-world applications.
Ball Burst Method (ASTM D3787): Steel ball penetration for textiles/films using testers like GT-C02-2.
Hydraulic Method (ISO 13938.1): Fluid pressure on rubber diaphragm for industrial fabrics via GT-C12A.
Pneumatic Method (ISO 13938.2): Compressed air for breathable materials tested with GT-C12B.
Results are influenced by raw materials, yarn properties,
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