In-situ Characterization Methodology: The Chongguang Laboratory Unveils a Core Technological Framework for Probing Material Dynamics
To gain a deeper understanding of the dynamic behavior and performance evolution mechanisms of materials under external field conditions, the Chongguang Laboratory has systematically established a technology platform centered on multi-field‑coupled in situ characterization, striving to advance materials science from static analysis to dynamic observation and from phenomenological description to mechanistic insight.
I. Scientific Connotation: From “Static Inference” to “Dynamic Association” The theoretical core of in situ characterization techniques lies in establishing External Excitation—Microstructural Evolution—Macroscopic Property Output The dynamic quantitative relationships among the three. It overcomes the inherent limitations of conventional ex situ characterization in capturing non-equilibrium states, transient intermediates, and reversible transformations, thereby providing continuous, critical experimental validation data for theoretical models and computational simulations.
II. Technical Framework: Multi-Field Coupling and Multi-Modal Sensing Our laboratory has established in-situ characterization capabilities spanning multiple physical fields, including thermal, mechanical, electrical, and chemical phenomena, and is committed to advancing multi-modal, synchronous signal acquisition technologies.
Thermal Field Platform : Integrates high-temperature X-ray diffraction and micro-Raman spectroscopy to precisely investigate material phase transition kinetics, lattice thermal expansion, and high-temperature sintering behavior.
Force Field Platform : By combining an in-situ mechanical testing platform with a scanning electron microscope, we directly elucidate the mechanisms of crack propagation, twinning evolution, and interfacial failure during deformation.
Electrochemical platform : During controlled charge–discharge cycling, techniques such as X-ray absorption spectroscopy are employed to track in real time the valence-state changes of electrode materials, the evolution of their phase composition, and interfacial side reactions.
III. Core Challenges and Technological Responses In the face of challenges such as balancing temporal and spatial resolution, optimizing signal-to-noise ratio, and integrating multimodal correlations, we have continuously enhanced the data quality and scientific value of in situ experiments by deploying high-brilliance synchrotron radiation sources, designing low‑interference environmental chambers, and developing data‑synchronized triggering systems.
IV. Key Enabling Equipment: High-Performance Precision Thermal Stage Temperature is a fundamental parameter for controlling the state of materials. Our laboratory employs… In-situ high- and low-temperature testing of heating and cooling It features a broad temperature range from −190°C to 600°C, exceptional temperature‑control stability, and extremely low thermal drift. Its modular design enables rapid deployment and seamless integration across multiple platforms, including XRD, Raman, and SEM, providing a reliable and efficient means of simulating extreme environmental conditions for studying thermally driven material processes.
In situ characterization serves as a critical bridge between fundamental materials research and engineering applications. The Chongguang Laboratory will continue to refine this technological framework, with the aim of providing robust methodological support for the precise design and performance optimization of new materials.
Congtical Technology