二氧化钒具有从金属相到绝缘体相发生可逆相变的特性，在68℃，分子结构从单斜结构转换成金红石结构，同时伴随着光学、电学和热学性质的快速突变，使得二氧化钒被广泛应用于热光调控、光学防护、红外伪装、离子电池和化学传感等领域。本文总结了二氧化钒薄膜新颖的制备技术、研究现状以及各种技术的优缺点，分析了应力、掺杂、缺陷等因素对二氧化钒相变特性的显著影响，归纳了二氧化钒的相变机理和支持相关相变机理的证据，列举了二氧化钒在不同热门领域中的应用，并对二氧化钒的发展方向和应用前景进行了总结和展望。

Impact and torsion pendulums are applied in impulse coupling experiments of high-energy laser irradiation of space debris. It is difficult to achieve a multi-pulse experiment and thus hard to analyze the multi-pulse impulse coupling effect. Here, we designed a new recoil impulse experimental measurement system of non-contact, multi-degrees of freedom, and multi-pulse irradiation. The system used a low-pressure and low-temperature vacuum chamber to simulate the space environment, the pinning effect of magnetic levitation to achieve aluminum target suspension, and high-speed cameras to record the displacement over time to calculate the impulse of the target. Then the impulse coupling experiment of multi-pulse laser irradiation on the aluminum target was performed. The result shows that the multi-pulse impulse coupling effect is not the linear accumulation of coupling results by every single-pulse and multi-pulse coefficient that decreases with the increase of the number of pulses, and eventually stabilizes as the decrease gets smaller.