high vacuum

简明释义

高真空

英英释义

例句

1.The laboratory requires a high vacuum 高真空 environment for conducting sensitive experiments.

实验室需要一个高真空 高真空环境来进行敏感实验。

2.The high vacuum 高真空 pump needs to be checked regularly to maintain optimal performance.

需要定期检查高真空 高真空泵以保持最佳性能。

3.For the deposition of thin films, a high vacuum 高真空 system is used to ensure quality.

为了沉积薄膜，使用高真空 高真空系统以确保质量。

4.In the manufacturing process of semiconductors, maintaining a high vacuum 高真空 is crucial to avoid contamination.

在半导体制造过程中，保持高真空 高真空对避免污染至关重要。

5.The high vacuum 高真空 chamber is essential for electron microscopy to enhance image clarity.

为了提高图像清晰度，高真空 高真空腔体对于电子显微镜至关重要。

作文

High vacuum technology plays a crucial role in various scientific and industrial applications. The term high vacuum refers to a state of very low pressure, typically below 10^-5 torr, where the number of gas molecules is significantly reduced. This environment is essential for many processes, such as semiconductor manufacturing, electron microscopy, and surface science research. In these fields, the presence of even a small amount of gas can lead to contamination and affect the quality of the final product. Therefore, achieving a high vacuum is paramount.One of the primary methods used to achieve high vacuum is through the use of vacuum pumps. These devices work by removing air and other gases from a sealed chamber, creating a vacuum. There are different types of vacuum pumps, including rotary vane pumps, diffusion pumps, and turbomolecular pumps, each suited for specific applications and vacuum levels. For instance, rotary vane pumps are often used to create a rough vacuum, while turbomolecular pumps are employed to reach high vacuum levels due to their ability to efficiently remove residual gas molecules.In addition to the pumps, the design of the vacuum chamber itself is critical in maintaining high vacuum. Materials that outgas, such as certain plastics or metals, can release gas into the vacuum environment, leading to pressure fluctuations. Therefore, chambers are often constructed from materials like stainless steel or glass, which have low outgassing rates. Furthermore, proper sealing techniques, such as using O-rings and flanges, help prevent leaks that could compromise the vacuum level.The applications of high vacuum technology are vast. In the field of semiconductor manufacturing, for example, high vacuum environments are necessary for processes like chemical vapor deposition (CVD) and physical vapor deposition (PVD). These methods involve depositing thin films of materials onto substrates, and any contamination can significantly impact the electrical properties of the semiconductors. Similarly, electron microscopes require high vacuum to ensure that electrons can travel unimpeded from the source to the sample, allowing for high-resolution imaging.Moreover, high vacuum is also vital in scientific research, particularly in surface science and material characterization. Researchers often study the properties of materials at the atomic level, and having a clean, controlled environment is essential for obtaining accurate results. Techniques such as Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) rely on high vacuum to analyze surface composition and chemical states without interference from atmospheric gases.In conclusion, understanding and mastering high vacuum technology is essential for advancements in various fields. The ability to create and maintain a high vacuum environment enables scientists and engineers to conduct experiments and manufacturing processes with precision and accuracy. As technology continues to evolve, the importance of high vacuum will only grow, paving the way for innovations that could transform industries and improve our daily lives.

高真空技术在各种科学和工业应用中发挥着至关重要的作用。术语高真空指的是一种非常低的压力状态，通常低于10^-5托，在这种状态下，气体分子的数量显著减少。这种环境对于许多过程至关重要，例如半导体制造、电子显微镜和表面科学研究。在这些领域，即使是少量的气体也会导致污染，并影响最终产品的质量。因此，实现高真空是非常重要的。实现高真空的主要方法之一是使用真空泵。这些设备通过从密封腔室中去除空气和其他气体来工作，从而创建真空。有不同类型的真空泵，包括旋片泵、扩散泵和涡轮分子泵，每种泵适用于特定的应用和真空水平。例如，旋片泵通常用于创建粗真空，而涡轮分子泵由于其高效去除残余气体分子的能力，被用于达到高真空水平。除了泵，真空腔室的设计在维持高真空中也是至关重要的。那些会释放气体的材料，如某些塑料或金属，可能会向真空环境释放气体，导致压力波动。因此，腔室通常由不锈钢或玻璃等低释气率的材料构成。此外，采用合适的密封技术，如使用O形圈和法兰，有助于防止泄漏，从而影响真空水平。高真空技术的应用广泛。例如，在半导体制造领域，高真空环境对于化学气相沉积（CVD）和物理气相沉积（PVD）等过程是必需的。这些方法涉及将薄膜材料沉积到基板上，任何污染都可能显著影响半导体的电气特性。同样，电子显微镜需要高真空以确保电子能够不受阻碍地从源头传输到样品，从而实现高分辨率成像。此外，高真空在科学研究中也至关重要，特别是在表面科学和材料表征中。研究人员经常在原子级别上研究材料的性质，而拥有一个干净、可控的环境对于获得准确的结果至关重要。诸如奥杰电子能谱（AES）和X射线光电子能谱（XPS）等技术依赖于高真空来分析表面组成和化学状态，而不受大气气体的干扰。总之，理解和掌握高真空技术对于各个领域的进步至关重要。创造和维持高真空环境的能力使科学家和工程师能够以精确和准确的方式进行实验和制造过程。随着技术的不断发展，高真空的重要性只会增加，为可能改变行业的创新铺平道路，改善我们的日常生活。