cathode luminescence

简明释义

阴极发光

英英释义

例句

1.Applications of cathode luminescence 阴极发光 include lighting and display technologies.

应用阴极发光包括照明和显示技术。

2.Researchers observed cathode luminescence 阴极发光 in various crystal structures during their experiments.

研究人员在实验中观察到不同晶体结构中的阴极发光。

3.The study of cathode luminescence 阴极发光 is essential for understanding the properties of semiconductors.

对阴极发光的研究对于理解半导体的性质至关重要。

4.The phenomenon of cathode luminescence 阴极发光 helps in identifying defects in materials.

现象阴极发光有助于识别材料中的缺陷。

5.In electron microscopy, cathode luminescence 阴极发光 can be used to analyze mineral compositions.

在电子显微镜中，阴极发光可用于分析矿物成分。

作文

In the field of materials science and physics, the phenomenon known as cathode luminescence plays a crucial role in understanding the properties of various materials. cathode luminescence (阴极发光) refers to the emission of light from a material when it is struck by electrons. This effect is commonly observed in phosphors, which are substances that exhibit the phenomenon of luminescence when energized by an external source, such as an electron beam. The study of cathode luminescence has significant implications in the development of display technologies, lighting systems, and even in the analysis of geological samples.One of the most notable applications of cathode luminescence is in cathode ray tubes (CRTs), which were widely used in television and computer monitors before the advent of modern flat-screen technologies. In CRTs, an electron beam is directed at a phosphorescent screen, causing it to emit light through the process of cathode luminescence. This principle allows for the creation of images on the screen, making it possible to display videos and graphics. Although CRTs have largely been replaced by LCD and LED technologies, the underlying principles of cathode luminescence remain relevant in the design of these newer displays.Additionally, cathode luminescence is utilized in the field of geology to examine mineral samples. When minerals are subjected to an electron beam in a scanning electron microscope (SEM), they can emit light due to cathode luminescence. This emitted light can provide valuable information about the mineral's composition, structure, and the conditions under which it formed. Geologists often use this technique to gain insights into the history of the Earth and its geological processes.The mechanisms behind cathode luminescence involve the excitation of electrons within the material. When the electrons collide with the atoms in the material, they can transfer energy, promoting electrons to higher energy states. When these excited electrons return to their ground state, they release energy in the form of light, resulting in the observable luminescence. The color and intensity of the emitted light can vary depending on the material's composition and the energy of the incoming electrons.Research into cathode luminescence continues to advance our understanding of material properties and behaviors. Scientists are exploring new phosphor materials that can enhance the efficiency and brightness of displays, as well as investigating how cathode luminescence can be harnessed in novel applications, such as in solid-state lighting or optoelectronic devices.In summary, cathode luminescence (阴极发光) is a fascinating phenomenon that not only contributes to our understanding of material science but also has practical applications in technology and geology. As we continue to explore this area, we can expect further innovations that leverage the unique properties of cathode luminescence to improve existing technologies and develop new ones. The ongoing research in this field highlights the importance of interdisciplinary approaches in advancing our knowledge and capabilities in both scientific and practical realms.

在材料科学和物理学领域，称为阴极发光的现象在理解各种材料的特性方面发挥着至关重要的作用。阴极发光是指当材料被电子撞击时发出光的现象。这种效应通常在磷光体中观察到，磷光体是指在外部源（如电子束）激励下表现出发光现象的物质。对阴极发光的研究在显示技术、照明系统甚至地质样本分析的发展中具有重要意义。阴极发光最显著的应用之一是在阴极射线管（CRT）中，CRT曾广泛用于电视和计算机显示器，直到现代平面屏幕技术的出现。在CRT中，电子束被引导到磷光屏幕上，使其通过阴极发光的过程发出光。这一原理使得在屏幕上生成图像成为可能，从而可以显示视频和图形。尽管CRT已被LCD和LED技术大多取代，但阴极发光的基本原理在这些新型显示器的设计中仍然相关。此外，阴极发光还用于地质学领域以检查矿物样本。当矿物在扫描电子显微镜（SEM）中受到电子束的作用时，由于阴极发光，它们可以发出光。这种发出的光可以提供关于矿物成分、结构以及形成条件的宝贵信息。地质学家常常使用这种技术来深入了解地球的历史及其地质过程。阴极发光背后的机制涉及材料内电子的激发。当电子与材料中的原子碰撞时，它们可以转移能量，促进电子到达更高的能量状态。当这些激发的电子返回到基态时，它们以光的形式释放能量，从而导致可观察到的发光。发出光的颜色和强度可以根据材料的成分和入射电子的能量而变化。对阴极发光的研究不断推进我们对材料特性和行为的理解。科学家们正在探索新的磷光材料，以提高显示器的效率和亮度，并调查如何在固态照明或光电设备等新应用中利用阴极发光。总之，阴极发光是一个迷人的现象，不仅有助于我们理解材料科学，还在技术和地质学中具有实际应用。随着我们继续探索这一领域，我们可以期待进一步的创新，利用阴极发光的独特特性来改善现有技术并开发新技术。这一领域的持续研究强调了跨学科方法在推进我们知识和能力方面的重要性，无论是在科学还是实践领域。