field emitter

简明释义

场致发射阴极

英英释义

例句

1.Researchers are developing a new type of field emitter for better electron emission.

研究人员正在开发一种新型的场发射器以改善电子发射。

2.A field emitter can be utilized in advanced display technologies.

在先进的显示技术中，可以利用场发射器。

3.In nanotechnology, a field emitter can be used to manipulate materials at the atomic level.

在纳米技术中，场发射器可以用于在原子层面操控材料。

4.The field emitter is crucial for enhancing the performance of vacuum tubes.

该场发射器对于提高真空管的性能至关重要。

5.The efficiency of the device improved significantly after integrating a field emitter.

在集成了一个场发射器后，设备的效率显著提高。

作文

The concept of a field emitter plays a crucial role in the field of nanotechnology and electronics. A field emitter refers to a device that emits electrons through a process known as field emission. This phenomenon occurs when a strong electric field is applied to a sharp tip or point, causing electrons to be pulled away from the surface of the emitter. The efficiency of this process is largely dependent on the geometry of the emitter and the intensity of the electric field applied.In recent years, researchers have been exploring various materials and designs for field emitters to improve their performance. Carbon nanotubes, for instance, have emerged as a promising material due to their high aspect ratio and excellent electrical properties. These properties allow carbon nanotube-based field emitters to operate at lower voltages while maintaining a high current density, which is essential for many applications.One of the most significant applications of field emitters is in the development of flat panel displays, such as those used in televisions and computer monitors. Traditional cathode ray tubes (CRTs) have largely been replaced by flat panel technologies, which rely on field emitters to produce images. By using arrays of field emitters, manufacturers can create displays that are thinner, lighter, and more energy-efficient than their CRT counterparts.Additionally, field emitters are also being investigated for use in electron microscopy and lithography. In these applications, the ability to produce a finely focused beam of electrons is paramount. Field emitters can provide the necessary precision and control, allowing for high-resolution imaging and patterning at the nanoscale.The research surrounding field emitters is not without its challenges. One of the primary issues is the stability and longevity of the emitters under operational conditions. Researchers are working on developing coatings and materials that can withstand the harsh environments often encountered in practical applications. Furthermore, understanding the underlying physics of field emitters is essential for optimizing their design and improving their performance.In conclusion, the study and application of field emitters represent a fascinating intersection of physics, materials science, and engineering. As technology continues to advance, the potential uses for field emitters will likely expand, leading to innovations in various fields. The ongoing research aims not only to enhance the performance of existing field emitters but also to explore new materials and configurations that could revolutionize how we harness electron emission for practical applications.

“场发射器”的概念在纳米技术和电子学领域中发挥着至关重要的作用。“场发射器”是指通过场发射过程发射电子的装置。当施加强电场到尖锐的尖端或点时，电子会从发射体表面被拉走，这一现象称为场发射。这个过程的效率在很大程度上依赖于发射器的几何形状和施加的电场强度。近年来，研究人员一直在探索各种材料和设计，以改善“场发射器”的性能。例如，碳纳米管因其高长径比和优良的电气特性而成为一种有前途的材料。这些特性使得基于碳纳米管的“场发射器”能够在较低电压下操作，同时保持高电流密度，这对许多应用至关重要。“场发射器”的一个重要应用是在平板显示器的开发中，例如用于电视和计算机显示器的显示器。传统的阴极射线管（CRT）已被平板技术所取代，后者依赖于“场发射器”来产生图像。通过使用“场发射器”的阵列，制造商能够创建比CRT更薄、更轻且更节能的显示器。此外，“场发射器”还在电子显微镜和光刻中被研究。在这些应用中，产生精细聚焦的电子束的能力至关重要。“场发射器”可以提供必要的精度和控制，使得在纳米尺度上实现高分辨率成像和图案化成为可能。关于“场发射器”的研究并非没有挑战。主要问题之一是发射器在操作条件下的稳定性和寿命。研究人员正在开发涂层和材料，以承受实际应用中经常遇到的恶劣环境。此外，理解“场发射器”的基本物理原理对于优化其设计和提高性能至关重要。总之，研究和应用“场发射器”代表了物理学、材料科学和工程学的迷人交集。随着技术的不断进步，“场发射器”的潜在用途可能会扩大，导致各个领域的创新。正在进行的研究旨在不仅增强现有“场发射器”的性能，还探索可能彻底改变我们如何利用电子发射进行实际应用的新材料和配置。