electron beam

简明释义

电子束

英英释义

例句

1.Researchers are investigating the effects of an electron beam on various materials.

研究人员正在调查电子束对各种材料的影响。

2.The electron beam can be utilized in welding applications due to its focused energy.

由于其集中的能量，电子束可以用于焊接应用。

3.An electron beam can be used to modify the properties of polymers.

可以使用电子束来改变聚合物的性质。

4.In semiconductor manufacturing, an electron beam is employed for lithography processes.

在半导体制造中，使用电子束进行光刻工艺。

5.The electron beam is used in electron microscopy to create high-resolution images of specimens.

在电子显微镜中使用电子束来创建样品的高分辨率图像。

作文

The world of modern technology is heavily influenced by various scientific principles, one of which is the concept of the electron beam (电子束). This term refers to a stream of electrons that are emitted from a cathode and directed towards a target. The significance of electron beams in various applications cannot be overstated, as they play a crucial role in fields ranging from electronics to medicine.In electronics, electron beams are used in cathode ray tubes (CRTs), which were once the standard for television screens and computer monitors. These tubes work by directing a focused electron beam onto a phosphorescent screen, creating images through the excitation of phosphor materials. Although CRTs have largely been replaced by LCD and LED technologies, the underlying principle of using electron beams to create images laid the groundwork for modern display technologies.Moreover, electron beams are essential in the field of microscopy. Scanning electron microscopes (SEMs) utilize focused electron beams to achieve high-resolution images of surfaces at the microscopic level. The ability to visualize structures at such a small scale has revolutionized materials science and biology, allowing researchers to examine cellular structures and material properties with unprecedented detail.In addition to their applications in imaging, electron beams are also pivotal in manufacturing processes. For instance, in the semiconductor industry, electron beams are employed in lithography, a technique used to transfer patterns onto silicon wafers. This process is fundamental for the production of integrated circuits, which are the backbone of all modern electronic devices. The precision offered by electron beams allows for the creation of extremely small features on chips, enabling the continuous advancement of technology.Furthermore, electron beams have significant applications in the medical field, particularly in radiation therapy for cancer treatment. High-energy electron beams can be directed at tumors to destroy cancerous cells while minimizing damage to surrounding healthy tissues. This targeted approach makes electron beam therapy a powerful tool in oncology, offering patients effective treatment options.The versatility of electron beams extends to various other fields, including materials science, where they are used for surface modification and analysis. Techniques such as electron beam melting and welding leverage the heat generated by electron beams to join materials or alter their properties at the atomic level. This capability opens up new possibilities for creating advanced materials with tailored characteristics.In conclusion, the concept of the electron beam (电子束) is a fundamental aspect of many technological advancements. Its applications in electronics, microscopy, manufacturing, and medicine highlight its importance across various domains. As technology continues to evolve, the role of electron beams will likely expand, leading to further innovations that can enhance our understanding of the world and improve our quality of life.