thermal excitation

简明释义

热激发

英英释义

例句

1.The process of thermal excitation 热激发 in semiconductors is critical for their conductivity.

半导体中的热激发 thermal excitation过程对其导电性至关重要。

2.In lasers, thermal excitation 热激发 can lead to population inversion necessary for laser action.

在激光器中，热激发 thermal excitation可以导致激光作用所需的粒子反转。

3.The phenomenon of thermal excitation 热激发 is often observed in molecular vibrations at high temperatures.

在高温下，分子振动中常常观察到热激发 thermal excitation现象。

4.The thermal excitation 热激发 of electrons contributes to the thermal conductivity of metals.

电子的热激发 thermal excitation有助于金属的热导率。

5.During the experiment, we measured the effects of thermal excitation 热激发 on the material's properties.

在实验过程中，我们测量了热激发 thermal excitation对材料性质的影响。

作文

In the realm of physics and materials science, the concept of thermal excitation plays a pivotal role in understanding how particles behave under varying temperature conditions. Thermal excitation refers to the process by which particles gain energy from heat, leading to increased motion or changes in their state. This phenomenon is crucial for explaining the behavior of solids, liquids, and gases as they undergo phase transitions or respond to external stimuli. When a material is heated, the atoms or molecules within it begin to vibrate more vigorously. This increase in vibrational energy is what we refer to as thermal excitation. As the temperature rises, a greater number of particles achieve higher energy states, which can lead to various physical changes. For instance, in solids, thermal excitation can cause the lattice structure of the material to distort, potentially resulting in melting if the temperature exceeds a certain threshold.The implications of thermal excitation extend beyond simple phase changes. In the field of electronics, understanding how materials respond to thermal excitation is essential for the development of semiconductors and insulators. When electrons in a semiconductor are thermally excited, they can jump from the valence band to the conduction band, enabling electrical conductivity. This principle is fundamental to the operation of devices such as transistors and diodes, which are the building blocks of modern electronic circuits.Moreover, thermal excitation also plays a significant role in chemical reactions. Many reactions require an input of energy to overcome activation barriers, and heat can provide this necessary energy. In this context, thermal excitation can facilitate the breaking of chemical bonds, allowing reactants to transform into products. This is particularly evident in processes like combustion, where the heat generated leads to the rapid excitation of molecules, resulting in a vigorous reaction.In biological systems, thermal excitation is equally important. Enzymatic reactions, which are vital for sustaining life, often depend on the thermal energy present in the environment. The rate of these reactions can increase with temperature due to the enhanced kinetic energy of the molecules involved. However, there is a delicate balance; too much thermal excitation can lead to denaturation of proteins, rendering them ineffective. In conclusion, thermal excitation is a fundamental concept that permeates various fields of science and technology. From the basic understanding of particle behavior in different states of matter to its applications in electronics and biochemistry, the effects of thermal energy cannot be overstated. As research continues to advance, a deeper understanding of thermal excitation will undoubtedly lead to new innovations and discoveries that harness the power of heat in practical and beneficial ways.

在物理学和材料科学领域，热激发的概念在理解粒子在不同温度条件下的行为中发挥着关键作用。热激发是指粒子从热量中获得能量，从而导致运动增加或状态变化的过程。这一现象对于解释固体、液体和气体在经历相变或响应外部刺激时的行为至关重要。当材料被加热时，其中的原子或分子开始更加剧烈地振动。这种振动能量的增加就是我们所称的热激发。随着温度的升高，更多的粒子达到更高的能量状态，这可能导致各种物理变化。例如，在固体中，热激发可以导致材料的晶格结构扭曲，如果温度超过某个阈值，可能会导致熔化。热激发的影响不仅限于简单的相变。在电子学领域，理解材料如何响应热激发对于开发半导体和绝缘体至关重要。当半导体中的电子被热激发时，它们可以从价带跃迁到导带，从而实现电导性。这个原理是现代电子电路中晶体管和二极管等器件运作的基础。此外，热激发在化学反应中也扮演着重要角色。许多反应需要输入能量以克服活化能障，而热量可以提供这种必要的能量。在这种情况下，热激发可以促进化学键的断裂，使反应物转化为产物。这在燃烧等过程中尤为明显，其中产生的热量导致分子的快速激发，从而引发剧烈反应。在生物系统中，热激发同样重要。酶促反应对维持生命至关重要，通常依赖于环境中的热能。这些反应的速率可以随着温度的升高而增加，因为参与的分子的动能增强。然而，这是一种微妙的平衡；过多的热激发可能导致蛋白质变性，使其失去效能。总之，热激发是一个基本概念，渗透到科学和技术的各个领域。从对不同物质状态下粒子行为的基本理解，到其在电子学和生物化学中的应用，热能的影响不容小觑。随着研究的不断推进，对热激发的更深入理解无疑将导致新创新和发现，利用热的力量以实用和有益的方式。