barrier height

简明释义

势垒高度

英英释义

例句

1.The barrier height in this semiconductor device determines its efficiency.

这个半导体设备中的势垒高度决定了它的效率。

2.A lower barrier height can lead to increased electron mobility.

较低的势垒高度可以导致电子迁移率的增加。

3.To improve performance, engineers are studying the barrier height of the junction.

为了提高性能，工程师们正在研究接合处的势垒高度。

4.Researchers are focused on measuring the barrier height accurately.

研究人员专注于准确测量势垒高度。

5.The barrier height affects the thermal stability of the material.

该材料的势垒高度影响其热稳定性。

作文

In the field of physics and engineering, the term barrier height is crucial for understanding various phenomena related to energy and potential barriers. The barrier height refers to the minimum energy required for a particle to overcome a barrier, which can be a physical or potential barrier. This concept is particularly significant in quantum mechanics, where particles such as electrons must overcome potential barriers to transition between energy states or to escape from a material. For instance, consider a semiconductor device, which operates on the principles of quantum mechanics. In such devices, the barrier height determines how easily charge carriers (electrons and holes) can move across junctions. A low barrier height implies that it is easier for these charge carriers to cross the junction, leading to higher conductivity and better performance of the device. Conversely, a high barrier height can restrict the movement of charge carriers, resulting in lower conductivity and potentially causing inefficiencies in the device's operation.The significance of barrier height extends beyond semiconductors. In chemical reactions, the barrier height also plays a vital role. It represents the energy threshold that reactants must surpass to form products. A reaction with a high barrier height will proceed slowly because fewer molecules will have enough energy to overcome the barrier, while a reaction with a low barrier height tends to occur more rapidly. This concept is essential in fields like catalysis, where catalysts work by lowering the barrier height of a reaction, thus enhancing the reaction rate.Moreover, the barrier height is not only limited to physical and chemical contexts but also applies to social sciences. For example, in psychology, the barrier height can metaphorically represent the obstacles individuals face when trying to achieve their goals. These barriers may include socio-economic factors, personal challenges, or systemic issues that hinder progress. Understanding the barrier height in this context allows us to devise strategies to lower these barriers, enabling people to reach their full potential.In summary, the concept of barrier height is multifaceted, appearing in various disciplines from physics and chemistry to social sciences. Its implications are profound, affecting everything from the efficiency of electronic devices to the speed of chemical reactions and even the personal growth of individuals. By comprehensively understanding the barrier height, we can enhance our ability to innovate in technology, improve reaction rates in chemistry, and create supportive environments that help individuals overcome personal and societal obstacles. The study of barrier height thus serves as a bridge connecting diverse fields, highlighting the interconnectedness of knowledge and the importance of interdisciplinary approaches in solving complex problems.

在物理和工程领域，术语障碍高度对于理解与能量和潜在障碍相关的各种现象至关重要。障碍高度指的是粒子克服一个障碍所需的最小能量，这可以是物理障碍或潜在障碍。这个概念在量子力学中尤为重要，因为像电子这样的粒子必须克服潜在障碍才能在能量状态之间转变或从材料中逃逸。例如，考虑一个半导体器件，它基于量子力学的原理运作。在这样的设备中，障碍高度决定了电荷载流子（电子和空穴）穿越结的难易程度。较低的障碍高度意味着这些电荷载流子更容易穿过结，从而导致更高的导电性和更好的设备性能。相反，较高的障碍高度可能会限制电荷载流子的运动，导致导电性降低，并可能造成设备操作中的低效。障碍高度的重要性不仅限于半导体。在化学反应中，障碍高度同样发挥着重要作用。它代表了反应物必须超越的能量门槛，以形成产物。具有高障碍高度的反应将进行缓慢，因为只有少数分子拥有足够的能量来克服障碍，而具有低障碍高度的反应则往往更快速。这一概念在催化等领域至关重要，催化剂通过降低反应的障碍高度来加速反应速率。此外，障碍高度不仅限于物理和化学背景，还适用于社会科学。例如，在心理学中，障碍高度可以比喻地表示个人在实现目标时面临的障碍。这些障碍可能包括社会经济因素、个人挑战或阻碍进步的系统性问题。在这种背景下理解障碍高度使我们能够制定策略，以降低这些障碍，帮助人们充分发挥其潜力。总之，障碍高度的概念是多方面的，出现在从物理学和化学到社会科学的多个学科中。其影响深远，影响从电子设备的效率到化学反应的速度，甚至个人的成长。通过全面理解障碍高度，我们可以增强在技术创新、改善化学反应速率以及创造支持性环境以帮助个人克服个人和社会障碍的能力。因此，障碍高度的研究作为连接不同领域的桥梁，突显了知识的相互关联性以及跨学科方法在解决复杂问题中的重要性。