crystallization nucleus

简明释义

晶种

英英释义

例句

1.During the cooling process of molten glass, tiny particles can act as a crystallization nucleus (结晶核) to initiate solidification.

在熔融玻璃的冷却过程中，微小颗粒可以作为一个crystallization nucleus（结晶核）来启动固化。

2.The presence of impurities can act as a crystallization nucleus (结晶核), enhancing the rate of crystal formation in solutions.

杂质的存在可以作为一个crystallization nucleus（结晶核），增强溶液中晶体形成的速度。

3.Researchers discovered that certain proteins can serve as a crystallization nucleus (结晶核) for the development of larger crystals.

研究人员发现某些蛋白质可以作为大型晶体发展的crystallization nucleus（结晶核）。

4.In metallurgy, the addition of specific elements can create a crystallization nucleus (结晶核) that improves the mechanical properties of alloys.

在冶金学中，添加特定元素可以形成一个crystallization nucleus（结晶核），改善合金的机械性能。

5.In the process of ice formation, the initial water molecules gather around a small particle, forming a crystallization nucleus (结晶核) that promotes further growth.

在冰的形成过程中，初始的水分子聚集在一个小颗粒周围，形成一个crystallization nucleus（结晶核），促进进一步生长。

作文

In the world of materials science, the concept of a crystallization nucleus plays a crucial role in understanding how solids form from liquids. A crystallization nucleus can be defined as a small cluster of atoms or molecules that serves as a starting point for the formation of a crystal. This process is vital in various fields, including metallurgy, geology, and even biology, as it influences the properties of the resulting solid material.When a liquid cools down, its molecules begin to lose energy and slow down. As they do so, they may start to come together to form a solid structure. However, this process does not happen randomly; it requires a specific arrangement of molecules to initiate crystallization. This is where the crystallization nucleus comes into play. It acts as a template that guides the organization of surrounding molecules into a stable crystalline structure.The size and stability of the crystallization nucleus are critical factors that determine whether crystallization will occur. If the nucleus is too small, it may not have enough energy to grow into a larger crystal. Conversely, if it is too large, it may not be able to overcome the energy barriers associated with the transition from liquid to solid. Thus, finding the right balance is essential for successful crystallization.One practical application of understanding crystallization nuclei is in the field of pharmaceuticals. When creating drugs, scientists must ensure that the active ingredients crystallize correctly to achieve the desired potency and solubility. By manipulating conditions such as temperature, pressure, and concentration, researchers can control the formation of crystallization nuclei, leading to more effective medications.Moreover, the study of crystallization nuclei extends beyond synthetic processes. In nature, minerals form through similar mechanisms. For instance, when magma cools slowly beneath the Earth's surface, crystallization nuclei can form, leading to the development of large crystals over time. Understanding these natural processes helps geologists interpret the history of the Earth and the formation of its many mineral deposits.In summary, the crystallization nucleus is a fundamental concept in the study of crystallization. It serves as the initial point for the growth of crystals, influencing the properties of the final solid material. Whether in industrial applications or natural processes, the role of crystallization nuclei is significant, making it an essential topic for anyone interested in materials science and related fields. By mastering the concept of crystallization nuclei, we can better understand the intricate processes that govern the formation of solid materials around us.

在材料科学的世界中，‘结晶核’这一概念在理解固体如何从液体形成方面起着至关重要的作用。‘结晶核’可以定义为一小簇原子或分子，它作为晶体形成的起始点。这个过程在冶金、地质学甚至生物学等多个领域中都至关重要，因为它影响着最终固体材料的性质。当液体冷却时，其分子开始失去能量并减慢速度。随着它们的运动，可能会开始聚集在一起形成固体结构。然而，这个过程并不是随机发生的；它需要特定的分子排列来启动结晶。这就是‘结晶核’发挥作用的地方。它充当模板，引导周围分子的组织形成稳定的晶体结构。‘结晶核’的大小和稳定性是决定结晶是否发生的关键因素。如果核太小，可能没有足够的能量成长为更大的晶体。相反，如果它太大，可能无法克服从液体到固体转变所需的能量障碍。因此，找到合适的平衡对于成功结晶至关重要。理解‘结晶核’的一个实际应用是在制药领域。当创造药物时，科学家必须确保活性成分正确结晶，以达到所需的效力和溶解度。通过操控温度、压力和浓度等条件，研究人员可以控制‘结晶核’的形成，从而生产出更有效的药物。此外，‘结晶核’的研究超出了合成过程。在自然界中，矿物也通过类似的机制形成。例如，当岩浆在地球表面下缓慢冷却时，可以形成‘结晶核’，随着时间的推移，导致大型晶体的发展。理解这些自然过程有助于地质学家解读地球的历史及其众多矿物沉积的形成。总之，‘结晶核’是结晶研究中的一个基本概念。它作为晶体生长的初始点，影响最终固体材料的性质。无论是在工业应用还是自然过程中，‘结晶核’的作用都是显著的，这使其成为任何对材料科学和相关领域感兴趣的人必须掌握的重要主题。通过掌握‘结晶核’的概念，我们可以更好地理解支配我们周围固体材料形成的复杂过程。