hydrodynamic diameter

简明释义

铃动力直径

英英释义

例句

1.The hydrodynamic diameter of the droplets was crucial for optimizing the spray application in agriculture.

滴液的流体动力学直径对优化农业喷雾应用至关重要。

2.The hydrodynamic diameter of the nanoparticles was measured to understand their behavior in the bloodstream.

为了了解纳米颗粒在血液中的行为，测量了它们的流体动力学直径。

3.Researchers found that the hydrodynamic diameter affects the diffusion rate of molecules in a solution.

研究人员发现，流体动力学直径影响分子在溶液中的扩散速率。

4.To design effective drug delivery systems, it is essential to consider the hydrodynamic diameter of carriers.

为了设计有效的药物递送系统，考虑载体的流体动力学直径是必不可少的。

5.In colloidal systems, the hydrodynamic diameter can influence stability and aggregation.

在胶体系统中，流体动力学直径可以影响稳定性和聚集。

作文

The field of nanotechnology has been rapidly evolving, leading to significant advancements in various applications, including drug delivery systems, environmental remediation, and materials science. One of the critical parameters in understanding the behavior of nanoparticles in different mediums is the concept of hydrodynamic diameter. This term refers to the effective diameter of a particle as it moves through a fluid, which is influenced by both the particle's actual size and the surrounding fluid's properties. Understanding the hydrodynamic diameter is essential for predicting how nanoparticles will interact with biological systems and other materials.In essence, the hydrodynamic diameter provides insight into how particles behave in suspension. When nanoparticles are dispersed in a liquid, they do not exist in isolation; instead, they are surrounded by a layer of solvent molecules. This interaction can affect their movement and stability. The hydrodynamic diameter takes into account this additional layer, making it larger than the actual physical size of the nanoparticle. For instance, a nanoparticle with a core diameter of 10 nanometers may have a hydrodynamic diameter of 20 nanometers due to the solvent shell that surrounds it.The significance of the hydrodynamic diameter extends beyond mere academic interest. In pharmaceutical applications, the size of nanoparticles can influence their biodistribution, cellular uptake, and clearance from the body. For example, smaller nanoparticles may have a higher likelihood of penetrating biological barriers, while larger ones may be more easily recognized and eliminated by the immune system. Thus, understanding and controlling the hydrodynamic diameter is crucial for designing effective drug delivery systems that can target specific tissues or cells.Moreover, the hydrodynamic diameter plays a vital role in characterizing the stability of colloidal systems. In many cases, nanoparticles are stabilized in suspension using surfactants or stabilizing agents. The effectiveness of these stabilizers can be evaluated by measuring the hydrodynamic diameter over time. If the hydrodynamic diameter increases significantly, it may indicate that the particles are agglomerating, which could lead to instability and reduced efficacy in applications such as drug delivery or environmental cleanup.In conclusion, the concept of hydrodynamic diameter is fundamental in the study of nanoparticles and their applications across various fields. It provides a more accurate representation of how particles behave in a fluid environment compared to their physical size alone. By understanding the hydrodynamic diameter, researchers can better predict the interactions of nanoparticles with biological systems, enhance the design of drug delivery vehicles, and improve the stability of colloidal formulations. As nanotechnology continues to advance, the importance of parameters like hydrodynamic diameter will only increase, paving the way for innovative solutions in medicine, environmental science, and materials engineering.

纳米技术领域正在迅速发展，导致在药物递送系统、环境修复和材料科学等多个应用中取得重大进展。理解纳米颗粒在不同介质中行为的关键参数之一是水动力直径的概念。这个术语指的是颗粒在流体中移动时的有效直径，它受颗粒的实际大小和周围流体性质的影响。理解水动力直径对于预测纳米颗粒如何与生物系统和其他材料相互作用至关重要。从本质上讲，水动力直径提供了对粒子在悬浮液中行为的洞察。当纳米颗粒分散在液体中时，它们并不是孤立存在的；相反，它们被一层溶剂分子包围。这种相互作用会影响它们的运动和稳定性。水动力直径考虑到了这一额外层，使其比纳米颗粒的实际物理大小更大。例如，一个核心直径为10纳米的纳米颗粒，其水动力直径可能由于其周围的溶剂壳而达到20纳米。水动力直径的重要性超出了单纯的学术兴趣。在制药应用中，纳米颗粒的大小可以影响其生物分布、细胞摄取和从体内清除的能力。例如，更小的纳米颗粒可能更有可能穿透生物屏障，而较大的颗粒则可能更容易被免疫系统识别和消除。因此，理解和控制水动力直径对于设计能够靶向特定组织或细胞的有效药物递送系统至关重要。此外，水动力直径在表征胶体系统的稳定性方面也发挥着重要作用。在许多情况下，纳米颗粒通过表面活性剂或稳定剂在悬浮液中得到稳定。通过测量水动力直径随时间的变化，可以评估这些稳定剂的有效性。如果水动力直径显著增加，可能表明颗粒正在聚集，这可能导致不稳定，并降低药物递送或环境清理等应用的有效性。总之，水动力直径的概念在纳米颗粒及其在各个领域应用的研究中是基础性的。与颗粒的物理大小相比，它提供了更准确的表示，说明粒子在流体环境中的行为。通过理解水动力直径，研究人员可以更好地预测纳米颗粒与生物系统的相互作用，增强药物递送载体的设计，并改善胶体配方的稳定性。随着纳米技术的不断进步，像水动力直径这样的参数的重要性只会增加，为医学、环境科学和材料工程中的创新解决方案铺平道路。