dichroism

简明释义

英[ˈdaɪkrəʊɪzəm]美[ˈdaɪkroʊˌɪzəm]

n. [光] 二色性，[光][晶体] 二向色性

英英释义

单词用法

同义词

反义词

例句

1.The rotational diffusion of bacteriorhodopsin at different temperature and different amount of protein in membrane were measured by the technique of flash-induced transient dichroism.

本实验用闪光诱导的瞬间二向色性方法测量了不同温度以及不同蛋白质含量下菌紫质分子在脂质囊泡膜中的旋转扩散运动。

2.Spectroscopic methods including UV-dichroism and FT-IR were used to study the p…

用紫外二色性和付里埃红外等光谱方法，对其光致取向行为进行了研究。

3.Interraction and correlation effect of silver nanoparticles and serum albumin were reached by circular dichroism spectrum.

用圆二色光谱，紫外-可见光谱研究银纳米粒子与血清白蛋白的相互作用及其相关效应。

4.The self-assembly behavior of this compound in solution and in gel was studied using circular dichroism.

利用圆二色谱表征了该化合物在溶液和胶体中的自组装行为。

5.Methods: To determine the secondary structure of PTH (1-34) in normal and hyperparathyroidism condition using far-UV circular dichroism spectroscopy.

方法：采用远紫外圆二色谱分析法，对正常人及甲旁亢患者血清的PTH(1 -34)进行蛋白质二级结构的测定。

6.Linear dichroism (LD) spectroscopy is an important technique in the study of the orientation and organization of pigments in the photosynthetic membrane complexes in vivo and in vitro .

线二色光谱（LD）是研究色素分子在光合膜上空间取向和排布的重要手段。

7.The infrared spectra, electronic absorption spectra and circular dichroism spectra properties were discussed.

详细讨论了配体及配合物的红外光谱、电子吸收光谱和圆二色光谱性质。

8.The results indicated that the polymers exhibited stronger circular dichroism (CD)signals with positive and negative Cotton effect in their CD spectra.

结果说明聚合物在园二色谱中正负科顿效应都有强的园二色信号。

9.The stability of human HPO was investigated by circular dichroism and fluorescence spectroscopy.

采用内源荧光光谱和圆二色光谱法研究了人HPO的稳定性。

10.The gemstone displayed remarkable dichroism, showing different colors when viewed from various angles.

这颗宝石表现出显著的二色性，从不同角度观察时显示出不同的颜色。

11.In polarizing microscopy, dichroism can help identify minerals based on their optical properties.

在偏光显微镜中，二色性可以帮助根据矿物的光学特性来识别矿物。

12.The study of dichroism is essential in the field of materials science for analyzing crystal structures.

研究二色性在材料科学领域对于分析晶体结构至关重要。

13.Some polymers exhibit dichroism when subjected to stress, which can be useful in stress analysis.

某些聚合物在施加应力时会表现出二色性，这在应力分析中非常有用。

14.The dichroism observed in the dye indicates its ability to absorb light differently at various wavelengths.

在染料中观察到的二色性表明它在不同波长下吸收光的能力不同。

作文

Dichroism is a fascinating optical phenomenon that occurs in certain materials, where they exhibit different colors when viewed from different angles or under varying lighting conditions. This unique property is most commonly observed in crystals and some types of minerals, as well as in specific synthetic materials. The study of dichroism has significant implications in various fields, including mineralogy, materials science, and even art conservation. Understanding dichroism can help scientists and artists alike to appreciate the complexity and beauty of the materials they work with. To grasp the concept of dichroism, it is essential to consider how light interacts with different substances. When light hits a material, it can be absorbed, transmitted, or reflected. In the case of dichroism, the material selectively absorbs certain wavelengths of light, resulting in a distinct color being visible depending on the angle of observation. For instance, a piece of tourmaline may appear green when viewed from one direction but shift to a reddish hue when viewed from another angle. This striking change is not only visually captivating but also provides valuable information about the internal structure of the crystal. The phenomenon of dichroism can be categorized into two main types: linear and circular. Linear dichroism occurs when the absorption of light is dependent on the polarization direction of the light waves. This type is often observed in crystalline materials that have an ordered structure. On the other hand, circular dichroism involves the differential absorption of left-handed and right-handed circularly polarized light. This form of dichroism is particularly important in the study of chiral molecules, which are prevalent in biological systems. In practical applications, dichroism plays a crucial role in various technologies. For example, polarizing filters used in photography and sunglasses rely on the principles of dichroism to enhance image quality and reduce glare. Additionally, researchers utilize dichroism to investigate the properties of new materials, helping to develop advanced products such as liquid crystal displays (LCDs) and optical sensors. Moreover, dichroism is not just limited to scientific applications; it also finds its place in the world of art. Artists and conservators can use the understanding of dichroism to analyze pigments and materials in historical artworks, providing insights into the techniques used by the original creators. This knowledge can aid in restoration efforts, ensuring that artworks are preserved for future generations while maintaining their original integrity. In conclusion, dichroism is a remarkable optical property that reveals much about the interaction between light and matter. Its implications stretch across numerous disciplines, from the natural sciences to the arts, highlighting the interconnectedness of our understanding of the world around us. As we continue to explore the complexities of dichroism, we unlock new possibilities for innovation and appreciation of the beauty inherent in the materials we encounter daily.

二色性是一种迷人的光学现象，发生在某些材料中，当从不同角度或在不同照明条件下观察时，它们会显示出不同的颜色。这种独特的特性最常见于晶体和某些类型的矿物以及特定的合成材料。对二色性的研究在矿物学、材料科学甚至艺术保护等多个领域具有重要意义。理解二色性可以帮助科学家和艺术家更好地欣赏他们所使用材料的复杂性和美感。 要理解二色性的概念，首先必须考虑光与不同物质的相互作用。当光照射到材料上时，它可以被吸收、传输或反射。在二色性的情况下，材料选择性地吸收某些波长的光，从而导致根据观察角度可见不同的颜色。例如，一块电气石从一个方向看可能呈绿色，但从另一个角度看则转变为红色。这种显著的变化不仅在视觉上引人注目，而且提供了关于晶体内部结构的宝贵信息。 二色性现象可以分为两种主要类型：线性和圆形。线性二色性发生在光的吸收依赖于光波的偏振方向时。这种类型通常在具有有序结构的晶体材料中观察到。另一方面，圆形二色性涉及左旋和右旋圆偏振光的差异吸收。这种形式的二色性在研究手性分子时尤为重要，这些分子在生物系统中普遍存在。 在实际应用中，二色性在各种技术中发挥着关键作用。例如，摄影和太阳镜中使用的偏振滤镜依赖于二色性的原理来提高图像质量并减少眩光。此外，研究人员利用二色性来研究新材料的性质，帮助开发先进的产品，如液晶显示器（LCD）和光学传感器。 此外，二色性不仅限于科学应用；它也在艺术界占有一席之地。艺术家和修复师可以利用对二色性的理解来分析历史艺术作品中的颜料和材料，为了解原始创作者使用的技术提供见解。这些知识可以帮助修复工作，确保艺术品在保持其原始完整性的同时得以保存给后代。 总之，二色性是一种显著的光学特性，揭示了光与物质之间相互作用的许多内容。它的影响跨越多个学科，从自然科学到艺术，突显了我们对周围世界理解的相互关联性。随着我们继续探索二色性的复杂性，我们开启了创新的新可能性，并欣赏到我们日常遇到的材料固有的美丽。