metachromatism

简明释义

英[ˌmetəˈkrəʊmətɪzəm]美[ˌmetəˈkroməˌtɪzm]

n. [化学] 因光异色现象；变色反应性，异染性

英英释义

单词用法

同义词

反义词

例句

1.The study status on electric metachromatism and gas sensibility of nanometric WO_3 thin film is briefly described. The developing trends of nanometric film are also put forward.

对纳米氧化钨薄膜的电致变色、气敏特性等性质研究现状作了简要概述，提出了纳米氧化钨薄膜的发展前景。

2.The study status on electric metachromatism and gas sensibility of nanometric WO_3 thin film is briefly described. The developing trends of nanometric film are also put forward.

对纳米氧化钨薄膜的电致变色、气敏特性等性质研究现状作了简要概述，提出了纳米氧化钨薄膜的发展前景。

3.Researchers are exploring the use of metachromatism in creating more effective diagnostic tools.

研究人员正在探索在创建更有效的诊断工具中使用metachromatism。

4.Some synthetic dyes exhibit metachromatism, changing color based on the pH of the solution.

一些合成染料表现出metachromatism，根据溶液的pH值改变颜色。

5.The application of metachromatism is crucial in developing new staining techniques for microscopy.

在显微镜新染色技术的发展中，metachromatism的应用至关重要。

6.In histology, the phenomenon of metachromatism allows certain dyes to produce different colors when binding to tissue components.

在组织学中，metachromatism现象使某些染料在与组织成分结合时产生不同的颜色。

7.The study of metachromatism in biological samples can provide insights into cellular structures and functions.

对生物样本中metachromatism的研究可以提供对细胞结构和功能的见解。

作文

In the fascinating world of biology and materials science, the term metachromatism refers to a phenomenon where a substance exhibits a change in color when it is exposed to different wavelengths of light. This intriguing characteristic is particularly noted in certain dyes and biological tissues. For example, when a tissue sample is stained with specific dyes, it may display a distinct color under one type of light and a completely different hue under another. This property is not only visually striking but also serves important functional roles in various scientific applications.Understanding metachromatism requires a basic grasp of how light interacts with materials. Light is made up of different wavelengths, each corresponding to a different color. When light hits an object, some wavelengths are absorbed while others are reflected. In the case of metachromatism, the structure of the material can cause it to absorb and reflect different wavelengths in a way that leads to a noticeable color change. This can occur due to various factors such as pH changes, ionic strength, or the presence of specific ions.One of the most famous examples of metachromatism is found in the field of histology, where it is used to enhance the contrast of microscopic images. Certain stains, like toluidine blue, exhibit metachromatism when they bind to specific cellular components. For instance, when toluidine blue interacts with acidic tissue components, it can appear blue at a neutral pH but shift to a purple or red color at lower pH levels. This property allows scientists to differentiate between various types of tissues and cellular structures more effectively.Beyond biology, metachromatism is also significant in the field of materials science. Researchers are exploring ways to create materials that can change color in response to environmental stimuli. These materials have potential applications in sensors, smart textiles, and even camouflage technology. Imagine a fabric that can change its color based on temperature or light exposure, providing both aesthetic appeal and practical functionality.In conclusion, metachromatism is a remarkable phenomenon that has implications across multiple scientific disciplines. Its ability to alter color in response to different conditions not only provides insights into biological processes but also opens up exciting possibilities for innovative materials. As research continues to delve deeper into the mechanisms behind metachromatism, we can expect to see new applications that harness this unique property for the benefit of society. Understanding this concept is essential for anyone interested in the intersections of biology, chemistry, and materials science. The exploration of metachromatism illustrates the beauty and complexity of the natural world, reminding us that even the simplest things, like color, can reveal profound scientific truths.

在生物学和材料科学的迷人世界中，术语metachromatism指的是一种现象，当一种物质暴露于不同波长的光时，会表现出颜色的变化。这一引人入胜的特性在某些染料和生物组织中尤为显著。例如，当用特定染料染色的组织样本在一种光下显示出明显的颜色，而在另一种光下则呈现出完全不同的色调。这一特性不仅在视觉上引人注目，而且在各种科学应用中也发挥着重要的功能作用。理解metachromatism需要对光如何与材料相互作用有一个基本的了解。光由不同的波长组成，每个波长对应一种不同的颜色。当光照射到物体上时，一些波长会被吸收，而另一些则会被反射。在metachromatism的情况下，材料的结构可以导致它以一种方式吸收和反射不同的波长，从而导致显著的颜色变化。这可能由于多种因素造成，例如pH变化、离子强度或特定离子的存在。metachromatism最著名的例子之一是在组织学领域，它用于增强显微图像的对比度。某些染料，如甲苯胺蓝，在与特定细胞成分结合时表现出metachromatism。例如，当甲苯胺蓝与酸性组织成分相互作用时，在中性pH下可能呈现蓝色，但在较低pH水平下则转变为紫色或红色。这一特性使科学家能够更有效地区分各种类型的组织和细胞结构。除了生物学外，metachromatism在材料科学领域也具有重要意义。研究人员正在探索创建能够响应环境刺激而改变颜色的材料的方法。这些材料在传感器、智能纺织品甚至伪装技术方面具有潜在应用。想象一下，一种能够根据温度或光照变化而改变颜色的面料，既具有美学吸引力，又具备实用功能。总之，metachromatism是一种显著的现象，在多个科学学科中具有重要意义。它在不同条件下改变颜色的能力不仅提供了对生物过程的深入了解，而且为创新材料开辟了令人兴奋的可能性。随着研究继续深入探讨metachromatism背后的机制，我们可以期待看到新的应用，利用这一独特特性造福社会。理解这一概念对于任何对生物学、化学和材料科学交叉点感兴趣的人来说都是至关重要的。对metachromatism的探索展示了自然界的美丽和复杂性，提醒我们即使是最简单的事物，如颜色，也能揭示深刻的科学真理。