fluorescence spectrum

简明释义

荧光光谱

英英释义

例句

1.The scientist analyzed the fluorescence spectrum of the sample to identify its chemical composition.

科学家分析了样品的荧光光谱以确定其化学成分。

2.The biomedical application of the fluorescence spectrum is crucial for cancer detection.

荧光光谱的生物医学应用对于癌症检测至关重要。

3.By examining the fluorescence spectrum, researchers could detect the presence of specific proteins in the cells.

通过检查荧光光谱，研究人员能够检测细胞中特定蛋白质的存在。

4.In environmental monitoring, the fluorescence spectrum helps in assessing water quality.

在环境监测中，荧光光谱有助于评估水质。

5.The fluorescence spectrum can provide valuable information about the electronic states of molecules.

荧光光谱可以提供有关分子电子状态的宝贵信息。

作文

The study of light and its interactions with matter has always fascinated scientists, leading to numerous discoveries in various fields. One of the most intriguing phenomena in this realm is fluorescence, which occurs when a substance absorbs light at one wavelength and then emits light at a longer wavelength. This process can be quantitatively described using the concept of the fluorescence spectrum (荧光光谱). The fluorescence spectrum is a graphical representation that shows how much light is emitted by a fluorescent material at different wavelengths after it has been excited by a light source.Understanding the fluorescence spectrum is crucial for many applications, including biological imaging, chemical sensing, and material characterization. In biological research, for instance, fluorescent markers are often used to label specific proteins or cells. When these labeled entities are excited by a specific wavelength of light, they emit light that can be captured and analyzed. The resulting fluorescence spectrum provides valuable information about the presence and concentration of the target molecules.In addition to its applications in biology, the fluorescence spectrum is also vital in the field of chemistry. Chemists utilize this technique to identify and quantify substances in a mixture. By comparing the fluorescence spectrum of an unknown sample to those of known standards, researchers can determine the composition of the sample. This method is particularly useful because it can detect very low concentrations of substances that might be difficult to measure using other techniques.Moreover, the fluorescence spectrum plays a significant role in materials science. Researchers study the fluorescence spectrum of various materials to understand their properties better. For example, certain polymers exhibit unique fluorescent properties that can be exploited in creating advanced materials for electronics or photonics. By analyzing the fluorescence spectrum, scientists can tailor the properties of these materials for specific applications, enhancing their performance and functionality.The fluorescence spectrum is not just a tool for identification; it also provides insights into the dynamics of fluorescent processes. For instance, the shape and intensity of the fluorescence spectrum can reveal information about the environment surrounding the fluorescent molecules, such as viscosity and temperature. This aspect is particularly important in the development of sensors that rely on fluorescence to detect changes in their surroundings.In conclusion, the fluorescence spectrum (荧光光谱) is a powerful analytical tool that offers insight into the behavior of fluorescent materials. Its applications span across multiple disciplines, including biology, chemistry, and materials science, making it an invaluable resource for researchers. As technology advances, the ability to analyze and interpret fluorescence spectra will continue to evolve, leading to new discoveries and innovations that harness the power of light in understanding the world around us.