论文部分内容阅读
英国里兹大学的物理学家最近研制成功一种新型显微镜——拉曼显微镜,可以用来揭示样品中化学键的质量和所受的应力。这种显微镜也可以被调节到只观察某一种特殊类型的原子。它基本上是目前已广泛应用的拉曼光谱仪的一种变型。拉曼光谱仪在进行测量时,用一束激光照射在样品上,然后测量样品的原子振动谱。一般的拉曼光谱仪记录样品中微小光点上所测量到的全部振动;而新的显微镜则对整个样品都只测量某一特定的振动频率,因而,它能产
A recent study by physicists at the University of Leeds in the UK has developed a new microscope, the Raman microscope, that can be used to reveal the quality of the chemical bonds and stresses in the sample. This microscope can also be adjusted to observe only one particular type of atom. It is basically a variant of the Raman spectrometer that is now widely used. Raman spectrometer in the measurement, with a laser beam irradiation on the sample, and then measure the sample atomic vibration spectrum. A typical Raman spectrometer records all the vibrations measured on tiny spots in a sample; the new microscope measures only a specific vibrational frequency for the entire sample, so it can produce