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在微观领域对物质进行观察和研究中，人们发明了各种显微镜。但是光学显微镜由于受到光的波长的限制而无法达到很高的分辨率，Ｘ射线衍射技术则要求观察样品必须是晶体，透射电镜则需要对观察样品进行超薄切片。所有这些要求使人们的观察受到了限制，因此人们开始研制更加先进?
In the field of microscopic observation and research of materials, people invented a variety of microscopes. However, the optical microscope can not achieve high resolution due to the wavelength of light. The X-ray diffraction requires the observation sample to be a crystal and the TEM requires the ultra-thin sectioning of the observation sample. All of these requirements make people's observations have been limited, so people began to develop more advanced?