孔径小于10 nm玻璃纳米移液管的透射电镜几何表征
Geometrical Characterization of Glass Nanopipettes with Sub-10 nm Pore Diameter by Transmission Electron Microscopy
摘要:
玻璃纳米移液管广泛用于纳米科学中的各种应用。在大多数应用中,重要的是表征其几何参数,例如孔径尺寸和尖端区域的内锥角。对于具有小于10 nm孔径和薄壁厚度的纳米移液管,透射电子显微镜(TEM)必须在其精确的几何测量中发挥最重要的作用。然而,这种测量仍然是一个挑战,因为电子束照射产生的热量会使亚10 nm纳米移液管变形。在这里,我们提供了制备TEM样品的方法,这些方法不会导致这种微小的纳米移液管变形。
英文摘要:
Glass nanopipettes are widely used for various applications in nanosciences. In most of the applications, it is important to characterize their geometrical parameters, such as the aperture size and the inner cone angle at the tip region. For nanopipettes with sub-10 nm aperture and thin wall thickness, transmission electron microscopy (TEM) must be most instrumental in their precise geometrical measurement. However, this measurement has remained a challenge because heat generated by electron beam irradiation would largely deform sub-10-nm nanopipettes. Here we provide methods for preparing TEM specimens that do not cause deformation of such tiny nanopipettes.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。