Franks Ryan, Morefield Sean, Wen Jianguo, Liao Dongxiang, Alvarado Jorge, Strano Michael, Marsh Charles
Construction Engineering Research Laboratory, U.S. Army Corps of Engineers, Champaign, IL 61820, USA.
J Nanosci Nanotechnol. 2008 Sep;8(9):4404-7.
Preparation of nanomaterial dispersion or nanofluids requires good characterization techniques, including particle size and morphological measurements. A reliable and straight-forward process to characterize and quantify the degree of dispersion and agglomeration is needed. A wet-cell transmission electron microscope (TEM) technique has been developed to make comparisons between sonicated and hand-shaken solutions of both aluminum oxide nanoparticles and multi-walled carbon nanotubes. In each case, the wet-cell TEM technique reveals images of nanoparticles well dispersed in aqueous solutions due in part to the use of ultrasonic power instead of simply manual shaking and stirring. The technique is currently qualitative and shows great potential for a host of nanotechnology applications.
制备纳米材料分散体或纳米流体需要良好的表征技术，包括粒度和形态测量。需要一种可靠且直接的方法来表征和量化分散和团聚程度。已开发出一种湿室透射电子显微镜（TEM）技术，用于比较氧化铝纳米颗粒和多壁碳纳米管的超声处理溶液和手动振荡溶液。在每种情况下，湿室TEM技术都能显示出纳米颗粒在水溶液中良好分散的图像，部分原因是使用了超声功率，而不是简单的手动振荡和搅拌。该技术目前是定性的，在许多纳米技术应用中显示出巨大潜力。
