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在液体-蒸汽接口处被动化金属纳米晶体的湿性:计算机模拟研究

Kafui A Tay1, Fernando Bresme

  • 1Department of Chemistry, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom.

Journal of the American Chemical Society
|October 26, 2006
PubMed
概括

黄金纳米晶体上的表面活性剂链的长度显著影响它们在空气-水接口上的湿行为. 较长的链条会导致具有较大的接触角度和改变形状的稳定纳米粒子.

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To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...