Removing gold coating from sem samples
Removing gold coating from sem samples
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DOI：
10.1111/j.1475-4983.2007.00718.x
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发表时间：
2007-11-01
期刊：
影响因子：
2.6
通讯作者：
Mitchell, John C.
中科院分区：
文献类型：
--
作者：
Leslie, Stephen A.;Mitchell, John C.
微体古生物学研究中的一个重要工具是使用扫描电子显微镜（SEM）进行分析和成像。通常需要在样品上涂上一层薄薄的金或金钯合金，以防止表面带电，促进二次电子的发射，使样品均匀导电，并提供均匀的表面用于分析和成像。然而，用黄金涂覆标本是一种半破坏性的过程，可以掩盖标本的表面，并且通常的策展实践是禁止重要标本的涂层。我们描述了一种非破坏性的，简单的和廉价的技术，使用KCN（或NaCN），玻璃罐，纸巾，纸板和通风橱从SEM样品中去除金涂层。该技术几乎不需要额外处理样品，并且不需要将样品置于溶液中。
An essential tool in micropalaeontological studies is analysis and imaging using a scanning electron microscope (SEM). It is commonly necessary to coat the sample with a thin layer of gold or gold-palladium alloy in order to prevent charging of the surface, to promote the emission of secondary electrons so that the specimen conducts evenly, and to provide a homogeneous surface for analysis and imaging. However, coating a specimen with gold is a semi-destructive process that masks the surface of specimens, and a common curatorial practice is to prohibit coating of important specimens. We describe a non-destructive, simple and inexpensive technique that uses KCN (or NaCN), a glass jar, paper towels, cardboard and a fume hood for the removal of gold coatings from SEM samples. This technique requires little additional handling of the specimen, and there is no need to place the specimen in a solution.