原文由 ssh110 发表:
The main disadvantage that the AFM has compared to the scanning electron microscope (SEM) is the image size. The SEM can show an area on the order of millimetres by millimetres and a depth of field on the order of millimetres. The AFM can only show a maximum height on the order of micrometres and a maximum area of around 100 by 100 micrometres. Additionally, the AFM cannot scan images as fast as an SEM. It may take several minutes for a typical region to be scanned with the AFM, however an SEM is capable of scanning at near real-time (although at relatively low quality).
原文由 shan5233 发表:原文由 张大伟 发表:
要考虑对生物样品表面的破坏,这个很重要
做生物样品推荐用岛津的,其他用di就ok了
现在比较大的这几家公司在生物样品测试中都有自己的拳头产品:Veeco的Bioscope Ⅱ; JPK的Nanowizard; PSIA的SE120; NTMDT的Bio???; MI的BioScan; 还有美国的Novascan....