显微镜
群(周期表)
化学
材料科学
生物物理学
纳米技术
物理
生物
光学
有机化学
作者
C. Daniel Frisbie,Lawrence F. Rozsnyai,Aleksandr Noy,Mark S. Wrighton,Charles M. Lieber
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:1994-09-30
卷期号:265 (5181): 2071-2074
被引量:977
标识
DOI:10.1126/science.265.5181.2071
摘要
Mapping the spatial arrangement of chemical functional groups and their interactions is of significant importance to problems ranging from lubrication and adhesion to recognition in biological systems. A force microscope has been used to measure the adhesive and friction forces between molecularly modified probe tips and organic monolayers terminating in a lithographically defined pattern of distinct functional groups. The adhesive interactions between simple CH(3)/CH(3), CH(3)/COOH, and COOH/COOH functional groups correlate directly with friction images of sample surfaces patterned with these groups. Thus, by monitoring the friction between a specifically functionalized tip and sample, one can produce friction images that display predictable contrast and correspond to the spatial distribution of functional groups on the sample surface. Applications of this chemically sensitive imaging technique are discussed.
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