By a News Reporter-Staff News Editor at Science Letter -- Research findings on Science are discussed in a new report. According to news originating from Guangzhou, People's Republic of China, by NewsRx correspondents, research stated, "The adhesion between two parallel solid surfaces is of great interest with the rapid development of micro-nano devices and instruments. The adhesion forces between a flat tip with a diameter similar to 1.7 mu m and some surface have been determined by recording the force-displacement curves with an atomic force microscope (AFM)."
Our news journalists obtained a quote from the research from the South China University of Technology, "The flat tip is used to prevent wear and mimic the adhesion between two parallel surfaces. The free energy of the solid surface is calculated by the contact angles between the probe liquids and the surface. The adhesion force between parallel solid surfaces cannot be predicted by the theory of thermodynamic surface free energy. The adhesion measurements were carried out under ambient conditions, in a nitrogen-filled glove box, under distilled water, and under potassium chloride (KCl) solution. The outcome shows that the real contact area without the applied load is only a small proportion of the apparent contact area. The measurement stability and repeatability of adhesion by the AFM depend on the surface characterization, measurement methods and the environment. Under different environments, there are different interactions and factors affecting the adhesion force, and the dominant interactions and factors may be different too."
According to the news editors, the research concluded: "The various interactions and factors are mutually coupled to determine the final adhesion force."
For more information on this research see: Study on microscale adhesion between solid surfaces with scanning probe. Science China-Technological Sciences, 2013;56(12):2934-2952. Science China-Technological Sciences can be contacted at: Science Press, 16 Donghuangchenggen North St, Beijing 100717, Peoples R China (see also Science).
The news correspondents report that additional information may be obtained from T.M. Lai, S China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510640, People's Republic of China.
Keywords for this news article include: Asia, Science, Guangzhou, People's Republic of China
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