Advanced Materials: TechConnect Briefs 2015Advanced Materials TechConnect Briefs 2015

Nanoscale Materials Characterization Chapter 1

Investigation on capillary force of nanoscale water cluster using a Hybrid AFM-MEMS System

S. Kwon, B. Kim, W. Jhe
Seoul National University, Korea

pp. 47 - 50

Keywords: nanoscale, nanomeniscus, interface, water, AFM, MEMS, capillary force

The interaction force between surfaces has a major effect on the behavior of the materials, such as nanoparticles, proteins, various bio-molecules, and so on. The phenomenon of stiction influenced by interaction forces impacts the repetitive use of the devices based on the micro/nanoscale materials. Although there have been several studies to discover the origin of the interaction forces including Van der Waals, Casimir, Electrostatic, and capillary forces for the purpose of energy conservation with various systems, it is difficult to solve and still challenging issues to investigate the force effected molecular behaviors. In particular, the role of liquids at the interface is more important to understand the vital phenomena in the field of nano-biosience. We have developed the unique versatility and complementarity of the hybrid AFM–MEMS scheme, which provides both direct and indirect information of the discontinuous as well as continuous forces associated with the water nanomeniscus. Here I will demonstrate the strength of the hybrid AFM–MEMS system to exploit the nanoscale phenomena, and also provide additional information on the intrinsic physical quantities of the nanoscale meniscus.