Developed in the early 90s, scanning probe techniques proved to be reliable tool for understanding intricate material properties such as local electronic structure and electric potential, chemical functionality, nano-mechanical behaviour, semi-conducting property, passivity in aggressive electrochemical medium, architecture and structural dynamics of bio-molecules as well as many other allied physico-chemical aspects. The ability of operating in ambient, ultra high vacuum and simulated physiological and electrochemical environment makes it as unique characterization tool in almost every branch of science and technology. As the quest for advanced technology in various engineering sector increases, the importance of synthesis and control of properties of the materials in the decreasing size domain also increases. Scanning probe techniques has become an indispensible tool in this aspect and help in quantifying interfacial material properties at nano-scale which can be manipulated in large-scale synthesis of functional materials. The talk will discuss with illustrative examples some of the application of scanning probe techniques in the characterization of technological important engineering materials. Highlight of the talk includes conservation of Volta-potential of “frozen-in” iron oxide in perturbing surface sensitive ambiance of dry and humid condition in oxygen-free and oxygen-containing medium, ex-situ and in-situ morphological characterization of passivity of stainless steel in simulated nuclear fuel reprocessing medium, adhesivity of bio-film in commercial Titanium alloy based upon interaction force in unpolarized and polarized conditions.
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