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STM as a tool to control the fabrication of nanosystems

Ferreira, Q.

STM as a tool to control the fabrication of nanosystems, Proc European Materials Research Society (E-MRS) - Fall Meeting EMRS Fall, Warsaw, Poland, Vol. , pp. - , September, 2018.

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Abstract
Scanning tunnelling microscopy (STM) is one of the most commonly used techniques for high resolution imaging of molecules and also to measure their electrical properties at the single-molecule level[1-5]. It is a technique that has been used to control the formation of self-assembled monolayers revealing the parameters which are involved in their formation whether they are physical parameters (e.g. concentration of solutes, wettability, contact angles, superficial tension, temperature variations) or chemical parameters (e.g. molecule structure, orbital configuration). Mainly, the STM performed at the liquid/solid interface is an ideal tool to investigate self-assembly phenomena in real time imaging the molecules adsorption dynamics[2]. Recently, the STM has been used to build multicomponent molecular systems, e.g., self-assembled monolayers with more than one molecular element, vertical supramolecular structures synthetized in-situ[3,4], molecular switches[2], nanostructured and biocompatible interfaces[5]. This work reviews the methodology which is involved in the development of these systems revealing details on how to use the STM to monitor their fabrication[6].