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Interfacial deformation & electron transfer

Formation of interface is inevitable in nature. The electronic interaction between two objects, which are physically separated otherwise, can lead to local reconfiguration or redistribution of atoms or electrons between them, causing nano to pico level deformation. The question we are trying to answer is how this ultra-small deformation affects charge transport across the heterointerface, and the goal is to find out how to control this transport from a mechanics viewpoint.



The figure shows electron density for an interface between a semiconducting carbon nanotube and SiO2 (0001) substrate. The locations marked by "A" indicate the channels that serve as bridges for transferring electrons from the nanotube to the substrate. How do we tweak this interfacial transport?

Further reading   Interface-induced bandgap reduction and electron transfer in semiconducting carbon nanotube
                            M. Zubaer Hossain, Applied Physics Letters 96, 053118 (2010)

                            Chemistry at the graphene-SiO2 interface
                            M. Zubaer Hossain, Applied Physics Letters 95, 143125 (2009)