Drexel

   Goran Karapetrov

Research

The qualitatively new behavior of materials at small length scales provides new vistas for engineering materials with exciting physical properties. As the size of the sample shrinks, conventional bulk thermodynamics becomes irrelevant and we enter the realm of mesoscopic physics. The equilibrium behavior of small systems is governed by the prevailing number of surface atoms that behave differently from the bulk ones. The electronic properties are also subject to reduced number of available electronic states. We take advantage of different scanning probe microscopy and spectroscopy techniques to elucidate the local electronic properties of materials that are relevant to solving energy problems.