Interfaces & Defect Phenomena in Advanced Materials
(Supported by DOE-BES, NSF-MRSEC, SRC, Intel, NSF-MRI, ANL)
Interfaces and defects are ubiquitous in modern materials systems and devices. In particular, multifunctional materials properties and phenomena are inevitably influenced by complex interfacial and defect structures.
In this research theme, we tailor model and functional interfaces and analyze them extensively using advanced microscopy, scanning probe and synchrotron x-ray scattering. We monitor the dynamics of interfacial and defect phenomena using in-situ characterization techniques, and measure their localized and bulk properties.
Of particular recent interest are interfaces in thermoelectric materials. Thermoelectric materials convert waste into electricity utilizing the Seebeck effect. Our group has made seminal contributions to increasing the so-called ZT, which is a figure of merit for thermoelectrics. With key collaborator, Prof. Mercouri Kanatzidis (Chem/ANL) we have developed world-record breaking ZT performance in bulk thermoelectrics. This is an exciting area which involves core materials science principles applied to thermoelectrics. Another focus includes multifunctional oxides, comprising synergistic ferroelectric, ferromagnetic and optical properties and interfaces in nanopattern-substrate systems. VPD group is world renowned in our efforts to understand interfacial effects in materials.
Links to Other Dravid Group Research Themes:
Spatially & Dimensionally Confined Structures and Assembly
Interfaces and Defect Phenomena in Advanced Materials
Synthesis, Patterning and Microscopy of Nanostructures
“Theranostic” Nanostructures: Combined Biomedical Imaging & Targeted Therapeutics
Integrated Nanosystems for Biochemical Sensing & Diagnostics
Novel Microscopy and Analysis