Email

spanier [at] drexel.edu

About our group

In the Mesoscale Materials Laboratory we explore how symmetry drives the interaction of light with excitations in solids, and how films crystallize from an amorphous phase. Welcome to our site.

It is well known how the properties of a solid arise from its symmetry, whether this is defined within the bulk interior, or by the presence of a surface or interface. In the Mesoscale Materials Lab we study how symmetry-breaking at different length scales alters how light interacts with matter and can challenge conventional notions about the behavior of materials and their properties.

Project Highlights

Dielectric meta-materials

The domain-wall structure and dynamics are found to enhance, rather than inhibit, the high-frequency performance of an intrinsically tunable material, obtaining ultra-low loss and exceptional frequency selectivity. Illustration credit: Felice Macera. Relevant publication

Mobility

Ballistic photoconduction and a mesoscopic electron free path can be attained at room temperature in a ferroelectric insulator.
Relevant Publication

Hot elections multiply

Nanoscale electrodes and the bulk photovoltaic effect together permit high quantum yield.
Relevant Publication

Cooler crystallization

Solid phase epitaxy of ferroelectric perovskite oxide films can occur from amorphous films produced by atomic layer deposition at temperatures much lower than the usual bulk crystallization temperatures.
Relevant Publication

Surface triggered subsurface UV light

Chemisorption and desorption of water fragments permits reversible quantum well ultraviolet luminescence. Relevant publication

Recent News

Solar energy conversion breakthrough with help from a ferroelectrics pioneer

Solar energy conversion breakthrough with help from a ferroelectrics pioneer

August 9, 2016BY Mmladmin

Designers of solar cells may soon be setting their sights higher as a discovery by a team of researchers has revealed a class of materials that could be better at converting sunlight into energy than