Nanoscale Materials and Semiconductors

Summary

Research in nanoscale materials focuses on engineering novel materials (e.g. metamaterials, 2D semiconductors, ultra-wide-bandgap crystals) to achieve unprecedented control of light and new optoelectronic functionality. These materials exhibit exotic light-matter-heat interactions, from ballistic transport to quantum light sources, enabling device robustness in extreme environments (eg high temperature, radiation exposure, and electromagnetic interference). The challenge is to scale and integrate these materials ensuring uniformity, controlling defects, and engineering bandstructure.

Hyperbolic Calcite Resonators

Bulk Calcite is a novel platform for engineering extreme volume confinement for Phonon-Polaritonics in the mid-Infrared Spectra. This allows for sub-diffraction size resonators for engineering the resonances for compact, highly selective mid-infrared detectors and emitters for blackbody radiometers, spectroscopy, and emerging quantum sensing applications.

Phase Change Materials

Phase Change Materials thin films exhibit non-volatile changes in the optical and electrical properties offering significant potential for compact phase shifters, embedded memory, and reconfigurable functionality. These materials also showcase strong robustness to electromagnetic noise and cryogenic temperature environments.

Low Dimensional Semiconductors

Carbon Nanotubes which has a narrow bandgap (~0.5eV) showcases ballistic transport of electrons and strong plasmon-polariton interactions. Boron Nitride Nanotubes which has a wide bandgap (>5eV) for quantum light sources and exhibit hyperbolic properties for strong phonon-polariton confinement. Both materials exhibit exotic properties and environmental robustness not observed in conventional bulk semiconductors. Engineering the as-deposited arrays are essential for realizing unique functionality.

Boron Nitride Nanotubes

Carbon Nanotubes

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