Mechanical Topological Insulators

 Mechanical Topological Insulators Jacob Moran with Harsh Mathur In this project we will study mechanical topological insulators. Yu and Mathur have found that the elastic modes of bilayer graphene are analogous to the electronic states of topological insulators. Using a continuum elasticity model they find that the elastic waves are...

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Photorefractive properties of liquid crystal-filled bacterial cellulose mats

Caroline Novak with Kenneth Singer Photorefractive properties of liquid crystal-filled bacterial cellulose mats The photorefractive effect is a phenomenon associated with nonlinear optical materials in which the refractive index of the material varies with the application of light. One demonstration of this effect is dynamic holography. Energy transfer between diffracted beams...

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Developing New Techniques for Characterizing Optical Properties of Millimeter Wavelength Detectors

Adele Zawada with John Ruhl Developing New Techniques for Characterizing Optical Properties of Millimeter Wavelength Detectors Poster Characterization of the Cosmic Microwave Background (CMB) is a major focus of modern experimental research in cosmology and astrophysics. CMB photons carry important information that could expand our understanding about the origin and content of...

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Orientation Waves in Colloidal Crystals

Rachel Capelouto with Rolfe PetschekOrientation Waves in Colloidal Crystals Crystals are usually thought of as the condensation of density waves.  However, in some systems, notably blue phase liquid crystals, and, according to recent results in our group also hard tetrahedra, the formation of a crystal comes from the condensation...

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