Koski Group Research Overview

The Koski group is a Materials Chemistry Group. Our current projects are below:
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Novel 2D Materials Chemistry

A 2D layered material consists of a series of tightly bonded layers one to five atoms thick alternating with van der Waals gaps. These gaps can serve as hosts for a variet of intercalant guests. We are currently developing new synthesis of chalcogenide and oxide 2D layered nanomaterials using vapor-liquid-solid, vapor-solid, hydrothermal, solvothermal, and colloidal growth methods.For greater chemical control, we are also developing a series of novel intercalation chemistries such as intercalation of zero-valent metals and chemical synthetic routes to alter 2D material properties in-operando.
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Opto-Mechanical Properties of Materials

Brillouin laser light scattering is a non-invasive laser light scattering technique that can measure the sound velocity of a material. We are currentlyusing Brillouin scattering to measure the mechanical properties of a variety of materials. We are also developing new Brillouin scattering methodologies to detect scattering from a variety of difficult to measure samples including 2D layered nanomaterials.
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Phase Transitions in 2D Materials.

Phase transitions in materials are essential in variety of technological applications ranging from phase change memory to chromism. Using in-situ transmission electron microscopy (TEM) and in-situ optical techniques, we are investigating the range of phase transitions in 2D layered nanomaterials.