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2016 Lord Lewis Lecture: Dynamic Particles for Biological and Chemical Sensing

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This lecture will focus on the design of systems wherein a reconfiguration of the materials can be triggered chemically or mechanically. The utility of these methods is to generate transduction mechanisms by which chemical and biological sensors can be developed. Two different types of systems will be discussed. (1) Assemblies of polymers at air water interfaces and the demonstration of a luminescence strain response upon compression. (2) Dynamic colloids produced from immiscible fluorocarbon/hydrocarbon mixtures and ability to convert the core and shell layers of the droplets as well as the conversion to Janus particles. Surfactant triggered changes in liquid droplets are shown in the figure below. The latter system’s morphology changes can also be triggered in response to chemical, biological, or optical stimuli.

This talk is part of the Materials Chemistry Research Interest Group series.

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