Over the last two decades nanoparticles have become increasingly important in sensor technologies, often being used as either signal transduction elements or signal enhancement tools. We explore the use of gold nanoparticles in optical sensors, focusing on ways we can enhance accessibility by lowering the cost and the instrumentation requirements of the sensor device. We show that colorimetric readout of a localized plasmon resonance sensor is possible using the camera feature of a smartphone to capture and quantify changes in various color parameters in sensor chip images. Notably, the transition to colorimetric sensing presents new design rules for nanoparticle-based optical sensors that should change the way we approach sensor fabrication for point-of-use devices.

Portable localized surface plasmon resonance sensors

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.