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Absorbing optical antennas [electronic resource] : applications in nanophotonics and combustion

The promise of optical antennas is the ability to tame the light to behave in ways not achievable using traditional optical components. For example, our results here demonstrate that a careful engineering of optical antennas allow the strong, even perfect, absorption of light in ultra-thin geometries, i.e., geometries much thinner than the wavelength of light. Enabled by geometry-sensitive antenna resonances, this absorption behavior can also be realized for a broad selection of colors. A detailed theoretical analysis of the observed perfect absorption phenomenon reveals the role of incoherently interacting degenerate electric and magnetic resonances in overcoming the well-known absorption limit for infinitesimally thin films. With another set of experiments, we show that strongly absorbed optical energy in aluminum nanoantennas can be used to heat them efficiently above their melting temperature and stimulate an explosive exothermic oxidation reaction called melt-dispersion mechanism. Importantly, we see that engineering the specific geometry of the constituent particles allows an unprecedented control of aluminum ignition, both spectrally and spatially, through the fine tuning of the optical antenna resonances.

Biosensors in food processing, safety, and quality control

This book details the latest developments in sensing technology and its application in food industry. It explores the opportunities created by the chemical and biosensensing technology and improvements performed in recent years for better food quality, better food safety, better food processing and control, and better input for food industry. The chapters in this book have been divided into three sections: basic principles of chemical and biosensing technology, biosensors for food processing and control, and biosensors for food safety--Provided by publisher

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