We investigate the feasibility of using dielectric spectra to classify hazardous and nonhazardous liquids. The dielectric spectra of several liquids was obtained with a shielded-open coaxial fixture, and we present a new full-wave model for calculating the complex permittivity of liquids using this fixture. Using the measured complex permittivity for each liquid, we examine several classificati...

This work is a literature review on the use of microwaves for pasteurization processes and/ or the reduction of the microbiological biota in foods. It presents background as well as latest information on the methodology being used in these processes, putting emphasis on the newest developments of the technology being used today.

Metasurfaces have enabled the realization of several optical functionalities over an ultrathin platform, fostering exciting field flat optics. Traditional metasurfaces are achieved by arranging a layout static meta-atoms to imprint desired operation on impinging wavefront, but their functionality cannot be altered. Reconfigurability and programmability next important step broaden impact, adding...

Microwave-assisted processes have recognized advantages over more conventional heating techniques. However, the effects on the materials' microstructure are still a matter of study, due to the complexity of the interaction between microwaves and matter, especially at high temperatures. Recently developed advanced microwave instrumentation allows the study of high temperature microwave heating p...

Suspensions of Escherichia coli and Bacillus subtilis spores were exposed to conventional thermal and microwave energy at 2,450 MHz. The degrees of inactivation by the different energy sources were compared quantitatively. During the transient heating period by microwave energy, approximately a 6 log cycle reduction in viability was encountered for E. coli. This reduction was nearly identical t...

A precise understanding of product obsolescence is fundamental for extending lifetimes and promoting a circular economy. Previous studies have revealed that various factors affect other than failure. However, very few quantitatively examined the relationships between these lifetime. Therefore, this study investigated relationship lifetime consumer appliances (digital cameras, microwaves, PCs) r...