Search

One of the applications of microwave tomography, which recovers the dielectric profiles based on the scattered-field data, is the detection of breast cancers. Here, we propose a new method, which aims to collect thermoacoustic signals generated during the period of microwave illumination, and use them for construction of the finite-element mesh for microwave tomography. Our preliminary two-dimensional study carefully links the physical processes that underlies this hybrid detection approach. [ABSTRACT FROM AUTHOR]

This paper presents a numerical study of light interaction with the human retinal photoreceptor. The photoreceptors, cells in the retina responsible for monochromatic vision and color discrimination, differ in shape and size. The cell type (rod or cone) and the variety among the cone cells (S, M, and L) condition their peak absorption wavelength (blue, green, or red). In our work, we observe the outersegment of the photoreceptor as a micro-size optical filter by modeling its interaction with the light wave. Our finite-difference time-domain results suggest that the physical structure of the photoreceptor outersegment can affect its filtering properties. [ABSTRACT FROM AUTHOR]

Undergraduate electromagnetic field courses entail significant teaching and learning challenges. The use of simulation technologies in these courses can be an effective teaching strategy if designed properly. An assessment-based approach for identifying difficult concepts to incorporate into simulation-oriented learning is investigated. The potential benefits of the approach are illustrated with a case study. [ABSTRACT FROM AUTHOR]