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Carbon nanotubes (CNTs) enhanced breast tumor detection have been proposed to mitigate the low contrast between the tumor and the glandular tissue in the microwave induced thermo-acoustic tomography (MITAT). In this paper, we discuss an iterative reconstruction method (IRM) to tackle the issue of defocusing due to the acoustic heterogeneity of the dense breast underlying the CNTs-enhanced MITAT. The...
A comprehensive physics-based model is developed to understand and explain the process of continuous production of biodiesel via the application of microwaves.
Recently, the authors have developed a number of new hierarchical and singular basis functions for field representation in two- and three-dimensional cells. Scalar and vector basis functions of both interpolatory and hierarchical kind together with some singular functions of the additive kind are discussed in detail, with several results, in a recent SciTech-IET book (R.D. Graglia and A.F. Peterson:...
To ensure numerical stability, the Courant-Friedrichs-Lewy (CFL) condition has to be imposed in an explicit time-domain numerical method. It limits the time step and therefore computational efficiency. In this paper, we use the FDTD (finite difference time domain) method as an example and present a stable wave-equation based FDTD method with a simple solution procedure. The method is based on the...
In this paper, we explore the accuracy limits of an energy conserved splitting finite difference time domain (EC-S-FDTD) method applied to the Maxwell equations which has recently been proposed to solve the Electromagnetic (EM) problem. The numerical dispersion properties of the EC-S-FDTD methods are investigated. The results of this analysis are useful for the application of the method, and for the...
This paper presents the design of a corrugated tapered slot antenna (TSA) with application to microwave imaging (MI) system for brain stroke detection. The antenna is excited by a stepped transmission line through slotline transition. Corrugations are used to reduce the size of the antenna and also improve its radiation performance. Simulated and measured results demonstrate that the proposed antenna...
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