Interaction between electromagnetic waves and biological materials

Research output: Chapter in Book/Report/Conference proceedingChapter

6 Scopus citations


Applications of radio frequency and microwave in medicine and biology are diverse, as exemplified by what will be covered in the future chapters of this book or found in many other articles and books. In many of those applications, the interaction between electromagnetic waves and biological materials should be characterized. This often necessitates having proper knowledge of the complex permittivity of these materials. Complex permittivity of biological substances is dispersive and is often modeled by Debye or Cole-Cole relaxation models. In this chapter, the relaxation theory of dielectrics, which explains the frequency variation of complex permittivity at DC through millimeter wave frequencies, is discussed. Moreover, various relaxation mechanisms and complex permittivity dispersion modeling for biological materials are explained. In addition, some methods of measurement of complex permittivity, using resonant, reflection, and transmission (two-port) techniques are presented.

Original languageEnglish (US)
Title of host publicationPrinciples and Applications of RF/Microwave in Healthcare and Biosensing
PublisherElsevier Inc.
Number of pages49
ISBN (Electronic)9780128092187
ISBN (Print)9780128029039
StatePublished - Jan 1 2017

All Science Journal Classification (ASJC) codes

  • General Engineering


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