Article citationsMore>>

Foster, K.R. and Schwan, H.P. (1996) Dielectric Properties of Tissues. In: Polk, C. and Postow, E., Eds., Handbook of Biological Effects of Electromagnetic Fields, 2nd Edition, CRC Press, Boca Raton, 25-102.

has been cited by the following article:

• TITLE: Using an Off-the-Shelf Lock-In Detector for Admittance Spectroscopy in the Study of Plants

  AUTHORS: Fábio D. R. Monteiro, Peter Stallinga

  KEYWORDS: Admittance Spectroscopy, In Vivo, Non Invasive

  JOURNAL NAME: Agricultural Sciences, Vol.11 No.4, April 1, 2020

  ABSTRACT: We report on the development of an electrical characterization admittance spectroscopy equipment and method based on an off-the-shelf lock-in detector that is cheap and yet highly sensitive. It is concluded that a contacted constant-pressure electrode configuration is preferable. It was further determined that the temperature does not have great impact in the measured values, but relative humidity of air can be important, especially in the constant-gap electrode configuration. In-situ measurements are difficult since the coupling of the plant with the environment is of high importance. Another aspect is the cables; they are important in that they have to be terminated by their characteristic impedance (50 Ωin our case) to avoid reflections that introduce artificial attenuation and phase shifts in the signal. We introduce a fingerprint plot type to be able to distinguish between various plants and other specimens, and can actually detect the aqueous state of a plant.