Gawad, Shady, Sun, Tao, Green, Nicolas G and Morgan, Hywel
Impedance spectroscopy using maximum length sequences: Application to single cell analysis.
Review of Scientific Instruments, 78, . (doi:10.1063/1.2737751).
A maximum length sequence MLS is used to perform broadband impedance spectroscopy on a dielectric sample. The method has a number of advantages over other pulse-based or frequency sweep techniques. It requires the application of a very short sequence of voltage steps in the microsecond range and therefore allows the measurement of time-dependent impedance of a sample with high temporal resolution over a large bandwidth. The technique is demonstrated using a time-invariant passive RC network. The impedance of single biological cell flowing in a microfluidic channel is also measured, showing that MLS is an ideal method for high speed impedance analysis.
Actions (login required)