Scanning Impedance Microscopy (SIM) is one of the novel scanning probe microscopy (SPM) techniques, which has been developed to taking image from sample surface, providing quantitative information with high lateral resolution on the interface capacitance, and investigating the local capacitance–voltage (C–V) behavior of the interface and AC transport properties. The SIM is an ordinary AFM equip...

In this paper, we consider the Dirichlet and impedance boundary value problems for the Helmholtz equation in a non-locally perturbed half-plane. These boundary value problems arise in a study of timeharmonic acoustic scattering of an incident eld by a sound-soft, in nite rough surface where the total eld vanishes (the Dirichlet problem) or by an in nite, impedance rough surface where the total ...

Impedance biosensors are a class of electrical biosensors that show promise for point-of-care and other applications due to low cost, ease of miniaturization, and label-free operation. Unlabeled DNA and protein targets can be detected by monitoring changes in surface impedance when a target molecule binds to an immobilized probe. The affinity capture step leads to challenges shared by all label...

The paper describes a fast and simple method to find the deviation of impedance of different tissues from the average values known from the literature. A technique similar to the Electrical Impedance Tomography is used assuming the geometry of organs to be known. To find the individual impedance deviations, we assume that the change of the surface potentials depends linearly on a small (up to 1...