11 citations · 22 across the 9 of their papers we have counts for
11 papers
Inverse Problems for Screens
Emilia Blåsten, Petri Ola, Lassi Päivärinta
We study the inverse scattering from a screen with using only one incoming time--harmonic plane wave but with measurements of the scattered wave done at all directions. Especially…
Unique Determination of a Planar Screen in Electromagentic Inverse Scattering
Sadia Sadique, Petri Ola, Lassi Päivärint
We show that the far--field pattern of a scattered electromagnetic field corresponding to a single incoming plane--wave uniquely determines a bounded supraconductive planar screen.…
Simultaneous reconstruction of conductivity, boundary shape and contact impedances in electrical impedance tomography
J. P. Agnelli, V. Kolehmainen, M. Lassas +2
The objective of electrical impedance tomography (EIT) is to reconstruct the internal conductivity of a physical body based on current and voltage measurements at the boundary of t…
Partial Data Inverse Problems for Maxwell Equations via Carleman Estimates
Francis J. Chung, Petri Ola, Mikko Salo +1
In this article we consider an inverse boundary value problem for the time-harmonic Maxwell equations. We show that the electromagnetic material parameters are determined by bounda…
On Absence and Existence of the Anomalous Localized Resonance without the Quasi-static Approximation
Henrik Kettunen, Matti Lassas, Petri Ola
The paper considers the transmission problems for Helmholtz equation with bodies that have negative material parameters. Such material parameters are used to model metals on optica…
The interior transmission problem and bounds on transmission eigenvalues
Michael Hitrik, Katsiaryna Krupchyk, Petri Ola +1
We study the interior transmission eigenvalue problem for sign-definite multiplicative perturbations of the Laplacian in a bounded domain. We show that all but finitely many comple…