TY - CHAP A1 - Weichert, F. A1 - Gaspar, M. A1 - Zybin, A. A1 - Gurevich, E. L. A1 - Görtz, A. A1 - Timm, C. A1 - Müller, H. A1 - Marwedel, P. T1 - Plasmonen-unterstützte Mikroskopie zur Detektion von Viren T2 - Bildverarbeitung für die Medizin 2010 Y1 - 2010 SN - 978-3-642-11967-5 PB - Springer CY - Berlin ER - TY - JOUR A1 - Zybin, A. A1 - Kuritsyn, Yu. A. A1 - Gurevich, E. L. A1 - Temchura, V. V. A1 - Üeberla, K. A1 - Niemax, K. T1 - Real-time Detection of Single Immobilized Nanoparticles by Surface Plasmon Resonance Imaging JF - Plasmonics N2 - In this manuscript, a new approach in surface plasmon resonance microscopy is presented. The method provides optical real-time detection of single nanoparticles on surfaces. The potential of the method is demonstrated recording spherical dielectric particles as small as 40 nm in diameter and single HIV virus-like particles having diameters of similar to 100 nm both immobilized on functionalized surfaces. The surface plasmon resonance signal in the binding spots was found to be almost linearly proportional to the size of the particles and, therefore, surpasses the intensity of Mie scattering on spherical particle (dependence similar to r(-6)) by orders of magnitude for small objects. The physical reason leading to this strong effect is discussed. Y1 - 2010 U6 - http://dx.doi.org/10.1007/s11468-009-9111-5 SN - 1557-1955 VL - 5 SP - 31 EP - 35 ER - TY - JOUR A1 - Gurevich, E. L. A1 - Kittel, S. A1 - Hergenröder, R. A1 - Astrov, Yu A. A1 - Portsel, L. M. A1 - Lodygin, A. N. A1 - Tolmachev, V. A. A1 - Ankudinov, A. V. T1 - Modification of GaAs surface by low-current Townsend discharge JF - J. Phys. D: Appl. Phys. N2 - The influence of stationary spatially homogeneous Townsend discharge on the (1 0 0) surface of semi-insulating GaAs samples is studied. Samples exposed to both electrons and ions in a nitrogen discharge Y1 - 2010 U6 - http://dx.doi.org/10.1088/0022-3727/43/27/275302 SN - 0022-3727 VL - 43 SP - 275302 ER - TY - JOUR A1 - Weichert, F. A1 - Gaspar, M. A1 - Timm, C. A1 - Zybin, A. A1 - Gurevich, E. L. A1 - Engel, M. A1 - Mueller, H. A1 - Marwedel, P. T1 - Signal Analysis and Classification for Surface Plasmon Assisted Microscopy of Nanoobjects JF - Sens. Act. B-Chem. N2 - The need for portable and on site screening methods for viruses is evident in face of virus infections that can spread lastly in a heavily connected world. A robust and efficient method for detecting viruses is a novel technique called Plasmon Assisted Microscopy of Nanoobjects. It is based on the acquisition of images from a sensor surface exploiting the behavior of surface plasmons in the presence of nanoobjects. In this paper an efficient image analysis approach with respect to the requirements of the sensor is presented and an embedded image processing system for this purpose is introduced. The processing pipeline comprises three steps and starts with restorating the images by removing the background and filtering artifacts. The acquired image series is analyzed pixel by pixel in a second pipeline step in order to detect pixels containing nanoobjects. In a last step pixels are aggregated to nanoobject structures. The paper introduces in the context of this virus detection method a configurable embedded system that was used for rapid prototyping of the image analysis algorithms in a flexible way. (C) 2010 Elsevier B.V. All rights reserved. Y1 - 2010 U6 - http://dx.doi.org/10.1016/j.snb.2010.08.005 SN - 0925-4005 VL - 151 SP - 281 EP - 290 ER -