Near-field imaging with a loaded wire medium
نویسندگان
چکیده
Chandra S. R. Kaipa,1,* Alexander B. Yakovlev,1 Stanislav I. Maslovski,2 and Mário G. Silveirinha2 1Department of Electrical Engineering, The University of Mississippi, University, Mississippi 38677, USA 2Department of Electrical Engineering-Instituto de Telecomunicações, University of Coimbra, 3030 Coimbra, Portugal (Received 25 June 2012; revised manuscript received 4 September 2012; published 1 October 2012)
منابع مشابه
Graphene-loaded wire medium for tunable broadband subwavelength imaging
In this paper, we demonstrate that a wire medium (WM) slab loaded with graphene sheets enables the enhancement of the near field for subwavelength imaging at terahertz frequencies. The analysis is based on the nonlocal homogenization model for WM with the additional boundary condition at the connection of wires to graphene. The principle of the operation of the proposed lens depends on the enha...
متن کاملWideband Loaded Wire Bow-tie Antenna for Near Field Imaging Using Genetic Algorithms
The potentially broad application area in engineering design using Genetic Algorithm (GA) has been widely adopted by many researchers due to its high consistency and accuracy. Presented here is the initial design of a wideband non-dispersive wire bow-tie antenna using GA for breast cancer detection applications. The ultimate goal of this design is to achieve minimal late-time ringing but at hig...
متن کاملNumerical and Experimental Analysis of a Wire Medium Collimator for MRI
This paper analyses the collimation behavior of a wire medium devoted to magnetic resonance imaging. In a first part, the point spread function of a doubly infinite wire medium is analyzed for the magnetic field with the help of the Array Scanning Method. In a second part, we present two methods to evaluate the field transmission by the wire medium, based on the measure of the magnetic field co...
متن کاملCorrosion Inhibition of Sodium Phosphate for Coarse and Near Ultrafined-Grain Mild steel surface
An ultrafine grain surface layer with average crystallite size of 28 nm was produced on annealed mild steel through a wire brushing process. The effects of grain size reduction on the inhibition performance of sodium phosphate were investigated using polarization and electrochemical impedance spectroscopy (EIS) measurements. The crystal grain size of wire brushed surface was analyzed by X-ray d...
متن کاملDesign and fabrication of a high-Q near-field probe for subsurface crack detection
Non-destructive detection and evaluation of invisible cracks in metal structures is an important matter in several critical environments including ground transportation, air transportation and power plants. In this paper, a high-Q near-field Microwave probe is designed and fabricated using defected ground structures for surface and subsurface crack detection in metal structures. For this purpos...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2012