Near-field imaging by negative permittivity media

✍ Scribed by W. T. Lu; S. Sridhar

• Book ID: 102515622
• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 244 KB
• Volume: 39
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.11191

✦ Synopsis

Abstract

The imaging of the near field by a slab of negative permittivity medium is discussed. The performance of this flat lens is limited by the working wavenumber k~0~ and the slab thickness d. For k~0~d ≪ 0.937, the resolution of the flat lens can be smaller than the wavelength and depends logarithmically on 1/k~0~d. The electric field is finite everywhere, but will diverge algebraically as one reduces k~0~d → 0. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 282–286, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11191