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Portrait of Ivan Maximov. Photo: Kennet Ruona

Ivan Maximov

Associate Professor, Coordinator Exploratory Nanotechnology

Portrait of Ivan Maximov. Photo: Kennet Ruona

Microwave detection at 110 GHz by nanowires with broken symmetry

Author

  • C Balocco
  • AM Song
  • M Aberg
  • A Forchel
  • T Gonzalez
  • J Mateos
  • Ivan Maximov
  • M Missous
  • AA Rezazadeh
  • J Saijets
  • Lars Samuelson
  • Daniel Wallin
  • K Williams
  • L Worschech
  • Hongqi Xu

Summary, in English

By using arrays of nanowires with intentionally broken symmetry, we were able to detect microwaves up to 110 GHz at room temperature. This is, to the best of our knowledge, the highest speed that has been demonstrated in different types of novel electronic nanostructures to date. Our experiments showed a rather stable detection sensitivity over a broad frequency range from 100 MHz to 110 GHz. The novel working principle enabled the nanowires to detect microwaves efficiently without a dc bias. In principle, the need for only one high-resolution lithography step and the planar architecture allow an arbitrary number of nanowires to be made by folding a linear array as many times as required over a large area, for example, a whole wafer. Our experiment on 18 parallel nanowires showed a sensitivity of approximately 75 mV dc output/mW of nominal input power of the 110 GHz signal, even though only about 0.4% of the rf power was effectively applied to the structure because of an impedance mismatch. Because this array of nanowires operates simultaneously, low detection noise was achieved, allowing us to detect -25 dBm 110 GHz microwaves at zero bias with a standard setup.

Department/s

  • Solid State Physics

Publishing year

2005

Language

English

Pages

1423-1427

Publication/Series

Nano Letters

Volume

5

Issue

7

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Topic

  • Nano Technology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1530-6992