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Portrait of Heiner Linke; Photo: Kennet Ruona

Heiner Linke

Professor, Deputy dean at Faculty of Engineering, LTH

Portrait of Heiner Linke; Photo: Kennet Ruona

Fabrication of bottle-shaped nanochannels in fused silica using a self-closing effect

Author

  • Mariusz Graczyk
  • Martina Balaz
  • Heiner Linke
  • Ivan Maximov

Summary, in English

The spatial control of molecular motor function, using nanostructured surfaces, is of great interest for the development of commercial devices for diagnostics and high-throughput drug screening with molecular motors as targets. In the present study we have fabricated 100-300 nm wide nanochannels, completely subsurfaced on fused silica chips, with the aim to interface them with a microfluidic system. Such a system will allow for changes in the chemical environment surrounding molecular motors, with minimal influence on their directional motion. This will be achieved by changing the chemical environment in a perpendicular direction to the motor motion and allowing the chemical substances to diffuse in and out of the nanochannels via a small slit (5-10 nm) on the top of the nanochannels. To create this slit, and to control its width, we here demonstrate the use of a self-closing effect based on the volume increase (2.27 times) during oxidation of silicon. The details of the fabrication steps (EBL, RIE and oxidation) are discussed. (C) 2012 Elsevier B.V. All rights reserved.

Department/s

  • Solid State Physics
  • NanoLund

Publishing year

2012

Language

English

Pages

173-176

Publication/Series

Microelectronic Engineering

Volume

97

Document type

Journal article

Publisher

Elsevier

Topic

  • Condensed Matter Physics

Keywords

  • Nanochannels
  • Electron beam lithography
  • Oxidation
  • Fused silica

Status

Published

Research group

  • Nanometer structure consortium (nmC)

ISBN/ISSN/Other

  • ISSN: 1873-5568