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Publisher DOI: 10.1080/21663831.2017.1396263
Title: Measurement of local crystal lattice strain variations in dealloyed nanoporous gold
Language: English
Authors: Mahr, Christoph 
Müller-Caspary, Knut 
Graf, Matthias 
Lackmann, Anastasia 
Grieb, Tim 
Schowalter, Marco 
Krause, Florian Fritz 
Mehrtens, Thorsten 
Wittstock, Arne 
Weissmüller, Jörg 
Rosenauer, Andreas 
Keywords: Nanoporous gold;lattice strain;sensor;actuator;nano-beam electron diffraction
Issue Date: 3-Nov-2017
Publisher: Taylor & Francis
Source: Materials Research Letters 1 (6): 84-92 (2018-01-02)
Journal or Series Name: Materials Research Letters 
Abstract (english): Reversible macroscopic length changes in nanoporous structures can be achieved by applying electric potentials or by exposing them to different gases or liquids. Thus, these materials are interesting candidates for applications as sensors or actuators. Macroscopic length changes originate from microscopic changes of crystal lattice parameters. In this report, we show spatially resolved measurements of crystal lattice strain in dealloyed nanoporous gold. The results confirm theory by indicating a compression of the lattice along the axis of cylindrically shaped ligaments and an expansion in radial direction. Furthermore, we show that curved npAu surfaces show inward relaxation of the surface layer. (Figure presented) IMPACT STATEMENT We show spatially resolved measurements of strain in nanoporous gold confirming theory: Crystal lattice is compressed along the axis of cylindrical ligaments and expanded in radial direction, surfaces relax inward.
DOI: 10.15480/882.2160
ISSN: 2166-3831
Institute: Werkstoffphysik und -technologie M-22 
Type: (wissenschaftlicher) Artikel
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