Functional NiTi grids for in situ straining in the TEM

authored by: Ulrich Schürmann, Christoph Chluba, Niklas Wolff, Daria Smazna, Rodrigo Lima De Miranda, Philipp Junker, Rainer Adelung, Eckhard Quandt, Lorenz Kienle
Abstract: In situ measurements are a pivotal extension of conventional transmission electron microscopy (TEM). By means of the shape memory alloy NiTi thin film Functional Grids were produced for in situ straining as alternative or at least complement of expensive commercial holders. Due to the martensite-austenite transition temperature straining effects can be observed by use of customary heating holders in the range of 50 to 100 °C. The grids can be produced in diversified designs to fit for different strain situations. Micro tensile tests were performed and compared with finite element simulations to estimate the applied forces on the sample and to predict the functionality of different grid designs. As a first example of this Functional Grid technology, we demonstrate the impact of applying a strain to a network of ZnO tetrapods.
Organisation(s): Institute of Continuum Mechanics
Type: Article
Journal: Ultramicroscopy: a journal committed to the advancement of new methods, tools and theories in microscopy
Volume: 182
Pages: 10-16
No. of pages: 7
Publication date: 11.2017
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics, Instrumentation
Electronic version(s): https://doi.org/10.1016/j.ultramic.2017.06.003 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{1365cfd184354a6f91024ffd9350b620,
title = "Functional NiTi grids for in situ straining in the TEM",
abstract = "In situ measurements are a pivotal extension of conventional transmission electron microscopy (TEM). By means of the shape memory alloy NiTi thin film Functional Grids were produced for in situ straining as alternative or at least complement of expensive commercial holders. Due to the martensite-austenite transition temperature straining effects can be observed by use of customary heating holders in the range of 50 to 100 °C. The grids can be produced in diversified designs to fit for different strain situations. Micro tensile tests were performed and compared with finite element simulations to estimate the applied forces on the sample and to predict the functionality of different grid designs. As a first example of this Functional Grid technology, we demonstrate the impact of applying a strain to a network of ZnO tetrapods.",
keywords = "Finite element simulations, In situ straining, Shape memory alloys, Transmission electron microscopy, ZnO",
author = "Ulrich Sch{\"u}rmann and Christoph Chluba and Niklas Wolff and Daria Smazna and {Lima De Miranda}, Rodrigo and Philipp Junker and Rainer Adelung and Eckhard Quandt and Lorenz Kienle",
note = "Funding information: This work was funded by the German Research Foundation (DFG) as part of the Collaborative Research Center 1261–Magnetoelectric sensors from composite materials to biomagnetic diagnostics (SFB 1261). The authors want to thank Christin Szillus, Matthias Frank, Niko Carstens and Christiane Zamponi for sample preparation. We thank Dustin R. Jantos for the creation of the finite element mesh.",
year = "2017",
month = nov,
doi = "10.1016/j.ultramic.2017.06.003",
language = "English",
volume = "182",
pages = "10--16",
journal = "Ultramicroscopy: a journal committed to the advancement of new methods, tools and theories in microscopy",
}