In situ mechanical quenching of nanoscale silica spheres in the transmission electron microscope

Mackovic M, Niekiel F, Wondraczek L, Bitzek E, Spiecker E (2016)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Scripta Materialia Elsevier

Publisher: Elsevier

Book Volume: 121

Pages Range: 70-74

URI: http://www.sciencedirect.com/science/article/pii/S1359646216301397

DOI: 10.1016/j.scriptamat.2016.04.019

Abstract

A novel approach for in situ mechanical quenching experiments of nanoscale silica spheres inside the transmission electron microscope is presented. Electron irradiation is used to mimic temperature by mediating plastic flow. Quenching under load is achieved by switching-off the electron beam. This is employed in different loading scenarios. Complementary finite element method simulations underline a change of Young's modulus, which strongly depends on the interplay of electron irradiation and mechanical load. We attribute the reduction in Young's modulus to compression-induced structural anisotropy which is frozen-in by rapid quenching and propose a model on how structural anisotropy develops in nanoscale silica.

Authors with CRIS profile

Mirza Mackovic Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Florian Niekiel Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Lothar Wondraczek Professur für Werkstoffwissenschaften (Glas und Keramik) Erik Bitzek Professur für Datenbasierte Materialmodellierung Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)

Additional Organisation(s)

Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Exzellenz-Cluster Engineering of Advanced Materials (EAM) Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM) Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Related research project(s)

In-situ nanomechanics and FIB tomography of thin films (EXC315 EAM (A2-3)) Exzellenz-Cluster Engineering of Advanced Materials Nov. 1, 2012 - Oct. 31, 2017

How to cite

APA:

Mackovic, M., Niekiel, F., Wondraczek, L., Bitzek, E., & Spiecker, E. (2016). In situ mechanical quenching of nanoscale silica spheres in the transmission electron microscope. Scripta Materialia, 121, 70-74. https://doi.org/10.1016/j.scriptamat.2016.04.019

MLA:

Mackovic, Mirza, et al. "In situ mechanical quenching of nanoscale silica spheres in the transmission electron microscope." Scripta Materialia 121 (2016): 70-74.

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