Development of Quantitative In Situ TEM Nanomechanical Testing for Polymers

Low-temperature plasticity of olivine revisited with in situ TEM nanomechanical testing

The rheology of the lithospheric mantle is fundamental to understanding how mantle convection couples with plate tectonics. However, olivine rheology at lithospheric conditions is still poorly understood because experiments are difficult in this temperature range where rocks and mineral become very brittle. We combine techniques of quantitative in situ tensile testing in a transmission electron...

In Situ Nanomechanical Testing of Crystalline Nanowires in Electron Microscopes

This article reviews in situ mechanical testing of crystalline nanowires in scanning and transmission electron microscopes, focusing on bottom–up synthesized, single-crystalline nanowires. Major experimental methods including resonance, bending, tension and buckling are summarized. In addition to commonly encountered experimental issues, deformation mechanisms learned from the in situ nanomecha...

Quantitative in situ TEM tensile testing of an individual nickel nanowire.

In this paper, we have demonstrated the usage of a novel micro-mechanical device (MMD) to perform quantitative in situ tensile tests on individual metallic nanowires inside a transmission electron microscope (TEM). Our preliminary experiment on a 360 nm diameter nickel nanowire showed that the sample fractured at an engineering stress of ∼ 1.2 GPa and an engineering strain of ∼ 4%, which is con...

In-Situ Mechanical Testing of Nano-Component in TEM

Source Truncation and Exhaustion: Insights from Quantitative in situ TEM Tensile Testing

A unique method for quantitative in situ nanotensile testing in a transmission electron microscope employing focused ion beam fabricated specimens was developed. Experiments were performed on copper samples with minimum dimensions in the 100-200 nm regime oriented for either single slip or multiple slip, respectively. We observe that both frequently discussed mechanisms, truncation of spiral di...