Approaching the Limits of Strength: Measuring the Uniaxial Compressive Strength of Diamond at Small Scales.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 26683095.
- Also identified by DOI 10.1021/acs.nanolett.5b04989.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Diamond ⟨100⟩- and ⟨111⟩-oriented nanopillars were fabricated by focused ion beam (FIB) milling from synthetic single crystals and compressed using a larger diameter diamond punch. Uniaxial compressive failure was observed via fracture with a plateau in maximum stress of ∼0.25 TPa, the highest uniaxial strength yet measured. This corresponded to maximum shear stresses that converged toward 75 GPa or ∼ G/7 at small sizes, which are very close to the ultimate theoretical yield stress estimate of G/2π.