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Approaching the Limits of Strength: Measuring the Uniaxial Compressive Strength of Diamond at Small Scales
- Source :
- Nano letters. 16(1)
- Publication Year :
- 2015
-
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.
- Subjects :
- 010302 applied physics
Materials science
Mechanical Engineering
Diamond
Bioengineering
Nanotechnology
02 engineering and technology
General Chemistry
engineering.material
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Focused ion beam
Stress (mechanics)
Shear (sheet metal)
Compressive strength
0103 physical sciences
engineering
Fracture (geology)
General Materials Science
Composite material
0210 nano-technology
Nanomechanics
Nanopillar
Subjects
Details
- ISSN :
- 15306992
- Volume :
- 16
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nano letters
- Accession number :
- edsair.doi.dedup.....82c054e0784bb1400e50dce6b2f4c56f