Applications of Nanoindentation

Fischer-Cripps, Anthony C.

doi:10.1007/978-1-4419-9872-9_12

Cited by 65 publications

(102 citation statements)

References 10 publications

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“…Brittleness was also computed by dividing the elastic modulus (E) by the plastic hardness (H), which accounts for spatial elastic deformation prior to permanent damage [31]. This parameter is useful to examine the resistance of a material to fracture because a ductile material has a higher E/H value [32].…”

Section: Methodsmentioning

confidence: 99%

Regional variation of bone tissue properties at the human mandibular condyle

Jeong

Kosel

et al. 2015

Bone

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The temporomandibular joint (TMJ) bears different types of static and dynamic loading during occlusion and mastication. As such, characteristics of mandibular condylar bone tissue play an important role in determining the mechanical stability of the TMJ under the macro-level loading. Thus, the objective of this study was to examine regional variation of the elastic, plastic, and viscoelastic mechanical properties of human mandibular condylar bone tissue using nanoindentation. Cortical and trabecular bone were dissected from mandibular condyles of human cadavers (9 males, 54 to 96 years). These specimens were scanned using microcomputed tomography to obtain bone tissue mineral distribution. Then, nanoindentation was conducted on the surface of the same specimens in hydration. Plastic hardness (H) at a peak load, viscoelastic creep (Creep/Pmax), viscosity (η), and tangent delta (tan δ) during a 30 second hold period, and elastic modulus (E) during unloading were obtained by a cycle of indentation at the same site of bone tissue. The tissue mineral and nanoindentation parameters were analyzed for the periosteal and endosteal cortex, and trabecular bone regions of the mandibular condyle. The more mineralized periosteal cortex had higher mean values of elastic modulus, plastic hardness, and viscosity but lower viscoelastic creep and tan δ than the less mineralized trabecular bone of the mandibular condyle. These characteristics of bone tissue suggest that the periosteal cortex tissue may have more effective properties to resist elastic, plastic, and viscoelastic deformation under static loading, and the trabecular bone tissue to absorb and dissipate time-dependent viscoelastic loading energy at the TMJ during static occlusion and dynamic mastication.

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Section: Methodsmentioning

confidence: 99%

Regional variation of bone tissue properties at the human mandibular condyle

Jeong

Kosel

et al. 2015

Bone

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“…Using this equation, the indentation depth appropriate for a soft coating on a rigid substrate [27] was chosen to be less than 30% of the lithiated samples calculated thickness. The continuous stiffness measurement (CSM) technique [28] was used to measure Young's modulus and hardness as a function of the indentation depth.…”

Section: Methodsmentioning

confidence: 99%

Mechanical properties of SiLi_xthin films at different stages of electrochemical Li insertion

Zinn

Borhani-Haghighi

Ventosa

et al. 2014

Phys. Status Solidi A

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The mechanical properties of amorphous Si thin films, lithiated electrochemically to different Si-Li compositions are studied by ex situ nanoindentation. The compositions of the films are adjusted using an electrochemical routine that corrects for the Li consumed by SEI layer growth during initial lithiation. The mechanical properties such as Young's modulus and hardness are derived from nanoindentation. For compositions between Si and SiLi 2.5 the Young's modulus decreases with increasing Li content from $160 GPa to $8 GPa and the hardness decreases from $14 GPa to $0.1 GPa. The yield strength values, as deduced from hardness measurements, decrease from $5 GPa to 0.05 GPa. AFM imaging is used on the electrochemically cycled films to assess the SEIs impact on the nanomechanical measurements. XPS depth-profiling of the electrochemically cycled sample indicated a Li concentration gradient across the film thickness.

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“…The distance between each indents was kept at least three times the maximum diagonal of the imprint in order to avoid the mutual influence of adjacent indentations. The mechanical properties were obtained according to the Oliver and Pharr theory [33].…”

Section: Nanoindentationmentioning

confidence: 99%

Nanoindentation of single‐crystal Bi₂Te₃ topological insulators grown with the Bridgman–Stockbarger method

Lamuta

Cupolillo

Politano

et al. 2016

Physica Status Solidi (b)

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In this work, bismuth telluride (Bi 2 Te 3 ) single crystals were grown from melted polycrystalline Bi-Te material using the Bridgman-Stockbarger method. Crystalline quality and surface chemistry were investigated through X-ray diffraction analysis and X-ray photoelectron spectroscopy. The mechanical properties were investigated by means of depth-sensing nanoindentation tests carried out using the continuous stiffness measurement (CSM) technique. In turn, the distribution of material hardness and Young's modulus in the depth direction (i.e., perpendicular to the single crystal basal plane) were resolved and quantitative comparisons with the available data extracted from previous literature works were drawn. It is shown that the obtained single crystals are free of contaminants and/or oxide phases and that the mechanical properties lie between those reported in recent literature for Bi 2 Te 3 polycrystalline thin films and 2D nanosheets.

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Applications of Nanoindentation

Cited by 65 publications

References 10 publications

Regional variation of bone tissue properties at the human mandibular condyle

Regional variation of bone tissue properties at the human mandibular condyle

Mechanical properties of SiLi_xthin films at different stages of electrochemical Li insertion

Nanoindentation of single‐crystal Bi₂Te₃ topological insulators grown with the Bridgman–Stockbarger method

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Applications of Nanoindentation

Cited by 65 publications

References 10 publications

Regional variation of bone tissue properties at the human mandibular condyle

Regional variation of bone tissue properties at the human mandibular condyle

Mechanical properties of SiLixthin films at different stages of electrochemical Li insertion

Nanoindentation of single‐crystal Bi2Te3 topological insulators grown with the Bridgman–Stockbarger method

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Product

Resources

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Mechanical properties of SiLi_xthin films at different stages of electrochemical Li insertion

Nanoindentation of single‐crystal Bi₂Te₃ topological insulators grown with the Bridgman–Stockbarger method