Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Enrriques, Ashton E.; Howard, Sean; Timsina, Raju; Khadka, Nawal K.; Hoover, Amber N.; Ray, Allison E.; Liu, Ding; Onwumelu, Chioma; Nordeng, Stephan; Mainali, Laxman; Uzer, Gunes; Davis, Paul H.

doi:10.3791/64497

Cited by 5 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During indentation, the resulting forces may damage the cantilever and/or the sample or the tip [29][30][31]. Therefore, it is considered necessary to resort to the proposed method to avoid this problem.…”

Section: Methodsmentioning

confidence: 99%

Quantification of Young's modulus of kaolin, sodalite and nanocomposite based polycaprolactone/sodalite using atomic force microscopy

Elhachemi,

Khellafi,

Bendouba

et al. 2024

Mater. Res. Express

View full text Add to dashboard Cite

The mechanical properties of clays, zeolite, and nanocomposite reinforced by these minerals are unique in terms of their states and functions. Nevertheless, it is difficult to acknowledge the degrees of mechanical properties due to the nanosize of these materials and the broad distribution of these properties. In this paper, the Oliver-Pharr and Hertz models are used to calculate the Young’s modulus of kaoilin, sodalite and nanocomposite using the atomic force microscope (AFM). This research presents a simple and easy way to calculate this modulus without resorting to nanoindentation. Moreover, the morphology of these materials was investigated using this technique. Therefore, it was inferred that the mechanical and morphological properties of the studied materials are completely different, especially nanocomposites, even though they have the same origin, which is kaolinite.

show abstract

Section: Methodsmentioning

confidence: 99%

Quantification of Young's modulus of kaolin, sodalite and nanocomposite based polycaprolactone/sodalite using atomic force microscopy

Elhachemi,

Khellafi,

Bendouba

et al. 2024

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…Elastic modulus measurements were obtained by AFM cantilever-based nanoindentation. 29,30 Epitaxial graphene (Figure S4) showed the highest average stiffness (69.4 GPa), followed by CVD graphene (12.6 GPa), and printed graphene, which had the lowest value (11.5 GPa) for stiffness. All values obtained are considerably lower than the associated substrates and the theoretical Young's modulus of graphene, suggesting that the measured values are primarily influenced by the graphene scaffold fabrication method and/or layer number.…”

Section: Graphene Characterizationmentioning

confidence: 99%

Structure-Property-Processing Correlations of Graphene Bioscaffolds for Proliferation and Differentiation of C2C12 Cells

Karriem

Eixenberger

Frahs

et al. 2023

Preprint

View full text Add to dashboard Cite

Graphene, an atomically thin layer of carbon atoms arranged in a hexagonal lattice, has gained interest as a bioscaffold for tissue engineering due to its exceptional mechanical, electrical, and thermal properties. Graphene's structure and properties are tightly coupled to synthesis and processing conditions, yet their influence on biomolecular interactions at the graphene-cell interface remains unclear. In this study, C2C12 cells were grown on graphene bioscaffolds with specific structure property processing performance (SP3) correlations. Bioscaffolds were prepared using three different methods - chemical vapor deposition (CVD), sublimation of silicon carbide (SiC), and printing of liquid phase exfoliated graphene. To investigate the biocompatibility of each scaffold, cellular morphology and gene expression patterns were investigated using the bipotential mouse C2C12 cell line. Using a combination of fluorescence microscopy and qRT-PCR, we demonstrate that graphene production methods determine the structural and mechanical properties of the resulting bioscaffold, which in turn determine cell morphology, gene expression patterns, and cell differentiation fate. Therefore, production methods and resultant structure and properties of graphene bioscaffolds must be chosen carefully when considering graphene as a bioscaffold for musculoskeletal tissue engineering.

show abstract

“…For the mechanical measurement, RTESP-300 probes were used: tip radius = 8 nm, spring constant = 40 N/m. Tips were calibrated on a sapphire test sample in a similar way than in Enrriques et al, study [31].…”

Section: Scanning Probe Microscopy Measurementsmentioning

confidence: 99%

Laser Ablation Synthesis of Silver Nanoparticles for Polymer Nanocomposites

2023

View full text Add to dashboard Cite

Silver nanoparticles were synthesized via laser ablation in two different organic solvents (tetrahydrofuran and toluene). The influence of solvent choice on the production and behavior of silver nanoparticles dispersed in a polystyrene matrix was investigated. UV–Vis spectroscopy, ellipsometry and scanning probe microscopy techniques were used for characterization. The silver nanoparticles’ optical properties were modified by the existence of a core-shell structure appearing in toluene-ablated particles. For both solvents and, in particular, for the toluene case, the particles showed good dispersion in the matrix. Additionally, the interphase behavior of the doped polymer films was influenced by the synthesis process, affecting the mechanical and optical (dielectric) properties. The observed results for the nanocomposite are attributed to the formation of a core-shell structure around the particles directly due to the ablation in organic solvents. These findings contribute to the understanding of silver/polystyrene nanocomposites and offer opportunities for developing tailored functional materials by using laser ablation in liquids.

show abstract

Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid

Cited by 5 publications

References 41 publications

Quantification of Young's modulus of kaolin, sodalite and nanocomposite based polycaprolactone/sodalite using atomic force microscopy

Quantification of Young's modulus of kaolin, sodalite and nanocomposite based polycaprolactone/sodalite using atomic force microscopy

Structure-Property-Processing Correlations of Graphene Bioscaffolds for Proliferation and Differentiation of C2C12 Cells

Laser Ablation Synthesis of Silver Nanoparticles for Polymer Nanocomposites

Contact Info

Product

Resources

About