Pyramidal Indenter
Pyramidal Indenter - Related Videos
08:21
Quantitative Hardness Measurement by Instrumented AFM-indentation
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Cited by 6 •
2016
This experimental protocol describes how atomic force microscopy can be used to measure hardness at the true nanometer scale and to detect single atomistic plasticity events.
07:07
Biomechanical Characterization of Human Soft Tissues Using Indentation and Tensile Testing
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Cited by 111 •
2016
Tissue biomechanics is important for maintaining cell shape and function and for determining phenotype. This report demonstrates non-destructive mechanical protocols for characterizing elastic and viscoelastic properties of human soft tissues, which can be directly applied to tissue-engineered substrates to allow a close matching of engineered materials to native tissue.
02:08
Generating Cortical Pyramidal Neurons from Human Neural Stem Cells
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2025
This video describes a method for preparing glass coverslips coated with polyornithine and laminin to enhance the adhesion and growth of neural stem cells. The technique involves sequential incubations and washes, facilitating the formation of a supportive matrix that promotes neuronal cell growth and differentiation, mimicking structures found in the neurons.
11:19
Characterizing Multiscale Mechanical Properties of Brain Tissue Using Atomic Force Microscopy, Impact Indentation, and Rheometry
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Cited by 36 •
2016
We present a set of techniques to characterize the viscoelastic mechanical properties of brain at the micro-, meso-, and macro-scales.
02:44
Impact Indentation for Assessing the Mechanical Properties of a Mouse Brain Tissue
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2025
Source: Canovic, E. P., et. al., Characterizing Multiscale Mechanical Properties of Brain Tissue Using Atomic Force Microscopy, Impact Indentation, and Rheometry. J. Vis. Exp. (2016)The video demonstrates using impact indentation to measure the mechanical properties of a hydrated mouse brain tissue, including stiffness, energy dissipation, and damping, through probe displacement and velocity analysis.
FAQs
The measured curve links the applied force to the depth reached by the probe, providing more than a single visual impression of deformation. Analyzing that relationship supports estimates of stiffness, hardness, and elastic modulus, so researchers can describe distinct aspects of a tissue’s mechanical response rather than relying on one general measurement.
Local measurements preserve information about where a mechanical reading comes from. In developmental biology, that spatial focus allows tissue mechanics to be considered alongside specific regions undergoing growth, morphogenesis, or differentiation. The resulting connection between physical properties and location can help clarify how the mechanical environment relates to cell behavior during tissue formation.
Measurements made during different developmental contexts can reveal how tissue mechanics change during growth, morphogenesis, and differentiation. These observations place mechanical properties in the same developmental framework as changing cell behavior. The approach therefore supports questions about how physical conditions accompany tissue formation and the emergence of functional tissues.
A researcher positions the hard pyramidal probe at a tissue surface, applies a controlled force, records the resulting penetration depth, and analyzes the force–displacement curve. The estimated mechanical properties can then be compared with the developmental state or tissue context being studied, keeping the measurement connected to its biological question.
The essential inputs are a hard pyramidal probe, a tissue or material surface, a controlled applied force, and a record of penetration depth. These elements generate the force–displacement data needed for analysis. A clearly defined relationship between force and depth is important because the reported stiffness, hardness, and elastic modulus are derived from that measurement.
This approach is relevant when researchers need to characterize mechanical changes in developing tissues and relate them to cell behavior. It can address questions involving growth, morphogenesis, and differentiation, where tissue mechanics may change as development proceeds. The resulting measurements help connect physical tissue properties with the formation of functional tissues.