Gel Elasticity Modulation
Gel Elasticity Modulation - Related Videos
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Fabrication of Micro-tissues using Modules of Collagen Gel Containing Cells
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Cited by 9 •
2010
Creation of micro-tissues using cylindrical collagen gels, called modules, that contain embedded cells and which surface is coated with endothelial cells.
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Elasticity
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2023
Elasticity is the ability of an object to withstand the effects of distortion and to return to its original size and shape once the forces causing deformation are removed. When an elastic material deforms under the action of an external force, it experiences internal resistance to the deformation. However, if no external force is applied, it returns to its original state. The elasticity of an object can be described by a stress-strain curve, which represents the relationship between stress...
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Gel Purification
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2023
Gel purification is used to recover DNA fragments after electrophoretic separation. DNA recovery from an agarose gel includes three basic steps: binding, washing and eluting from a silica column. DNA is believed to bind to silica in the presence of high salt via a salt bridge. Following binding, DNA is washed of impurities and eluted under low salt conditions disrupting this interaction. This video goes through a step-by-step, generalized procedure for cutting out a band from the gel, gel...
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Elasticity in Concrete
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2024
Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear portion of...
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Elasticity of Demand (Ed)
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2024
Price elasticity of demand is a concept that measures how sensitive people are to changes in prices. Elastic Demand: Consider selling tickets to a concert. When the ticket prices increase, some people might decide not to go and opt for other forms of entertainment, like watching a movie at home or going to a different event. This shows that there are alternative options available, leading to a significant change in demand with a small change in price. Inelastic Demand: Now, think about...
FAQs
Polymer composition and crosslinking density change the organization of the gel network, which changes how readily the material deforms. Composition determines which polymer building blocks contribute to the network, whereas crosslinking density changes the extent of network connectivity. Adjusting either variable gives researchers a way to tune mechanical conditions for biological experiments.
Crosslink type changes how the network is connected, while swelling conditions alter the state in which that network bears deformation. Because elasticity reflects the resulting network structure and mechanical response, these variables can produce different gel behaviors even when researchers use the same general material.
Cells can respond to the mechanical cues presented by a gel, so changing elasticity may alter adhesion, spreading, migration, or differentiation. These responses make elasticity a useful experimental variable in mechanobiology, where researchers examine how physical features of the cellular environment influence biological behavior in controlled models.
A practical workflow begins by selecting a gel system and identifying the desired mechanical condition. Researchers then modify polymer composition, crosslinking density, crosslink type, or swelling conditions. They compare the resulting elastic responses and use the selected formulation in cell culture, tissue engineering, or mechanobiology studies.
Elasticity-controlled gels support cell culture, tissue engineering, and mechanobiology studies. In cell culture, they provide a tunable physical environment; in tissue engineering, they help create gel-based materials with selected mechanical properties; and in mechanobiology, they enable tests of how mechanical cues relate to cellular behavior. The specific application determines which elasticity condition researchers need to examine.
Matching gel elasticity to extracellular tissue conditions can make a biological model more physiologically relevant. Researchers can use this strategy to represent differing tissue stiffnesses and then observe whether cells change adhesion, spreading, migration, or differentiation. The resulting comparisons help connect a material’s mechanical environment with cellular responses in controlled experimental settings.