Smart Hydrogels
Smart Hydrogels - Related Videos
07:25
Collagen Hydrogels
0 Views •
2023
Collagen is another widely used biomaterial that has found popularity in commercial applications, such as photography. Collagen has more recently been used in tissue engineering applications, by creating hydrogels that provide structure to engineered tissue. This video introduces collagen as a biomaterial, demonstrates how it is harvested from porcine skin, and shows how the material is used to create a hydrogel for tissue engineering applications. Finally, several applications of the material...
08:33
Hydrogel Synthesis
0 Views •
2023
Source: Amber N. Barron, Ashlea Patterson, and Taylor D. Sparks, Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT Hydrogels are a versatile class of cross-linked polymers produced through relatively simple procedures and with generally inexpensive materials. They can be formed from solution and involve a polymer backbone formed from monomer reagents, an initiator which makes the polymer reactive and a crosslinking species which binds the polymer chains...
08:35
Are You Smart or Hardworking? How Praise Influences Children's Motivation
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2023
Source: Laboratories of Judith Danovitch and Nicholaus Noles—University of Louisville Imagine teaching two children how to skate. It is a hard task for both of them, and they fall down frequently. After falling down for the first time, one child says that skating is too hard and wants to go home. The other child seems to enjoy the challenge and eagerly gets back up after falling down each time. Why do the children have such different attitudes about the same task? One reason may be that they...
09:47
FRET Imaging in Three-dimensional Hydrogels
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Cited by 3 •
2016
Förster resonance energy transfer (FRET) imaging is a powerful tool for real-time cell biology studies. Here a method for FRET imaging cells in physiologic three-dimensional (3D) hydrogel microenvironments using conventional epifluorescence microscopy is presented. An analysis for ratiometric FRET probes that yields linear ratios over the activation range is described.
12:45
Mechanical Stimulation of Chondrocyte-agarose Hydrogels
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Cited by 29 •
2012
The biosynthesis of cartilaginous extracellular matrix by chondrocytes can be affected by application of mechanical stimuli. This method describes the technique of applying dynamic compressive strains to chondrocytes encapsulated in 3D constructs and the evaluation of induced changes in chondrocyte metabolism.
FAQs
Smart hydrogels regulate transport by coupling environmental sensing to network structure. Responsive groups change the balance between swelling and collapse when pH, temperature, ionic strength, or enzymes change. These structural shifts alter how easily embedded molecules move through the water-filled network, allowing release to vary with local conditions rather than remaining constant. This mechanism supports localized delivery in infection and immune studies.
Crosslinks maintain the three-dimensional network and retain water while preventing the material from dispersing. Their presence helps determine how the hydrogel responds when environmental conditions change, because swelling or collapse occurs within a constrained polymer structure. This balance is important for controlling transport, shaping permeability, and maintaining a useful biomaterial form during delivery or tissue-engineering experiments.
These properties determine how a hydrogel behaves as a biomaterial and how embedded molecules are handled. Swelling and permeability influence transport, mechanics affect the material's physical behavior, and degradation changes how long the network persists. Considering them together helps researchers tune a system for controlled delivery, wound-dressing studies, or experimental models of inflammation and pathogen interactions.
Design choices should connect the intended biological use with the desired environmental response and material behavior. Researchers can consider whether the system should localize an antimicrobial compound, immunomodulator, or diagnostic probe, then evaluate which stimulus, transport behavior, mechanics, and degradation profile best fit the affected tissue or experimental model. This approach links hydrogel properties to the intended outcome.
The overview identifies three main payload categories: antimicrobial compounds, immunomodulators, and diagnostic probes. Localizing these agents at affected tissues can support more precise treatment or measurement while potentially reducing unwanted exposure elsewhere. In immunology and infection research, the same delivery concept can therefore address pathogen control, regulation of immune activity, or observation of biological conditions.
Their tunable mechanics, permeability, and degradation support two complementary applications. In wound-dressing research, these properties help investigate a material's suitability for localized treatment at damaged tissue. In experimental models, hydrogels can provide systems for studying host responses, pathogen interactions, and inflammation. These uses extend the technology beyond delivery toward controlled investigation of tissue and immune processes.