Hydrogel-Based Sensor Networks: Compositions, Properties, and ApplicationsA Review

Hydrogels are three-dimensional porous polymeric networks prepared by physical or chemical cross-linking of hydrophilic molecules, which can be made into smart materials through judicious chemical modifications to recognize external stimuli; more specifically, this can be accomplished by the integra...

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Bibliographic Details
Published in:ACS applied bio materials 2021-01, Vol.4 (1), p.140-162
Main Authors: Sun, Xiaohang, Agate, Sachin, Salem, Khandoker Samaher, Lucia, Lucian, Pal, Lokendra
Format: Article
Language:English
Subjects:
Biosensing Techniques - instrumentation
Biosensing Techniques - methods
Gases - analysis
Humans
Humidity
Hydrogels - chemistry
Hydrogels - metabolism
Ions - analysis
Nanostructures - chemistry
Polymers - chemistry
Polymers - metabolism
Toxins, Biological - analysis
Wearable Electronic Devices
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Summary:Hydrogels are three-dimensional porous polymeric networks prepared by physical or chemical cross-linking of hydrophilic molecules, which can be made into smart materials through judicious chemical modifications to recognize external stimuli; more specifically, this can be accomplished by the integration with stimuli-responsive polymers or sensing molecules that has drawn considerable attention in their possible roles as sensors and diagnostic tools. They can be tailored in different structures and integrated into systems, depending on their chemical and physical structure, sensitivity to the external stimuli and biocompatibility. A panoramic overview of the sensing advances in the field of hydrogels over the past several decades focusing on a variety protocols of hydrogel preparations is provided, with a major focus on natural polymers. The modifications of hydrogel composites by incorporating inorganic nanoparticles and organic polymeric compounds for sensor applications and their mechanisms are also discussed.
ISSN:2576-6422
2576-6422
DOI:10.1021/acsabm.0c01011