2020 42nd Annual International Conference of the IEEE Engineering in Medicine &Amp; Biology Society (EMBC) 2020
DOI: 10.1109/embc44109.2020.9176216
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Ultrasonic Hydrogel Biochemical Sensor System

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Cited by 3 publications
(2 citation statements)
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“…[40][41][42][43] In comparison to other biomaterials, hydrogels possess increased biocompatibility, tunable biodegradability, mechanical strength, porous structure, and can be responsive to a number of stimuli including temperature, pH, solvents, glucose, and antigens. [40,44,45] Hydrogel swelling can be read via colloidal crystal reflection color (e.g., in glucose-responsive contact lenses), [46][47][48] motion of optical encoders, [49] cantilever bending, [50,51] changes in electrical resistance, [52,53] pressure, [54][55][56] optical Bragg gratings, [57,58] magnetoelastic resonance, [59,60] ultrasound, [61][62][63] or others. [64][65][66][67] In vitro acrylamide and polyacrylic acid-based hydrogels have been shown to be resistant to changes in protein matrix and reactive oxygen species.…”
Section: Sensor Fabrication and Characterization In Human Peritoneal ...mentioning
confidence: 99%
“…[40][41][42][43] In comparison to other biomaterials, hydrogels possess increased biocompatibility, tunable biodegradability, mechanical strength, porous structure, and can be responsive to a number of stimuli including temperature, pH, solvents, glucose, and antigens. [40,44,45] Hydrogel swelling can be read via colloidal crystal reflection color (e.g., in glucose-responsive contact lenses), [46][47][48] motion of optical encoders, [49] cantilever bending, [50,51] changes in electrical resistance, [52,53] pressure, [54][55][56] optical Bragg gratings, [57,58] magnetoelastic resonance, [59,60] ultrasound, [61][62][63] or others. [64][65][66][67] In vitro acrylamide and polyacrylic acid-based hydrogels have been shown to be resistant to changes in protein matrix and reactive oxygen species.…”
Section: Sensor Fabrication and Characterization In Human Peritoneal ...mentioning
confidence: 99%
“…Further functionality of hydrogels relevant to bioelectronics follows from their capability for converting chemical stimuli, such as changes in concentrations of ions, molecules, and proteins, into volumetric changes (Figure a) . Recent progress utilizes surface hydrogel coatings to create corresponding changes in conductivity or capacity in an electrical sensing element, , or in electromagnetic properties in a wireless module, , or in the attenuation ratio associated with ultrasonic interactions. , Examples of the first mode of interaction involve chemiresistive ionic hydrogels integrated onto flexible interdigital electrodes as the basis for a soft artificial tongue (Figure b) . Exposure to astringent compounds leads to the formation of hydrophobic aggregates that transform the hydrogel from a microporous network into a hierarchical micro/nanoporous structure with enhanced ionic conductivity.…”
Section: Chemical Propertiesmentioning
confidence: 99%