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US 11,237,114 B2Granted
Hydrogel bead, chemical sensor including the same, container and electronic article including the chemical sensor
AssigneeKookmin University Industry Academy Cooperation Foundation
InventorsHyun Jung Lee, Soo Hyun Kim, Mi Rim Ham
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Abstract
Disclosed herein are a hydrogel bead, a chemical sensor including the same, and an electronic product including the chemical sensor. The hydrogel bead includes at least one type of polysaccharide physically crosslinked with a cation or an anion, and a pH indicator dye.
Claims14
A chemical sensor comprising a hydrogel bead comprising:
- at least one type of polysaccharide physically crosslinked with a cation or an anion;
- and
- a pH indicator dye,
- wherein the hydrogel bead is a core-shell bead,
- wherein the hydrogel bead is arranged, without a support, on an inner surface of a container that comes into contact with a target material, or the hydrogel bead is provided on a porous fibrous base, and a porous transparent film is disposed on a surface of the hydrogel bead, and
- wherein the pH indicator dye is a dye that causes color conversion when a target material is diffused in an aqueous solution inside the hydrogel bead.
3 more elements
Dependencies are inferred from the claim text.