MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202641050146 A) filed by University Of Kerala, Thiruvananthapuram, Kerala, on April 20, for 'flexible biodegradable sweat-responsive nanocopper-water hyacinth biopolymer polygraph sensor and method of fabrication thereof.'
Inventor(s) include Sankaranarayana Iyer Sankararaman; Mohanachandran Nair Sindhu Swapna; and Latha Suresh Kumar Amritha.
The application for the patent was published on May 1, under issue no. 18/2026.
According to the abstract released by the Intellectual Property India: "A flexible biodegradable sweat-responsive sensing device (100) comprising a flexible sensing substrate (102), and a method for fabrication of the device (100) is disclosed. The sensing substrate (102) comprises a polymer matrix (104) comprising an aquatic biomass and polyvinyl alcohol (PVA) composite, wherein the aquatic biomass is derived from water hyacinth and the polymer matrix (104) is capable of hygroscopic swelling upon exposure to perspiration-derived fluids. A plurality of copper nanoparticles (106) is dispersed in the polymer matrix (104) at a predefined concentration to form conductive percolation pathways, wherein swelling of fibrous structures modifies separation distance between adjacent copper nanoparticles (104) and electrical conductivity associated with the polymer matrix (104). A plurality of electrodes (108) is disposed in electrical contact with the sensing substrate (102) and connected to a monitoring system (110) for transmitting electrical signals generated upon exposure to perspiration-derived fluids."
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