No blood, only tears and sweat

A wear­able sen­sor that can check glu­cose lev­els from any body fluid con­tain­ing salt

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Sci­en­tists cre­ate a cop­per-based sen­sor that can gauge glu­cose lev­els from any body fluid that con­tains salt

PAINFUL BLOOD ex­trac­tion to test sugar lev­els could soon be a thing of past. Sci­en­tists have cre­ated a cop­per-based sen­sor that can gauge glu­cose lev­els from any body fluid that con­tains salt, for in­stance sweat and tears. Cop­per has been ex­haus­tively stud­ied for the pur­pose be­cause it is highly con­duc­tive and in­ex­pen­sive. But it also has a non-por­ous struc­ture. This prob­lem was over­come by mix­ing a liq­uid so­lu­tion of cop­per with poly­styrene (a poly­mer made from the monomer styrene that can be solid or foamed) to cre­ate small poly­styrene balls with cop­per at­tached to the out­side. The balls were then at­tached to a sub­strate through a process sim­i­lar to elec­tro­plat­ing and ul­tra­vi­o­let light was passed through the balls to make them into a wear­able, por­ous film with holes 10,000 times smaller than the hu­man hair. The film can be com­bined with smart watches to pro­vide con­tin­u­ous glu­cose read­ing of the wearer. Ange­wandte Chemie, Oc­to­ber 4

UOW AUS­TRALIA

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