Non-invasive wearable electrochemical sensors-a review

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1、ReviewNon-invasivewearableelectrochemicalsensors:areviewAmayJ.BandodkarandJosephWangDepartmentofNanoEngineering,UniversityofCalifornia,SanDiegoLaJolla,CA92093,USAWearablesensorshavegarneredconsiderablerecentinterestGlossaryowingtotheirtremendouspromiseforaple

2、th-oraofapplications.Yettheabsenceofreliablenon-Amperometricsensors:devicesthatmeasurethecurrentproducedduringtheinvasiveoxidationorreductionofanelectroactivespeciesataconstantappliedchemicalsensorshasgreatlyhinderedprogresspotential.Thiscurrentisproportional

3、totheconcentrationoftheelectroactiveintheareaofon-bodysensing.Electrochemicalsensorsproduct.offerconsiderablepromiseaswearablechemicalsen-Biocompatibility:isaconditionofbeingharmlesstolivingtissueoralivingsorssystembynotbeingtoxicorinjuriousandnotcausingimmun

4、ologicalthataresuitablefordiverseapplicationsowingtorejection.theirhighperformance,inherentminiaturization,andBiofouling:theaccumulationandgrowthofundesiredbiomaterialsonalowcost.Awiderangeofwearableelectrochemicalsurface.sensorsBiofluid:abiologicalfluid.Biof

5、luidscanbeexcreted(suchasurineorsweat),andbiosensorshasbeendevelopedforreal-timesecretednon-invasive(suchasbreastmilkorbile),obtainedwithaneedle(suchasbloodormonitoringofelectrolytesandmetabolitescerebrospinalfluid),ordevelopasaresultofapathologicalprocess(su

6、chasinsweat,tears,orsalivaasindicatorsofawearersblisterorcystfluid).healthBiofuelcell:isaspecifictypeoffuelcellthatusesenzymesasacatalysttostatus.Withcontinuedinnovationandattentionoxidizetoitsfuelandgenerateelectricity.keychallenges,suchnon-invasiveelectroch

7、emicalCariogenicpotential:theabilityofafoodtocausetoothdecay.Itisevaluatedsensorsandbiosensorsareexpectedtoopenupnewbymeasuringplaque-pHduringandfor30minutesafterconsumptionoftheexcitingfoodproduct.avenuesinthefieldofwearablewirelesssens-Conjuntiva:ingathinmem

8、branethatcoverstheinnersurfaceoftheeyelidandthedevicesandbody-sensornetworks,andthusfindwhitepartoftheeyeball.considerableElectrochemicaltransducers:devicesthatconvertchemicalinformationin