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ID:39450844
大小:244.54 KB
页数:5页
时间:2019-07-03
《wireless gas sensor using CNT_PMMA thin film chemiresistor》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、INSTITUTEOFPHYSICSPUBLISHINGSMARTMATERIALSANDSTRUCTURESSmartMater.Struct.13(2004)10451049PII:S0964-1726(04)82882-9Acompactwirelessgassensorusingacarbonnanotube/PMMAthinfilmchemiresistorJoseKAbraham1,BijuPhilip1,AshwinWitchurch1,VijayKVaradan1andCChannaReddy21CenterforEngineeringofEle
2、ctronicsandAcousticsMaterialsandDevices,PennsylvaniaStateUniversity,UniversityPark,PA16802,USA2TheHuckInstituteofLifeSciences,PennsylvaniaStateUniversity,UniversityPark,PA16802,USAReceived16February2004,infinalform17June2004Published6August2004Onlineatstacks.iop.org/SMS/13/1045doi:10
3、.1088/0964-1726/13/5/010AbstractThedesignanddevelopmentofacompactwirelessgassensorwithasurfacemodifiedmultiwalledcarbonnanotube(f-CNT)chemiresistorasthesensingelementispresentedinthispaper.f-CNT/polymercompositesensingfilmispatternedonaprintedcircuitboardandisintegratedtothewirelesssy
4、stem.ThechangeinresistanceoftheCNT/polymercompositefilmduetoexposureofdifferentgasesisutilizedastheprincipleofthisgassensor.Theresponsefordifferentorganicvaporsareevaluatedanditisobservedthatthef-CNT/PMMAcompositefilmshowsfastresponseandchangeinresistanceoftheorderof102103duetoitssurf
5、acemodification.(Somefiguresinthisarticleareincolouronlyintheelectronicversion)1.Introductionandmechanicalproperties.ThesepropertiesmakethempotentialcandidatesforbuildingblocksofactivematerialsAdvancementsinmicrotechnologyandtheevolutionofnewinnanoelectronics,fieldemissiondevices,gasst
6、orageandnanomaterialsanddeviceshavebeenplayingakeyrolegassensors[13].Amongthese,theroomtemperaturegasinthedevelopmentofveryaccurateandreliablesensors.sensingpropertyisveryattractiveformanyapplications[4,5].ThetechnologyofmicrosensorshasdevelopedtremendouslyThelargesurfaceareaprovide
7、dbythehollowcoresandinthelastdecadebyjoiningmanyscientificachievementsoutsidewallsinnanotubesgivesthemverylargegasabsorptivefromvariousdisciplines,offeringnewerchallengesandcapacity.Interactionwithanygascanchangetheelectricalopportunities.Thequestforeversmallerdevicescapablepropertie
8、sofCNTsatroomtemper
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