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Precision density and viscosity measurement using two cantilevers with different widths

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dc.contributor.coauthorKılınç, Necmettin
dc.contributor.coauthorYaralıoğlu, G. G.
dc.contributor.departmentDepartment of Electrical and Electronics Engineering
dc.contributor.departmentDepartment of Mechanical Engineering
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorÇakmak, Onur
dc.contributor.kuauthorErmek, Erhan
dc.contributor.kuauthorÜrey, Hakan
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-10T00:03:00Z
dc.date.issued2015
dc.description.abstractWeintroduceanovelmethodforfastmeasurementofliquidviscosityanddensityusingtwocantilevers withdifferentgeometries.Ourmethodcanbeusedforreal-timemonitoringinlabonchipsystemsand offerhighaccuracyforalargerangeofdensitiesandviscosities.Themeasurementprincipleisbasedon trackingtheoscillationfrequenciesoftwocantileverswithaphase-lockedloop(PLL)andcomparingwith referencemeasurementswithaknownfluid.Asetofequationsandasimplealgorithmisdevelopedto relatethedensityandtheviscositytothefrequencyshiftsofthecantilevers.Wefoundthattheeffectof thedensityandtheviscositycanbewellseparatedifcantilevershavedifferentwidths.Intheexperiments, twoNickelmicrocantilevers(widths25 mand100 m,length:200 m,thickness:1.75 m)werefully immersedintheliquidandthetemperaturewascontrolled.TheactuationwasusinganexternalelectrocoilandtheoscillationsweremonitoredusinglaserDopplervibrometer.Thus,electricalconnectionsto thecantileversarenotrequired,enablingmeasurementsalsoinconductiveliquids.ThePLLisusedto setthephasedifferenceto90◦betweentheactuatorandthesensor.Calibrationmeasurementswere performedusingglycerolandethyleneglycolsolutionswithknowndensitiesandviscosities.Themeasurementerrorwiththenewmethodwaslowerthan3%indensityintherange995–1150kg/m3and 4.6%inviscosityintherange0.935–4mPa.s.Basedonthesignal-to-noiseratio,theminimumdetectable differenceintheviscosityis1 Pa.sandthedensityis0.18kg/m3.Furtherimprovementsintherange andtheaccuracyarepossibleusing3ormorecantileverswithdifferentgeometries.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.openaccessNO
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.volume232
dc.identifier.doi10.1016/j.sna.2015.05.024
dc.identifier.issn0924-4247
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-84931259629
dc.identifier.urihttps://doi.org/10.1016/j.sna.2015.05.024
dc.identifier.urihttps://hdl.handle.net/20.500.14288/16249
dc.identifier.wos361408000016
dc.language.isoeng
dc.relation.ispartofSensors and Actuators A-Physical
dc.subjectEngineering
dc.subjectElectrical electronic engineering
dc.subjectInstruments
dc.subjectInstrumentation
dc.titlePrecision density and viscosity measurement using two cantilevers with different widths
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorÇakmak, Onur
local.contributor.kuauthorErmek, Erhan
local.contributor.kuauthorÜrey, Hakan
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Sciences
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Mechanical Engineering
local.publication.orgunit2Department of Electrical and Electronics Engineering
local.publication.orgunit2Graduate School of Sciences and Engineering
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