Functional printing on paper subtrates

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  • Functionalprintingon papersubstrates

    MatijaMraovimatija.mraovic@icplj.si

  • Whatis? IntelligentpackagingMetapaper /FrequencySelectiveScreen

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    Interdisciplinaryapproach:

    Paperscience, Graphicalscience, Physics, Chemistry, Biology, Electronics, Management,

    Newdesigns,Newmaterials,Nanomaterials?

    Printedantennas,sensors

    Printeddisplays,indicators

    Intelligentpackaging

  • Includes: Internalandexternalsensing Monitoringofparametersvitalforthegoodsinside Parameterrecordingandstoringforlateranalysis(optimization) Shelflifecalculation Communication Protection(antitampering,anticounterfitting,damaged) Transportandstoragemonitoring Lifecyclemonitoring

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    Intelligent packaging

  • TRENDIRAZVOJA

    Barcode>>>>RFID

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    QRcode+mobilephone extrainfo webshopping,marketing

    Intelligentpackaging

  • PRINTEDELECTRONICS Flexiblematerials(paper,carton,foil) Functionalprintinginks Conventionalprinting(notsameperspective) Passiveelectroniccomponents(antennas,sensors) Activeelectroniccomponents(displays,ICs)

    Intelligentpackaging

  • prevod

    naTB

    Printedelectronics functionalinksConventionalprint(illusion)

    (CMYK)

    PRINTEDELECTRONICS

    Intelligentpackaging

  • PRINTEDHUMIDITYSENSORS Capacitivehumiditysensors Gassensormodification(functionalcoating) RFIDsensorplatform

    Intelligentpackaging

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    FABRICATEDWITHSCREENPRINTING Commercialconductiveink (polymerwith

    silvermicro/nanoparticles) Heatcuring Simpletofabricate Lowresolution Surfaceroughness Issuewithelectricalcontacts

    TWOSENSORTYPES Lateral(comb)typecapacitor A Flatplatecapacitor B

    SENSORDIMENSIONS 1X1CM(A,B) 2X2CM(A,B) 3X3CM(A,B) ARRAYSWITHALLDIMENSIONS

    OF BASETYPESENSORS.

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    1x1 cm

    2x2 cm

    3x3 cm

    3x3 cm array

    2x2 array 1x1 array

    Flat plate

    1x1 cm 2x2 cm

    Layout of the printing form

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    MAINGOALS: Designandfabricatecapacitivehumidity

    sensorsofdifferentgeometryandconfiguration.

    Testsensorsondifferentcellulosebasedsubstrates.

    Findtheoptimumdesign(electricallyandeconomically)forfuturework.

    TheultimategoalistofabricateaRFID enabledsystemwithscreenprinted sensorsforuseinsmartpackaging applications.

    Substrates and sensor labelingVimax (recycled paper) C1 (11 cm), C2 (22 cm), C3 (33 cm); comb typeMLiner (cardboard) K1 (11 cm), K2 (22 cm), K3 (33 cm); comb typePackPro (food packaging paper) V2 (22 cm); comb typePolycarbonate foil PC (22 cm); comb type

    ASSUMPTION:SENSORRESPONSEISAFUNCTIONOF SUBSTRATE.

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    TestinginthehumiditychamberattheFacultyofelectricalengineering,Ljubljana

    CONSTANTTEMPERATURE: T=23CRELATIVEHUMIDITYRANGE:35% 80%Rh

    MEASURINGQUANTITIES: CAPACITANCE[F] CONDUCTANCE[S]4MEASUREMENTSERIES:

    Fromlow(35%Rh)tohigh(80%Rh) 5%Rhstep,stepduration1hFromhightolow 5%Rhstep,stepduration1hCyclingtheRhfrom35% 80% 40%Rh 10%Rhstep,1hCyclingtheRhfrom80% 35% 70%Rh 10%Rhstep,1h Cantrackupto16sensorssimultaneouslywitharbitraryperiod(30s).

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    0.5

    1

    1.5

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    2.5

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    x 10-10

    Cap

    acita

    nce

    [F]

    Time response

    11:17 12:34 13:35 14:39 15:42 16:44 17:45 18:52 20:01 21:10 22:20

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    Time

    Rh

    [%]

    C1C2C3K1K2K3PCV2RhSetRh

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    TimeresponseplotDATAFROMCYCLINGMEASUREMENT(35% 80% 40%RH) LazyandlowerresponseatlowRh(80%

  • 30 35 40 45 50 55 60 65 70 75 800

    0.5

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    1.5

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    2.5

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    3.5x 10

    -10

    Rh [%]

    Cap

    acita

    nce

    [F]

    Capacitance vs Rh

    C1C2C3K1K2K3PC2V2

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    CvsRhplotDATAFROMCYCLINGMEASUREMENT(35% 80% 40%RH) Logarithmicresponsetype Hysteresis(evidentatRh>~60%Rh) highercapacitancewith

    moistsensor(from80%to40%Rh) lowercapacitancewithdrysensor(from35%to80%Rh)

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    Rh [%]

    SR

    [%]

    Relative sensitivity (SR)

    C1dryC1moistC2dryC2moistC3dryC3moistK1dryK1moistK2dryK2moistK3dryK3moistPC2dryPC2moistV2dryV2moistP2dryP2moist

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    Relativesensitivityplot:SR vsRhDATAFROMCYCLINGMEASUREMENT(35% 80% 40%RH) Allsensorsinthesameregionofsensitivity(alsoPCfoil) Moresensitivewhenmoist

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    Inconclusion: SENSORRESPONSEISNOTAFUNCTIONOFSUBSTRATE,IT'S

    AFUNCTIONOFCONDUCTIVEINK(POLYMER). LOGARITHMICRESPONSE. HYSTERESIS. REPEATABILITYISPOOR. CANBEUSEDFORSIMPLEAPPLICATIONSWHEREIT'SONLY

    IMPORTANTTODISTINGUISHBETWEENDRYANDWET. CHEAP(MASSPRODUCIBLE),EASILYFABRICATEDAND

    INTEGRATEDINTOPRODUCTS(EG.PACKAGING).

    PROBLEMS ENERGYSUPPLY ELECTRICALCONTACTS

  • METAPAPER/FREQUENCYSELECTIVESCREEN

    Thefrequencyselectivesurfaces(FSS)areperiodicstructuresineitheroneortwodimensionswhichperformafilteroperation.Dependingontheirconstruction,materialandgeometry,theyaredividedintolowpass,highpass,bandpassandbandstopfilters.

    173D 2D - printed

  • METAPAPER/FREQUENCYSELECTIVESCREEN

    APPLICATIONS Frequencysplitting Cassegrain reflectors Frequencyfiltering(reflecting) EMradiationprotection Wirelessdataprotection Antennapowerdirecting IRradiationreflecting

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  • METAPAPER/FREQUENCYSELECTIVESCREEN

    STRUCTURE(2D PRINTED) Periodicconductingpatterns(metacells) Dimensionsproportionaltowavelength Passiveantenna(reflector)analysisapproach

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  • METAPAPER/FREQUENCYSELECTIVESCREEN

    METACELL

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  • METAPAPER/FREQUENCYSELECTIVESCREEN

    MEASUREMENTRESULTS Screenprinting Agink Operation @3,0GHz

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  • METAPAPER/FREQUENCYSELECTIVESCREEN

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  • METAPAPER/FREQUENCYSELECTIVESCREEN

    IRreflector(~10micronprint?) Printedantennas(radar,WiFi;performance?) Cheapsolutions(maritime,cars)

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  • ALLACHIEVABLEBYPRINT!

    Intelligentpackaging/electroniccomponents Metapaper(fundamentalphysicalpropertyofpaperaltered)

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    ACKNOWLEDGEMENT:ThankstoVipap d.d.,forsupportingandfullyfinancingthemetapaperresearch.