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VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD BET-EU Functional Materials Integration into Devices and Systems Meeting 5.-6.9.2016 VTT, presented by Maria Smolander Agenda Motivation and application opportunities for printed and hybrid functional solutions Facilities Examples Printed transistors Hybrid solution on paper (Case ROPAS) Paper based diagnostic platform (e.g. Case Cyanodec) Printed biobattery (Case Cosmetic patch) 02/02/2017 2 Motivation for R2R Printed & Hybrid Functionalities Form factor & new functionality Flexibility Wide area New functions to products Basis for novel products Cost effective production Low material use (per unit) High volume, rapid production Starting largely from niche applications, a basis for disruptive innovations 02/02/2017 3 Application areas for wearable, stretchable and disposable electronics and diagnostics Skincare Sports & Well-being Elderly care Smart packaging 02/02/2017 Environmental diagnostics 4 Application areas for printed and hybrid functionalities on large-area surfaces Painted walls Media surfaces Textiles Furnitures Floors 02/02/2017 Windows 5 World class research facility Concept development in Lab-scale Ink jet printing environment Chemical and biochemical laboratory facilities Upscaling in pilot factory Laboratory scale printing (flexo, screen,reverse offset, gravure) Measurement & charaterisation Best Technical Development Manufacturing Award 2012 Berlin, 2012 Santa Clara, 2013 Berlin, 2013 Tokyo MAXI – In-air roll-to-roll pilot line Proof-of-concept NICO – inert roll-to-roll pilot line PICO – in-air roll-to-roll pilot line TESLA – functional testing ROKO – in-air roll-to-roll pilot line ENGEL - Injection moulding EVO - R2R assembly and bonding Proof-of-manufacturability 6 Examples of printed electronic systems Printed OLEDs: signage and displays, over-moulded OLED, … Organic photovoltaics: electrical balance, people amount counter, presence sensor, energy harvesting tree, dollhouse, overmoulded OPV, … 02/02/2017 Replication: R2R imprinted diffractive optics, microfluidics, back-/front light, light redirection, … Printed organic transistors 7 Examples of printed and hybrid solutions Printed fluidic channels on paper, Paper-based test for consumers to detect e.g. toxic cyanobacteria Intelligent packaging: Visible labels for package integrity and anti-tampering, Direct digital marking of consumer products, Package integrated smart phone readable sensor for food product quality 02/02/2017 Intelligent swimming paddle (Trainesense), Flexible wireless platform for wearable applications, Communicating envelope for insured letters with embedded electronics on paper, Printed sensor arrays Printed biobattery improving effect of cosmetics, cardboard integrated device for iontophoretic skin 8 treatment VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD Printed transistors Organic materials, metal oxides Ari Alastalo, Henrik Sandberg et al. Printed transistors VTT is developing printed TFTs based on organic materials, oxides and CNTs. Organic materials have reached highest maturity and have been demonstrated on R2R Oxide materials have the highest performance but need special curing techniques for low-temperature annealing Applications targeted include sensor arrays, sensor tags and logic of functional cards. 02/02/2017 10 Organic materials – sheet process Ring oscillator Ring oscillator output Printed sensor and switching transistor arrays on flexible substrate* Logic circuits • • • T. Hassinen et al., “Printed polymer and carbon nanotube thin film transistors with high-k barium titanate insulator”, Japanese Journal of Applied Physics 53 (2014) T. Hassinen et al., “Gravure printed low voltage polymer transistors and inverters”, Thin Solid Films 548 (2013) 585–589 * Vuokko Lantz, Henrik Sandberg, “Flexible sensor technologies for new device platforms”, LOPEC 2015 conference. 02/02/2017 11 Organic materials – R2R process 1 - selfalignment for bottom gate Metal gate electrode and wiring: Resist printing (MAXI, flexo) + Ag Evaporation (EVA) + Lift-off (ROKO): Gate width 20 m Organic dielectric printing: 1st and 2nd layer (ROKO, reverse gravure) Metal source & drain electrode formation: Resist printing (ROKO, flexo) + Backside exposure (ROKO) + Development (ROKO) + Resist printing (MAXI, flexo) + Evaporation (EVA) + Lift-off (ROKO) Organic semiconductor printing: 1st and 2nd layer (ROKO, reverse gravure) + lamination (ROKO) • 02/02/2017 • Vilkman, M., Ruotsalainen, T., Solehmainen, K., Jansson, E., Hiitola-Keinänen, J., “Self-Aligned Metal Electrodes in Fully Roll-to-Roll Processed Organic Transistors”, Electronics (Printed Electronics special issue), 5(1) (2016) 2, DOI: 10.3390/electronics5010002. S. Jussila et al., ” Self-aligned patterning method of poly(aniline) for organic field-effect transistor gate electrode, Organic Electronics 13 (2012) 1308 – 1314 12 Organic materials – R2R process 2 - Low number of processing steps for top gate Metal source & drain electrode: Ag Evaporation (EVA) or readily metallized substrate Gel etch printing (MAXI/ROKO, screen / gravure) TFT channel width 100 m (30 µm lab process) Organic semiconductor and dielectric direct printing: 1) Semiconductor solution (MAXI, gravure) 2) Dielectric solution (MAXI, gravure) Metal Gate electrode formation: Direct printing of metal particulate ink • Ag (MAXI, screen/flexo) • InkJet printing Optionally: Printed organic gate or metal shadow mask evaporation • 02/02/2017 M. Vilkman et al., ”Fully roll-to-roll processed organic top gate transistors using a printable etchant for bottom electrode patterning” Organic electronics, Volume 20, May 2015, Pages 8–14 13 Oxide materials – sheet process with UV • Indium nitrate (In(NO3)3 xH2O, 99.9%) and Zn nitrate precursor in 2-methoxyethanol (2-ME, 99.8%) solvent Si, glass or PI substrate Bottom-gate-top-contact TFT structure Evaporation of Al gate electrodes using a shadow metal mask (glass / PI). ALD growth at 300 °C of 90 nm of Al2O3 insulator to serve as the gate dielectric. Spin coating or flexo / inkjet printing of the nitrate precursor. Annealing of the semiconductor at 300 °C for 30 min or at 200 °C for 15 min with FUV on a hotplate. Evaporation of the Al source and drain electrodes using a metal shadow mask for 50 m channel length. Post annealing of the devices at 150 °C for 30 min on a hotplate. • • • • • • • • • • • • • • • • • Star map shown at LOPE-C 2014 on-off circuit and LED driver on glass 3 discrete LEDs Enfucell flexible battery See video J. Leppäniemi et al., “Rapid low-temperature processing of metal-oxide thin film transistors with combined far ultraviolet and thermal annealing”, Applied Physics Letters 105 (2014) 113514 H. Majumdar et al., “Low temperature processing of printable metal oxide thin film transistors”, Proc. ESTC2014, Sept. 16-18, 2014, Helsinki, Finland. A. Alastalo et al., “Modelling of Printable Metal-Oxide TFTs for Circuit Simulation”, Proc. ESTC2014, Sept. 16-18, 2014, Helsinki, Finland. http://youtu.be/yNpF_brcOj4 02/02/2017 14 Flexography-printed In2O3 TFTs on PI plastic Electronic properties of In2O3 TFTs annealed at 300 °C: Optimized process gives µsat = 8 cm2/(Vs) on average and Von ~ 0 V High-performance oxide devices with flexographic printing on plastic NC-In2O3 • “Flexography-Printed In2O3 Semiconductor Layers for High-Mobility Thin-Film Transistors on Flexible Plastic Substrate”, J. Leppäniemi et al Advanced Materials, 2015, 27, 7168–7175 http://dx.doi.org/10.1002/adma.201502569 02/02/2017 15 VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD Case ROPAS: Hybrid solution on paper Henrik Sandberg, Liisa Hakola, Elina Jansson, Arttu Huttunen, Maria Smolander ROPAS demonstrators Target on logistics Security tag Smart label Smart Envelop Shipping of valuable goods Shipping of precious goods Registered post Open/close detection Humidity and temperature sensor 4th March 2015 Track and trace Password control A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 17 17 Demonstrators • Security Tag • Chip integration • NFC integration • Printed sensors Complexity of printing • Smart label Complexity of electronics • Components placing Complexity of demonstrators • Conductive tracks • Smart envelope • Smaller print features • Antenna integration • ICT (Security / password) 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 18 18 Process up-scaling Three main technologies Conductive tracks and dielectrics Printing Screen, FLEXO, Inkjet Hot foil transfer Postprocessing Thermal, UV, IR, Flash sintering Integration Heterogeneous & monolithic Encapsulation / packaging Lamination, overcoat, inlay 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 19 19 VTT: MAXI & ROKO PRINTING Camera for registrati on Anilox Plate Dielectric (MAXI) Paper Circuit (MAXI) Antenna & bridges (ROKO) 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 20 20 Integration of components Direct printing of resistors (~4 k ) Reel-to-reel pick'n'place process in “stop-and-go“ mode 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 21 21 Security Tag 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 22 22 Smart envelope – track and trace Wireless communication Electronic layout Envelope Design Antenna performance 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) Web access and security 23 23 23 MATERIALS & METHODS • R2R printing of circuit, dielectric, and antenna layers – Registration to circuit layer – All the layer have different register marks • Visual marks and marks for automatic system CIRCUIT – RED 2xINSULATOR – DARK GREEN & CYAN ANTENNA - GREEN 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 24 24 BRIDGE PRINTING • Bridges were conductive – 0.26 ± 0.01 distance) (8 mm • No shorts (yield 100 %) were detected 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 25 25 ANTENNA PRINTING • Antenna structure was nicely reproduced • Low square resistance value was obtained, < 9 Ohm • Layer is rather rough and uneven Ink Thickness (µm) Ra (nm) Antenna 18.1 ± 2.8 3020 ± 520 4th March 2015 Rq (nm) Spreading (µm) Square resistance (m ) Volume resistivity ·cm) 3710 ± 660 50 14.8 2.7E-05 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 26 26 Component placing • Pick’n’place process at VTT (Oulu site) – – – – 23 basic two terminal packages 1 oscillator 1 chip Flex integration: • Battery (enfucell) • Antenna (if separately printed) • Main challenges – Number of components e.g. ST adhesive is slow – Types of components need for different types of adhesives 4th March 2015 A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 27 27 Smart Envelope Printed paper antenna communication >300m Logic LED Battery powered Patent application: EP 13176531.5 4th March 2015 Keyboard A3PLE conference LOPE-C (ROPAS | VTT, Sandberg) 28 28 VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD Printed paper based diagnostics Maria Smolander, Liisa Hakola, Tuija Teerinen, Kaisa Kiri Printed visual indicators and diagnostic tests Sensors that give indication on the state of an item or analyte concentration by visual colour change or appearance Printing methods for cost-efficiency, high throughout and integration into products VTT expertise in development of inks and materials (e.g. enzymes), optimisation of manufacturing process and up-scaling from laboratory to pilot scale Demonstration of food quality, health & well-being and environmental indicators 02/02/2017 30 Paper-based diagnostics Simple design and low-cost Portable, flexible, disposable and bio-compatible High throughput in manufacturing can be achieved Reproducible with high sensitivity and accuracy No need for professional medical personnel or complicated instruments 02/02/2017 Potential for integration of high-density detection systems into a small device Reference: Andres W. Martinez, Scott T. Phillips, and George M. Whitesides. Diagnostics for the Developing World: Microfluidic PaperBased Analytical Devices. Anal. Chem. vol. 82 (2010) p. 3–10. 31 Flexographically printed paper microfluidics Fluidic structures formed into chromatography paper (a) and clean room paper (c) by flexographic printing 5 w% polystyrene in xylene. 02/02/2017 Flexographically printed fluidic structures in paper. Olkkonen J, Lehtinen K, Erho T. Anal Chem. 2010 Dec 15;82(24):10246-50. 32 Printed and coated biomolecules on fibre based products Bioactive functionalities (such as enzymes or antibodies) deposited into fiber based structures Cost effective manufacturing by printing and coating incorporated in different paper coatings microencapsulated and screen printed flexo printed ink jet printed as distinct pattern Heini Virtanen, Hannes Orelma, Tomi Erho, Maria Smolander, Process Biochemistry, Vol 47 (2012) 1496 – 1502. Savolainen, Anne; Zhang, Yufen; Rochefort, Dominic; Holopainen, Ulla; Erho, Tomi; Virtanen, Jouko; Smolander, Maria; Biomacromolecules, 12 (2011) 2008-2015. Matilainen, K, Hämäläinen, T, Savolainen, A, Sipiläinen-Malm, T, Peltonen, J, Erho, T, Smolander, M. 2012. Colloids and Surfaces B: Biointerfaces, 90:1, 119-128 Cellulose as a novel substrate for lateral flow assay Lappalainen, T., Teerinen, T., Vento, P., Hakalahti, L., Erho, T. 2010 Nordic Pulp and Paper Research Journal 25 (4) , pp. 536-550 02/02/2017 33 Glucose test demonstrator Tesorb paper substrate (80 g/m2, Tervakoski) Four layers printed: 1. Flexography printed polystyrene (5 wt-%) layer for liquid guiding, both sides of paper 2. Flexography printed PEI (polyethylene imine, 5 wt-%) layer for pH modification 3. Inkjet printed pH ink (2 wt-%) layer for visual colour change 4. Inkjet printed enzyme ink (glucose oxidase 5 mg/ml) for reaction with glucose Four demonstrators: different combinations of lab and pilot scale inkjet and flexography Print layout for inkjet Print layout for flexography 02/02/2017 Pilot scale MAXI line for layer 1 (15 cm3/m2 & 25 cm3/m2) Laboratory scale printer for layers 1 & 2 (18 cm3/m2) Laboratory scale printer (DMP, 10 pl, 1270 dpi) for layers 3 & 4 Industrial printheads (SE-128, 30 pl, 600 dpi) for layers 3 & 4 34 Principle of glucose test 1. Analyte (glucose) pipetted 2. Liquid flow in channels to reaction spots containing pH dye and enzyme Pink area = channel boundaries White areas = liquid channels 3. Colour change from red to yellow due to analyte triggegred enzyme reaction causing pH change 02/02/2017 35 Onsite Detection of Cyanobacteria Toxins Value proposition: Inexpensive and simple-to-use test kit for detection of cyanobacterial toxins in water Based on mass-manufacturing methods for cost-effectiveness and disposability Competitive edge: Paper or polymer based immunoassay test specific for toxin producing cyanobacteria (microcystin, nodularin) Offering: Test kit for cyanobacteria toxins with market potential defined Outcome: Accurate results in short time , onsite testing, user friendly, cost effective R&D infrastructure: Printing technology, laboratory and pilot scale equipment, upscale manufacturing process Process: Manufacturing process Channel printing Addition of cell lysis reagents Inkjet printing/dosing of Au-conjugate & antibodies Sealing=Test strip Covering Sealing=Test strip Graphics printing Integration = test Production of antibodies Sample treatment, including external cell lysis (if needed) Instruction of use 02/02/2017 Packaging = Test kit 36 Prototype for Cyanobacter test https://www.youtube.com/watch?v=WhgwaOS_-ek 02/02/2017 37 VTT TECHNICAL RESEARCH CENTRE OF FINLAND LTD Printed biofuel cell Saara Tuurala & Maria Smolander Operating Principle of Biofuel Cell Chemical energy of organic substrate (e.g. sugar or alcohol) is transformed into electricity via biocatalysis (by enzymes or living cells) The use of enzymes as catalysts for the power source enables: operation in mild conditions use of renewable chemicals as fuel disposability e- Oxidized substrate eAnode enzyme Cathode enzyme h+ H2O Substrate Anode (e.g. sugar or alcohol) VTT’s printed biofuel cell – biobattery – uses glucose and air as fuel The biobattery produces µ-power; typically 1 µA/cm2 at 0.5 V O2 (air) Membrane Cathode Current collectors Cathode shell Cathode Separator membrane Anode Anode shell 02/02/2017 39 Development Path of biobattery / microcurrent patch Half enzymatic, printed power source Fully enzymatic, printed power source 2009 2005 Development of a printable laccase-based biocathode for fuel cell applications, M. Smolander et al., Enzyme and Microbial Technology 43(2) (2008) 93-102 Characterization and Stability Study of Immobilized PQQDependent Aldose Dehydrogenase Bioanodes, S. Tuurala et al., Electroanalysis 24(2) (2012) 229-238 02/02/2017 Cosmetic patch in industrial sheet-to-sheet process A mediated glucose/oxygen enzymatic fuel cell based on printed carbon inks containing aldose dehydrogenase and laccase as anode and cathode, P. Jenkins et al., Enzyme and Microbial Technology 50(3) (2012) 181-187 A comparison of glucose oxidase and aldose dehydrogenase as mediated anodes in printed, glucose/oxygen enzymatic fuel cells using ABTS/laccase cathodes, P. Jenkins et al., Bioelectrochemistry 87 (2012) 172-177 2012 2014 Production of bioactive electrode layers in R2R pilot scale Scale-up of manufacturing of printed enzyme electrodes for enzymatic power source applications, S. Tuurala et al., Journal of Applied Electrochemistry 44(7) (2014) 881-892 Increasing performance and stability of massmanufacturable biobatteries by ink modification, S. Tuurala et al., Sensing and BioSensing Research 4 (2015) 61-69 Increasing the Operational Lifetime of a Printed Enzymatic Power Source using Superabsorbent Polymers as the Anode Support, S. Tuurala et al., Energy Technology, online on September 2015 IPR US2009280408A US2013017457A WO2011073519 WO15092153A1 FI20155619 40 Application of the biofuel cell in microcurrent skin patch Biofuel cell based microcurrent patch facilitates the delivery of cosmetic substances efficiently into the skin VTTs microcurrent patch has following features: efficacy shown by in vitro skin microscopy - increases the metabolic activity and density of collagen fibers of the skin stability - can be stored in dry state even for years and is activated by moisture activation environmentally friendly - is based on renewable, enzymatic cathodic catalyst disposable - not interpretated as a battery according to the definition 02/02/2017 41 Roll-to-roll printed biocatalysts for electrochemical application Anodic & cathodic layers of printed, enzyme-based biobattery printed and dried in ROKO pilot scale printing line Scale-up of manufacturing of printed enzyme electrodes for enzymatic power source applications Saara Tuurala, Otto-Ville Kaukoniemi, Leo von Hertzen, Johanna Uotila, Anu Vaari, Mikael Bergelin, Pia Sjöberg, Jan-Erik Eriksson, Maria Smolander, accepted to J Appl Electrochem, DOI 10.1007/s10800-014-0702-2 02/02/2017 *ROKO pilot scale printing line 4 replaceable printing units Direct and reverse gravure, rotary screen, and flexography units Corona and lamination units Drying units (air, UV, IR) Web width 300 mm Max. web velocity 10 m/min 42 Environmentally friedly chemistry Unique environmentally friendly chemistry • cathodic catalysts is laccase enzyme • renewable, produced in biotechnical process • enables operation in mild conditions • enables disposability 02/02/2017 43 Overall conclusions Several printing and hybrid integration methods have been successfully used for embedding electronic, chemical and biological functionalities into R2R processed, flexible substrates including paper Value addition of R2R processes due to flexibility, possibility for large area, cost effective production enabling high volume and disposable products Main focus to be selected according to concept and application, materials and process need to meet the specs Pilot scale trials to demonstrate the proof-ofmanufacturability 02/02/2017 44 TECHNOLOGY FOR BUSINESS 45