Printable, Novel CNT Inks with V2V Technology

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1 Printable, Novel CNT Inks with V2V Technology William J. Hurley, Jr., PhD Chasm Technologies, Inc. Canton, MA June 23, 2010 New England Nanomanufacturing Summit 1

2 Outline CHASM Overview Alliance with SWeNT CNT Applications Development Center Collaboration on CNT Inks Limitations of Current CNT Inks New CNT Inks based on V2V Technology Uniqueness Preparation and Application Performance Testing Commercialization Status 2

3 Our mission is to help our clients commercialize new products through smart application of material science and process technology Founded March Located in Canton, MA. 9 Employees. 3

Our focus is nanomaterials and thin film coating and patterning Client B CNT composites Client F

& Internal NIL Process Dev Client M Client I Product Design Specialty optical films Client C Nanoclay

Supply Analysis Konarka Flexible plastic PVs Client A CNT films MicroContinuum R2R Micro-patterning

4 Our focus is nanomaterials and thin film coating and patterning Client B CNT composites Client F Pharma MCT R2R coating Vanguard Solar Solar PV Client H Conductive films Client L Scale-up Demo Client & Internal NIL Process Dev Client M Client I Product Design Specialty optical films Client C Nanoclay composites QD Vision QD LED displays Nano- scale Materials Thin Film Coating & Patterning Client D Mfg Supply Analysis Konarka Flexible plastic PVs Client A CNT films MicroContinuum R2R Micro-patterning Client J WW Apps Search CNT materials Client N Film Product Development Client E Barrier film supply analysis 4

5 Carbon Nanotubes Single-wall Single-wall $50 - $2,500/g Specialty Multi-wall $ $50/g 1-2 nm 7 nm Multi-wall Multi-wall $ $0.50/g nm June 23,

6 Business Model Tailor Tubes for Target Applications Single-wall SG65 SG76 CG100 CG200 & more Coatings Composites SMW Deliver Total Product Solutions Product Forms that are Easy and Safe to Use. Collaboration with Alliance Partners and Customers. 6

7 Current CNT Inks Issues for Printing Typical Application Methods: Spin coat, spray coat, Ink jet Low productivity / EHS issues / Subtractive patterning Typical Ink Formulations: Non-volatile surfactants or processing aids If not removed Compromise CNT film performance If removed Adds process complexity / cost Low viscosity Incompatible with many industrial printing processes Low CNT concentration Multiple passes required 7

8 V2V Ink Technology* CNT Ink * Patents pending. 50 ~ 5,000 cp ~ 1 g/l, Solvent based CNTs printed using Standard Industrial Printing Equipment 8

9 V2V Ink Technology Better Chemistry Features 100% Volatile carrier fluid No deleterious surfactants No disperse aids required 100% CNT Coating Formulation can modified to be compatible with substrate chemistry No secondary processes necessary to remove residual materials Works with a wide range of CNT tube types Single Wall Specialty Multi-Wall Multi-Wall High CNT Concentration (at least 1 g/l) 9

10 V2V Ink Technology Better Processing Features No special drying techniques/equipment needed: Low processing temperatures Can be as low as 85 C Rapid drying can be < 1 min. Viscosity can be tailored for coating application: 50 5,000 cp Screen, Wire Rod, Flexographic, Gravure Compatible with a variety of substrates: PET/Mylar, Polycarbonate, PVOH, EA, Cellulose, etc. Demonstrated print resolution of 0.3 mm 10

11 Viscosity Differences 1 ml of V2V Ink vs. Aqueous Ink Tilting shows V2V Ink Resists Flow Same CNT concentration (1 g/l) 11

12 Simple Coating-Drying Oven or IR Heat >85 C for 1 min Screen and Meyer rod printing demonstrated. Gravure, Flexo are next. Heating evaporates fugitive viscosity modifier and ink vehicle. Essentially 100% of the dried coating is CNT! 12

13 Successful Screen Printing* * Courtesy of SWeNT Customer 13

14 Actual Devices Printed 25 mm SEM Image Showing CNT Network 14

15 Ohms/square 4-point probe Performance of SWeNT SG76 Ink Based on V2V Technology 8000 Resistivity vs %T of SG76 CNT in V2V TM Technology Ink* %T at 780 nm * Patents Pending All Coatings were made in 1-Pass with different Meyer Rods and using a commercially available SWCNT from SWeNT. 15

16 CNT Ink Applications Touch screens ESD Coatings Solar Cells Sensors Paper Lighting Paper Batteries ITO-film substitutes SMART Fabrics Flexible Circuits V2V Technology Not Limited to CNT - Other Nanomaterials Could Be Used 16

17 Commercialization V2V Ink Technology* 20 cc Syringe R2R Coating 1 liter Bottles Screen Printing * Patents pending 17

Printing versus coating technology Which way Printed Electronics with solution coating will go?

Printing versus coating technology Which way Printed Electronics with solution coating will go? Frank Schäfer, Andrea Glawe, Dr. Daniel Eggerath, KROENERT GmbH& Co KG, Schuetzenstrasse 105, 22761 Hamburg