A vision on smart textiles: SYSTEX

Smart Textiles meet Organic Electronics

Commercialization Cluster of Organic and Large Area Electronics

Smart Textiles meet Organic Electronics

Programme 9.00 9.15 10.30 10.45 11.00 12.00 13.15 14.45 15.00 16.30

Registration “Introduciton to smart textiles” (Carla Hertleer, UGent,B) “TriTex e-learning course” (Cédric Cochrane, ENSAIT, F) Coffee Break “Stretchable electronics for smart textiles” (Jan Vanfleteren, CMST, Imec,B) Sandwich lunch “Conjugated polymers: Versatile conductorsd and semi-conductors for electronic applications” (Dirk Vanderzande, Uhasselt, Imec, B) Coffee break Discussion round Closing

Smart Textiles meet Organic Electronics

Why smart textiles?

Smart Textiles meet Organic Electronics

A wearable smart textile system comprises • Sensors • Actuators • Data processing unit • Communication system • Energy supply • Interconnections

Smart Textiles meet Organic Electronics

Smart textiles

Embedded electronics Wearable electronics

Interactive clothing

Intelligent textiles

e-textiles

SFIT Smart Fabrics Interactive Textiles

Smart suit

Wearable textile systems Smart Textiles meet Organic Electronics

A combination of materials and processes Materials

Processes

Conductive

Spinning

Optical

Weaving

Chromic

Knitting

Shape memory

Embroidery

Piezo

Laminating

Phase change

Others

Smart Textiles meet Organic Electronics

Functional materials

Smart Textiles meet Organic Electronics

Smart use of passive materials

Smart Textiles meet Organic Electronics

Conductive materials • carbon, metal, polymers • conductive, semiconductive, dielectric properties

Kevlar coated with

Smart Textiles meet Organic Electronics

polypyrrol

copper

gold

Deposition of polypyrrole

Smart Textiles meet Organic Electronics

Electroless deposition of copper

Smart Textiles meet Organic Electronics

Deposition of gold: exchange with copper

Smart Textiles meet Organic Electronics

Adding conductive nanoparticles • Conductivity • Conductivity that changes with fibre expansion: • •

Deformation Swelling

Smart Textiles meet Organic Electronics

Obtaining elastic conductivity

Yarn level Fabric level: Knitting, special weaving Stretchable electronics Smart Textiles meet Organic Electronics

Smart yarns: elastic, conductive (A. Schwarz)

Smart Textiles meet Organic Electronics

Hollow spindle process

Smart Textiles meet Organic Electronics

Printing with conductive inks on textiles (I. Kazani) • • • • • •

Digital or screen Homogeneity Accuracy of paths Washing Deformation Adhesion

Smart Textiles meet Organic Electronics

Conductive inks on textiles

Smart Textiles meet Organic Electronics

Decline due to washing

Smart Textiles meet Organic Electronics

Connections

Antenna

Power supply Heating

Smart Textiles meet Organic Electronics

Incompatibility of materials 30 from experiment

(R-Ro)/Ro

25

from change in dimension

20 15 10 5 0 0

ε=0

0.2

0.4

PU with copper coating ε=6.0 % Smart Textiles meet Organic Electronics

0.6

strain

knitted fabric with stainless steel yarns

Sensors

Smart Textiles meet Organic Electronics

Body

Environment

Textile itself

biopotential

temperature

temperature

temperature

movements

wetness

respiration

biological

stretch

movements

chemical

wear

position

EM/ES fields

abrasion

sweat

water/moisture

odour

radiation

electrical

position

chemical

pressure

biological

sound

pressure acoustic skin properties

Smart Textiles meet Organic Electronics

Knitted electroconductive yarns as sensor

Textrodes Smart Textiles meet Organic Electronics

Respibelt

Woven pressure sensor, capacity based

Smart Textiles meet Organic Electronics

Complex textile structures can add functionality

Smart Textiles meet Organic Electronics

Smart fabrics: knitting • Electrodes for electrostimulation • Connection electrodescontacts • Textile compatible contacts Smart Textiles meet Organic Electronics

Contactless sensor EMG

Smart Textiles meet Organic Electronics

Electrode electrostimulation

Textrodes

Actuators

Smart Textiles meet Organic Electronics

Actuators Mechanical shape memory materials, pH- and thermo-responsive polymers, electro-active polymers Chemical micro/nano capsules, cyclodextrines, gel based systems Thermal phase change materials, electroconductive fibres, Peltier textiles Optical electrochromic materials, (in)organic LED (OLED) Acoustic piezo electric materials Electrical electrostimulation

Smart Textiles meet Organic Electronics

OLED

Textile structure Organic materials Image quality Yield still low Oxidation

Smart Textiles meet Organic Electronics

TITV

Energy supply

Smart Textiles meet Organic Electronics

Energy classification Generation: ‣ ‣ ‣ ‣ ‣ ‣

Thermal: Seebeck textiles, Peltier elements, Kinetic: piezo electric fibres, Radiation: photovoltaic fibres, Magnetic, Chemical: batteries, Fuel cells.

Storage: electrochemical (flexible batteries), electrical (super capacitor fibres) Smart Textiles meet Organic Electronics

A flexible battery

Smart Textiles meet Organic Electronics

Flexible photovaltaics in garments

Smart Textiles meet Organic Electronics

Photovoltaics: Dephotex Organic photovoltaics Nanostructures Dyestuffs Challenges: •Materials •Production •Stability •Concept Smart Textiles meet Organic Electronics

Transparent layer/ Electrode N semiconductor

+-

++-

P semiconductor Electrode

Energy from motion: piezo electrics Deformation leads to E field Needs large surface, no thickness PVDF Challenges: •Materials •Concepts •Production (poling) Electrode Piezo electric layer Electrode

Smart Textiles meet Organic Electronics

Energy from heat: Seebeck effect Materials: •P semiconductor •N semiconductor •Conductive materials

Infineon demonstrator

Smart Textiles meet Organic Electronics

Areas of cooling

Areas of heating

Communication

Smart Textiles meet Organic Electronics

Communication Wired-wireless Short-long distance Visual-Auditive-Tactile

Smart Textiles meet Organic Electronics

A selection of the prototypes for integration Into clothing

Into protective clothing

Smart Textiles meet Organic Electronics

Data processing

Smart Textiles meet Organic Electronics

Electronics are required -

rigid PCBs flexible PCBs stretchable PCBs textile electronics

Smart Textiles meet Organic Electronics

MICAS van KULeuven

CSEM voor Proetex

Smart Textiles meet Organic Electronics

Fraunhofer, Berlin

Textile electronics through weaving (Sefar)

Smart Textiles meet Organic Electronics

Fibre transistor (L. Rambausek)

Source

Semiconductor Insulator Gate

Drain

Conductive core: gate Insulating coating Semiconductor coating Electrode: source Electrode: drain

OFET: organic field effect transistor Smart Textiles meet Organic Electronics

Fibre OFET production • Dip coating • thin layer • controlled crystallinity • homogeneous coating

• Vapour deposition • Controlled distance of electrodes

Smart Textiles meet Organic Electronics

OFET stability • Characteristics change • Pressure • Bending

Sensor

• Oxydation of semi conductor

Smart Textiles meet Organic Electronics

OFET textile integration Weaving structure Right patterns Right contacts No falso contacts Stable contacts

Smart Textiles meet Organic Electronics

100µm

Interconnections

Smart Textiles meet Organic Electronics

Embroidery

Smart Textiles meet Organic Electronics

Contacts (T. Linz)

Smart Textiles meet Organic Electronics

Standardisation of smart textiles TC 248 WG 31 definitions and framework of regulations Standards electronics: • no deformation, moisture, temperature • manipulation of materials (clamping, deformation, …) Textiles: no electronics

Smart Textiles meet Organic Electronics

Conclusions • Enormous possibilities • Choice of materials, concepts, structures, production technologies • Application oriented

Smart Textiles meet Organic Electronics