Cooling• Grado Zero F1 pilots• Prospie project: • Salts that cool when wetted • Ventilation in clothing • Phase change materialswww.prospie.eu
Self adapting insulation/ventilationBiomimetics: based onpine coneCoating reacting onhumidityG. JenonimidisUniversity of reading UK
Phase change materials•Developed by NASA in 90’s•Cope with large temperature variations•More than 500 substances•Uses melting heat: about 200 times higher thancaloric value•Paraffin waxes in micro capsules
Mechanical actuatorsMechanisms StatusThermal/hygral expansion Limited flexibilityShape memory materials One way, expensive, controlGel based systems Based on diffusion: slowElectro active polymers Slow, low voltageElectrostrictive systems Fast, high voltage
Shape memory alloys: Nitinol Goes to a predifined shape above transition temperature Grado Zero Self ironing shirt
Smart interface: active dyes Skin pH-variation after burn wound skin pH days L. Van der Schueren, K. De Clerck
Biochemical actuatorsMicro capsules Active gels Cyclodextrins
CommunicationWithin componentsBetween components in a suit ‣ Conductive fibres ‣ Optical fibresWith the wearer: • keyboard, • displayWide environment: • inductive, • antenna
EnergyOptimise consumption and distributionBalance between storage and “generation”Storage: • Flexible chemical batteries • Capacity based fibre batteriesGeneration from: • Heat • Motion • Light
Energy from heat: Seebeck Uses: Areas of cooling •P semiconductor •N semiconductor Areas of heating •Conductive materials Infineon demonstrator
Energy from motion: piezo electrics Deformation leads to E field Needs large surface, no thickness PVDF Challenges: •Materials •Concepts Electrode Piezo electric layer •Production (poling) Electrode
A smart textile can …Monitor man, the environment and itselfDetect unusual conditionsDetect when things risk to get out of handPrevent things from happeningProtect against accidentsMonitor the impact of eventsProvide early assistanceSupport and follow up rehabilitation
Coordination action for enhancing thebreakthrough of intelligent textile systems(e-textiles and wearable Microsystems) www. .orgCOLAE: Commercialisation Clusters of OLAE www. .eu
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