Booosting marktplts nw materialen 22mei12_dirk_broer

PolyArch project: New OrganicMaterials for Architecturewith Prospects to Climate and Energy ManagementDirk J. Broer Dept. Chemical Engineering & Chemistry Functional Organic Materials & Devices

Basic assumption of PolyArch• We have developed materials that can do more than providing a passive function• We call them ‘Smart Materials’• We use them already in advanced applications like large TV screens, 3D television, telecommunication, healthcare, military, ……………• We should also be able to introduce them in architecture page 2

Looking for new application areas: e.g. responsive functions in buildingsResponding wall textures, energy collectingwindows, sensing paints, switching textiles,functionalized bricks, self-cleaningtiles, ..................On a future towards•green buildings: energy and water•indoor well-being and health•autonomous, pro-active and intelligent butcontrolled and adapted to user wishes page 3

Where materials scientists meet architecture and design Faculteit Bouwkunde Poly Arch projectFORM/ad page 4

Smart materials find already their wayto architecture E.g. low surface energy surfaces for self- cleaning, non-wetting and non-adhering page 5

and for antireflex, e.g. on solar cells SolarExcel cover sheetDSM KhepriCoat™ coating sunarc®-anti-reflex glass page 6

And a variety of other nano-tech basedfunctional materials• anti-static• conductive/EMI shielding• anti-fouling• anti-fogging• anti-microbial• lubricious• anti-abrasion• anti-corrosion• barrier• …………..• …………..• ………….. Today’s discussion: •next generation materials •with improved functionalities •with added functionalities •in the perspective of architecture page 7

Strategies fordaylight controlChances for liquid crystal technologiesin glass panes:-Reduced constructional complexity-Architectural freedom Other smart materials, e.g.: (Architects are the main decision •hydrogels •photo- and electrochromemakers) •ordered dipoles for-Simple embedding in the traditional ferroelectrics prefabrication processes •hierarchically ordered nano structured surfaces (gecko’s) •self-organizing materials for e.g. self-healing •………………………… Tillman Klein Challenge the future 8

Architecture’s wish listO 2 in / C O 2 out Adaptive daylight structures How can roofs be designed to meet lighting requirements mediating exterior daylight conditions by Morphogenesis From brainstorm discussions with Tillmann Klein page 9 and colleagues / TU Delft

How does TU/e research fit in theseconcepts ?Projects on:•Soft actuators / morphing materials•Light-responsive materials•Energy harvesting / sun-light collectors•Sensors / sensing pigments•Membrane technology / hierarchical concepts Royal Danish School of Fine Arts School of Architecture page 10

Light/heat responsive geometry changes based on liquid crystal technologies page 11Laurens de Haan in collaboration with Mark Warner (Cambridge) & Carlos Sanchez (Zaragoza)

Also other groups are workingon similar techIkeda group, Tokyo Univ. Bunning group, Air Force LabTechnology: Dayton, USA:•motors •micro air vehicles (high freq)•moving objects page 12

We can (inkjet) print responsive cilia page 13Casper van Oosten

And we can create dynamic surfacetopologies Initial UV µm UV remove µm page 14Danqing Liu

And E-field responsive geometries page 15

Or responses to other triggers pH humidity page 16

Controlling light by chiral nematics Right-handed helix reflects right- handed circularly polarized light λo = n.p p ∆n ∆λ = λo n left-handed circularly polarized light is transmitted page 17

m Absorbance 0.4 0.4 0.2 0.2 Chiral-nematic network reduces light leakage -1 0.0 0.0 ) 400 450 500 550 600 Wavelength (nm) Solar cell APV Acol Recovered: Acol>>APV ~ 40 % of escaping light 12 % more light on solar transmitted € € col<< € € PV cell reflected page 18Michael Debije, Shufen Tsoi, Paul Verbunt, Ties de Jong, Dick de Boer, Cees Bastiaansen

Color changing chiral nematic sensors λo = n.p page 19

Example: a chiral nematic CO2 sensor Taddol-diamine complex CO2 CO2 decomplexation and shift CO2 in helical twisting power color shift page 20Y. Han, K. Pacheco, C.W. M. Bastiaansen and R.P. Sijbesma

Sensing pigments• Cholesteric pigments are known • Wacker Chemie, Univ. Bayreuth, BASF, Chelix, ……) Univ. Bayreuth • Security Inks (H.-W. Schmidt et • Special effect coatings BASF • Cosmetics• Opportunity: We can develop responsive pigments Architect’s wish list: for e.g. responsive paints. Interact with: • Light (sunlight, LED illumination) • Temperature • Humidity • Presence/absence of gases Chelix • (security inks) Responsive IR reflectors for climate control page 21

Membranes and (nano)porous systems 3 µm 1 µm 400 nm 90 nm 3 nm 1 nm page 22

Switchable membranes (1) 30-10-2009 pH or temperature page 23

Switchable membranes (2) λ < 400 nm ∆ 0.9 nm 0.55nm dye uptake (5’) planar aligned sample cis azo trans azo fast diffusion slow diffusion of Nile Blue A of Nile Blue A hν peristaltic gas transport page 24

Challenges & ExploitationChallenges and new projects:• Solar tracking lenses and light concentrators• Other trigger principles• New molecules, e.g. to replace azo for improved stability• Control over complex morphing figures• Responsive fibers and fabrics (QM)• Energy harvesting actuators: breeze, vibration Exploitation: • Joint projects with architectural world (Eindhoven, Delft, Copenhagen) for a variety of applications • Project with Philips, Sioen for large area illumination • Micro-optics for solar energy (Solarexcel) • Smart windows / climate control (PEER+) • Integrated energy harvesting constructs for autonomous, wireless energy generation page 25

Peerplus a TU/e start-up http://www.peerplus.nl 30-10-2009 page 26

Architecture’s wish list 1.0 Emission (mWnm ) 0.8 0.8 Absorbance 0.6 0.6 0.4 0.4 0.2 0.2O 2 in / C O 2 out -1 0.0 0.0 400 450 500 550 600 Wavelength (nm) Adaptive daylight structures How can roofs be designed to meet lighting requirements mediating exterior daylight conditions by Morphogenesis page 27

Acknowledgment TU/e - SFDgroup EU FP7 Marie Curie Training Network Hierarchy page 28

Booosting marktplts nw materialen 22mei12_dirk_broer

by Stichting Booosting on May 31, 2012

Accessibility

Categories

Upload Details

Usage Rights

1 Embed 123

Statistics

Booosting marktplts nw materialen 22mei12_dirk_broer Presentation Transcript