Booosting marktplts nw materialen 22mei12_dirk_broer

PolyArch project: New Organic Materials for Architecturewith Prospects to Climate and Energy Management

Dirk 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

Looking for new application areas: e.g. responsive functions in buildings

Responding wall textures, energy collecting

windows, sensing paints, switching textiles,

functionalized bricks, self-cleaning

tiles, ..................

On a future towards

•green buildings: energy and water

•indoor well-being and health

•autonomous, pro-active and intelligent but

controlled and adapted to user wishes

Where materials scientists meet architecture and design

Faculteit Bouwkunde

FORM/ad

Poly Arch project

Smart materials find already their way to architecture

E.g. low surface energy surfaces for self-cleaning, non-wetting and non-adhering

and for antireflex, e.g. on solar cells

DSM KhepriCoat™ coating sunarc®-anti-reflex glass

SolarExcelcover sheet

• anti-static• conductive/EMI shielding• anti-fouling• anti-fogging• anti-microbial• lubricious• anti-abrasion• anti-corrosion• barrier• …………..• …………..• …………..

And a variety of other nano-tech based functional materials

Today’s discussion:•next generation materials•with improved functionalities•with added functionalities•in the perspective of architecture

8Challenge the future

Chances for liquid crystal technologies in glass panes:

-Reduced constructional complexity

-Architectural freedom

(Architects are the main decision

makers)

-Simple embedding in the traditional

prefabrication processes

Strategies for daylight control

Tillman Klein

Other smart materials, e.g.:•hydrogels•photo- and electrochrome•ordered dipoles for ferroelectrics•hierarchically ordered nano structured surfaces (gecko’s)•self-organizing materials for e.g. self-healing•…………………………

Architecture’s wish list

O2 in / CO2 out

How can roofs be designed to meet lighting requirements mediating exterior daylight conditions by Morphogenesis

Adaptive daylight structures

From brainstorm discussions with Tillmann Kleinand colleagues / TU Delft

How does TU/e research fit in these concepts ?

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 ArtsSchool of Architecture

Light/heat responsive geometry changes

based on liquid crystal technologies

Laurens de Haan in collaboration with Mark Warner (Cambridge) & Carlos Sanchez (Zaragoza)

Also other groups are working on similar tech

Bunning group, Air Force Lab Dayton, USA:•micro air vehicles (high freq)

Ikeda group, Tokyo Univ. Technology:•motors•moving objects

We can (inkjet) print responsive cilia

Casper van Oosten

And we can create dynamic surface topologies

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UV

UV remove

Danqing Liu

And E-field responsive geometries

Or responses to other triggers

pH humidity

Controlling light by chiral nematics

Right-handed helix reflects right-handed circularly polarized light

left-handed circularly polarized lightis transmitted

.o n pλ =

o

n

nλ λ ∆∆ =p

APV

Chiral-nematic network reduces light leakage

Solarcell

Michael Debije, Shufen Tsoi, Paul Verbunt, Ties de Jong, Dick de Boer, Cees Bastiaansen

AcolAcol>>APV

€ € col<< € € PV

transmittedreflected

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Recovered: ~ 40 % of escaping light 12 % more light on solar cell

Color changing chiral nematic sensors

.o n pλ =

Example: a chiral nematic CO2 sensor

Taddol-diamine complex

CO2CO2

decomplexation and shift in helical twisting power

color shift

CO2

Y. Han, K. Pacheco, C.W. M. Bastiaansen and R.P. Sijbesma

Sensing pigments

• Cholesteric pigments are known• Wacker Chemie, Univ. Bayreuth, BASF,

Chelix, ……)• Security Inks• Special effect coatings• Cosmetics

Univ. Bayreuth (H.-W. Schmidt et al.)

BASF

Chelix(security inks)

Architect’s wish list:• Opportunity:

We can develop responsive pigments for e.g. responsive paints. Interact with:• Light (sunlight, LED illumination)• Temperature• Humidity• Presence/absence of gases• Responsive IR reflectors for climate

control

Membranes and (nano)porous systems

3 µm

400 nm

1 µm

90 nm

3 nm

1 nm

Switchable membranes (1)

30-10-2009

pH or temperature

Switchable membranes (2)

fast diffusionof Nile Blue A

slow diffusionof Nile Blue A

dye uptake (5’)

cis azo trans azo

planar aligned sample

λ < 400 nm

∆

0.9 nm 0.55nm

hν

peristalticgas transport

Challenges & Exploitation

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

Challenges 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

Peerplus a TU/e start-up

30-10-2009

http://www.peerplus.nl

Architecture’s wish list

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How can roofs be designed to meet lighting requirements mediating exterior daylight conditions by Morphogenesis

Adaptive daylight structures

Acknowledgment

TU/e - SFDgroupEU FP7Marie Curie Training NetworkHierarchy

Booosting marktplts nw materialen 22mei12_dirk_broer

Technology

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