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VISIRday SIGNED

VISible to far-IR optical tuning: passive DAYtime cooling by hierarchical structures and hybrid materials

Total Cost €

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EC-Contrib. €

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Partnership

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 Outcomes and results

 VISIRday project word cloud

Explore the words cloud of the VISIRday project. It provides you a very rough idea of what is the project "VISIRday" about.

solar    entire    conceive    thermal    offers    direct    combine    visirday    efficient    space    block    fibres    nm    ant    colloidal    window    optical    emit    device    concomitantly    stringent    tuneable    examples    finely    holistic    provides    structures    class    radically    ir    push    green    mix    inspired    mesostructured    chance    sky    cooling    supporting    materials    breaking    daytime    load    removed    emissive    radiative    ground    energy    13    consumption    simulations    insights    300    nano    structured    absorption    write    counteract    nanostructures    combination    heat    off    outer    add    scattering    engine    technologies    reflective    wavelengths    influx    nature    building    micro    hybrid    finite    material    radiance    urgently    surface    convinced    optimum    silver    rules    spectral    lower    beetles    adjustable    experimental    understand    radiatively    externally    intricate    adjusted    hierarchically    team    complement    am    lithography    polariton    white    metallic    mid    phonon    reflection    assembly    saharan    transparent    atmosphere    self    cold    fundamental    mesoparticles    polymers    minimized    paints   

Project "VISIRday" data sheet

The following table provides information about the project.

Coordinator		 UNIVERSITAT BAYREUTH 

Organization address
address: UNIVERSITATSSTRASSE 30
city: BAYREUTH
postcode: 95447
website: www.uni-bayreuth.de

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.
 Coordinator Country Germany [DE]
 Project website http://www.retsch.uni-bayreuth.de/en/research/06_erc/index.html
 Total cost 1˙487˙636 €
 EC max contribution 1˙487˙636 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-STG
 Funding Scheme ERC-STG
 Starting year 2017
 Duration (year-month-day) from 2017-03-01   to  2022-02-28

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAT BAYREUTH DE (BAYREUTH) coordinator 1˙487˙636.00

Map

 Project objective

Efficient daytime cooling without the need for a heat engine is an essential technology to lower our overall energy consumption. Nature offers a chance to off-load heat directly into the cold outer space via the so-called “sky window”: a spectral range from 8 – 13 µm, where our atmosphere is transparent. Concomitantly, solar radiance influx needs to be minimized by scattering and reflection, which would counteract the radiatively removed energy. VISIRday aims to provide ground-breaking new materials and concepts to emit thermal energy directly into this transparent sky window. A radically holistic approach is necessary to understand and design the optical properties of nano- and mesostructured materials over the entire spectral range (300 nm – 20 µm), with the mid-IR sky window being fully emissive, and all other spectral wavelengths being fully reflective. I will therefore combine top-down direct write lithography with intricate bottom-up colloidal self-assembly to device hierarchically structured systems fully addressing these stringent optical properties. A new material class – surface phonon polariton supporting nano- and mesoparticles – with adjustable absorption properties in the mid-IR range, will take a leading role as novel colloidal building block. In combination with polymers and metallic nanostructures my team will demonstrate hybrid structures with finely adjusted and even externally tuneable optical properties. Simulations based on finite element modelling to conceive optimum design rules will complement the experimental work. Inspired by examples from nature, namely white beetles and the Saharan silver ant, I will push the fundamental insights towards novel technologies such as radiative daytime cooling paints and fibres. I am convinced that this project provides the urgently needed materials and concepts to add radiative daytime cooling to the existing mix of green energy technologies.

 Publications

year authors and title journal last update
List of publications.
2019 Philipp, A., Pech-May, N. W., Kopera, B. A. F., Lechner, A. M., Rosenfeldt, S., Retsch, M.
Direct Measurement of the In-Plane Thermal Diffusivity of Semitransparent Thin Films by Lock-In Thermography: An Extension of the Slopes Method
published pages: 8476-8483, ISSN: 0003-2700, DOI: 10.1021/acs.analchem.9b01583 		Analytical Chemistry 91, 13 2020-02-27

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The information about "VISIRDAY" are provided by the European Opendata Portal: CORDIS opendata.

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