EU H2020 Project "VISIRDAY (VISible to far-IR optical tuning: passive DAYtime cooling by hierarchical..)": description, partecipants, costs and EC-fundings

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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.

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

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

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

UNIVERSITAT BAYREUTH

DE (BAYREUTH)

coordinator

1˙487˙636.00

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

List of publications.
year	authors and title	journal	last update
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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