1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
2. Όλο το Αποθετήριο
3. Μεταδιδακτορικοί ερευνητές

Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Smart patterned surfaces with programmable thermal emissivity and their design through combinatorial strategies
Συγγραφέας:	[EL] Αθανασόπουλος, Νικόλαος[EN] Athanasopoulos, Nikolaos [EL] Σιακαβέλλας, Νικόλαος[EN] Siakavellas, Nicolaos
Ημερομηνία:	10/10/2017
Περίληψη:	The emissivity of common materials remains constant with temperature variations, and cannot drastically change. However, it is possible to design its entire behaviour as a function of temperature, and to significantly alter the thermal emissivity of a surface through the combination of different patterns and materials. We show that smart patterned surfaces consisting of smaller structures (motifs) may be designed to respond uniquely through combinatorial strategies by transforming themselves. The smart surfaces can passively manipulate thermal radiation—without the use of electronics— because their modus operandi has already been programmed into their intrinsic characteristics; the environment provides the energy required for their activation. Each motif emits thermal radiation in a certain manner, as it changes its geometry; however, the spatial distribution of these motifs causes them to interact with each other. Therefore, their combination and interaction determine the global behaviour of the surfaces, thus enabling their a priori design. The emissivity behaviour is not random; it is determined by two fundamental parameters, namely the combination of orientations in which the motifs open (n-fold rotational symmetry) and the combination of materials (colours) on the motifs; these generate functions which fully determine the dependency of the emissivity on the temperature.
Γλώσσα:	Αγγλικά
Σελίδες:	16
DOI:	10.1038/s41598-017-13132-6
EISSN:	2045-2322
Θεματική κατηγορία:	[EL] Μηχανική Υλικών[EN] Materials Engineering [EL] Αεροδιαστημική μηχανική[EN] Aerospace Engineering [EL] Πυρηνική φυσική[EN] Nuclear Physics
Λέξεις-κλειδιά:	Smart materials; Thermal raditation; Thermal control; Cubesat; Shape memory materials; patterns; Radiation
Κάτοχος πνευματικών δικαιωμάτων:	© The Author(s) 2017
Όροι και προϋποθέσεις δικαιωμάτων:	Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Διατίθεται ανοιχτά στην τοποθεσία:	www.nature.com/articles/s41598-017-13132-6
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://www.nature.com/articles/s41598-017-13132-6
Ηλεκτρονική διεύθυνση περιοδικού:	https://www.nature.com/srep/
Τίτλος πηγής δημοσίευσης:	Scientific Reports
Τόμος:	7
Σελίδες τεκμηρίου (στην πηγή):	Article no 12908
Σημειώσεις:	This research is implemented through IKY scholarships programme and co-financed by the European Union (European Social Fund - ESF) and Greek national funds through the action entitled “Reinforcement of Postdoctoral Researchers” of the National Strategic Reference Framework (NSRF) 2014–2020. We would like to thank Ms Polyxeni Souridi for the final editing of the English manuscript and Dr Roberto Guzman de Villoria for the discussions.
Εμφανίζεται στις συλλογές:	Μεταδιδακτορικοί ερευνητές