Near field thermal memory based on radiative phase bistability of VO2
2015 (Engelska)Ingår i: Journal of Physics D: Applied Physics, ISSN 0022-3727, E-ISSN 1361-6463, Vol. 48, nr 30, artikel-id 305104Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
We report the concept of a near-field memory device based on the radiative bistability effect in the system of two closely separated parallel plates of SiO2 and VO2 which exchange heat by thermal radiation in vacuum. We demonstrate that the VO2 plate, having metal-insulator transition at 340 K, has two thermodynamical steady-states. One can switch between the states using an external laser impulse. We show that due to near-field photon tunneling between the plates, the switching time is found to be only 5 ms which is several orders lower than in case of far field.
Ort, förlag, år, upplaga, sidor
Institute of Physics Publishing (IOPP), 2015. Vol. 48, nr 30, artikel-id 305104
Nyckelord [en]
heat transfer, bistability, memory effect, metal insulator transition, thermal radiation
Nationell ämneskategori
Den kondenserade materiens fysik
Identifikatorer
URN: urn:nbn:se:umu:diva-221155DOI: 10.1088/0022-3727/48/30/305104ISI: 000357739500010Scopus ID: 2-s2.0-84937010975OAI: oai:DiVA.org:umu-221155DiVA, id: diva2:1839029
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