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Naslov:Through-plane and in-plane thermal diffusivity determination of graphene nanoplatelets by photothermal beam deflection spectrometry
Avtorji:ID Cabrera, Humberto (Avtor)
ID Korte, Dorota (Avtor)
ID Budasheva, Hanna (Avtor)
ID Asbaghi, Behnaz Abbasgholi N. (Avtor)
ID Bellucci, Stefano (Avtor)
Datoteke:URL https://www.mdpi.com/1996-1944/14/23/7273
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:In this work, in-plane and through-plane thermal diffusivities and conductivities of a freestanding sheet of graphene nanoplatelets are determined using photothermal beam deflection spectrometry. Two experimental methods were employed in order to observe the effect of load pressures on the thermal diffusivity and conductivity of the materials. The in-plane thermal diffusivity was determined by the use of a slope method supported by a new theoretical model, whereas the through-plane thermal diffusivity was determined by a frequency scan method in which the obtained data were processed with a specifically developed least-squares data processing algorithm. On the basis of the determined values, the in-plane and through-plane thermal conductivities and their dependences on the values of thermal diffusivity were found. The results show a significant difference in the character of thermal parameter dependence between the two methods. In the case of the in-plane configuration of the experimental setup, the thermal conductivity decreases with the increase in thermal diffusivity, whereas with the through-plane variant, the thermal conductivity increases with an increase in thermal diffusivity for the whole range of the loading pressure used. This behavior is due to the dependence of heat propagation on changes introduced in the graphene nano-platelets structure by compression.
Ključne besede:graphene nanoplatelets, thermal diffusivity, thermal conductivity, photothermal spectrometry
Leto izida:2021
Št. strani:str. 1-17
Številčenje:Vol. 14, iss. 23
PID:20.500.12556/RUNG-7012 Novo okno
COBISS.SI-ID:87055363 Novo okno
UDK:620.1/.2
ISSN pri članku:1996-1944
DOI:10.3390/ma14237273 Novo okno
NUK URN:URN:SI:UNG:REP:BG40W6TR
Datum objave v RUNG:30.11.2021
Število ogledov:3367
Število prenosov:75
Metapodatki:XML DC-XML DC-RDF
:
CABRERA, Humberto, KORTE, Dorota, BUDASHEVA, Hanna, ASBAGHI, Behnaz Abbasgholi N. in BELLUCCI, Stefano, 2021, Through-plane and in-plane thermal diffusivity determination of graphene nanoplatelets by photothermal beam deflection spectrometry. Materials [na spletu]. 2021. Vol. 14, no. 23, p. 1–17. [Dostopano 30 marec 2025]. DOI 10.3390/ma14237273. Pridobljeno s: https://www.mdpi.com/1996-1944/14/23/7273
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Naslov:Materials
Skrajšan naslov:Materials
Založnik:Molecular Diversity Preservation International
ISSN:1996-1944
COBISS.SI-ID:33588485 Novo okno

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