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Journal of Nanoparticle Research
Erschienen in: Journal of Nanoparticle Research 8/2008

01.12.2008 | Technology and Applications

High accuracy photopyroelectric investigation of dynamic thermal parameters of Fe3O4 and CoFe2O4 magnetic nanofluids

verfasst von: D. Dadarlat, C. Neamtu, M. Streza, R. Turcu, I. Craciunescu, D. Bica, L. Vekas

Erschienen in: Journal of Nanoparticle Research | Ausgabe 8/2008

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Abstract

The suitability of the photopyroelectric (PPE) calorimetry in measuring the thermal parameters of nanofluids was demonstrated. The main advantages of the method (concerning nanofluids) as compared to classical calorimetric techniques are: high sensitivity and small amount of sample required. The thermal diffusivity and effusivity of some nanofluids based on Fe3O4 and CoFe2O4 type of nanoparticles (mean diameter 6.5 nm) were investigated by using two PPE detection configurations (back and front). In both cases, the information is contained in the phase of the PPE signal. Due to the high accuracy of the results (within ±0.5%) thermal diffusivity was found to be particularly sensitive to changes in relevant parameters of the nanofluid as carrier liquid, type and concentration of nanoparticles.
Vorheriger Artikel Thermal conductivity of nanofluids and size distribution of nanoparticles by Monte Carlo simulations
Nächster Artikel Silver-doped calcium phosphate nanopowders prepared by electrostatic spraying

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Metadaten
Titel
High accuracy photopyroelectric investigation of dynamic thermal parameters of Fe3O4 and CoFe2O4 magnetic nanofluids
verfasst von
D. Dadarlat
C. Neamtu
M. Streza
R. Turcu
I. Craciunescu
D. Bica
L. Vekas
Publikationsdatum
01.12.2008
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 8/2008
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-008-9386-z

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