Tracer diffusion in nanofluids measured by fluorescence correlation spectroscopy
Source abstract
Abstract
Nanofluids exhibit some intriguing thermal properties, and have great potential to increase efficiency in various heat technological applications in micro- and nano-technology. Recent studies on mass transport in nanofluids yielded some interesting but controversial results. In this communication, we report the tracer diffusion of fluorescent dye in different nanofluids. Measurements were performed using fluorescence correlation spectroscopy (FCS). Nanoparticle concentration in the nanofluid varied up to 1.7 vol%, and the diffusion coefficient of fluorescent dye was measured. Our results showed no significant changes in diffusion of dyes in the concentration range used, and the results indicate that more research is needed to completely understand the diffusion in nanofluids. This communication brings upon the powerful FCS technique for the first time to study the dynamics of nanofluids.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanofluid Flow and Heat Transfer · Solar Thermal and Photovoltaic Systems · Nanopore and Nanochannel Transport Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. Berland KM, So PTC et al (1995) 2-Photon fluorescence correlation spectroscopy—method and application to the intracellular environment. Biophys J 68(2):694–70110.1016/S0006-3495(95)80230-4 ↗
2. Bisquert J (2004) Chemical diffusion coefficients of electrons in nanostructured semiconductor electrodes and dye-sensitive solar cells. J Phys Chem B 108:2323–233210.1021/jp035397i ↗
3. Bocquet L, Charlaix E (2010) Nanofluidics from bulk to interfaces. Chem Soc Rev 39(3):1073–109510.1039/B909366B ↗
4. Cherdhirankorn T, Best A et al (2009) Diffusion in polymer solutions studied by fluorescence correlation spectroscopy. J Phys Chem B 113(11):3355–335910.1021/jp809707y ↗
5. Choi SUS, Eastman JA (1995) Enhancing thermal conductivity of fluids with nanoparticles. ASME International Mechanical Engineering Congress and Exposition, San Francisco
6. Cussler EL (1984) Diffusion: mass transfer in fluid systems. Cambridge University Press, New York
7. Das SK, Choi SUS, Yu W, Pradeep T (2008) Nanofluids: science and technology. Wiley, Hoboken
8. Eastman JA, Choi SUS, Li S, Thompson LJ, Lee S (1996) Enhanced thermal conductivity through the development of nanofluids. Fall meeting of the materials research society, Boston
9. Eastman JA, Choi SUS, Li S, Soyez G, Thompson LJ, DiMelfi RJ (1999) Novel thermal properties of nanostructured materials. Mater Sci Forum 312–314:629–63410.4028/www.scientific.net/MSF.312-314.629 ↗
10. Eastman JA, Choi SUS et al (2001) Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles. Appl Phys Lett 78(6):718–72010.1063/1.1341218 ↗
11. Eastman JA, Phillpot SR et al (2004) Thermal transport in nanofluids. Ann Rev Mater Res 34:219–24610.1146/annurev.matsci.34.052803.090621 ↗
12. Einstein A (1956) Investigations on the theory of the brownian movement. Dover Publications, New York
13. Fang XP, Xuan YM et al (2009) Experimental investigation on enhanced mass transfer in nanofluids. Appl Phys Lett 95(20):20310810.1063/1.3263731 ↗
14. Gerardi CC, Buongiorno DJ, Hu LW (2007) Nuclear magnetic resonance measurement of diffusion coefficients. T Am Nucl Soc 96:485–486
15. Keblinski P, Phillpot SR et al (2002) Mechanisms of heat flow in suspensions of nano-sized particles (nanofluids). Int J Heat Mass Tran 45(4):855–86310.1016/S0017-9310(01)00175-2 ↗
16. Krishnamurthy S, Bhattacharya P et al (2006) Enhanced mass transport in nanofluids. Nano Lett 6(3):419–42310.1021/nl0522532 ↗
17. Lee S, Choi SUS et al (1999) Measuring thermal conductivity of fluids containing oxide nanoparticles. J Heat Trans-T ASME 121(2):280–28910.1115/1.2825978 ↗
18. Magde EED, Webb WW (1972) Thermodynamic fluctuations in a reacting system—measurement by fluorescence correlation. Phys Rev Lett 29(11):705–70810.1103/PhysRevLett.29.705 ↗
19. Magde D, Elson EL, Webb WW (1974) Fluorescence correlation spectroscopy II. An experimental realization. Biopolymers 13:29–6110.1002/bip.1974.360130103 ↗
20. Omari RA, Grabowski CA et al (2009) Effect of surface curvature on critical adsorption. Phys Rev Lett 103(22):22570510.1103/PhysRevLett.103.225705 ↗
21. Ozturk S, Hassan YA et al (2010) Interfacial complexation explains anomalous diffusion in nanofluids. Nano Lett 10(2):665–67110.1021/nl903814r ↗
22. Petrášek Z, Schwille P (2008) Precise measurement of diffusion coefficients using scanning fluorescence correlation spectroscopy. Biophys J 94:1437–144810.1529/biophysj.107.108811 ↗
23. Schwille P, Haupts U et al (1999) Molecular dynamics in living cells observed by fluorescence correlation spectroscopy with one- and two-photon excitation. Biophys J 77(4):2251–226510.1016/S0006-3495(99)77065-7 ↗
24. Turanov AN, Tolmachev YV (2009) Heat- and mass-transport in aqueous silica nanofluids. Heat Mass Transf 45(12):1583–158810.1007/s00231-009-0533-6 ↗
25. Xuan YM (2009) Conception for enhanced mass transport in binary nanofluids. Heat Mass Transf 46(2):277–27910.1007/s00231-009-0564-z ↗
26. Zhao J, Granick S (2007) How polymer surface diffusion depends on surface coverage. Macromolecules 40(4):1243–124710.1021/ma062104l ↗