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The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles

Publication ,  Journal Article
Reyes, C; Fu, L; Suthanthiraraj, PPA; Owens, CE; Shields, CW; López, GP; Charbonneau, P; Wiley, BJ
Published in: Particle and Particle Systems Characterization
July 1, 2018

Acoustic waves are increasingly used to concentrate, separate, and pattern nanoparticles in liquids, but the extent to which nanoparticles of different size and composition can be focused is not well-defined. This article describes a simple analytical model for predicting the distribution of nanoparticles around the node of a 1D bulk acoustic standing wave over time as a function of pressure amplitude, acoustic contrast factor (i.e., nanoparticle and fluid composition), and size of the nanoparticles. Predictions from this model are systematically compared to results from experiments on gold nanoparticles of different sizes to determine the model's accuracy in estimating both the rate and the degree of nanoparticle focusing across a range of pressure amplitudes. The model is further used to predict the minimum particle size that can be focused for different nanoparticle and fluid compositions, and those predictions are tested with gold, silica, and polystyrene nanoparticles in water. A procedure combining UV-light and photoacid is used to induce the aggregation of nanoparticles to illustrate the effect of nanoparticle aggregation on the observed degree of acoustic focusing. Overall, these findings clarify the extent to which acoustic resonating devices can be used to manipulate, pattern, and enrich nanoparticles suspended in liquids.

Duke Scholars

Published In

Particle and Particle Systems Characterization

DOI

EISSN

1521-4117

ISSN

0934-0866

Publication Date

July 1, 2018

Volume

35

Issue

7

Related Subject Headings

  • Chemical Engineering
  • 4018 Nanotechnology
  • 4017 Mechanical engineering
  • 4004 Chemical engineering
  • 0913 Mechanical Engineering
  • 0904 Chemical Engineering
  • 0299 Other Physical Sciences
 

Citation

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ICMJE
MLA
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Reyes, C., Fu, L., Suthanthiraraj, P. P. A., Owens, C. E., Shields, C. W., López, G. P., … Wiley, B. J. (2018). The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles. Particle and Particle Systems Characterization, 35(7). https://doi.org/10.1002/ppsc.201700470
Reyes, C., L. Fu, P. P. A. Suthanthiraraj, C. E. Owens, C. W. Shields, G. P. López, P. Charbonneau, and B. J. Wiley. “The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles.” Particle and Particle Systems Characterization 35, no. 7 (July 1, 2018). https://doi.org/10.1002/ppsc.201700470.
Reyes C, Fu L, Suthanthiraraj PPA, Owens CE, Shields CW, López GP, et al. The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles. Particle and Particle Systems Characterization. 2018 Jul 1;35(7).
Reyes, C., et al. “The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles.” Particle and Particle Systems Characterization, vol. 35, no. 7, July 2018. Scopus, doi:10.1002/ppsc.201700470.
Reyes C, Fu L, Suthanthiraraj PPA, Owens CE, Shields CW, López GP, Charbonneau P, Wiley BJ. The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles. Particle and Particle Systems Characterization. 2018 Jul 1;35(7).
Journal cover image

Published In

Particle and Particle Systems Characterization

DOI

EISSN

1521-4117

ISSN

0934-0866

Publication Date

July 1, 2018

Volume

35

Issue

7

Related Subject Headings

  • Chemical Engineering
  • 4018 Nanotechnology
  • 4017 Mechanical engineering
  • 4004 Chemical engineering
  • 0913 Mechanical Engineering
  • 0904 Chemical Engineering
  • 0299 Other Physical Sciences