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MINIMALLY INVASIVE OPTICAL SENSING OF GOLD AND SILVER NANOPARTICLE AGGREGATION: A PRELIMINARY INVESTIGATION

Beamer, Diane Krupp
http://rave.ohiolink.edu/etdc/view?acc_num=miami1376405013

Abstract Details

2013, Master of Science, Miami University, Physics.
We investigated the possibility of using a novel optical sensor to distinguish aggregation as it occurs in gold and silver aqueous colloidal nanoparticle suspensions. Our sensor is based on the measurement of the reflectance of a divergent laser beam using a model we have developed for the angle dependent attenuation of the evanescent wave during Total Internal Reflection. We measure the increasing turbidity as aggregation occurs. From our measurement of the attenuation we extract a mean particle size using a Mie calculation, and compare our results with particle size measurements by standard technology such as Transmission Electron Microscopy and light scattering. We discuss some advantages offered by our sensor, and potential limitations.
Samir Bali, PhD (Committee Chair)
Perry Rice, PhD (Committee Member)
James Clemens, PhD (Committee Member)
94 p.
Biophysics; Nanoscience; Nanotechnology; Optics; Physics
Nanoparticle diameter; optical sensor; colloidal Au; aggregation; surface plasmon resonance; biosensing; portable; total internal reflection; bioconjugates; nanotechnology; refractive index; turbidity; Fresnel; Mie; evanescent; dielectric; attenuation;

Recommended Citations

Citations

  • Beamer, D. K. (2013). MINIMALLY INVASIVE OPTICAL SENSING OF GOLD AND SILVER NANOPARTICLE AGGREGATION: A PRELIMINARY INVESTIGATION [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1376405013

    APA Style (7th edition)

  • Beamer, Diane. MINIMALLY INVASIVE OPTICAL SENSING OF GOLD AND SILVER NANOPARTICLE AGGREGATION: A PRELIMINARY INVESTIGATION . 2013. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1376405013.

    MLA Style (8th edition)

  • Beamer, Diane. "MINIMALLY INVASIVE OPTICAL SENSING OF GOLD AND SILVER NANOPARTICLE AGGREGATION: A PRELIMINARY INVESTIGATION ." Master's thesis, Miami University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1376405013

    Chicago Manual of Style (17th edition)

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© 2013, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.