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| Title: | Experimental verification of near-wall hindered diffusion theory for the Brownian motion of nanoparticles using evanescent wave Microscopy | |
| Author (s): | Banerjee, Arindam . Kihm, K. D. | |
| Department/Lab Affiliations: | Mechanical & Aerospace Engineering | |
| Keywords: | Brownian motion fluorescence microscopy three-dimensional tracking total internal reflection | |
| Issue Date: | 2005 | |
| Publisher: | American Physical Society | |
| Citation: | Arindam Banerjee and K.D. Kihm- Experimental "Verification of Near-wall Hindered Diffusion Theory for the Brownian Motion of Nanoparticles using Evanescent Wave Microscopy"– Physical Review E, 72 (4), pp. 0421011-0421014 (2005). | |
| Abstract: | A total internal reflection fluorescence microscopy technique coupled with three-dimensional tracking of nanoparticles is used to experimentally verify the theory on near-wall hindered Brownian motion [Goldman et al., Chem. Eng. Sci. 22, 637 (1967); Brenner, Chem. Eng. Sci. 16, 242 (1967)] very close to the solid surface (within ~1 µm). The measured mean square displacements (MSDs) in the lateral x-y directions show good agreement with the theory for all tested nanoparticles of radii 50, 100, 250, and 500 nm. However, the measured MSDs in the z direction deviate substantially from the theory particularly for the case of smaller particles of 50 and 100 nm radius. Since the theory considers only the hydrodynamic interaction of moving particles with a stationary solid wall, additionally possible interaction forces like gravitational forces, van der Waals forces, and electro-osmotic forces have been examined to delineate the physical reasons for the discrepancy. | |
| Type: | Article - Journal text | |
| In Title: | Physical Review E | |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: | |
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| title | Experimental verification of near-wall hindered diffusion theory for the Brownian motion of nanoparticles using evanescent wave Microscopy | |
| contributor.author | Banerjee, Arindam . | |
| contributor.author | Kihm, K. D. | |
| contributor.deptlab | Mechanical & Aerospace Engineering | |
| subject | Brownian motion | |
| subject | fluorescence | |
| subject | microscopy | |
| subject | three-dimensional tracking | |
| subject | total internal reflection | |
| date.issued | 2005 | |
| publisher | American Physical Society | |
| identifier.citation | Arindam Banerjee and K.D. Kihm- Experimental "Verification of Near-wall Hindered Diffusion Theory for the Brownian Motion of Nanoparticles using Evanescent Wave Microscopy"– Physical Review E, 72 (4), pp. 0421011-0421014 (2005). | |
| identifier.pub.URI | ||
| description.abstract | A total internal reflection fluorescence microscopy technique coupled with three-dimensional tracking of nanoparticles is used to experimentally verify the theory on near-wall hindered Brownian motion [Goldman et al., Chem. Eng. Sci. 22, 637 (1967); Brenner, Chem. Eng. Sci. 16, 242 (1967)] very close to the solid surface (within ~1 µm). The measured mean square displacements (MSDs) in the lateral x-y directions show good agreement with the theory for all tested nanoparticles of radii 50, 100, 250, and 500 nm. However, the measured MSDs in the z direction deviate substantially from the theory particularly for the case of smaller particles of 50 and 100 nm radius. Since the theory considers only the hydrodynamic interaction of moving particles with a stationary solid wall, additionally possible interaction forces like gravitational forces, van der Waals forces, and electro-osmotic forces have been examined to delineate the physical reasons for the discrepancy. | |
| type | Article - Journal | |
| type.DCMIType | text | |
| type.status | Final version | |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. | |
| rights.URI | ||
| relation.isPartOf | Physical Review E | |
| date.accessioned | 2008-05-06T16:59:04Z | |
| date.available | 2008-05-06T16:59:02Z | |
| identifier.persist.URI | ||
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