Search

Your search keyword '"Glaser, Matthew A."' showing total 17 results
Start Over Author "Glaser, Matthew A." Journal physical review e
17 results on '"Glaser, Matthew A."'

2. Active microrheology of smectic membranes

Author

Qi, Zhiyuan, primary, Ferguson, Kyle, additional, Sechrest, Yancey, additional, Munsat, Tobin, additional, Park, Cheol Soo, additional, Glaser, Matthew A., additional, Maclennan, Joseph E., additional, Clark, Noel A., additional, Kuriabova, Tatiana, additional, and Powers, Thomas R., additional

Published
2017
Full Text
View/download PDF

16. Experimental realization of an incompressible Newtonian fluid in two dimensions.

Author

Zhiyuan Qi, Cheol Soo Park, Glaser, Matthew A., Maclennan, Joseph E., and Clark, Noel A.

Subjects
*LIQUID crystal films, *NEWTONIAN fluids, *DIFFUSION coefficients
Abstract

The Brownian diffusion of micron-scale inclusions in freely suspended smectic-A liquid crystal films a few nanometers thick and several millimeters in diameter depends strongly on the air surrounding the film. Near atmospheric pressure, the three-dimensionally coupled film-gas system is well described by Hughes-Pailthorpe-White hydrodynamic theory but at lower pressure (p≲70 torr), the diffusion coefficient increases substantially, tending in high vacuum toward the two-dimensional limit where it is determined by film size. In the absence of air, the films are found to be a nearly ideal physical realization of a two-dimensional, incompressible Newtonian fluid. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

17. Active microrheology of smectic membranes.

Author

Zhiyuan Qi, Ferguson, Kyle, Sechrest, Yancey, Munsat, Tobin, Cheol Soo Park, Glaser, Matthew A., Maclennan, Joseph E., Clark, Noel A., Kuriabova, Tatiana, and Powers, Thomas R.

Subjects
*RHEOLOGY, *VISCOSITY, *HYDRODYNAMICS
Abstract

Thin fluid membranes embedded in a bulk fluid of different viscosity are of fundamental interest as experimental realizations of quasi-two-dimensional fluids and as models of biological membranes. We have probed the hydrodynamics of thin fluid membranes by active microrheology using small tracer particles to observe the highly anisotropic flow fields generated around a rigid oscillating post inserted into a freely suspended smectic liquid crystal film that is surrounded by air. In general, at distances more than a few Saffman lengths from the meniscus around the post, the measured velocities are larger than the flow computed by modeling a moving disklike inclusion of finite extent by superposing Levine-MacKintosh response functions for pointlike inclusions in a viscous membrane. The observed discrepancy is attributed to additional coupling of the film with the air below the film that is displaced directly by the shaft of the moving post. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results