Abstract

Confocal microscopy is used in the study of colloidal gels, glasses, and binary fluids. We measure the three-dimensional positions of colloidal particles with a precision of approximately 50 nm (a small fraction of each particle’s radius) and with a time resolution sufficient for tracking the thermal motions of several thousand particles at once. This information allows us to characterize the structure and the dynamics of these materials in qualitatively new ways, for example, by quantifying the topology of chains and clusters of particles as well as by measuring the spatial correlations between particles with high mobilities. We describe our experimental technique and describe measurements that complement the results of light scattering.

© 2001 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Tracking rotational diffusion of colloidal clusters

Gary L. Hunter, Kazem V. Edmond, Mark T. Elsesser, and Eric R. Weeks
Opt. Express 19(18) 17189-17202 (2011)

Influence of refractive-index mismatch in high-resolution three-dimensional confocal microscopy

Alberto Diaspro, Federico Federici, and Mauro Robello
Appl. Opt. 41(4) 685-690 (2002)

Holographic microscopy of holographically trapped three-dimensional structures

Sang-Hyuk Lee and David G. Grier
Opt. Express 15(4) 1505-1512 (2007)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription