Abstract
The holographic video microscopy measurements of the size and refractive index of individual colloidal particles in the dispersion are precise enough to track subtle changes in particles' properties and rapid enough for real-time process control. We demonstrate this technique by applying it to the synthesis of monodisperse samples of crosslinked polydimethysiloxane (PDMS) spheres. The measured time dependence of these spheres' most probable radius and distribution width thereof are consistent with a modified LaMer model for colloidal growth. The joint distribution of size and refractive index, however, also reveals a small proportion of undersize, lower-density spheres. Applied over longer time periods, holographic characterization also tracks how the newly-synthesized spheres age, and illuminates the aging mechanism.
| Original language | American English |
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| Pages | 27008-27008 |
| State | Published - 2015 |
| Event | APS March Meeting 2015 - San Antonio, United States Duration: 2 Mar 2015 → 6 Mar 2015 https://www.aps.org/meetings/baps/march15.cfm |
Conference
| Conference | APS March Meeting 2015 |
|---|---|
| Country/Territory | United States |
| City | San Antonio |
| Period | 2/03/15 → 6/03/15 |
| Internet address |