Optothermal Tweezer Microscopy of Light-absorbing Colloids
Abstract
The objective of this proposal is to study Brownian dynamics of thermally active colloids using elastic light scattering. We intend to probe thermally active colloids and their assemblies in an optical tweezers. By utilizing translation and rotation resolved dual channel optical trapping methods, we intend to study the coherent light scattering from trapped objects. We will perform a parametric study as a function of composition, size, and shape-distortions of colloids, optical polarization of the incident and scattering beams, and as a function of substrate-composition. The implication of this study is to understand optothermal effects of trapped objects and has direct relevance in realizing active colloidal matter interfaced with fluids, which can be used as heat conducting meso-fluid in various environments.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 16, 2024
- Source ID
- FA23862314054
Entities
People
- G V Pavan Kumar
Organizations
- Air Force Office of Scientific Research
- Indian Institutes of Science Education and Research
- United States Air Force