Controlling the Dynamics and Optical Binding of Nanoparticle Homodimers with Transverse Phase Gradients
| Autor: | Norbert F. Scherer, Stuart A. Rice, Curtis W. Peterson, John Parker |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Mechanical Engineering Non-equilibrium thermodynamics Nanoparticle Energy landscape Bioengineering 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Symmetry (physics) law.invention Transverse plane Optical tweezers Optical microscope Chemical physics law Phase (matter) General Materials Science 0210 nano-technology |
| Zdroj: | Nano letters. 19(2) |
| ISSN: | 1530-6992 |
| Popis: | While transverse phase gradients enable studies of driven nonequilibrium phenomena in optical trapping, the behavior of electrodynamically interacting particles in a transverse phase gradient has not been explored in detail. In this Letter we study electrodynamically interacting pairs of identical nanoparticles (homodimers) in transverse phase gradients. We establish that the net driving force on homodimers is modulated by a separation-dependent interference effect for small phase gradients. By contrast, large phase gradients break the symmetry of the interaction between particles and profoundly change the electrodynamic interparticle energy landscape. Our findings are particularly important for understanding multiparticle dynamics during the self-assembly and rearrangement of optical matter. |
| Databáze: | OpenAIRE |
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