Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 15, Pages 4917-4922Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201814060
Keywords
light-driven self-healing; metamolecules; optical tweezers; plasmonic nanoparticles; photophysics
Categories
Funding
- National Science Foundation [1610271]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1610271] Funding Source: National Science Foundation
Ask authors/readers for more resources
Metamolecules and crystals consisting of nanoscale building blocks offer rich models to study colloidal chemistry, materials science, and photonics. Herein we demonstrate the self-assembly of colloidal Ag nanoparticles into quasi-one-dimensional metamolecules with an intriguing self-healing ability in a linearly polarized optical field. By investigating the spatial stability of the metamolecules, we found that the origin of self-healing is the inhomogeneous interparticle electrodynamic interactions enhanced by the formation of unusual nanoparticle dimers, which minimize the free energy of the whole structure. The equilibrium configuration and self-healing behavior can be further tuned by modifying the electrical double layers surrounding the nanoparticles. Our results reveal a unique route to build self-healing colloidal structures assembled from simple metal nanoparticles. This approach could potentially lead to reconfigurable plasmonic devices for photonic and sensing applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available