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Assembling Color on the Nanoscale: Multichromatic Switchable Pixels from Plasmonic Atoms and Molecules
Tianhong Chen1, Björn M Reinhard1
1Department of Chemistry and The Photonics Center, Boston University, Boston, MA, 02215, USA.
Advanced Materials (Deerfield Beach, Fla.)
|March 19, 2016
Summary
Researchers developed a method to create tunable plasmonic pixels using directed self-assembly. These pixels offer stable, switchable optical responses with controllable color and polarization for advanced optical applications.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Plasmonic nanomaterials offer unique optical properties.
- Precise control over nanoparticle arrangement is crucial for tailored optical responses.
- Existing methods for creating plasmonic structures can be complex and limited in tunability.
Purpose of the Study:
- To develop a versatile method for fabricating plasmonic atoms and molecules with defined shapes and locations.
- To achieve rational tuning of optical properties, including color and polarization, in self-assembled plasmonic structures.
- To demonstrate the potential of these structures as switchable optical elements.
Main Methods:
- Sequential directed self-assembly of nanoparticles.
- Utilizing a single patterning step for structure formation.
- Characterization of optical properties such as color emission and polarization.
Main Results:
- Successfully integrated nanoparticles into plasmonic structures of defined shape and location.
- Demonstrated tunable color emission across the visible spectrum.
- Achieved switchable polarization properties in the self-assembled plasmonic pixels.
Conclusions:
- Self-assembled plasmonic pixels offer tunable, stable, and switchable optical responses.
- The demonstrated method provides a pathway for creating advanced optical components.
- This approach enables precise control over light-matter interactions at the nanoscale.
