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Updated: Jul 16, 2026
10:35
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
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Modular Assembly of Metamaterials Using Light Gradients.
Apurba Paul1, Alexander Volk2, Mohammad Hokmabadi1
1Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA.
Advanced Materials (Deerfield Beach, Fla.)
|June 5, 2024
Summary
This pilot study demonstrates assembling photonic metamaterials (PMs) using light gradient forces and modular construction. The method successfully created PMs from nanoparticles, revealing resonance peaks via reflection spectroscopy.
Area of Science:
- Nanotechnology
- Photonics
- Materials Science
Background:
- Photonic metamaterials (PMs) offer unique light manipulation properties.
- Assembling complex 3D structures from nanoparticles (NPs) remains a challenge.
- Controlling nanoparticle arrangement is crucial for desired optical performance.
Purpose of the Study:
- To test the feasibility of assembling photonic metamaterials using light gradient forces.
- To investigate the optical properties of PMs constructed with dielectric nanoparticles.
- To evaluate the impact of assembly imperfections on material performance.
Main Methods:
- Utilized light gradient forces from a 1D standing wave optical trap to manipulate monodispersed nanoparticles (30-500 nm radii).
- Employed a modular construction strategy, assembling nanoparticles into voxels and then stitching voxels into 3D structures on a hydrogel scaffold.
- Analyzed near-infrared performance using angle-, wavelength-, and polarization-dependent reflection spectroscopy on polystyrene and rutile PMs.
Main Results:
- Successfully assembled heterogeneous voxels and 3D photonic metamaterials using polystyrene and rutile nanoparticles.
- Reflection spectroscopy revealed resonance peaks in the cross-polarized spectra of the assembled PMs.
- Observed distinct spectral line shapes for polystyrene (symmetric) and rutile (asymmetric, potentially Fano resonance) arrays, despite structural defects.
Conclusions:
- Light gradient forces provide a feasible method for assembling photonic metamaterials via modular construction.
- The assembled PMs exhibit optical resonances, demonstrating potential for tailored photonic properties.
- Structural imperfections influence the spectral characteristics, highlighting areas for future refinement in PM fabrication.
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