Photonic Crystals Fabricated Using Block Copolymers

Rapid self-assembly of brush block copolymers to photonic crystals.

The reduced chain entanglement of brush polymers over their linear analogs drastically lowers the energetic barriers to reorganization. In this report, we demonstrate the rapid self-assembly of brush block copolymers to nanostructures with photonic bandgaps spanning the entire visible spectrum, from ultraviolet (UV) to near infrared (NIR). Linear relationships were observed between the peak wav...

Block Copolymers as Photonic Bandgap Materials

Block copolymers self-assemble into one-, two-, and three-dimensional periodic equilibrium structures, which can exhibit photonic bandgaps. This paper outlines a methodology for producing photonic crystals at optical length scales from block copolymers. Techniques for enhancing the intrinsic dielectric contrast between the block copolymer domains, as well as increasing the characteristic microd...

Thermally Tunable Metallodielectric Photonic Crystals from Self-assembly of Brush Block Copolymers and Gold Nanoparticles

Dr. D.-P. Song 1, C. Li 2, N. S. Colella 3, Prof. J. J. Watkins 6 Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, 01003, USA E-mail: [email protected] Prof. J.-H. Lee 5 Department of Mechanical and Industrial Engineering, University of Massachusetts Amherst, 160 Governors Drive, Amherst, MA 01003, USA Prof. X. Lu 4 School...

Band Structure of Photonic Crystals Fabricated by Two-Photon Polymerization

We study theoretically the band-gap structures of several types of three-dimensional photonic crystals with the fcc lattice symmetry: synthetic opals, inverted yablonovite and woodpile. The samples of inverted yablonovite, inverted yablonovite with a glassy superstructure and woodpile are fabricated by two-photon polymerization through a direct laser writing technique, which allows the creation...

Nano-Devices Using Block-Copolymers