3D optical metamaterials
Replication of 3D nanostructured networks into plasmonic metals gives rise to optical metamaterials
The individual, chemically distinct, blocks of a three-dimensionally ordered polymeric network can be etched separately. Voiding one network results in a porous scaffold that can be backfilled with plasmonic metals (e.g., Ag, Au) in order to create novel materials with interesting optical properties. This route provides an elegant way to replicate self-assembled structures into materials that are not amenable to forming such complex morphologies.
Fabrication of metamaterials by self-assembly of block copolymers.
The gyroid is an interesting morphology formed by the self-assembly of block copolymers. Due to its unique geometry (i.e., chiral, periodic and continuous) the gyroid can serve as a template for the fabrication of nanostructured plasmonic metals, which can act as optical metamaterials. In this project we work on the controlled manufacture of metamaterials by: (i) understanding the self-assembly of terpolymer thin films during a solvent vapour annealing experiment; (ii) fulfilling the polymer templates by means of a metal electrodeposition step (e.g., Au) and the subsequent removal of the polymer template; (iii) and performing optical characterization on the fabricated structures.
The resulting gyroid optical metamaterials exhibit strongly anisotropic plasmon modes with pronounced dichroism and optical activity across the visible wavelength region.
Experimental techniques: SEM, SAXS, polarized light microscopy, transmission and reflection goniometry, polymer solvent annealing, electroplating.
- Related publications
Gyroid Optical Metamaterials: Calculating the Effective Permittivity of Multidomain Samples
Dolan James A., Saba Matthias, Dehmel Raphael, Gunkel Ilja, Gu Yibei, Wiesner Ulrich, Hess Ortwin, Wilkinson Timothy D., Baumberg Jeremy J., Steiner Ullrich, Wilts Bodo D.
ACS Photonics (2016)Optical Properties of Gyroid Structured Materials: From Photonic Crystals to Metamaterials
Dolan James A., Wilts Bodo D., Vignolini Silvia, Baumberg Jeremy J., Steiner Ullrich, Wilkinson Timothy D.
Advanced Optical Materials (2014)Spectrally resolved surface plasmon resonance dispersion using half-ball optics
Dehmel Raphael, Baumberg Jeremy J., Steiner Ullrich, Wilts Bodo D.
Applied Physics Letters (2017)Determining the complex Jones matrix elements of a chiral 3D optical metamaterial
Kilchoer Cédric, Abdollahi Narjes, Steiner Ullrich, Gunkel Ilja, Wilts Bodo D.
APL Photonics (2019)Strong Circular Dichroism in Single Gyroid Optical Metamaterials
Kilchoer Cédric, Abdollahi Narjes, Dolan James A., Abdelrahman Doha, Saba Matthias, Wiesner Ulrich, Steiner Ullrich, Gunkel Ilja, Wilts Bodo D.
Advanced Optical Materials (2020)
- Related projects
Projects of ABDELRAHMAN Doha
Projects of ABDOLLAHI Narjes
Projects of GUNKEL Ilja
Projects of KILCHOER Cédric
Projects of WILTS Bodo