Gyroid-structured functional materials
The self-assembed double gyroid phase is replicated into metals and metal-oxides for the manufacture of functional materials
Our work is focused on nanostructuring of functional materials such as titania or vanadia, using porous diblock copolymer thin films with gyroid morphology. The double gyroid is a particularly interesting phase morphology of microphase separated diblock copolymers, where each of the immiscible blocks forms a triply periodic, self-supporting and continuous network or matrix. Together with its high surface area, the gyroid seems to be the perfect three dimensional structure for novel nanodevices. Using gyroid-structured materials we improve the performance of dye-sensitized solar cells, electrochromic displays, supercapacitors, etc.
Schematic of gyroid self-assembly and vanadia replication. a, Surface modication with octyltrichlorosilane and SU-8 photoresist patterning. b, P(F)S-b-PLA lm deposition and microphase separation of the block-copolymer into the double-gyroid morphology during annealing at 175 C. The red styrenic majority matrix encloses the blue interconnected lactide network. The front face shows the characteristic double wave pattern of the (211) plane. c, Selective removal of lactide yields a mesoporous template. d, Electrodeposition of vanadium pentoxide in the voided network. The deposition process is restricted to areas that are not covered by SU-8, thereby creating a design pattern in the electroplated V2O5. e, Dissolution of the polymer matrix reveals the freestanding V2O5 network. f,Assembly of a functional electrochromic nanodevice by capping with a transparent counter electrode and the injection of electrolyte. The application of 1V induces a color change.
- Related publications
Controlling Self-Assembly in Gyroid Terpolymer Films By Solvent Vapor Annealing
Dolan James A., Korzeb Karolina, Dehmel Raphael, Gödel Karl C., Stefik Morgan, Wiesner Ulrich, Wilkinson Timothy D., Baumberg Jeremy J., Wilts Bodo D., Steiner Ullrich, Gunkel Ilja
Small (2018)Clean Block Copolymer Microparticles from Supercritical CO2: Universal Templates for the Facile and Scalable Fabrication of Hierarchical Mesostructured Metal Oxides
Bennett Thomas M., He Guping, Larder Ryan R., Fischer Michael G., Rance Graham A., Fay Michael W., Pearce Amanda K., Parmenter Christopher D. J., Steiner Ullrich, Howdle Steven M.
Nano Letters (2018)Nature’s functional nanomaterials: Growth or self-assembly?
Wilts Bodo D., Clode Peta L., Patel Nipam H., Schröder-Turk Gerd E.
MRS Bulletin (2019)Processing Pathways Decide Polymer Properties at the Molecular Level
Chandran Sivasurender, Baschnagel Jörg, Cangialosi Daniele, Fukao Koji, Glynos Emmanouil, Janssen Liesbeth M. C., Müller Marcus, Muthukumar Murugappan, Steiner Ullrich, Xu Jun, Napolitano Simone, Reiter Günter
Macromolecules (2019)Visualizing Magnetic Structure in 3D Nanoscale Ni–Fe Gyroid Networks
Llandro Justin, Love David M., Kovács András, Caron Jan, Vyas Kunal N., Kákay Attila, Salikhov Ruslan, Lenz Kilian, Fassbender Jürgen, Scherer Maik R. J., Cimorra Christian, Steiner Ullrich, Barnes Crispin H. W., Dunin-Borkowski Rafal E., Fukami Shunsuke, Ohno Hideo
Nano Letters (2020)
- Related projects
Projects of ABDELRAHMAN Doha
Projects of ABDOLLAHI Narjes
Projects of GUNKEL Ilja