Switchable optical transmittance of TiO2 submicron-diameter wire suspension-based 'smart window' device
| Autor: | Kristjan Saal, Silver Leinberg, Rünno Lõhmus, Martin Timusk, Vambola Kisand, Urmas Joost, Ergo Nõmmiste, Andris Šutka |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Polydimethylsiloxane business.industry Organic Chemistry Nanowire Nanotechnology Electro-optics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Active layer Inorganic Chemistry chemistry.chemical_compound Planar chemistry Electrode Transmittance Optoelectronics Electrical and Electronic Engineering Physical and Theoretical Chemistry Suspension (vehicle) business Spectroscopy |
| Zdroj: | Optical Materials. 46:418-422 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2015.04.057 |
| Popis: | In this paper, for the first time, a TiO 2 submicron-diameter wire suspension-based smart window device is demonstrated in which combined planar and finger electrodes are utilised to reversibly change the orientation of the nanowires. Electrospun TiO 2 anatase submicron-diameter wire suspensions in a viscous polydimethylsiloxane (PDMS) matrix were prepared directly from electrospun submicron-diameter fibre mats by using high-shear mixing, achieving the complete break-up of all electrospun mats and suspending TiO 2 submicron-diameter wires uniformly in the PDMS matrix. Suspension was used as an active layer in an electro-optical device where a reversible change in light scattering is achieved by preparing a device consisting of an active layer and combined planar and finger electrode system. Using the constructed device, it was possible to change the alignment or spatial distribution of TiO 2 submicron-diameter wires by applying a DC electric field across the planar or finger, electrodes thus changing the transmittance (Δ T = 25%) of the suspension and demonstrating the potential to use combined planar and finger electrode devices in smart window applications. |
| Databáze: | OpenAIRE |
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