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Heavily loaded ferrite-polymer composites to produce high refractive index materials at centimetre wavelengths
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Parke, Laura, Hooper, Ian R., Hicken, Robert J., Dancer, Claire E. J., Grant, Patrick S., Youngs, Ian J., Sambles, Roy and Hibbins, Alaistair P. (2013) Heavily loaded ferrite-polymer composites to produce high refractive index materials at centimetre wavelengths. APL Materials, Volume 1 (Number 4). Article number 042108. doi:10.1063/1.4824039
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WRAP_Dancer_2013 Parke et al APL Materials.pdf - Published Version Available under License Creative Commons Attribution. Download (855Kb) | Preview |
Official URL: http://dx.doi.org/10.1063/1.4824039
Abstract
A cold-pressing technique has been developed for fabricating composites composed of a polytetrafluoroethylene-polymer matrix and a wide range of volume-fractions of MnZn-ferrite filler (0%–80%). The electromagnetic properties at centimetre wavelengths of all prepared composites exhibited good reproducibility, with the most heavily loaded composites possessing simultaneously high permittivity (180 ± 10) and permeability (23±2). The natural logarithm of both the relative complex permittivity and permeability shows an approximately linear dependence with the volume fraction of ferrite. Thus, this simple method allows for the manufacture of bespoke materials required in the design and construction of devices based on the principles of transformation optics.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QC Physics T Technology > TS Manufactures |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||
| Library of Congress Subject Headings (LCSH): | Ferrites (Magnetic materials) , Polymers , Manganese compounds , Refractive index, Zinc compounds, Permeability | ||||
| Journal or Publication Title: | APL Materials | ||||
| Publisher: | American Institute of Physics | ||||
| Official Date: | 4 April 2013 | ||||
| Dates: |
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| Volume: | Volume 1 | ||||
| Number: | Number 4 | ||||
| Page Range: | Article number 042108 | ||||
| DOI: | 10.1063/1.4824039 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||
| Date of first compliant deposit: | 25 December 2015 | ||||
| Date of first compliant Open Access: | 25 December 2015 | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Defence Science and Technology Laboratory (Great Britain), MagDev Limited | ||||
| Grant number: | EP/I034548/1 (EPSRC) |
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