Paper
15 October 2012 Biopolymer-based dielectric materials for space environments
Fahima Ouchen, Donna M. Joyce, Narayanan Venkat, Steven R. Smith, Guru Subramanyam, Edward Taylor, James G. Grote
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Abstract
The potential of bio-dielectrics for space applications was explored using deoxyribonucleic acid (DNA)-based biopolymers. Un-doped DNA, as well as titanium dioxide (TiO2) nanoparticle (rutile form)-doped DNA were processed and evaluated. Characterized parameters were temperature stability, resistivity, dielectric constant, dielectric loss and radiation tolerance. The dielectric constant and dielectric loss of un-doped DNA and TiO2-doped DNA were measured for both pre- and post- exposure to approximately100 krad Gamma-ray radiation. There was little change in the dielectric constant and dielectric loss of the un-doped DNA sample with exposure to radiation. However, there was a significant reduction in the dielectric constant of the TiO2-doped DNA sample.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fahima Ouchen, Donna M. Joyce, Narayanan Venkat, Steven R. Smith, Guru Subramanyam, Edward Taylor, and James G. Grote "Biopolymer-based dielectric materials for space environments", Proc. SPIE 8519, Nanophotonics and Macrophotonics for Space Environments VI, 85190L (15 October 2012); https://doi.org/10.1117/12.942153
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KEYWORDS
Dielectrics

Titanium dioxide

Gamma radiation

Biopolymers

Ions

Electrodes

Nanoparticles

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