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Materials 2015, 8(5), 2054-2061;

Fabrication of Diamond Based Sensors for Use in Extreme Environments

Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
Author to whom correspondence should be addressed.
Academic Editor: Dusan Losic
Received: 12 March 2015 / Revised: 13 April 2015 / Accepted: 21 April 2015 / Published: 23 April 2015
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Electrical and magnetic sensors can be lithographically fabricated on top of diamond substrates and encapsulated in a protective layer of chemical vapor deposited single crystalline diamond. This process when carried out on single crystal diamond anvils employed in high pressure research is termed as designer diamond anvil fabrication. These designer diamond anvils allow researchers to study electrical and magnetic properties of materials under extreme conditions without any possibility of damaging the sensing elements. We describe a novel method for the fabrication of designer diamond anvils with the use of maskless lithography and chemical vapor deposition in this paper. This method can be utilized to produce diamond based sensors which can function in extreme environments of high pressures, high and low temperatures, corrosive and high radiation conditions. We demonstrate applicability of these diamonds under extreme environments by performing electrical resistance measurements during superconducting transition in rare earth doped iron-based compounds under high pressures to 12 GPa and low temperatures to 10 K. View Full-Text
Keywords: diamond anvils; chemical vapor deposition; superconductor; diamond based sensors diamond anvils; chemical vapor deposition; superconductor; diamond based sensors

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Samudrala, G.K.; Moore, S.L.; Vohra, Y.K. Fabrication of Diamond Based Sensors for Use in Extreme Environments. Materials 2015, 8, 2054-2061.

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