Fabrication of Diamond Based Sensors for Use in Extreme Environments

Materials

Gopi K. Samudrala¹  Samuel L. Moore²  Yogesh K. Vohra² 

[1] Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294, USA;

关键词: diamond anvils;    chemical vapor deposition;    superconductor;    diamond based sensors;   

DOI  :  10.3390/ma8052054

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.