Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Large-Area YBa2Cu3O7-x Bolometers on Si Substrates



Leila R. Vale, Ronald H. Ono, Donald G. McDonald, Robert J. Phelan


We have developed YBa2Cu3O7-x (YBCO) thermometers for large-area (4 mm x 4 mm) electrical substitution bolometers. We passivated the YBCO with a thin Au layer and demonstrated a noise equivalent temperature of 4 nK Hz-1/2. We then used a resistor layer of NiCr alloy deposited directly on the thermometer to perform optical measurements of the bolometer in the cryostat. Optical measurements show an electrical noise equivalent power of 87 pW Hz-1/2 with a large thermal conductance of 1.87 x 10-3 W K-1. these thermometers may be used as a real-time measurement radiometer.
Superconductor Science and Technology


noise equivalent temperature, YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> (YBCO) thermometers


Vale, L. , Ono, R. , McDonald, D. and Phelan, R. (1999), Large-Area YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> Bolometers on Si Substrates, Superconductor Science and Technology (Accessed July 13, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created December 30, 1999, Updated October 12, 2021