US 12,405,238 B2
Ultrasensitive, ultrathin vapor sensors and arrays
Otto J. Gregory, Narragansett, RI (US); and Peter P. Ricci, West Warwick, RI (US)
Assigned to Trace Sensing Technologies Inc., Wallingford, CT (US)
Filed by Trace Sensing Technologies Inc., Wallingford, CT (US)
Filed on Apr. 20, 2022, as Appl. No. 17/659,909.
Application 17/659,909 is a continuation in part of application No. 17/356,392, filed on Jun. 23, 2021, granted, now 11,340,183.
Prior Publication US 2022/0412905 A1, Dec. 29, 2022
Int. Cl. G01N 25/48 (2006.01); A61B 5/00 (2006.01); G01N 33/497 (2006.01)
CPC G01N 25/488 (2013.01) [A61B 5/6833 (2013.01); G01N 33/4975 (2024.05)] 21 Claims
OG exemplary drawing
 
1. A detection device comprising:
a first sensor comprising a first microheater and a first catalyst in contact with the first microheater;
a second sensor comprising a second microheater;
a controller in electrical communication with the first sensor and the second sensor, the controller configured to:
cause power to be provided to the first and second sensors to heat the first sensor to a first setpoint temperature and to heat the second sensor to a second setpoint temperature;
vary power applied to the first sensor and/or the second sensor to account for a thermal response caused by reactions between an analyte and the first catalyst to maintain the first setpoint temperature and the second setpoint temperature; and
determine an existence, identity, and/or concentration of the analyte based on the varied the power.