US 12,066,404 B2
Chemical sensing systems and methods
Luke Armitage Beardslee, Atlanta, GA (US); Oliver Brand, Atlanta, GA (US); Kemal Safak Demirci, Atlanta, GA (US); Jae Hyeong Seo, Atlanta, GA (US); and Steven Andrew Schwartz, Atlanta, GA (US)
Assigned to Georgia Tech Research Corporation, Atlanta, GA (US)
Filed by Georgia Tech Research Corporation, Atlanta, GA (US)
Filed on Jun. 5, 2023, as Appl. No. 18/205,912.
Application 18/205,912 is a continuation of application No. 17/772,802, previously published as PCT/US2020/057724, filed on Oct. 28, 2020.
Claims priority of provisional application 63/348,704, filed on Jun. 3, 2022.
Claims priority of provisional application 62/926,811, filed on Oct. 28, 2019.
Prior Publication US 2023/0324340 A1, Oct. 12, 2023
Int. Cl. G01N 29/02 (2006.01); G01N 27/22 (2006.01); G01N 29/036 (2006.01)
CPC G01N 29/022 (2013.01) [G01N 27/221 (2013.01); G01N 27/227 (2013.01); G01N 29/036 (2013.01); G01N 2291/022 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting an unknown analyte, the method comprising:
contacting the unknown analyte with a sensor in communication with a circuit and a microcontroller;
adsorbing or absorbing the unknown analyte on the sensor to cause (i) a change in a gravimetric property of the sensor and (ii) a change in an impedimetric property of the sensor;
generating, in response to the change in the gravimetric property and the change in the impedimetric property, a transient response time defined by a time taken the sensor to achieve 90% of a steady-state response, the transient response time indicative of one or more characteristics of the unknown analyte; and
determining a chemical composition and a concentration of the unknown analyte based on the one or more characteristics.