The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Apr. 13, 2022
Regents of the University of Minnesota, Minneapolis, MN (US);
Steven Koester, Edina, MN (US);
Qun Su, Minneapolis, MN (US);
Philippe Pierre Joseph Buhlmann, Minneapolis, MN (US);
Xue Zhen, Plymouth Meeting, PA (US);
Justin Theodore Nelson, Vadnais Heights, MN (US);
Gregory J. Sherwood, White Bear Lake, MN (US);
REGENTS OF THE UNIVERSITY OF MINNESOTA, Minneapolis, MN (US);
Abstract
Embodiments herein relate to systems and methods for utilizing hysteresis as a mechanism of analysis of a sample. A system for analyzing a fluid sample is included having a controller circuit and a chemical sensor element. The chemical sensor element can include one or more discrete binding detectors that can include one or more graphene varactors. The system can include measurement circuitry having an electrical voltage generator configured to generate an applied voltage at a plurality of voltage values to be applied to the one or more graphene varactors. The system can include a measurement circuit having a capacitance sensor configured to measure capacitance of the discrete binding detectors resulting from the applied voltage. The system for analyzing the fluid sample can be configured to measure hysteresis effects related to capacitance versus voltage values obtained from the one or more graphene varactors. Other embodiments are also included herein.