公开(公告)号：WO2023278882A1

公开(公告)日：2023-01-05

申请号：PCT/US2022/036035

申请日：2022-07-01

Applicant: BREWER SCIENCE, INC.

Inventor： FURY, Jonathan J. ,  CAO, Xi ,  LANDORF, Christopher ,  CHEN, Zun ,  NEESON, Alec ,  BOWEN, Weston ,  PETERS, Austin

IPC: G01N27/414 ,  G01N27/30 ,  G01N27/333 ,  G01N33/18 ,  G01N27/02 ,  G01N27/4146 ,  G01N27/4148

Abstract: A carbon nanotube (CNT) ion-selective field effect transistor (IS-FET) integrated device is used to detect nitrate ion in water. The device is operated as an IS-FET sensor, holding the measured potential between the drain electrode and an external reference electrode constant with a potentiometric circuit. Transduction occurs by changes in the effective CNT film gate potential with changes in the phase boundary potential of an ion-selective membrane (ISM) film. Moreover, the nitrate ISM film makes the device highly selective towards nitrate sensing. This printable IS- FET nitrate sensor enables real-time and high-resolution measurements and recording of nitrate ion in water at low cost.

公开(公告)号：WO2021194952A2

公开(公告)日：2021-09-30

申请号：PCT/US2021/023450

申请日：2021-03-22

Applicant: BREWER SCIENCE, INC.

Inventor： CHEN, Zun ,  FURY, Jonathan J. ,  NEESON, Alec

IPC: C08L27/18 ,  C08J3/02 ,  C08F214/26 ,  C08F8/32 ,  C08F8/36 ,  C09D11/30 ,  C09D11/03 ,  B41M1/12 ,  B41M1/30 ,  B41M5/0023 ,  B41M5/0047 ,  B41M5/0064 ,  C08F214/184 ,  C08F214/262 ,  C08F2810/50 ,  C09D11/033 ,  C09D11/106 ,  C09D11/38 ,  C09D127/18

Abstract: A copolymer of polytetrafluoroethylene and a perfluoro acid (e.g., Nafion™) is neutralized by a base to yield its corresponding salt, and a high-boiling-point compatible solvent is used as a substituting solvent, with the original, low-boiling-point solvent being removed by rotor evaporation. The resulting dispersion is screen printable, and its viscosity is controllable by adjusting its solids content. This screen-printable salt dispersion is especially useful in printed electronics applications such as sensors.