公开(公告)号：US11443930B2

公开(公告)日：2022-09-13

申请号：US16889700

申请日：2020-06-01

Applicant: Brigham Young University

Inventor： Yixin Song ,  Shiuh-hua Wood Chiang ,  Aaron R. Hawkins ,  Daniel E. Austin

IPC: H01J49/02 ,  G01R29/24 ,  H03F3/45 ,  H03G3/30 ,  H03F3/70

Abstract: The present invention is a system and method for providing a charge detector that utilizes small feedback capacitors in a low-noise, high-gain, system that combines a differential topology in a solid-state amplifier implemented in a complementary metal-oxide semiconductor (CMOS) process with active reset, thereby achieving high dynamic range and robust operations. A custom optoelectronic system is used to measure gain, and while operating at a sampling frequency of 10 kHz, the active reset extends the dynamic range of the charge detector.

公开(公告)号：US20210050200A1

公开(公告)日：2021-02-18

申请号：US16889700

申请日：2020-06-01

Applicant: Brigham Young University

Inventor： Yixin Song ,  Shiuh-hua Wood Chiang ,  Aaron R. Hawkins ,  Daniel E. Austin

IPC: H01J49/02 ,  G01R29/24 ,  H03F3/45 ,  H03F3/70 ,  H03G3/30

Abstract: The present invention is a system and method for providing a charge detector that utilizes small feedback capacitors in a low-noise, high-gain, system that combines a differential topology in a solid-state amplifier implemented in a complementary metal-oxide semiconductor (CMOS) process with active reset, thereby achieving high dynamic range and robust operations. A custom optoelectronic system is used to measure gain, and while operating at a sampling frequency of 10 kHz, the active reset extends the dynamic range of the charge detector.

公开(公告)号：US09678046B2

公开(公告)日：2017-06-13

申请号：US14488013

申请日：2014-09-16

Applicant: BRIGHAM YOUNG UNIVERSITY

Inventor： H. Dennis Tolley ,  Anzi Wang ,  Samuel E. Tolley ,  Milton L. Lee ,  Aaron R. Hawkins

IPC: G01N30/30 ,  G01N30/60

CPC classification number: G01N30/30 ,  G01N30/6095 ,  G01N2030/3015

Abstract: A system and method for thermal gradient gas chromatography wherein a front or injection end of a column is heated to a higher temperature than a back or detector end to thereby create a thermal gradient having a profile that is substantially monotonically non-increasing and has a positive second derivative, and then providing a heat source to raise the thermal gradient and cause it to remain stationary or to travel through the column while maintaining a desired profile.