公开(公告)号：US20240019398A1

公开(公告)日：2024-01-18

申请号：US18372558

申请日：2023-09-25

Applicant: UNIVERSITY OF HOUSTON SYSTEM

Inventor： Dmitri Litvinov ,  Long Chang ,  Richard Willson

IPC: G01N27/74 ,  G01N33/543

CPC classification number: G01N27/745 ,  G01N33/54326 ,  G01N33/54346 ,  G01N33/54373

Abstract: A biosensor may provide a magnetoresistive (MR) film comprising a nonmagnetic layer may be sandwiched between the two ferromagnetic layers. The MR film may be positioned on a substrate, where the edges of the MR film are in contact with leads. The leads may be in contact with pads. The sensors may provide quasi-digital readout that enable greatly enhanced sensitivity. In some embodiments, biosensors may be arranged as array of sensors. The array of sensors may be arranged as a symmetric or asymmetric N1×N2 array, where N1 and N2 are integers, N1 represents the number of sensors linked together in series, and N2 represents the number of sensor sets in parallel, where each sensor set may comprise one or more sensors. Further, the array of sensors may be coupled to a voltmeter, which may be a single voltmeter in that allows the sensors to all be probed simultaneously.

公开(公告)号：US11821818B2

公开(公告)日：2023-11-21

申请号：US16624643

申请日：2018-07-06

Applicant: University of Houston System

Inventor： Dmitri Litvinov ,  Long Chang ,  Richard Willson

IPC: G01N27/74 ,  G01N33/543

CPC classification number: G01N27/745 ,  G01N33/54326 ,  G01N33/54346 ,  G01N33/54373

Abstract: A biosensor may provide a magnetoresistive (MR) film comprising a nonmagnetic layer may be sandwiched between the two ferromagnetic layers. The MR film may be positioned on a substrate, where the edges of the MR film are in contact with leads. Additionally, the leads may be in contact with pads. The sensors may provide quasi-digital readout that enable greatly enhanced sensitivity. In some embodiments, biosensors may be arranged as array of sensors. The array of sensors may be arranged as a symmetric or asymmetric N1×N2 array, where N1 and N2 are integers, N1 represents the number of sensors linked together in series, and N2 represents the number of sensor sets in parallel, where each sensor set may comprise one or more sensors. Further, the array of sensors may be coupled to a voltmeter, which may be a single voltmeter in some cases that allows the sensors to all be probed simultaneously.