公开(公告)号：US20200209135A1

公开(公告)日：2020-07-02

申请号：US16234597

申请日：2018-12-28

Applicant: National Applied Research Laboratories

Inventor： I-Fang Cheng ,  Tzu-Ying Chen ,  Yi-Ling Chen

IPC: G01N15/06 ,  C12Q1/18

Abstract: A photoelectrical device for detection of bacterial cell density includes a substrate, a driving electrode layer, an AC power source and a photoelectric conversion layer. The driving electrode layer is disposed on the substrate and includes a central electrode and a peripheral electrode pattern surrounding the central electrode. A fluid sample is disposed on the driving electrode layer. The AC power source is electrically connected to the driving electrode layer, and used to produce a non-uniform alternating electric field in the fluid sample on the driving electrode layer for driving the target bioparticles to gather up on the central electrode to form a particle cluster. The photoelectric conversion layer is used for receiving a light detecting beam after passing through the particle cluster and outputting an electric current based on the optical density of light detecting beam. The electric current changes as a concentration of the target bioparticles changes.

公开(公告)号：US11143585B2

公开(公告)日：2021-10-12

申请号：US16234597

申请日：2018-12-28

Applicant: National Applied Research Laboratories

Inventor： I-Fang Cheng ,  Tzu-Ying Chen ,  Yi-Ling Chen

IPC: B03C7/02 ,  B03C7/00 ,  B03C5/02 ,  B03C5/00 ,  G01N15/06 ,  C12Q1/18

Abstract: A photoelectrical device for detection of bacterial cell density includes a substrate, a driving electrode layer, an AC power source and a photoelectric conversion layer. The driving electrode layer is disposed on the substrate and includes a central electrode and a peripheral electrode pattern surrounding the central electrode. A fluid sample is disposed on the driving electrode layer. The AC power source is electrically connected to the driving electrode layer, and used to produce a non-uniform alternating electric field in the fluid sample on the driving electrode layer for driving the target bioparticles to gather up on the central electrode to form a particle cluster. The photoelectric conversion layer is used for receiving a light detecting beam after passing through the particle cluster and outputting an electric current based on the optical density of light detecting beam. The electric current changes as a concentration of the target bioparticles changes.