Patents by Inventor Yeran BAI

Yeran BAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ultrafast chemical imaging by widefield photothermal sensing of infrared absorption
    Patent number: 12345635
    Abstract: Systems and methods for detecting photothermal effect in a sample are described herein. In these systems and methods, a pump source is configured to generate a pump pulse train, a probe source is configured to generate a probe pulse train and is synchronized with the pump pulse train, and a camera collects the resulting data. The camera is configured to collect a first signal corresponding to a hot frame, wherein the hot frame includes visible probe beam as modified by a pump beam and a second signal corresponding to a cold frame, wherein the cold frame includes visible probe beam that has not been modified by a pump beam. A processor can subtract the second signal from the first signal to detect the photothermal effect.
    Type: Grant
    Filed: November 16, 2023
    Date of Patent: July 1, 2025
    Assignee: Purdue Research Foundation
    Inventors: Ji-Xin Cheng, Yeran Bai, Delong Zhang, Ali Shakouri, D. Kerry Maize
  • ULTRAFAST CHEMICAL IMAGING BY WIDEFIELD PHOTOTHERMAL SENSING OF INFRARED ABSORPTION
    Publication number: 20240159667
    Abstract: Systems and methods for detecting photothermal effect in a sample are described herein. In these systems and methods, a pump source is configured to generate a pump pulse train, a probe source is configured to generate a probe pulse train and is synchronized with the pump pulse train, and a camera collects the resulting data. The camera is configured to collect a first signal corresponding to a hot frame, wherein the hot frame includes visible probe beam as modified by a pump beam and a second signal corresponding to a cold frame, wherein the cold frame includes visible probe beam that has not been modified by a pump beam. A processor can subtract the second signal from the first signal to detect the photothermal effect.
    Type: Application
    Filed: November 16, 2023
    Publication date: May 16, 2024
    Inventors: Ji-Xin CHENG, Yeran BAI, Delong ZHANG, Ali SHAKOURI, D. Kerry MAIZE
  • Ultrafast chemical imaging by widefield photothermal sensing of infrared absorption
    Patent number: 11867620
    Abstract: Systems and methods for detecting photothermal effect in a sample are described herein. In these systems and methods, a pump source is configured to generate a pump pulse train, a probe source is configured to generate a probe pulse train and is synchronized with the pump pulse train, and a camera collects the resulting data. The camera is configured to collect a first signal corresponding to a hot frame, wherein the hot frame includes visible probe beam as modified by a pump beam and a second signal corresponding to a cold frame, wherein the cold frame includes visible probe beam that has not been modified by a pump beam. A processor can subtract the second signal from the first signal to detect the photothermal effect.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: January 9, 2024
    Assignee: Purdue Research Foundation
    Inventors: Ji-Xin Cheng, Yeran Bai, Delong Zhang, Ali Shakouri, D. Kerry Maize
  • ULTRAFAST CHEMICAL IMAGING BY WIDEFIELD PHOTOTHERMAL SENSING OF INFRARED ABSORPTION
    Publication number: 20220381684
    Abstract: Systems and methods for detecting photothermal effect in a sample are described herein. In these systems and methods, a pump source is configured to generate a pump pulse train, a probe source is configured to generate a probe pulse train and is synchronized with the pump pulse train, and a camera collects the resulting data. The camera is configured to collect a first signal corresponding to a hot frame, wherein the hot frame includes visible probe beam as modified by a pump beam and a second signal corresponding to a cold frame, wherein the cold frame includes visible probe beam that has not been modified by a pump beam. A processor can subtract the second signal from the first signal to detect the photothermal effect.
    Type: Application
    Filed: December 10, 2019
    Publication date: December 1, 2022
    Inventors: Ji-Xin CHENG, Yeran BAI, Delong ZHANG, Ali SHAKOURI, D. Kerry MAIZE