Patents by Inventor Linmao QIAN

Linmao QIAN 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).

  • Numerically controlled rotary probe switching device based on environment-controllable atomic force microscope
    Patent number: 10739377
    Abstract: A numerically controlled rotary probe switching device based on an environment-controllable atomic force microscope (AFM) includes a cavity upper cover and a probe switching structure. The cavity upper cover is provided with an irregular rectangular boss, an inner groove, a rectangular optical window structure and a sealing flange structure. The irregular rectangular boss is provided with the rectangular optical window structure; a front end of the boss is provided with the sealing flange structure; and a lower portion of the boss is provided with an inner groove for accommodating the probe switching structure and a transition groove for matching with a linear movement of a sample carrier and a rotary switching of probes. The probe switching structure is configured inside the inner groove, and the probe switching structure is provided with at least one probe assembly.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: August 11, 2020
    Assignees: Southwest Jiaotong University, Tsinghua University
    Inventors: Liang Jiang, Linmao Qian, Jianbin Luo, Bin Lin, Yushan Chen
  • Methods for designing and processing a microcantilever-based probe with an irregular cross section applied in an ultra-low friction coefficient measurement at a nanoscale single-point contact
    Patent number: 10739379
    Abstract: A method for designing and processing a microcantilever-based probe with an irregular cross section applied in the ultra-low friction coefficient measurement at a nanoscale single-point contact includes: first, establishing a universal theoretical model of the friction coefficient measurement; then, combined with the structural features of the microcantilever-based probe with the irregular cross section, establishing a specific theoretical model of the friction coefficient measurement suitable for the microcantilever-based probe with the irregular cross section; and based on above, combined with constraint conditions such as the friction coefficient resolution, the loadable maximum positive pressure or the measurable minimum friction force, and the atomic force microscope characteristics, etc., designing the microcantilever-based probe with the irregular cross section meeting the measurement requirements.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: August 11, 2020
    Assignees: Southwest Jiaotong University, Tsinghua University
    Inventors: Linmao Qian, Liang Jiang, Bin Lin, Jianbin Luo, Yushan Chen, Bin Li
  • Numerically Controlled Rotary Probe Switching Device Based on Environment-Controllable Atomic Force Microscope
    Publication number: 20200096539
    Abstract: A numerically controlled rotary probe switching device based on an environment-controllable atomic force microscope (AFM) includes a cavity upper cover and a probe switching structure. The cavity upper cover is provided with an irregular rectangular boss, an inner groove, a rectangular optical window structure and a sealing flange structure. The irregular rectangular boss is provided with the rectangular optical window structure; a front end of the boss is provided with the sealing flange structure; and a lower portion of the boss is provided with an inner groove for accommodating the probe switching structure and a transition groove for matching with a linear movement of a sample carrier and a rotary switching of probes. The probe switching structure is configured inside the inner groove, and the probe switching structure is provided with at least one probe assembly.
    Type: Application
    Filed: January 11, 2019
    Publication date: March 26, 2020
    Applicant: Southwest Jiaotong University
    Inventors: Liang JIANG, Linmao QIAN, Bin LIN, Yushan CHEN
  • METHODS FOR DESIGNING AND PROCESSING A MICROCANTILEVER-BASED PROBE WITH AN IRREGULAR CROSS SECTION APPLIED IN AN ULTRA-LOW FRICTION COEFFICIENT MEASUREMENT AT A NANOSCALE SINGLE-POINT CONTACT
    Publication number: 20190204353
    Abstract: A method for designing and processing a microcantilever-based probe with an irregular cross section applied in the ultra-low friction coefficient measurement at a nanoscale single-point contact includes: first, establishing a universal theoretical model of the friction coefficient measurement; then, combined with the structural features of the microcantilever-based probe with the irregular cross section, establishing a specific theoretical model of the friction coefficient measurement suitable for the microcantilever-based probe with the irregular cross section; and based on above, combined with constraint conditions such as the friction coefficient resolution, the loadable maximum positive pressure or the measurable minimum friction force, and the atomic force microscope characteristics, etc., designing the microcantilever-based probe with the irregular cross section meeting the measurement requirements.
    Type: Application
    Filed: March 4, 2019
    Publication date: July 4, 2019
    Applicant: Southwest Jiaotong University
    Inventors: Linmao QIAN, Liang JIANG, Bin LIN, Jianbin LUO