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公开(公告)号：US20220236484A1
公开(公告)日：2022-07-28
申请号：US17584745
申请日：2022-01-26
发明人： Yuxiang Liu , Pratap Rao , Yundong Ren , Mucheng Li
摘要： A fiber optic sensing device includes an optical fiber having a polished end defining a flat sensory portion coated with a lossy-mode-resonance (LMR) coating. A reflective coating on an end face of the optical fiber facilitates propagation of a return signal. An optic circuit for identifies a wavelength attenuated by the LMR coating from the return signal reflected by the reflective coating based on a moisture presence at the sensory portion. Various gaseous parameters may be detected based on the coating on the sensory portion. An LMR coating of tin oxide (SnO2) is employed for moisture sensing.
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公开(公告)号：US20220238246A1
公开(公告)日：2022-07-28
申请号：US17585056
申请日：2022-01-26
发明人： Yuxiang Liu , Chaoyang Ti , Qi Wen
IPC分类号： G21K1/00
摘要： A fiber optic based particle manipulation system employs one or more optical fibers for emanating a refracted optical manipulation signal directed at a target particle for fixing or manipulating the particle for examination, research and manufacturing. A target particle may be a living cell or inanimate sample or compound of matter. An alignment linkage controls optical fibers carrying the manipulation signal for focusing one or more manipulation signals on the target particle. Manipulated particles occupy a fluid medium of either liquid or gas, and are responsive to the manipulation signal based on both photon bombardment and temperature differential from photon contact. The temperature differential is based on surface properties of the target particle, as smooth particles tend to exhibit a greater thermal differential for stronger displacement forces driving or affecting the target particle.
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公开(公告)号：US12055381B2
公开(公告)日：2024-08-06
申请号：US17669042
申请日：2022-02-10
发明人： Yuxiang Liu , Hamed Jafarishad , Mucheng Li
IPC分类号： G01B11/16
CPC分类号： G01B11/16
摘要： A strain gauge device employs a reflective base adapted to reflect a divergent optical signal, and a glass tube attached to the reflective base for optical communication therewith, the glass tube having a working length into which an optical fiber is inserted. The optical fiber is configured for transporting an optic signal indicative of the detected strain. The optic fiber has an outside diameter slightly smaller than an inside diameter of the glass tube for providing a slight tolerance. A distal end is disposed in slidable communication with an interior of the glass tube and accommodated by the tolerance, and a sensing circuit at the proximate end receives an optical signal indicative of strain or displacement. A resilient buffer layer made of soft silicone is disposed outside the glass tube to allow for large deformation measurements and reduce the distortion of the deformation by the introduction of the sensor.
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公开(公告)号：US11961626B2
公开(公告)日：2024-04-16
申请号：US17585056
申请日：2022-01-26
发明人： Yuxiang Liu , Chaoyang Ti , Qi Wen
摘要： A fiber optic based particle manipulation system employs one or more optical fibers for emanating a refracted optical manipulation signal directed at a target particle for fixing or manipulating the particle for examination, research and manufacturing. A target particle may be a living cell or inanimate sample or compound of matter. An alignment linkage controls optical fibers carrying the manipulation signal for focusing one or more manipulation signals on the target particle. Manipulated particles occupy a fluid medium of either liquid or gas, and are responsive to the manipulation signal based on both photon bombardment and temperature differential from photon contact. The temperature differential is based on surface properties of the target particle, as smooth particles tend to exhibit a greater thermal differential for stronger displacement forces driving or affecting the target particle.
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公开(公告)号：US20220252388A1
公开(公告)日：2022-08-11
申请号：US17669042
申请日：2022-02-10
发明人： Yuxiang Liu , Hamed Jafarishad , Mucheng Li
IPC分类号： G01B11/16
摘要： A strain gauge device employs a reflective base adapted to reflect a divergent optical signal, and a glass tube attached to the reflective base for optical communication therewith, the glass tube having a working length into which an optical fiber is inserted. The optical fiber is configured for transporting an optic signal indicative of the detected strain. The optic fiber has an outside diameter slightly smaller than an inside diameter of the glass tube for providing a slight tolerance. A distal end is disposed in slidable communication with an interior of the glass tube and accommodated by the tolerance, and a sensing circuit at the proximate end receives an optical signal indicative of strain or displacement. A resilient buffer layer made of soft silicone is disposed outside the glass tube to allow for large deformation measurements and reduce the distortion of the deformation by the introduction of the sensor.
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公开(公告)号：US11668873B2
公开(公告)日：2023-06-06
申请号：US17584745
申请日：2022-01-26
发明人： Yuxiang Liu , Pratap Rao , Yundong Ren , Mucheng Li
CPC分类号： G02B6/12007 , G02B6/021 , G02B6/3512 , G02B6/4214
摘要： A fiber optic sensing device includes an optical fiber having a polished end defining a flat sensory portion coated with a lossy-mode-resonance (LMR) coating. A reflective coating on an end face of the optical fiber facilitates propagation of a return signal. An optic circuit for identifies a wavelength attenuated by the LMR coating from the return signal reflected by the reflective coating based on a moisture presence at the sensory portion. Various gaseous parameters may be detected based on the coating on the sensory portion. An LMR coating of tin oxide (SnO2) is employed for moisture sensing.
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