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1. 发明授权

US07856866B2 Method of operating an atomic force microscope in tapping mode with a reduced impact force 有权
标题翻译：在冲击力较小的攻丝方式下操作原子力显微镜的方法
公开(公告)号：US07856866B2
公开(公告)日：2010-12-28
申请号：US11851110
申请日：2007-09-06
申请人： Andrew James Dick , Balakumar Balachandran , Hiroshi Yabuno , Masatoshi Numatsu , Keiichi Hayashi , Masaharu Kuroda , Kiwamu Ashida
发明人： Andrew James Dick , Balakumar Balachandran , Hiroshi Yabuno , Masatoshi Numatsu , Keiichi Hayashi , Masaharu Kuroda , Kiwamu Ashida
IPC分类号： G01B5/28
CPC分类号： G01Q60/34
摘要： In a tapping mode Atomic Force Microscope (AFM) system, a probe is excited at an excitation frequency other than the probe's first natural frequency to produce a response signal manifesting a grazing bifurcation between “non-collision” and “collision” states of the AFM system, so that an additional characteristic frequency component is generated in the “collision” state. The magnitude of the additional characteristic frequency component is monitored in real time, and the probe-sample separation is adjusted to maintain the monitored magnitude at an optimal value to operate the AFM system at near-grazing conditions.
摘要翻译：在轻敲模式原子力显微镜（AFM）系统中，探头以除探头第一固有频率之外的激发频率激发，产生一个响应信号，表现出AFM的“非碰撞”和“碰撞”状态之间的放牧分叉系统，使得在“碰撞”状态下产生附加的特征频率分量。实时监测附加特征频率分量的幅度，并调整探针样品分离，以将监测的幅度保持在最佳值，以在近放牧条件下操作AFM系统。

2. 发明授权

US06901176B2 Fiber tip based sensor system for acoustic measurements 失效
标题翻译：用于声学测量的基于光纤尖端的传感器系统
公开(公告)号：US06901176B2
公开(公告)日：2005-05-31
申请号：US10270277
申请日：2002-10-15
申请人： Balakumar Balachandran , Miao Yu , Moustafa Al-Bassyiouni
发明人： Balakumar Balachandran , Miao Yu , Moustafa Al-Bassyiouni
IPC分类号： G01D5/353 , G01H9/00 , G02B6/34 , G01B9/02
CPC分类号： G02B6/4246 , G01D5/35303 , G01H9/006 , G02B6/2935 , G02B6/29358
摘要： A fiber optic sensor system for acoustic measurements over a 6 kHz bandwidth, the design of which allows for multiplexity of the input side of the system, and where the optical part of the system is based on low coherence fiber-optic interferometry techniques which has a sensor Fabry-Perot interferometer and a read-out interferometer as well, that allows a high dynamic range and low sensitivity to the wavelength fluctuation of the light source, as well as the optical intensity fluctuations. A phase modulation and demodulation scheme takes advantage of the Integrated Optical Circuit phase modulator and multi-step phase-stepping algorithm for providing for high frequency and real time phase signal demodulation. The system includes fiber tip based Fabry-Perot sensors which have a diaphragm, which is used as the transducer. Pressure microphone, velocity sensor, as well as accelerometer, are built based on the fiber tip based Fabry-Perot sensors.
摘要翻译：一种用于6kHz带宽上的声学测量的光纤传感器系统，其设计允许系统的输入侧的多路复用，并且系统的光学部分基于低相干光纤干涉测量技术，其中具有传感器法布里 - 珀罗干涉仪和读出干涉仪，其允许对光源的波长波动的高动态范围和低灵敏度以及光强度波动。相位调制和解调方案利用集成光电相位调制器和多步相位步进算法提供高频和实时相位信号解调。该系统包括具有膜片的基于纤维末端的法布里 - 珀罗传感器，其用作换能器。压力麦克风，速度传感器以及加速度计是基于基于光纤头的Fabry-Perot传感器构建的。

3. 发明申请

US20050157305A1 Micro-optical sensor system for pressure, acceleration, and pressure gradient measurements 失效
标题翻译：用于压力，加速和压力梯度测量的微光学传感器系统
公开(公告)号：US20050157305A1
公开(公告)日：2005-07-21
申请号：US11038156
申请日：2005-01-21
申请人： Miao Yu , Balakumar Balachandran
发明人： Miao Yu , Balakumar Balachandran
IPC分类号： G01D5/353 , G01H9/00 , G02B6/34 , G01B9/02
CPC分类号： G01H9/006 , G01D5/35303 , G02B6/2935 , G02B6/29358
摘要： A micro-optical fiber tip based sensor system for pressure, acceleration, and pressure gradient measurements in a wide bandwidth, the design of which allows for multiplexity of the input side of the system is based on micro-electromechanical fabrication techniques. The optical portion of the system is based on low coherence fiber-optic interferometry techniques which has a sensor Fabry-Perot interferometer and a read-out interferometer combination that allows a high dynamic range and low sensitivity to the wavelength fluctuation of the light source. A phase modulation and demodulation scheme takes advantage of the Integrated Optical Circuit phase modulator and multi-step phase-stepping algorithm for providing high frequency and real time phase signal demodulation. The system includes fiber tip based Fabry-Perot sensors each of which has a diaphragm that is used as a transducer.
摘要翻译：用于在宽带宽中的压力，加速度和压力梯度测量的基于微光纤端头的传感器系统，其设计允许系统的输入侧的多路复用基于微机电制造技术。系统的光学部分基于低相干光纤干涉测量技术，其具有传感器法布里 - 珀罗干涉仪和读出干涉仪组合，其允许对光源的波长波动具有高动态范围和低灵敏度。相位调制和解调方案利用集成光电相位调制器和多步相位步进算法提供高频和实时相位信号解调。该系统包括基于光纤头的Fabry-Perot传感器，每个传感器都具有用作传感器的隔膜。

4. 发明授权

US07224465B2 Fiber tip based sensor system for measurements of pressure gradient, air particle velocity and acoustic intensity 有权
标题翻译：用于测量压力梯度，空气粒子速度和声强度的基于纤维尖端的传感器系统
公开(公告)号：US07224465B2
公开(公告)日：2007-05-29
申请号：US11038093
申请日：2005-01-21
申请人： Balakumar Balachandran , Moustafa Al-Bassyiouni , Miao Yu
发明人： Balakumar Balachandran , Moustafa Al-Bassyiouni , Miao Yu
IPC分类号： G01B9/02
CPC分类号： G01H9/006 , G01D5/35303 , G02B6/29358
摘要： A fiber optic sensor system for pressure measurements where the design permits multiplexity on the input side of the system and the optical part of the system, which has a sensor Fabry-Perot interferometer and a read-out interferometer, is based on low coherence fiber-optic interferometry techniques. This permits a high dynamic range and low sensitivity to the wavelength fluctuation of the light source as well as to the optical intensity fluctuations. The system includes fiber tip based Fabry-Perot sensors, where each sensor includes a diaphragm as the transducer. A combined pressure gradient sensor, air particle velocity sensor, as well as acoustic intensity sensor is built based on the fiber tip based Fabry-Perot sensors.
摘要翻译：用于压力测量的光纤传感器系统，其中设计允许系统输入侧的多路复用和具有传感器法布里 - 珀罗干涉仪和读出干涉仪的系统的光学部件基于低相干光纤 - 光学干涉测量技术。这允许对光源的波长波动以及光强度波动的高动态范围和低灵敏度。该系统包括基于光纤头的Fabry-Perot传感器，其中每个传感器包括一个隔膜作为传感器。基于光纤头的法布里 - 珀罗传感器构建了组合的压力梯度传感器，空气粒子速度传感器以及声强度传感器。

5. 发明申请

US20050146726A1 Fiber tip based sensor system for measurements of pressure gradient, air particle velocity and acoustic intensity 有权
标题翻译：用于测量压力梯度，空气粒子速度和声强度的基于纤维尖端的传感器系统
公开(公告)号：US20050146726A1
公开(公告)日：2005-07-07
申请号：US11038093
申请日：2005-01-21
申请人： Balakumar Balachandran , Moustafa Al-Bassyiouni , Miao Yu
发明人： Balakumar Balachandran , Moustafa Al-Bassyiouni , Miao Yu
IPC分类号： G01D5/353 , G01H9/00 , G02B6/34 , G01B9/02
CPC分类号： G01H9/006 , G01D5/35303 , G02B6/29358
摘要： A fiber optic sensor system for pressure measurements where the design permits multiplexity on the input side of the system and the optical part of the system, which has a sensor Fabry-Perot interferometer and a read-out interferometer, is based on low coherence fiber-optic interferometry techniques. This permits a high dynamic range and low sensitivity to the wavelength fluctuation of the light source as well as to the optical intensity fluctuations. The system includes fiber tip based Fabry-Perot sensors, where each sensor includes a diaphragm as the transducer. A combined pressure gradient sensor, air particle velocity sensor, as well as acoustic intensity sensor is built based on the fiber tip based Fabry-Perot sensors.
摘要翻译：用于压力测量的光纤传感器系统，其中设计允许系统输入侧的多路复用和具有传感器法布里 - 珀罗干涉仪和读出干涉仪的系统的光学部件基于低相干光纤 - 光学干涉测量技术。这允许对光源的波长波动以及光强度波动的高动态范围和低灵敏度。该系统包括基于光纤头的Fabry-Perot传感器，其中每个传感器包括一个隔膜作为传感器。基于光纤头的法布里 - 珀罗传感器构建了组合的压力梯度传感器，空气粒子速度传感器以及声强度传感器。

6. 发明申请

US20090064771A1 METHOD OF OPERATING AN ATOMIC FORCE MICROSCOPE IN TAPPING MODE WITH A REDUCED IMPACT FORCE 有权
标题翻译：在具有减少冲击力的打击模式下操作原子力显微镜的方法
公开(公告)号：US20090064771A1
公开(公告)日：2009-03-12
申请号：US11851110
申请日：2007-09-06
申请人： Andrew James Dick , Balakumar Balachandran , Hiroshi Yabuno , Masatoshi Numatsu , Keiichi Hayashi , Masaharu Kuroda , Kiwamu Ashida
发明人： Andrew James Dick , Balakumar Balachandran , Hiroshi Yabuno , Masatoshi Numatsu , Keiichi Hayashi , Masaharu Kuroda , Kiwamu Ashida
IPC分类号： G12B21/08
CPC分类号： G01Q60/34
摘要： In a tapping mode Atomic Force Microscope (AFM) system, a probe is excited at an excitation frequency other than the probe's first natural frequency to produce a response signal manifesting a grazing bifurcation between “non-collision” and “collision” states of the AFM system, so that an additional characteristic frequency component is generated in the “collision” state. The magnitude of the additional characteristic frequency component is monitored in real time, and the probe-sample separation is adjusted to maintain the monitored magnitude at an optimal value to operate the AFM system at near-grazing conditions.
摘要翻译：在轻敲模式原子力显微镜（AFM）系统中，探头以除探头第一固有频率之外的激发频率激发，产生一个响应信号，表现出AFM的“非碰撞”和“碰撞”状态之间的放牧分叉系统，使得在“碰撞”状态下产生附加的特征频率分量。实时监测附加特征频率分量的幅度，并调整探针样品分离，以将监测的幅度保持在最佳值，以在近放牧条件下操作AFM系统。

7. 发明授权

US07428054B2 Micro-optical sensor system for pressure, acceleration, and pressure gradient measurements 失效
标题翻译：用于压力，加速和压力梯度测量的微光学传感器系统
公开(公告)号：US07428054B2
公开(公告)日：2008-09-23
申请号：US11038156
申请日：2005-01-21
申请人： Miao Yu , Balakumar Balachandran
发明人： Miao Yu , Balakumar Balachandran
IPC分类号： G01B9/02 , G02B6/00
CPC分类号： G01H9/006 , G01D5/35303 , G02B6/2935 , G02B6/29358
摘要： A micro-optical fiber tip based sensor system for pressure, acceleration, and pressure gradient measurements in a wide bandwidth, the design of which allows for multiplexity of the input side of the system is based on micro-electromechanical fabrication techniques. The optical portion of the system is based on low coherence fiber-optic interferometry techniques which has a sensor Fabry-Perot interferometer and a read-out interferometer combination that allows a high dynamic range and low sensitivity to the wavelength fluctuation of the light source. A phase modulation and demodulation scheme takes advantage of the Integrated Optical Circuit phase modulator and multi-step phase-stepping algorithm for providing high frequency and real time phase signal demodulation. The system includes fiber tip based Fabry-Perot sensors each of which has a diaphragm that is used as a transducer.
摘要翻译：用于在宽带宽中的压力，加速度和压力梯度测量的基于微光纤端头的传感器系统，其设计允许系统的输入侧的多路复用基于微机电制造技术。系统的光学部分基于低相干光纤干涉测量技术，其具有传感器法布里 - 珀罗干涉仪和读出干涉仪组合，其允许对光源的波长波动具有高动态范围和低灵敏度。相位调制和解调方案利用集成光电相位调制器和多步相位步进算法提供高频和实时相位信号解调。该系统包括基于光纤头的Fabry-Perot传感器，每个传感器都具有用作传感器的隔膜。

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