Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Guigen Liu"'
Autor:
Guigen Liu, Veronica Valvo, Sebastian W. Ahn, Devon Thompson, Kyle Deans, Jeon Woong Kang, Sharath Bhagavatula, Christine Dominas, Oliver Jonas
Publikováno v:
International Journal of Molecular Sciences, Vol 22, Iss 21, p 11752 (2021)
Advances in the intratumor measurement of drug responses have included a pioneering biomedical microdevice for high throughput drug screening in vivo, which was further advanced by integrating a graded-index lens based two-dimensional fluorescence mi
Externí odkaz:
https://doaj.org/article/a79757821daf4e97b97d09630f3a30f9
Publikováno v:
Materials, Vol 14, Iss 12, p 3392 (2021)
We analytically investigate the feasibility of long graded-index (GRIN)-lens-based microendoscopes through wavefront shaping. Following the very well-defined ray trajectories in a GRIN lens, mode-dependent phase delay is first determined. Then, the p
Externí odkaz:
https://doaj.org/article/2b5e6cd852d8464c98e25733c48a6667
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 1, Pp 1-8 (2016)
In an ultrasonic sensor system based on π phase-shifted fiber Bragg gratings (πFBGsÞ, a cost-effective way for sensor demodulation is to set the laser wavelength at the center of the steep spectral slope of the πFBG refection spectrum. Frequency
Externí odkaz:
https://doaj.org/article/6978020c414c4e6ba3b1affdee925bef
Autor:
Guigen Liu, Jeon Woong Kang, Sharath Bhagavatula, Sebastian W. Ahn, Peter T. C. So, Guillermo J. Tearney, Oliver Jonas
Publikováno v:
Optics express. 30(20)
Graded index (GRIN) lens endoscopy has broadly benefited biomedical microscopic imaging by enabling accessibility to sites not reachable by traditional benchtop microscopes. It is a long-held notion that GRIN lenses can only be used as rigid probes,
Publikováno v:
Journal of Lightwave Technology. 38:2547-2554
Plasma radiation plays an important role in the operation and control of magnetic confinement fusion and is typically measured by bolometers. Here, we study the influence of mechanical vibration and magnetic field, which are typically present in magn
Publikováno v:
Journal of Lightwave Technology. 38:2555-2563
A theoretical framework is established to study the interaction between circular-crested Lamb waves (CCLWs) and a fiber-optic ultrasound sensor (FOUS) bonded onto the surface of a plate structure. CCLW is a universal expression of guided Lamb waves,
Autor:
Zigeng Liu, Qiwen Sheng, Ming Han, Xin Wang, Wei Peng, Guigen Liu, Zhenguo Jing, Yun Liu, Yupeng Zhu
Publikováno v:
Journal of Lightwave Technology. 37:4210-4215
Wavelength interrogation has been widely used for fiber-optic sensors based on Fabry‐Perot interferometers (FPIs) because of its high measurement resolution. However, phase ambiguity often limits the measurement range to be less than one free-spect
Publikováno v:
Journal of Lightwave Technology. 37:2165-2171
A fiber-optic Fabry–Perot interferometer (FPI) is proposed and demonstrated as an electric current sensor based on ohmic heating with temperature self-compensation. The sensing head is fabricated by attaching a silicon pillar on the fiber tip as th
Autor:
Ming Han, Guigen Liu
Publikováno v:
IEEE Sensors Journal. 18:9257-9262
We theoretically and experimentally investigate a locking method for a fiber-optic acoustic emission (AE) sensor system based on a $\pi $ -phase-shifted fiber Bragg grating ( $\pi $ -FBG) and a distributed-feedback diode laser. The $\pi $ -FBG featur
Publikováno v:
Optical Fiber Sensors Conference 2020 Special Edition.
Flow measurement by the hot-wire fiber-optic water flow sensor based on laser-heated silicon Fabry-Pérot interferometer (FPI) need to compensate the temperature variation of the water. This temperature compensation is required to get the flow speed