Journal articles: 'Optical fiber bundles'

1

Gorris, Hans H., Timothy M. Blicharz, and David R. Walt. "Optical-fiber bundles." FEBS Journal 274, no. 21 (October 12, 2007): 5462–70. http://dx.doi.org/10.1111/j.1742-4658.2007.06078.x.

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Aleksić, R., and R. M. Jančić. "Coherent Optical Fiber Bundles Production." Materials Science Forum 214 (May 1996): 73–80. http://dx.doi.org/10.4028/www.scientific.net/msf.214.73.

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Orth, A., M. Ploschner, E. R. Wilson, I. S. Maksymov, and B. C. Gibson. "Optical fiber bundles: Ultra-slim light field imaging probes." Science Advances 5, no. 4 (April 2019): eaav1555. http://dx.doi.org/10.1126/sciadv.aav1555.

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Optical fiber bundle microendoscopes are widely used for visualizing hard-to-reach areas of the human body. These ultrathin devices often forgo tunable focusing optics because of size constraints and are therefore limited to two-dimensional (2D) imaging modalities. Ideally, microendoscopes would record 3D information for accurate clinical and biological interpretation, without bulky optomechanical parts. Here, we demonstrate that the optical fiber bundles commonly used in microendoscopy are inherently sensitive to depth information. We use the mode structure within fiber bundle cores to extract the spatio-angular description of captured light rays—the light field—enabling digital refocusing, stereo visualization, and surface and depth mapping of microscopic scenes at the distal fiber tip. Our work opens a route for minimally invasive clinical microendoscopy using standard bare fiber bundle probes. Unlike coherent 3D multimode fiber imaging techniques, our incoherent approach is single shot and resilient to fiber bending, making it attractive for clinical adoption.

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Cheng, Zhou, Shinji Fujiwara, Yoshito Ohtani, and Kazuhiko Sameshima. "A New Method of Sample Preparation for Kenaf Bast Fiber Length Analysis with Automated Fiber Length Analyzer." Holzforschung 54, no. 2 (February 29, 2000): 213–18. http://dx.doi.org/10.1515/hf.2000.036.

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Summary Kenaf bast fiber bundles alternate radially in layers accompanied by sieve elements and phloem parenchyma cells. Fiber bundles are about 20 % in the area of a cross section of kenaf bast. Four sample preparation methods for kenaf bast fiber length analysis with an automated fiber length analyzer were compared and a new sample preparation method including three steps was proven to be accurate. Fiber bundles were obtained by acidified sodium chlorite treatment and an additional ammonium oxalate treatment. Following a 1% sodium hydroxide treatment, fiber bundles were completely separated into single fibers with no damage. Fiber length values of this method were more accurate and reliable than other three sample preparation methods and manual measurement with optical microscope.

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Sharp, Nathan, Johnathan Goodsell, and Anthony Favaloro. "Measuring Fiber Orientation of Elliptical Fibers from Optical Microscopy." Journal of Composites Science 3, no. 1 (March 2, 2019): 23. http://dx.doi.org/10.3390/jcs3010023.

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The orientation of fibers with elliptical cross-sections cannot be estimated using standard optical microscopy analysis methods in which the ratio of the minor-axis to the major-axis and orientation of the major-axis are directly used to determine the fiber spherical coordinates, θ and ϕ . A new method for estimating the orientation of fibers with elliptical cross-sections is presented and validated using both simulations and experiments. Fibers with elliptical cross-sections rather than circular possess a roll degree of freedom, which significantly affects the dimensions of projected cross-sections in viewing planes. The equations of the projected ellipse of an elliptic cylinder onto a viewing plane are determined in terms of typical spherical coordinate system angles, θ and ϕ , the roll angle, α , and the fiber semi-major and semi-minor diameters. Fiber angles are determined by numerical fitting of the developed equations to measured ellipses. An ambiguity in the determined angles is identified, and, in the special case of fiber bundles, a scheme is presented by which the ambiguity can be resolved. Validation experiments showed that the method is quite effective at estimating fiber orientation from micrographs when fiber cross-section dimensions are measured beforehand, and the additional ambiguity is resolved easily in the case of fiber bundles.

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Desmet, Cloé, Karim Vindas, Ricardo Alvarado Meza, Patrick Garrigue, Silvia Voci, Neso Sojic, Ali Maziz, et al. "Multiplexed Remote SPR Detection of Biological Interactions through Optical Fiber Bundles." Sensors 20, no. 2 (January 16, 2020): 511. http://dx.doi.org/10.3390/s20020511.

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The development of sensitive methods for in situ detection of biomarkers is a real challenge to bring medical diagnosis a step forward. The proof-of-concept of a remote multiplexed biomolecular interaction detection through a plasmonic optical fiber bundle is demonstrated here. The strategy relies on a fiber optic biosensor designed from a 300 µm diameter bundle composed of 6000 individual optical fibers. When appropriately etched and metallized, each optical fiber exhibits specific plasmonic properties. The surface plasmon resonance phenomenon occurring at the surface of each fiber enables to measure biomolecular interactions, through the changes of the retro-reflected light intensity due to light/plasmon coupling variations. The functionalization of the microstructured bundle by multiple protein probes was performed using new polymeric 3D-printed microcantilevers. Such soft cantilevers allow for immobilizing the probes in micro spots, without damaging the optical microstructures nor the gold layer. We show here the potential of this device to perform the multiplexed detection of two different antibodies with limits of detection down to a few tenths of nanomoles per liter. This tool, adapted for multiparametric, real-time, and label free monitoring is minimally invasive and could then provide a useful platform for in vivo targeted molecular analysis.

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Haibin Ni, Ming Wang, Long Li, Wei Chen, and Tingting Wang. "Photonic-Crystal-Based Optical Fiber Bundles and Their Applications." IEEE Photonics Journal 5, no. 4 (August 2013): 2400213. http://dx.doi.org/10.1109/jphot.2013.2267534.

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Fernandez, P. R., J. L. Lazaro, A. Gardel, O. Esteban, A. E. Cano, and P. A. Revenga. "Location of Optical Fibers for the Calibration of Incoherent Optical Fiber Bundles for Image Transmission." IEEE Transactions on Instrumentation and Measurement 58, no. 9 (September 2009): 2996–3003. http://dx.doi.org/10.1109/tim.2009.2016807.

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9

Ford, Helen D., and Ralph P. Tatam. "Characterization of optical fiber imaging bundles for swept-source optical coherence tomography." Applied Optics 50, no. 5 (February 3, 2011): 627. http://dx.doi.org/10.1364/ao.50.000627.

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Lewis, Michael R., and Robert Josephs. "Cryo-electron microscopy of deoxy-sickle hemoglobin fibers." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (August 1992): 1036–37. http://dx.doi.org/10.1017/s0424820100129814.

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Sickle cell disease is caused by the self assembly of deoxy-sickle hemoglobin (HbS) into fibers which rigidify and distort red cells. Fiber assembly is auto-catalytic in that the surface of existing fibers acts as a nucleating template for the assembly of new fibers (heterogeneous nucleation). Thus fibers are found typically as bundles of aligned particles. Understanding fiber-fiber interaction is crucial to understanding the pathology of fiber formation. Moreover, disrupting fiber-fiber interactions would likely ameliorate the severity of the disease. We have obtained images of both laterally associated and isolated fibers by cryo-electron microscopy (Figure 1). Optical diffraction indicates that laterally associated fibers tend to have much better long range order than isolated fibers. This observation suggests that deoxy-HbS fibers are more disordered when they are not mechanically coupled by inter-fiber contacts. In this study we assess the effects of fiber-fiber interactions on torsional disorder of deoxy-HbS fibers.

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Song, Jifeng, Juntao Wang, Yisen Niu, Wenmo Wang, Kai Tong, Hai Yu, and Yongping Yang. "Flexible high flux solar simulator based on optical fiber bundles." Solar Energy 193 (November 2019): 576–83. http://dx.doi.org/10.1016/j.solener.2019.10.002.

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Nadkarni, Seemantini K., Brett E. Bouma, Dvir Yelin, Amneet Gulati, and Guillermo J. Tearney. "Laser speckle imaging of atherosclerotic plaques through optical fiber bundles." Journal of Biomedical Optics 13, no. 5 (2008): 054016. http://dx.doi.org/10.1117/1.2982529.

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Bäuerle, Holger, and Bronislav Hracek. "Maximum Radiation Intensity Based on End-Fused Optical Fiber Bundles." adhesion ADHESIVES + SEALANTS 17, no. 2 (June 2020): 20–23. http://dx.doi.org/10.1007/s35784-020-0044-x.

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14

Bagnuolo, W. G., I. K. Furenlid, D. R. Gies, D. J. Barry, C. H. Hopper, H. A. McAlister, and W. I. Hartkopf. "The Multi-Telescope Telescope Project: An Inexpensive Spectroscopic Facility." International Astronomical Union Colloquium 135 (1992): 137–39. http://dx.doi.org/10.1017/s0252921100006229.

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AbstractWe have constructed a new facility at the Georgia State University Hard Labor Creek Observatory, consisting of a telescope and a fiber-fed spectrograph and detector. The Multi-Telescope Telescope (MTT) is an inexpensive one-meter light-collecting telescope whose ‘primary’ mirror consists of nine 33.3 cm mirrors. Each mirror of the MTT focuses light into a separate optical fiber, thus avoiding light losses of conventional fiber bundles. The optical fibers feed a modified ‘slightly’ off-plane Ebert-Fastie spectrograph. The detector is a CCD with low thermal noise characteristics, cooled to 200 K. The CHARA spectroscopic facility will be used for high precision radial velocity observations of binary orbits, tomographic separation of binary spectra, and observations of nonradial pulsations of Be stars.

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Petroll, W. M., H. D. Cavanagh, P. Barry, P. Andrews, and J. V. Jester. "Quantitative analysis of stress fiber orientation during corneal wound contraction." Journal of Cell Science 104, no. 2 (February 1, 1993): 353–63. http://dx.doi.org/10.1242/jcs.104.2.353.

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Previous studies of actin and actin-binding proteins in corneal myofibroblasts suggest the development of a contractile apparatus composed, in part, of F-actin micro-filament bundles, i.e. stress fibers. To better understand the mechanics of wound contraction and the relationship between microfilament bundles and wound closure, we have analyzed the spatial and temporal organization of stress fibers during the process of corneal wound healing. Rabbit corneas (26 eyes) received 6 mm full-thickness, central incisions and were studied at various times for F-actin organization using en bloc (whole cornea) staining with FITC-phalloidin, as well as conventional histological techniques. 3-D datasets (z-series of 40 en face optical sections, 1 micron steps) were collected using the Biorad MRC-600 laser scanning confocal microscope at various regions within the wound. At 7 days, 3-D analysis showed randomly oriented, interconnected F-actin filament bundles (stress fibers). Between 7 and 28 days, stress fibers appeared to organize gradually into planes parallel to the wound surface, with a large population achieving a final orientation nearly parallel to the long axis of the wound. Using Fourier Transform analysis techniques, an orientation index (OI) was calculated to quantitate global fiber orientation at each time point. Analysis of variance demonstrated a significant change (P < 0.001) in overall stress fiber orientation from a random distribution at day 7 to an alignment more parallel to the lateral wound borders at day 28. Overall, these data suggest that stress fibers undergo temporal changes in spatial organization that correlate with wound closure, and that wound closure does not involve the development of previously described contractile or tractional forces aligned directly across the wound.

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WANG Xing-feng, 王形锋, 杨建峰 YANG Jian-feng, 闫兴涛 YAN Xing-tao, 陈国庆 CHEN Guo-qing, and 许彦涛 XU Yan-tao. "Fabrication and optical performances measurements of flexible chalcogenide imaging fiber bundles." Optics and Precision Engineering 25, no. 12 (2017): 3137–44. http://dx.doi.org/10.3788/ope.20172512.3137.

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17

Nakaji, Haruo, Nobuo Kouyama, Yoshihiro Muragaki, Yoriko Kawakami, and Hiroshi Iseki. "Localization of nerve fiber bundles by polarization-sensitive optical coherence tomography." Journal of Neuroscience Methods 174, no. 1 (September 2008): 82–90. http://dx.doi.org/10.1016/j.jneumeth.2008.07.004.

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18

Jia, Yanqin, Yuxin Yang, Yingna Guo, Wan Guo, Qin Qin, Xia Yang, and Yihang Guo. "Simulated sunlight photocatalytic degradation of aqueous p-nitrophenol and bisphenol A in a Pt/BiOBr film-coated quartz fiber photoreactor." Dalton Transactions 44, no. 20 (2015): 9439–49. http://dx.doi.org/10.1039/c5dt00417a.

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Pt/BiOBr film-coated quartz fiber bundles were prepared by dip-coating combined with photodeposition, and their phase and chemical structures, electronic and optical properties, textural properties as well as morphologies were well-characterized.

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19

Kocaoglu, Omer P., Barry Cense, Ravi S. Jonnal, Qiang Wang, Sangyeol Lee, Weihua Gao, and Donald T. Miller. "Imaging retinal nerve fiber bundles using optical coherence tomography with adaptive optics." Vision Research 51, no. 16 (August 2011): 1835–44. http://dx.doi.org/10.1016/j.visres.2011.06.013.

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20

Liu, Gaiqin, and Zengwei Ma. "Study on a novel portable urine analyzer based on optical fiber bundles." Measurement 130 (December 2018): 412–21. http://dx.doi.org/10.1016/j.measurement.2018.08.037.

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21

Risi, Matthew D., Houssine Makhlouf, Andrew R. Rouse, and Arthur F. Gmitro. "Analysis of multimode fiber bundles for endoscopic spectral-domain optical coherence tomography." Applied Optics 54, no. 1 (December 23, 2014): 101. http://dx.doi.org/10.1364/ao.54.000101.

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22

Szunerits, Sabine, and David R. Walt. "The Use of Optical Fiber Bundles Combined with Electrochemistry for Chemical Imaging." ChemPhysChem 4, no. 2 (February 7, 2003): 186–92. http://dx.doi.org/10.1002/cphc.200390029.

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Morgan, P. D., and C. H. Wilson. "Visible spectroscopy of the JET pumped divertor using coherent optical‐fiber bundles." Review of Scientific Instruments 66, no. 1 (January 1995): 606–8. http://dx.doi.org/10.1063/1.1146301.

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24

Shapar, V., Vladimir Lysenko, and Alla V. Bondarenko. "Multichannel Fiber-Optic Ring Converters for Optical Sensors of Physical Quantities." Journal of Nano Research 39 (February 2016): 221–27. http://dx.doi.org/10.4028/www.scientific.net/jnanor.39.221.

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The substantial achievements in the area of manufacturing technology for optical fiber bundles and fiber-optic transducers (FOTs) stimulated interest in their application in various sensors of physical quantities as well as in measuring instruments. Being insensitive to electromagnetic interferences, FOTs demonstrated high sensitivity to measured physical quantities. They made it possible to perform contactless measurements in many cases of hindered access to the objects under investigation. Their spark-and explosion-safety as well as manufacturing simplicity make FOT-based measuring instruments especially useful for application in coal-mining and oil-and-gas industry where the safety problems are of vital importance.

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Samian, A. H. Zaidan, Sujito, M. Yasin, M. Pujiyati, and Supadi. "Liquid level sensor using two fiber bundles." Sensors and Actuators A: Physical 280 (September 2018): 552–58. http://dx.doi.org/10.1016/j.sna.2018.08.032.

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Darwis, Atmawi, Apri Heri Iswanto, Woo-Seok Jeon, Nam-Hun Kim, Basuki Wirjosentono, Arida Susilowati, and Rudi Hartono. "Variation of quantitative anatomical characteristics in the culm of belangke bamboo (Gigantochloa pruriens)." BioResources 15, no. 3 (July 9, 2020): 6617–26. http://dx.doi.org/10.15376/biores.15.3.6617-6626.

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The anatomical characteristics of the stem of belangke bamboo (Gigantochloa pruriens), which is native in North Sumatra, Indonesia, were examined to attain valuable information for identification and effective utilization. The number and type of vessel bundles and the fiber and metaxylem dimensions in the longitudinal (bottom, middle, and top) and radial (outer, central, and inner) directions of the bamboo culm were investigated by optical microscopy. The vascular bundles were distributed unevenly and arranged alternately, as shown by cross-sectional images of the culms. The proportion of vascular bundles in the culm decreased from the outer layer to the inner layer and tended to increase from the bottom to the top. Most vascular bundles were classified as type IV at the bottom and as type III in the middle and top parts. Fiber length and cell wall thickness tended to increase from the bottom to the top and from the inner layer to the outer layer. Metaxylem length and diameter increased from the outer layer to the inner layer and from the bottom towards the top of the stem. It was revealed that the anatomical characteristics of the belangke bamboo varied significantly in the vertical and radial directions.

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He Xu, 何煦, and 向阳 Xian Yang. "Study on Contrast Transfer Function of Fiber-Optic Image Bundles." Acta Optica Sinica 31, no. 7 (2011): 0706006. http://dx.doi.org/10.3788/aos201131.0706006.

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Scharf, Elias, Robert Kuschmierz, and Jürgen Czarske. "Holographic lensless fiber endoscope with needle size using self-calibration." tm - Technisches Messen 86, no. 3 (March 26, 2019): 144–50. http://dx.doi.org/10.1515/teme-2018-0087.

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AbstractEndoscopes enable optical keyhole access in many applications for instance in biomedicine. In general, coherent fiber bundles (CFB) are used in conjunction with rigid lens systems which determine a fixed image plane. However, the lens system limits the minimum diameter of the endoscope typically to several millimeters. Additionally, only pixelated two-dimensional amplitude patterns can be transferred due to phase scrambling between adjacent cores. These limitations can be overcome by digital optical elements. Thus, in principle thinner, lensless, holographic endoscopes with a three-dimensional adjustable focus for imaging and illumination can be realized. So far, several techniques based on single mode CFB and multi mode fibers (MMF) have been presented. However, these techniques require access to both sides of the fiber, in order to calibrate the bending and temperature sensitive phase distortion, which is not possible in a real application. We present the feasibility of an in-situ calibration and compensation of a CFB with single sided access. A lensless endoscope with a diameter of only 500 µm, a spatial resolution around 1 µm and video rate capability is realized.

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29

Sawyer, Travis W., Ryan Petersburg, and Sarah E. Bohndiek. "Tolerancing the alignment of large-core optical fibers, fiber bundles and light guides using a Fourier approach." Applied Optics 56, no. 12 (April 13, 2017): 3303. http://dx.doi.org/10.1364/ao.56.003303.

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Li, Hongsheng, Bingquan Chen, Keyan Feng, and Hongyang Ma. "Modulation transfer function measurement method for fiber optic imaging bundles." Optics & Laser Technology 40, no. 2 (March 2008): 415–19. http://dx.doi.org/10.1016/j.optlastec.2007.07.004.

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31

Grosso, Federica, Alessandro Croce, Roberta Libener, Narciso Mariani, Massimo Pastormerlo, Antonio Maconi, and Caterina Rinaudo. "Asbestos fiber identification in liver from cholangiocarcinoma patients living in an asbestos polluted area: a preliminary study." Tumori Journal 105, no. 5 (March 27, 2019): 404–10. http://dx.doi.org/10.1177/0300891619839305.

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Purpose: To assess whether asbestos fibers may be observed in liver tissue of patients with cholangiocarcinoma (CC) with environmental or working asbestos exposure. Methods: Detection of fibers was performed directly on histologic sections of liver from 7 patients with CC using optical microscope and variable pressure scanning electron microscopy equipped with energy-dispersive spectroscopy (VP-SEM/EDS). All patients were from Casale Monferrato, Italy, a highly asbestos-polluted town. Due to ethical constraints, observers were blinded to patients’ clinical features. Results: Fibers/bundles of fibers of chrysotile were detected in 5 out of 7 patients (71%). The boundary between healthy and neoplastic tissue or the fibrocollagen tissue produced by the neoplasia were identified as areas of fiber incorporation. Conclusions: This study is the first report about the detection of chrysotile asbestos fibers in the liver of patients with CC. Further studies on larger cohorts are needed to corroborate our preliminary findings.

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32

Lázaro, José, Pedro Fernández, Alfredo Gardel, Angel Cano, and Carlos Luna. "Sensor Calibration Based on Incoherent Optical Fiber Bundles (IOFB) Used For Remote Image Transmission." Sensors 9, no. 10 (October 19, 2009): 8215–29. http://dx.doi.org/10.3390/s91008215.

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33

Sanders, Tarun M., Christopher Lamb, Gino Putrino, and Adrian J. Keating. "Method for Increasing the Core Count and Area of High Density Optical Fiber Bundles." IEEE Journal of Selected Topics in Quantum Electronics 26, no. 4 (July 2020): 1–8. http://dx.doi.org/10.1109/jstqe.2020.2984562.

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34

Hao, Wenfeng, Xuefeng Yao, Yinji Ma, and Yanan Yuan. "Experimental study on interaction between matrix crack and fiber bundles using optical caustic method." Engineering Fracture Mechanics 134 (January 2015): 354–67. http://dx.doi.org/10.1016/j.engfracmech.2014.12.004.

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35

Jia, Binghui, and Jing Yu. "A Differential Light Intensity-Modulation Optical Fiber Bundles Designed for Milling Tool Vibration Measurement." IEEE Access 9 (2021): 84799–810. http://dx.doi.org/10.1109/access.2021.3088462.

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Zhang, Hao, Robert Kuschmierz, and Jürgen Czarske. "Miniaturized interferometric 3-D shape sensor using coherent fiber bundles." Optics and Lasers in Engineering 107 (August 2018): 364–69. http://dx.doi.org/10.1016/j.optlaseng.2018.04.011.

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37

Xie, Siying, Xiaodong Zhang, Yiwei Xiong, and Hongcheng Liu. "Demodulation technique for 3-D tip clearance measurements based on output signals from optical fiber probe with three two-circle coaxial optical fiber bundles." Optics Express 27, no. 9 (April 19, 2019): 12600. http://dx.doi.org/10.1364/oe.27.012600.

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38

Kim, Kyoung Jin, Yuki Furuya, Kei Kamada, Rikito Murakami, Vladimir V. Kochurikhin, Masao Yoshino, Hiroyuki Chiba, et al. "Growth and Scintillation Properties of Directionally Solidified Ce:LaBr3/AEBr2 (AE = Mg, Ca, Sr, Ba) Eutectic System." Crystals 10, no. 7 (July 6, 2020): 584. http://dx.doi.org/10.3390/cryst10070584.

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Ce-doped LaBr3/AEBr2 (AE = Mg, Ca, Sr, Ba) eutectics were grown using the Bridgman–Stockbarger (BS) method in quartz ampoules. The eutectics (AE = Mg and Ca) showed optical transparency like optical fiber bundles. A grown Ce-doped LaBr3/MgBr2 eutectic shows a 355 nm emission ascribed to Ce3+ 4f-5d transition under X-ray excitation. The smaller the ionic size of AE, the higher the light yield of the sample was. The light yield of Ce:LaBr3/MgBr2 was 34,300 photon/MeV, which is higher than Ce:LYSO standard. Scintillation decay time under 662 keV gamma-ray excitation was 18.8 ns.

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39

Bayramli, E., and R. L. Powell. "The normal (transverse) impregnation of liquids into axially oriented fiber bundles." Journal of Colloid and Interface Science 138, no. 2 (September 1990): 346–53. http://dx.doi.org/10.1016/0021-9797(90)90217-c.

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40

Liu, Gaiqin, Zengwei Ma, Rui Li, Nan Hu, Ping Chen, Fei Wang, Ruiying Zhang, and Longcong Chen. "Study on a novel core module based on optical fiber bundles for urine dry-chemistry analysis." Review of Scientific Instruments 88, no. 9 (September 2017): 094306. http://dx.doi.org/10.1063/1.4990686.

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41

Garvin, Mona K., Michael D. Abràmoff, Kyungmoo Lee, Meindert Niemeijer, Milan Sonka, and Young H. Kwon. "2-D Pattern of Nerve Fiber Bundles in Glaucoma Emerging from Spectral-Domain Optical Coherence Tomography." Investigative Opthalmology & Visual Science 53, no. 1 (January 30, 2012): 483. http://dx.doi.org/10.1167/iovs.11-8349.

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42

Shirdel, M., R. S. Buell, M. J. Wells, C. Muharam, and J. C. Sims. "Horizontal-Steam-Injection-Flow Profiling Using Fiber Optics." SPE Journal 24, no. 02 (February 14, 2019): 431–51. http://dx.doi.org/10.2118/181431-pa.

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Summary Steam-conformance control in horizontal injectors is important for efficient reservoir-heat management in heavy-oil fields. Suboptimal conformance and nonuniform heating of the reservoir can substantially affect the economics of the field development and oil-production response and result in nonuniform steam breakthrough. To achieve the required control, it is essential to have an appropriate well-completion architecture and robust surveillance. Five fiber-optic systems, each with a unique steam-conformance-control-completion configuration, have been installed in two horizontal steam injectors to help mature steam-injection-flow profiling and conformance-control solutions. These fiber-optic systems have used custom-designed fiber-optic bundles of multimode and single-mode fibers for distributed-temperature sensing (DTS) and distributed-acoustic sensing (DAS), respectively. Fiber-optic systems were also installed in a steam-injection-test-flow loop. All the optical fibers successfully acquired data in the wells and flow loop, measuring temperature and acoustic energy. A portfolio of algorithms and signal-processing techniques was developed to interpret the DTS and DAS data for quantitative steam-injection-flow profiling. The heavily instrumented flow-loop environment was used to characterize DTS and DAS response in a design-of-experiment (DOE) matrix to improve the flow-profiling algorithms. These algorithms are dependent on independent physical principles derived from multiphase flow, thermal hydraulic models, acoustic effects, large-data-array processing, and combinations of these methods for both transient and steady-state steam flow. A high-confidence flow profile is computed using the convergence of the algorithms. The flow-profiling-algorithm results were further validated using 11 short-offset injector observation wells wells in the reservoir that confirmed steam movement near the injectors.

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43

R’Mili, M., and J. Lamon. "Investigation of subcritical crack growth using load relaxation tests on fiber bundles." Acta Materialia 59, no. 7 (April 2011): 2850–57. http://dx.doi.org/10.1016/j.actamat.2011.01.024.

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44

Gür Güngör, Sirel, Ahmet Akman, Almila Sarıgül Sezenöz, and Gülşah Tanrıaşıkı. "Prevalence of Split Nerve Fiber Layer Bundles in Healthy People Imaged with Spectral Domain Optical Coherence Tomography." Türk Oftalmoloji Dergisi 46, no. 6 (December 1, 2016): 274–76. http://dx.doi.org/10.4274/tjo.49358.

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Sun, Ren-De, Akira Nakajima, Itaru Watanabe, Toshiya Watanabe, and Kazuhito Hashimoto. "TiO 2 -coated optical fiber bundles used as a photocatalytic filter for decomposition of gaseous organic compounds." Journal of Photochemistry and Photobiology A: Chemistry 136, no. 1-2 (August 2000): 111–16. http://dx.doi.org/10.1016/s1010-6030(00)00330-0.

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46

Chiarulli, Donald M., Steven P. Levitan, Paige Derr, Robert Hofmann, Bryan Greiner, and Matt Robinson. "Demonstration of a multichannel optical interconnection by use of imaging fiber bundles butt coupled to optoelectronic circuits." Applied Optics 39, no. 5 (February 10, 2000): 698. http://dx.doi.org/10.1364/ao.39.000698.

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47

Kang, H. G., S. J. Hong, G. B. Ko, H. S. Yoon, I. C. Song, J. T. Rhee, and J. S. Lee. "Assessment of MR-compatibility of SiPM PET insert using short optical fiber bundles for small animal research." Journal of Instrumentation 10, no. 12 (December 11, 2015): P12008. http://dx.doi.org/10.1088/1748-0221/10/12/p12008.

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48

Hollingworth, S., M. Zhao, and S. M. Baylor. "The amplitude and time course of the myoplasmic free [Ca2+] transient in fast-twitch fibers of mouse muscle." Journal of General Physiology 108, no. 5 (November 1, 1996): 455–69. http://dx.doi.org/10.1085/jgp.108.5.455.

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Bundles of 10-100 fibers were dissected from the extensor digitorum longus muscle of mouse, mounted in an apparatus for optical recording, and stretched to long sarcomere length (> or = 3.6 microns). One fiber within the bundle was microinjected with furaptra, a fluorescent indicator that responds rapidly to changes in myoplasmic free [Ca2+] (delta [Ca2+]). Twitches and brief tetani were initiated by external stimulation. At myoplasmic furaptra concentrations of approximately 0.1 mM, the indicator's fluorescence signal during fiber activity (delta F/F) was well resolved. delta F/F was converted to delta [Ca2+] under the assumption that furaptra's myoplasmic dissociation constant for Ca2+ is 98 microM at 16 degrees C and 109 microM at 28 degrees C. At 16 degrees C, the peak amplitude of delta [Ca2+] during a twitch was 17.8 +/- 0.4 microM (+/-SEM; n = 8) and the half-width of delta [Ca2+] was 4.6 +/- 0.3 ms. At 28 degrees C, the peak and half-width values were 22.1 +/- 1.8 microM and 2.0 +/- 0.1 ms, respectively (n = 4). During a brief high-frequency tetanus, individual peaks of delta [Ca2+] were also well resolved and reached approximately the same amplitude that resulted from a single shock; the initial decays of delta [Ca2+] from peak slowed substantially during the tetanus. For a single twitch at 16 degrees C, the amplitude of delta [Ca2+] in fast-twitch fibers of mouse is not significantly different from that recently measured in fast-twitch fibers of frog (16.5 +/- 0.9 microM; Zhao, M., S. Hollingworth, and S.M. Baylor. 1996. Biophys. J. 70:896-916); in contrast, the half-width of delta [Ca2+] is surprisingly brief in mouse fibers, only about half that measured in frog (9.6 +/- 0.6 ms). The estimated peak rate at which Ca2+ is released from the sarcoplasmic reticulum in response to an action potential is also similar in mouse and frog, 140-150 microM/ms (16 degrees C).

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He, Xiaofeng, Liling Xie, Xiaoshan Zhang, Fan Lin, Xiaobo Wen, and Bo Teng. "The Structural Characteristics of Collagen in Swim Bladders with 25-Year Sequence Aging: The Impact of Age." Applied Sciences 11, no. 10 (May 17, 2021): 4578. http://dx.doi.org/10.3390/app11104578.

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Aged swim bladders from the yellow drum (Protonibea diacanthus) are considered collagen-based functional food with extremely high market value. The structural integrity of collagen may be crucial for its biological functions. In the current study, swim bladders with 25-year-old sequences were collected and found to be basically composed of collagen. Then, thermogravimetry (TG), differential scanning calorimetry (DSC), X-ray diffraction (XRD), and attenuated total reflectance–Fourier transform infrared spectroscopy (ATR–FTIR) were conducted to evaluate the integrity of the peptide chain and triple helix in the collagen. The structures of microfibers and fiber bundles were revealed with atomic force microscopy (AFM), scanning electrical microscopy (SEM), and optical spectroscopy. The collagens in the aged swim bladders were found to have similar thermal properties to those of fresh ones, but the relative content of the triple helixes was found to be negatively correlated with aging. The secondary structure of the remaining triple helix showed highly retained characteristics as in fresh swim bladders, and the microfibrils also showed a similar D-period to that of the fresh one. However, the fiber bundles displayed more compact and thick characteristics after years of storage. These results indicate that despite 25 years of aging, the collagen in the swim bladders was still partially retained with structures.

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Liu, Xishi, Yingdong Qu, Guanglong Li, Qiwen Zhou, Guanglei Wang, Junhua You, Ruiming Su, and Rongde Li. "Effect of fiber bundles spacing on mechanical properties of 2D-Cf/Al composites." Materials Research Express 6, no. 7 (April 10, 2019): 076523. http://dx.doi.org/10.1088/2053-1591/ab13bd.

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Journal articles on the topic 'Optical fiber bundles'

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