The Experts below are selected from a list of 17550 Experts worldwide ranked by ideXlab platform
Limin Tong - One of the best experts on this subject based on the ideXlab platform.
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Optical Microfiber-based ultrafast fiber lasers
Applied Physics B, 2019Co-Authors: Yuhang Li, Linjun Li, Lizhen Wang, Limin TongAbstract:Optical Microfibers drawn from conventional fibers have attracted considerable interests and have found many novel applications. Here, we review recent advances in ultrafast fiber lasers based on optical Microfibers. Starting with characteristics and fabrication of optical Microfibers, which are closely related to ultrafast fiber lasers, we show that characteristics of large portion of evanescent field, tailorable dispersion, high optical nonlinearity, very low optical loss and full compatibility with conventional fibers are greatly beneficial to novel ultrafast fiber lasers. We then highlight recent works on ultrafast fiber lasers based on optical Microfibers in terms of fast saturable absorbers made from optical Microfiber-supported nanomaterials, dispersion management and high optical nonlinearity, as well as some other novel ultrafast fiber lasers. Finally, we briefly discuss future opportunities for optical Microfiber-based ultrafast fiber lasers, such as high-order dispersion management, nonlinearity management and applications for sensing and measurement.
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Highly Stable Microfiber Structures for Sensor Applications
Sensors, 2016Co-Authors: Lei Zhang, Limin TongAbstract:We report several highly stable Microfiber sensors by embedding silica Microfibers into microfluidic chips or commercial micro Tee connectors. Sensitive absorption, fluorescence, and refractive index measurements are demonstrated.
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Microfluidic chip based Microfiber sensors
Sensors, 2015Co-Authors: Lei Zhang, Limin TongAbstract:We report microfluidic chip based Microfiber sensors by using silica Microfibers embedded in microchannels with a detection length of 2.5 cm. Ultra-sensitive absorption and fluorescence measurements are demonstrated.
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Microfiber Optical Sensors: A Review
Sensors, 2014Co-Authors: Jingyi Lou, Yipei Wang, Limin TongAbstract:With diameter close to or below the wavelength of guided light and high index contrast between the fiber core and the surrounding, an optical Microfiber shows a variety of interesting waveguiding properties, including widely tailorable optical confinement, evanescent fields and waveguide dispersion. Among various Microfiber applications, optical sensing has been attracting increasing research interest due to its possibilities of realizing miniaturized fiber optic sensors with small footprint, high sensitivity, fast response, high flexibility and low optical power consumption. Here we review recent progress in Microfiber optical sensors regarding their fabrication, waveguide properties and sensing applications. Typical Microfiber-based sensing structures, including biconical tapers, optical gratings, circular cavities, Mach-Zehnder interferometers and functionally coated/doped Microfibers, are summarized. Categorized by sensing structures, Microfiber optical sensors for refractive index, concentration, temperature, humidity, strain and current measurement in gas or liquid environments are reviewed. Finally, we conclude with an outlook for challenges and opportunities of Microfiber optical sensors.
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Fusion Splicing Soft Glass Microfibers for Photonic Devices
IEEE Photonics Technology Letters, 2011Co-Authors: Pan Wang, Limin TongAbstract:We report fusion splicing nonsilica soft glass Microfibers by using single pulses from a CO2 laser. Splice loss of a 2-μ m-diameter phosphate glass Microfiber is around 0.2 dB. By fusion splicing phosphate glass Microfibers into closed-loop rings, we demonstrate a Microfiber resonator with a Q-factor of about 25 000 and a 1.5-μm-wavelength microring laser with a linewidth of about 0.05 nm. Our results suggest a potential approach to fabricating robust and versatile photonic components or devices out of soft glass Microfibers that are excellent hosts for a variety of functional dopants.
Yuanjin Zhao - One of the best experts on this subject based on the ideXlab platform.
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Design of capillary microfluidics for spinning cell-laden Microfibers
Nature Protocols, 2018Co-Authors: Yunru Yu, Jiahui Guo, Luoran Shang, Jie Wang, Yuanjin ZhaoAbstract:This protocol describes how to produce cell-laden Microfibers using capillary microfluidic devices. The devices enable spinning of increasingly complex Microfibers, which can function as building blocks for 3D cell culture and tissue engineering.AbstractThis protocol describes the design of capillary microfluidics for spinning bioactive (cell-laden) Microfibers for three-dimensional (3D) cell culture and tissue-engineering applications. We describe the assembly of three types of microfluidic systems: (i) simple injection capillary microfluidics for the spinning of uniform Microfibers; (ii) hierarchical injection capillary microfluidics for the spinning of core–shell or spindle-knot structured Microfibers; and (iii) multi-barrel injection capillary microfluidics for the spinning of Microfibers with multiple components. The diverse morphologies of these bioactive Microfibers can be further assembled into higher-order structures that are similar to the hierarchical structures in tissues. Thus, by using different types of capillary microfluidic devices, diverse styles of Microfibers with different bioactive encapsulation can be generated. These bioactive Microfibers have potential applications in 3D cell culture, the mimicking of vascular structures, the creation of synthetic tissues, and so on. The whole protocol for device fabrication and Microfiber spinning takes ~1 d.
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Design of capillary microfluidics for spinning cell-laden Microfibers.
Nature Protocols, 2018Co-Authors: Luoran Shang, Jiahui Guo, Jie Wang, Yuanjin ZhaoAbstract:This protocol describes the design of capillary microfluidics for spinning bioactive (cell-laden) Microfibers for three-dimensional (3D) cell culture and tissue-engineering applications. We describe the assembly of three types of microfluidic systems: (i) simple injection capillary microfluidics for the spinning of uniform Microfibers; (ii) hierarchical injection capillary microfluidics for the spinning of core-shell or spindle-knot structured Microfibers; and (iii) multi-barrel injection capillary microfluidics for the spinning of Microfibers with multiple components. The diverse morphologies of these bioactive Microfibers can be further assembled into higher-order structures that are similar to the hierarchical structures in tissues. Thus, by using different types of capillary microfluidic devices, diverse styles of Microfibers with different bioactive encapsulation can be generated. These bioactive Microfibers have potential applications in 3D cell culture, the mimicking of vascular structures, the creation of synthetic tissues, and so on. The whole protocol for device fabrication and Microfiber spinning takes ~1 d.
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Bioinspired Multifunctional Spindle-Knotted Microfibers from Microfluidics.
Small, 2016Co-Authors: Luoran Shang, Jie Wang, Yao Cheng, Yuanjin ZhaoAbstract:Heterostructured Microfibers with spindle-knots and joints are developed using a novel microfluidic technology, which enables integrative Microfiber joint spinning, fluid coating, and knot emulsification. The knots emulsification process can be precisely tunable by adjusting the flow rates. In this way, the size and spacing of the spindle-knots of the Microfibers can be achieved with high controllability. More attractively, the construction process benefits from the broad availability of the coating fluids, which determines the compositions of the knots. Thus, the resultant Microfibers are imparted with distinctive functions, such as humidity-responsive water capture, thermally triggered water convergence, induced colloidal crystal assembly, and cell microcarrier arrays. These features make such Microfibers highly versatile for use in diverse applications.
Pan Wang - One of the best experts on this subject based on the ideXlab platform.
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Fusion Splicing Soft Glass Microfibers for Photonic Devices
IEEE Photonics Technology Letters, 2011Co-Authors: Pan Wang, Limin TongAbstract:We report fusion splicing nonsilica soft glass Microfibers by using single pulses from a CO2 laser. Splice loss of a 2-μ m-diameter phosphate glass Microfiber is around 0.2 dB. By fusion splicing phosphate glass Microfibers into closed-loop rings, we demonstrate a Microfiber resonator with a Q-factor of about 25 000 and a 1.5-μm-wavelength microring laser with a linewidth of about 0.05 nm. Our results suggest a potential approach to fabricating robust and versatile photonic components or devices out of soft glass Microfibers that are excellent hosts for a variety of functional dopants.
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Fusion Splicing Soft Glass Microfibers for
2011Co-Authors: Pan Wang, Limin TongAbstract:We report fusion splicing nonsilica soft glass mi- crofibers by using single pulses from a CO laser. Splice loss of a 2- m-diameter phosphate glass Microfiber is around 0.2 dB. By fusion splicing phosphate glass Microfibers into closed-loop rings, we demonstrate a Microfiber resonator with a -factor of about 25000 and a 1.5- m-wavelength microring laser with a linewidth of about 0.05 nm. Our results suggest a potential approach to fabricating robust and versatile photonic components or devices out of soft glass Microfibers that are excellent hosts for a variety of functional dopants. Index Terms—Laser cavity resonators, laser fusion, lasers, mi- crofibers.
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fusion spliced Microfiber closed loop resonators
IEEE Photonics Technology Letters, 2010Co-Authors: Pan Wang, Lei Zhang, Zongyin Yang, Fuxing Gu, Shanshan Wang, Qing Yang, Limin TongAbstract:Based on low-loss fusion splicing of Microfibers using a CO_2 laser, we demonstrate free-standing Microfiber closed-loop resonators. Loaded Q-factors of 110 500 with a finesse of 15.3 are obtained around 1.5- wavelength in a 2.4-mm-diameter closed-loop resonator suspended in air. The possibility of tuning resonant responses by changing the coupling efficiency is also demonstrated.
Yunru Yu - One of the best experts on this subject based on the ideXlab platform.
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Design of capillary microfluidics for spinning cell-laden Microfibers
Nature Protocols, 2018Co-Authors: Yunru Yu, Jiahui Guo, Luoran Shang, Jie Wang, Yuanjin ZhaoAbstract:This protocol describes how to produce cell-laden Microfibers using capillary microfluidic devices. The devices enable spinning of increasingly complex Microfibers, which can function as building blocks for 3D cell culture and tissue engineering.AbstractThis protocol describes the design of capillary microfluidics for spinning bioactive (cell-laden) Microfibers for three-dimensional (3D) cell culture and tissue-engineering applications. We describe the assembly of three types of microfluidic systems: (i) simple injection capillary microfluidics for the spinning of uniform Microfibers; (ii) hierarchical injection capillary microfluidics for the spinning of core–shell or spindle-knot structured Microfibers; and (iii) multi-barrel injection capillary microfluidics for the spinning of Microfibers with multiple components. The diverse morphologies of these bioactive Microfibers can be further assembled into higher-order structures that are similar to the hierarchical structures in tissues. Thus, by using different types of capillary microfluidic devices, diverse styles of Microfibers with different bioactive encapsulation can be generated. These bioactive Microfibers have potential applications in 3D cell culture, the mimicking of vascular structures, the creation of synthetic tissues, and so on. The whole protocol for device fabrication and Microfiber spinning takes ~1 d.
Luoran Shang - One of the best experts on this subject based on the ideXlab platform.
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Design of capillary microfluidics for spinning cell-laden Microfibers
Nature Protocols, 2018Co-Authors: Yunru Yu, Jiahui Guo, Luoran Shang, Jie Wang, Yuanjin ZhaoAbstract:This protocol describes how to produce cell-laden Microfibers using capillary microfluidic devices. The devices enable spinning of increasingly complex Microfibers, which can function as building blocks for 3D cell culture and tissue engineering.AbstractThis protocol describes the design of capillary microfluidics for spinning bioactive (cell-laden) Microfibers for three-dimensional (3D) cell culture and tissue-engineering applications. We describe the assembly of three types of microfluidic systems: (i) simple injection capillary microfluidics for the spinning of uniform Microfibers; (ii) hierarchical injection capillary microfluidics for the spinning of core–shell or spindle-knot structured Microfibers; and (iii) multi-barrel injection capillary microfluidics for the spinning of Microfibers with multiple components. The diverse morphologies of these bioactive Microfibers can be further assembled into higher-order structures that are similar to the hierarchical structures in tissues. Thus, by using different types of capillary microfluidic devices, diverse styles of Microfibers with different bioactive encapsulation can be generated. These bioactive Microfibers have potential applications in 3D cell culture, the mimicking of vascular structures, the creation of synthetic tissues, and so on. The whole protocol for device fabrication and Microfiber spinning takes ~1 d.
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Design of capillary microfluidics for spinning cell-laden Microfibers.
Nature Protocols, 2018Co-Authors: Luoran Shang, Jiahui Guo, Jie Wang, Yuanjin ZhaoAbstract:This protocol describes the design of capillary microfluidics for spinning bioactive (cell-laden) Microfibers for three-dimensional (3D) cell culture and tissue-engineering applications. We describe the assembly of three types of microfluidic systems: (i) simple injection capillary microfluidics for the spinning of uniform Microfibers; (ii) hierarchical injection capillary microfluidics for the spinning of core-shell or spindle-knot structured Microfibers; and (iii) multi-barrel injection capillary microfluidics for the spinning of Microfibers with multiple components. The diverse morphologies of these bioactive Microfibers can be further assembled into higher-order structures that are similar to the hierarchical structures in tissues. Thus, by using different types of capillary microfluidic devices, diverse styles of Microfibers with different bioactive encapsulation can be generated. These bioactive Microfibers have potential applications in 3D cell culture, the mimicking of vascular structures, the creation of synthetic tissues, and so on. The whole protocol for device fabrication and Microfiber spinning takes ~1 d.
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Bioinspired Multifunctional Spindle-Knotted Microfibers from Microfluidics.
Small, 2016Co-Authors: Luoran Shang, Jie Wang, Yao Cheng, Yuanjin ZhaoAbstract:Heterostructured Microfibers with spindle-knots and joints are developed using a novel microfluidic technology, which enables integrative Microfiber joint spinning, fluid coating, and knot emulsification. The knots emulsification process can be precisely tunable by adjusting the flow rates. In this way, the size and spacing of the spindle-knots of the Microfibers can be achieved with high controllability. More attractively, the construction process benefits from the broad availability of the coating fluids, which determines the compositions of the knots. Thus, the resultant Microfibers are imparted with distinctive functions, such as humidity-responsive water capture, thermally triggered water convergence, induced colloidal crystal assembly, and cell microcarrier arrays. These features make such Microfibers highly versatile for use in diverse applications.