Yunfeng Gu

Layered cathode material P2-type Na2/3Ni1/3Mn2/3O2 for sodium-ion batteries: Advantages, failure mechanisms and modifications

Ye Liu, Le Yu, Yunfeng Gu, Jiyue Hou et autres

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A Novel Multicore Fiber by Drawing and Attaching Multiple Fibers Together

M. Li, S. J. Griffin, Brett R Knowlton, Joseph E. McCarthy et autres

We propose a new multicore fiber design by drawing multiple preforms simultaneously into fibers and attaching them together during the fiber draw process. A 4-core fiber has been demonstrated using this design. Fiber geometric and optical characterizations are reported.

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Near-surface reconstruction in cobalt-free spinel positive electrodes for high-performance lithium-ion batteries

Bao Zhang, Yongkang Liu, Yunfeng Gu, Ziliang Feng et autres

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Three-Layer Thin-Coated Optical Fiber with High Damage Resistance

Yunfeng Gu, Lei Mu, Weijun Niu, Matthew R. Drake et autres

Three-layer thin-coated single-mode fibers with coating diameter of 160 microns are designed and fabricated. The fibers show high puncture resistance even exceeding standard 242 microns dual coated fibers. The fibers also show good attenuation with no significant attenuation penalty on shipping spool.

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Reduced Coating Diameter Fibers for High Density Optical Interconnects

Ming-Jun Li, Arash Abedijaberi, Weijun Niu, Eric E. Leonhardt et autres

Reduced coating diameter fibers (RCDF) are attractive for increasing fiber density in cables due to their compatibility with the standard 125 μm clad diameter. In this paper, we review recent progress on RCDF and present new modeling and experimental results. We developed …

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Stripping-Free Direct Fiber Insertion Connectors Using Thin-Coated Optical Fibers

Jie Liu, Randy L. McClure, Qi Wu, Weijun Niu et autres

Single-mode fiber connectors are demonstrated with 125 µm diameter thin-coated fibers directly inserted into connector ferrules. Low insertion loss of less than 0.3 dB is achieved due to the high concentricity of the coating.

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Reduced Coating Diameter Fibers for High Density Cables

Ming-Jun Li, Arash Abedijaberi, Weijun Niu, Eric E. Leonhardt et autres

We review recent progress on reduced coating diameter fibers for increasing core density for optical interconnect applications. We discuss design considerations on microbending and mechanical reliability and present new experimental results.

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Thin-Coated Fibers for High-Density Optical Interconnects

Weijun Niu, Matthew R. Drake, Brett R Knowlton, Yali Zhang et autres

Thin coated single-mode fibers with coating diameters from 125 to 175 μm are fabricated and characterized. The fibers show excellent coating concentricity and attenuation similar to 250 μm coated fiber on shipping reels.

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Carbon‐doped fused silica glass

Haitao Zhang, Aram Rezikyan, Xinyuan Liu, Ling Cai et autres

Abstract Carbon‐doped fused silica glass is fabricated by consolidating zinc stearate‐doped porous silica soot blank. The carbon doping concentration is tunable and a maximum of ~0.3 wt% carbon can be incorporated into densified silica. Carbon dopants assemble into nanorod structures which are …

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Study on the ethanol sensing properties of SnO_2-ZnO

Yunfeng Gu

In order to improve both the sensitivity and selectivity of ethanol senor,a novel kind of SnO2-ZnO based gas sensing material was prepared by using the rare earth metal oxides,instead of noble metal and their compounds,as catalyst and additive.The gas sensing properties of …

Surface anisotropy of CrxN1−x films prepared on an inner wall by magnetic sputtering

Fei Zeng, Renrong Liang, X.W. Li, Shengping Wen et autres

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Guiding process developments by using automated mineralogical analysis

D.N. Sutherland, Yunfeng Gu