Article
Engineering, Environmental
Kezhong Wang, Yunfeng Chao, Zhiqi Chen, Sepidar Sayyar, Caiyun Wang, Gordon Wallace
Summary: A facile coaxial wet-spinning method was used to continuously produce hollow graphene fibers with high conductivity and flexibility. The resulting fibers exhibited outstanding electrochemical and mechanical properties, making them promising candidates for use in wearable supercapacitors and electronics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Optics
Yunhao Zhu, Wei Li, Fuyu Gao, Xiaobin Xu, Ningfang Song
Summary: Hollow-core nested anti-resonant nodeless fibers (HC-NANFs) with a small-core structure and optimized design show low confinement loss, bending loss, and coupling loss. The fiber exhibits a large bandwidth, effective single-mode operation, and potential for high birefringence performance. It is suitable for short-haul applications in laser-based gas sensing, miniaturized fiber sensing, etc.
Article
Optics
Kailing Hu, Shuqin Lou, Haoqiang Jia, Xin Wang
Summary: A novel hybrid structure fiber is proposed, which can maintain polarization, achieve single-mode and high birefringence performance, and remain stable even under tight bending conditions.
Article
Engineering, Manufacturing
Qiang Gao, Jianbin Qin, Borui Guo, Xun Fan, Fangping Wang, Yu Zhang, Ronglin Xiao, Fei Huang, Xuetao Shi, Guangcheng Zhang
Summary: In this study, high-performance electromagnetic interference (EMI) shielding materials EP/AgNW/TAGA with enhanced electrical conductivity and compressive strength were successfully prepared, showing great potential for diverse applications in various fields.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Analytical
Maoxiang Hou, Neng Wang, Yun Chen, Zhengping Ou, Xin Chen, Fangcheng Shen, Haiming Jiang
Summary: In this study, a humidity sensor was constructed by laser graphitizing a polyimide film on the surface of a hollow-core optical fiber. The absorption of water vapor by the laser-induced graphene changed the reflectivity of the fiber and resulted in resonance intensity changes in the transmission spectrum. The sensor showed high sensitivity, short response and recovery times, wide operating temperature range and low cost, making it a promising solution for humidity sensing.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Optics
Grzegorz Gomolka, Dariusz Pysz, Ryszard Buczynski, Michas Nikodem
Summary: This paper investigates the optical detection of oxygen in the A-band using tunable laser diode spectroscopy and explores the use of hollow-core optical fibers as an alternative to conventional gas absorption cells. The research presents a convenient, robust, and scalable all-fiber setup using a silica anti-resonant hollow-core fiber. The results show successful absorption spectra recording and detection limit achievement for oxygen, as well as the versatility of the sensing approach in simultaneously detecting oxygen and methane.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Engineering, Electrical & Electronic
Akhilesh K. Pathak, Charusluk Viphavakit, B. M. A. Rahman, Vinod Kumar Singh
Summary: This study presents and analyzes a highly sensitive refractive index sensor based on a microfluidic channel and Ag-graphene composite nanowire, achieving maximum wavelength and amplitude sensitivity of 13700 nm/RIU and 1026 RIU-1. The sensor not only solves oxidation issues, but also enhances sensitivity, providing better performance than similar sensors. Additionally, the study thoroughly investigates the effects of various parameters on the sensor's performance, laying groundwork for the design of real-time, highly sensitive, remote sensing, and distributed SPR based RI sensor.
IEEE PHOTONICS JOURNAL
(2021)
Article
Optics
Lei Du, Xiaobo Ding, Dongdong Han, Lu Sui, Zonghui Tao, Wanzhuo Ma, Wang Tianshu, Yanbo Wang
Summary: The study proposes an all-optical wavelength converter based on graphene oxide, utilizing a homemade GO-coated microfiber with remarkable nonlinear optical response. It achieves stable conversion efficiency up to -45.52 dB with a wavelength tuning range of 6 nm.
Article
Optics
Shaocong Wei, Yuheng Zhang, Tong Wu, Zhiyun Hou, Changming Xia, Jiantao Liu, Guiyao Zhou
Summary: In this study, a novel hollow-core anti-resonant optical fiber (ARF) with nested elliptical and nested circular air holes is proposed. The fiber exhibits low loss, high birefringence, broadband, and bend-resistance properties through optimization of its structure parameters. Simulation results demonstrate that the FM losses of x-polarization and y-polarization are 0.03 dB/m and 0.043 dB/m, while the high birefringence and broad transmission band are 1.33 x 10-4 and 460 nm, respectively.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Y. Chen, J. Hammer, N. Y. Joly, P. St J. Russell
Summary: The study presents a design for efficiently generating entangled photon triplets by adjusting gas pressure, axial strain, and mechanical twist. The nanostrand of glass with two hollow channels enhances the nonlinear overlap between the fundamental and third harmonic modal fields.
Article
Optics
Zefeng Li, Guoyong Sun, Ruen Xie
Summary: A refractometer that integrates graphene oxide with the polarization maintaining microfiber has been experimentally demonstrated for measuring the refractive index. The refractometer features linear and high refractive index sensitivity, relative robustness, simple construction, and reproducibility. With the graphene oxide affixed on the microfiber, the refractive index sensitivity is further enhanced, making it a potential tool for biosensing applications.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yi-Chen Chung, Pei-Jie Xie, Yi-Wei Lai, An-Ya Lo
Summary: This study developed a composite photocatalyst consisting of hollow TiO2 microspheres and graphene to enhance the photocatalytic performance of wet CO2 photoreduction. The research focused on the impact of microsphere diameter, hydrothermal pH value, and graphene/hTS ratio on the photocatalytic activity, providing insights for designing photocatalysts with improved CO2PR performance.
Article
Optics
Shakhawath Hossain, Salimullah Shah, Mohammad Faisal
Summary: A novel Ge20Sb15Se65 based photonic crystal fiber with ultra-high birefringence and large nonlinearity has been proposed, suitable for mid infrared supercontinuum generation, fiber sensor, and spectroscopy systems. By optimizing the cladding arrangement, high birefringence and large nonlinearity can be achieved, with zero dispersion points at specific wavelengths.
Article
Engineering, Chemical
Mei-Ling Liu, Yu-Xuan Sun, Ying Tang, Zheng-Jun Fu, Qian Wang, Zhen-Yuan Wang, Shi-Peng Sun
Summary: Traditional technologies for solvent/water separation are energy intensive, but state-of-the-art organic solvent nanofiltration (OSN) membranes have limited solvents discrimination ability. This study used a pressure-assisted cross-linking strategy to coat graphene oxide (GO) on hollow fiber membranes, resulting in improved stability in solvent environments. The GO layer exhibited rapid transport of acetonitrile while impeding water penetration, and the cross-linked GO hollow fiber (CGHF) membrane showed high acetonitrile permeance and the ability to concentrate dilute acetonitrile solutions. This research provides a promising prospect for energy-efficient solvent dehydration and OSN.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Yang Li, Bo Dong, Enqing Chen, Xiaoli Wang, Ziwan Li, Yudi Zhao, Wei Zhao, Yishan Wang
Summary: A broadband all-optical tunable fiber microcavity filter, based on graphene/epoxy composite, is presented. The microcavity shows excellent all-optical controlability and has a strong optical Kerr effect and photothermal effect induced by the optical pump. The experimental results demonstrate a wavelength tuning range of 25.54 nm and a tuning step of -832 pm/mW.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
