A kind of compact all-fiber-optic vector magnetic sensor is proposed and demonstrated. The consists a side-polished-fiber (SPF)-integrated with singlemode-no core-singlemode (SNS) fiber structure. section side-polished breaks the axially symmetry composite as-fabricated supports sensing has field strength sensitivity up to -2370 pm/mT over 2-6 mT range. physical mechanism that modal interference strongly influenced by refractive index (RI) near surface. advantages lie in low cost, simple...

A novel, compact, and easy fabrication vector magnetic field sensor has been proposed investigated. The consists of a U-bent single-mode fiber fixed in magnetic-fluid-filled vessel. Neither mechanical modification nor additional grating is needed during the fabrication. results show that response fluid to can be used measure direction intensity via whispering gallery modes supported by structure with suitable bending radius. sensitivity 0.251 nm/°, maximum 0.517 nm/mT. Besides, this work...

Abstract A novel fiber-optic vector magnetic field sensor and its sensing quality dependent of fabrication method has been proposed investigated. The two surfaces on the tip a multimode fiber, which is used as probe. By plating different thickness gold film surfaces, surface plasmon resonance (SPR) can be generated signal reflected by well. Meanwhile, fluid (MF) sensitive material packed around experimental results prove that response MF to external sense intensity direction via monitoring...

A kind of dual-parameter sensor based on magnetic-fluid-coated nonadiabatic tapered microfiber (NTF) cascaded with fiber Bragg grating (FBG) is proposed and experimentally demonstrated. Simultaneous measurement magnetic field temperature realized by monitoring the variation NTF interference spectrum FBG characteristic dip. In range 0–18 mT, highest sensitivity can reach 1.159 nm/mT. The maximum up to −1.737 nm/°C in 25-50 °C. interferometer will find extensive application prospect due its...

A kind of composite structure consisting Mach-Zehnder interferometer (MZI) cascaded with fiber Bragg grating (FBG) is proposed for simultaneous measurement magnetic field and temperature. The MZI consists a pair up-tapered joints, which are used to excite high order modes re-couple them the core. immersed in fluid make it magnetically sensitive. FBG employed temperature compensation. Simultaneous can be achieved by monitoring transmission spectra FBG. sensitivity sensing up 407.82 pm/mT...

A kind of ultrasensitive magnetic field sensor based on microfiber coupler and fluid (MF) is proposed investigated. As the working wavelength near birefringence-induced dispersion turning point (B-DTP), sensitivity has been enhanced considerably maximum can achieve −97.856 nm/mT. By tracking B-DTP, problem high but narrow detection range be solved. The temperature structure 0.816 nm/℃. advantages extremely sensitivity, which potential applications in high-precision measurement.

Abstract Salt stress is a common abiotic factor that restricts plant growth and development. As halophyte, Tamarix hispida good model for exploring salt-tolerance genes regulatory mechanisms. DNA-binding with one finger (DOF) an important transcription (TF) influences controls various signaling substances involved in diverse biological processes related to development, but the mechanisms of DOF TFs response salt are largely unknown T. hispida. In present study, newly identified Dof gene,...

Macrophages' function play a vital role in the progression of atherosclerosis (AS), and miRNAs can modulate inflammatory cytokine secretion, lipid uptake apoptosis macrophages. miR-152 is down-regulated serum samples AS patients inhibits migration human umbilical vein endothelial cell, suggesting that exerts atherogenesis. Nevertheless, reaction macrophages remains unexplored. Besides, bioinformatics shows KLF5 direct target miR-152. As result, objective this study to investigate effects...

Based on the anisotropic distribution of magnetic nanoparticles within fluid under an external field, a novel, to best our knowledge, vector field sensor based orthogonal offset spliced optical fiber structure cascaded with taper has been proposed. The expression interference dip wavelength respect is formulated, and dual-parameter sensing matrix established. Simultaneous measurement intensity direction realized. corresponding physical principle clarified. properties are experimentally...

A polarization beam splitter (PBS) based on a magnetic fluid-filled dual-core photonic crystal fiber is characterized. This the first time that anisotropy of fluid applied to splitter. The designed device able separate x and y modes completely by applying an external field. When length 9.905 mm (or 16.795 mm), maximum bandwidth effective working wavelength 26 nm 70 nm) tunable field width approximately 5 Oe 165 Oe) corresponding range from 24 29 135 300 Oe). By tuning field, proposed may be...

A π phase-shifted fiber Bragg grating (PS-FBG) with reduced diameter is proposed for sensing applications.To achieve high sensitivity, etching and side polishing are used to decrease the of PS-FBG.The transmission peak undergoes a clear redshift refractive index increase, sensitivity 3815 pm/RIU when surrounding ranges from 1.41514 1.45450.The structure also sensitive ambient temperature 25 55 °C.Experimental results show that sensitivities 12.26, 12.54, 19.51 pm/℃ PS-FBGs diameters 125, 87,...

Thalictrum baicalense Turcz. ex Ledeb. is a well-known herbaceous perennid that has been used as traditional medicine to treat influenza, hepatitis, and detoxfeaction. In this study, we release detail the complete chloroplast genome sequences of T. baicalense. The whole was 155,859 bp in length comprised 130 genes, including 84 protein-coding 37 tRNA eight rRNA genes. had GC content 38.39%. phylogenetic relationships inferred baicalense, tenue, minus petaloideum are closely related each...

为解决干涉型光纤应变传感器自由光谱范围较小或干涉条纹精细度较低等问题，提出了一种基于单拉锥光纤布拉格光栅的法布里-珀罗腔的应变传感结构及其改进方案。利用啁啾光纤布拉格光栅不同位置反射不同波长的特性，形成腔长随波长连续变化的法布里-珀罗腔，得到了无穷大的自由光谱范围且谐振谷精细度高。数值计算结果表明，应变传感灵敏度与拉锥光纤的腰区直径和栅区长度正相关。在0～300 με范围内，当腰区直径为光纤直径的3/25，栅区长度为30 mm时，应变传感灵敏度为7.05 pm/με。该结果对其他干涉型传感结构的设计具有一定的参考价值。

Nuclear power equipment has high value, heavy weight and small size, general designed two saddles for supporting. Due to the restrictions of deck strength, maritime transport requires H-beams distributed load. This paper based on real transportation instance, use ANSYS Workbench its DX module get an optimal model including H-beam section parameters distribution under premise meet ship's strength stiffness. The final had used in actual which testified method right. mode provides technical...

A kind of photonic crystal (PC) micro-cavity sensor based on magnetic fluid (MF) filling is designed with simulation model. Generally, many sensors’ designs are a universal temperature in the whole structure. However, strong photothermal effect high Q micro-cavities will lead to different temperatures between cavities and environment inevitably. In theoretical PC designs, researchers neglected cavities. This simple hypothesis probably failure design get wrong temperature. Moreover, few or...