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3. Ultrahigh-performance vector magnetic field sensor with wedge-shaped fiber tip based on surface plasmon resonance and magnetic fluid

Author

Hao Zijian, Li Yongxi, Pu Shengli, Wang Jia, Chen Fan, and Lahoubi Mahieddine

Subjects
magnetic field, magnetic fluid, reflection-type, sensor probe, surface plasmon resonance, Physics, QC1-999
Abstract

A novel fiber-optic vector magnetic field sensor and its sensing quality dependent of fabrication method has been proposed and investigated. The proposed sensor has two surfaces on the tip of a multimode fiber, which is used as the sensing probe. By plating different thickness of gold film on the surfaces, surface plasmon resonance (SPR) can be generated and the signal can be reflected by the surfaces as well. Meanwhile, magnetic fluid (MF) as the magnetic field sensitive material is packed around the sensing probe. The experimental results prove that the response of MF to external magnetic field can be used to sense magnetic field intensity and direction via monitoring the dip wavelength of SPR. The obtained refractive index (RI) sensitivities are 2105 nm/RIU (RI range: 1.332–1.365) and 6692 nm/RIU (RI range: 1.372–1.411), magnetic field intensity sensitivities are 11.67 nm/mT (0°), and −0.47 nm/mT (90°). Besides, the proposed sensing probe is ultracompact and the footprint is extremely small (the length of sensing part is only 615 μm), which is very helpful for magnetic field detection in narrow space and gradient field.

Published
2022
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14. The Polygenic Map of Keloid Fibroblasts Reveals Fibrosis-Associated Gene Alterations in Inflammation and Immune Responses

Author

Li, Yang, Li, Min, Qu, Caijie, Li, Yongxi, Tang, Zhanli, Zhou, Zhike, Yu, Zengzhao, Wang, Xu, Xin, Linlin, and Shi, Tongxin

Subjects
genome-wide expression, Immunology, immune response, fibroblasts, Protein Interaction Mapping, Humans, Immunology and Allergy, Genetic Predisposition to Disease, Protein Interaction Maps, molecular alterations, skin and connective tissue diseases, Original Research, Gene Expression Profiling, Immunity, Computational Biology, RC581-607, Fibrosis, keloid, Gene Ontology, Gene Expression Regulation, inflammation, Disease Susceptibility, Immunologic diseases. Allergy, Transcriptome, Genome-Wide Association Study, Signal Transduction
Abstract

Due to many inconsistencies in differentially expressed genes (DEGs) related to genomic expression changes during keloid formation and a lack of satisfactory prevention and treatment methods for this disease, the critical biomarkers related to inflammation and the immune response affecting keloid formation should be systematically clarified. Normal skin/keloid scar tissue-derived fibroblast genome expression data sets were obtained from the Gene Expression Omnibus (GEO) and ArrayExpress databases. Hub genes have a high degree of connectivity and gene function aggregation in the integration network. The hub DEGs were screened by gene-related protein–protein interactions (PPIs), and their biological processes and signaling pathways were annotated to identify critical biomarkers. Finally, eighty-one hub DEGs were selected for further analysis, and some noteworthy signaling pathways and genes were found to be closely related to keloid fibrosis. For example, IL17RA is involved in IL-17 signal transduction, TIMP2 and MMP14 activate extracellular matrix metalloproteinases, and TNC, ITGB2, and ITGA4 interact with cell surface integrins. Furthermore, changes in local immune cell activity in keloid tissue were detected by DEG expression, immune cell infiltration, and mass CyTOF analyses. The results showed that CD4+ T cells, CD8+ T cells and NK cells were abnormal in keloid tissue compared with normal skin tissue. These findings not only support the key roles of fibrosis-related pathways, immune cells and critical genes in the pathogenesis of keloids but also expand our understanding of targets that may be useful for the treatment of fibrotic diseases.

Published
2022

22. Non-fullerene acceptor with low energy loss and high external quantum efficiency: towards high performance polymer solar cells

Author

Li, Yongxi, Liu, Xiaodong, Wu, Fu-Peng, Zhou, Yi, Jiang, Zuo-Quan, Song, Bo, Xia, Yuxin, Zhang, Zhi-Guo, Gao, Feng, Inganäs, Olle, Li, Yongfang, Liao, Liang-Sheng, Li, Yongxi, Liu, Xiaodong, Wu, Fu-Peng, Zhou, Yi, Jiang, Zuo-Quan, Song, Bo, Xia, Yuxin, Zhang, Zhi-Guo, Gao, Feng, Inganäs, Olle, Li, Yongfang, and Liao, Liang-Sheng

Abstract

A non-fullerene electron acceptor bearing a fused 10-heterocyclic ring (indacenodithiophenoindacenodithiophene) with a narrow band gap (similar to 1.5 eV) was designed and synthesized. It possesses excellent planarity and enhanced effective conjugation length compared to previously reported fused-ring electron acceptors. When this acceptor was paired with PTB7-Th and applied in polymer solar cells, a power conversion efficiency of 6.5% was achieved with a high open circuit voltage of 0.94 V. More significantly, an energy loss as low as 0.59 eV and an external quantum efficiency as high as 63% were obtained simultaneously., Funding Agencies|National Natural Science Foundation of China [21504062, 21202114, 21204054, 51303118, 91333204]; Natural Science Foundation of Jiangsu Province [BK20130289]; China Postdoctoral Science Foundation Funded Project [2015M581853]; Jiangsu Province Postdoctoral Science Foundation Funded Project [1501024B]; Priority Academic Program Development of Jiangsu Higher Education Institutions; Programs Foundation of the Ministry of Education of China [20133201120008]; Beijing National Laboratory for Molecular Sciences [20140112]; State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials; CSC; Open Research Fund of State Key Lab of Silicon Materials (Zhejiang University); Knut and Alice Wallenberg foundation; Science Council, Sweden

Published
2016
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23. A fused-ring based electron acceptor for efficient non-fullerene polymer solar cells with small HOMO offset

Author

Li, Yongxi, Qian, Deping, Zhong, Lian, Lin, Jiu-Dong, Jiang, Zuo-Quan, Zhang, Zhi-Guo, Zhang, Zhanjun, Li, Yongfang, Liao, Liang-Sheng, Zhang, Fengling, Li, Yongxi, Qian, Deping, Zhong, Lian, Lin, Jiu-Dong, Jiang, Zuo-Quan, Zhang, Zhi-Guo, Zhang, Zhanjun, Li, Yongfang, Liao, Liang-Sheng, and Zhang, Fengling

Abstract

A non-fullerene electron acceptor bearing a novel backbone with fused 10-heterocyclic ring (in-dacenodithiopheno-indacenodiselenophene), denoted by IDTIDSe-IC is developed for fullerene free polymer solar cells. IDTIDSe-IC exhibits a low band gap (E-g=1.52 eV) and strong absorption in the 600850 nm region. Combining with a large band gap polymer J51 (E-g=1.91 eV) as donor, broad absorption coverage from 300 nm to 800 nm is obtained due to complementary absorption of J51 and IDTIDSe-IC, which enables a high PCE of 8.02% with a V-oc of 0.91 V, a J(SC) of 15.16 mA/cm(2) and a FF of 58.0% in the corresponding PSCs. Moreover, the EQE of 50-65% is achieved in the absorption range of IDTIDSe-IC with only about 0.1 eV HOMO difference between J51 and IDTIDSe-IC. (C) 2016 Elsevier Ltd. All rights reserved., Funding Agencies|National Natural Science Foundation of China [21504062, 21572152]; China Postdoctoral Science Foundation [2015M581853]; Jiangsu Province Postdoctoral Science Foundation [1501024B]; Vinnova [2015-04751]; China Scholarship Council (CSC) [201306730002]; Swedish Research Council (VR) [621-2013-5561]; Swedish Energy Agency [EM 42033-1]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [2009 00971]; Collaborative Innovation Center of Suzhou Nano Science and Technology; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)

Published
2016
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