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  1. Article ; Online: Spectral analysis of oxidation on localized surface plasmon resonance of copper nanoparticles thin film.

    Liu, Zhonghua / Xu, Bin / Cheng, Yuqing / Si, Mengting / Chu, Xiangqian / Sun, Mengtao / Fang, Yingcui

    Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

    2023  Volume 303, Page(s) 123202

    Abstract: Copper nanoparticles (CuNPs) possess localized surface plasmon resonance (LSPR) effect. Cu thin films composed of individual CuNPs exhibit stronger LSPR than the individual CuNPs due to the LSPR coupling among CuNPs. However, CuNPs are easy to be ... ...

    Abstract Copper nanoparticles (CuNPs) possess localized surface plasmon resonance (LSPR) effect. Cu thin films composed of individual CuNPs exhibit stronger LSPR than the individual CuNPs due to the LSPR coupling among CuNPs. However, CuNPs are easy to be oxidized, which results in the rapid LSPR damping of the CuNPs thin films. Simulation of the variations of the coupled LSPR of two adjacent CuNPs with the thickness of oxide shells formed during oxidation is of great importance for understanding the mechanisms of the strong LSPR of CuNPs thin films and its rapid attenuation. In this paper, Discrete-dipole approximation method is used to simulate the extinction spectra of two adjacent spherical CuNPs as a function of the shell thickness (t), the ambient refractive index (n), the diameter (D) of the CuNPs, and the inter-nanoparticle spacing (L). The calculation is validated by experimental results. According to our model, for a definite CuNPs thin films, the oxide shell thickness of CuNPs can be calculated only if the extinction spectra and the morphology are provided. Further, it is found when the oxide shell thickness is small (t/R< 0.3), increasing n and decreasing L/D have an obvious synergistic effect on enhancing the coupled LSPR, but this synergistic effect weakens with the deepening of oxidation, and disappeared when t/R > 0.5. This study provides a calculation method for coupled core-shell nanoparticles and throws light on the role of oxidation on the rapid damped LSPR of CuNPs thin films.
    Language English
    Publishing date 2023-07-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 210413-1
    ISSN 1873-3557 ; 0370-8322 ; 0584-8539 ; 1386-1425
    ISSN (online) 1873-3557
    ISSN 0370-8322 ; 0584-8539 ; 1386-1425
    DOI 10.1016/j.saa.2023.123202
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Mid-infrared Nb

    Pan, Yiming / Zhou, Hui / Zhang, Xingyu / Yu, Huiqin / Zhang, Lu / Si, Mengting / Li, Hao / You, Lixing / Wang, Zhen

    Optics express

    2022  Volume 30, Issue 22, Page(s) 40044–40052

    Abstract: Mid-infrared (MIR) single-photon detection is emerging as an important technology for various applications. Superconducting nanowire single photon detectors (SNSPDs) fabricated with superconducting films with energy gaps of a few meV are natural ... ...

    Abstract Mid-infrared (MIR) single-photon detection is emerging as an important technology for various applications. Superconducting nanowire single photon detectors (SNSPDs) fabricated with superconducting films with energy gaps of a few meV are natural broadband single-photon detectors. Recently, extending SNSPDs' operation wavelengths into the MIR region is highly attractive. γ-Nb
    Language English
    Publishing date 2022-09-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.472378
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Multichannel tunable narrowband mid-infrared optical filter based on phase-change material Ge

    Zhou, Kun / Cheng, Qiang / Lu, Lu / Li, Bowen / Song, Jinlin / Si, Mengting / Luo, Zixue

    Applied optics

    2020  Volume 59, Issue 3, Page(s) 595–600

    Abstract: The defect mode, which exists at the defect layer of a one-dimensional photonic crystal (1DPhC) heterostructure, provides the possibility of realizing narrowband transmission owing to its strong electromagnetic field localized effects. In this study, we ... ...

    Abstract The defect mode, which exists at the defect layer of a one-dimensional photonic crystal (1DPhC) heterostructure, provides the possibility of realizing narrowband transmission owing to its strong electromagnetic field localized effects. In this study, we numerically investigate the single- and multichannel narrowband filters in the mid-infrared region based on the defect mode by adding the monolayer and multilayer phase-change material
    Language English
    Publishing date 2020-03-26
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4522
    ISSN (online) 1539-4522
    DOI 10.1364/AO.380220
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Two-dimensional trilayer grating with a metal/insulator/metal structure as a thermophotovoltaic emitter.

    Song, Jinlin / Si, Mengting / Cheng, Qiang / Luo, Zixue

    Applied optics

    2016  Volume 55, Issue 6, Page(s) 1284–1290

    Abstract: A thermophotovoltaic system that converts thermal energy into electricity has considerable potential for applications in energy utilization fields. However, intensive emission in a wide spectral and angular range remains a challenge in improving system ... ...

    Abstract A thermophotovoltaic system that converts thermal energy into electricity has considerable potential for applications in energy utilization fields. However, intensive emission in a wide spectral and angular range remains a challenge in improving system efficiency. This study proposes the use of a 2D trilayer grating with a tungsten/silica/tungsten (W/SiO2/W) structure on a tungsten substrate as a thermophotovoltaic emitter. The finite-difference time-domain method is employed to simulate the radiative properties of the proposed structure. A broadband high emittance with an average spectral emittance of 0.953 between 600 and 1800 nm can be obtained for both transverse magnetic and transverse electric polarized waves. On the basis of the inductance-capacitance circuit model and dispersion relation analyses, this phenomenon is mainly considered as the combined contribution of surface plasmon polaritons and magnetic polaritons. A parametric study is also conducted on the emittance spectrum of the proposed structure, considering geometric parameters, polar angles, and azimuthal angles for both TM and TE waves. The study demonstrates that the emitter has good wavelength selectivity and polarization insensitivity in a wide geometric and angular range.
    Language English
    Publishing date 2016-02-20
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4522
    ISSN (online) 1539-4522
    DOI 10.1364/AO.55.001284
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Hydrogel-Coated Dental Device with Adhesion-Inhibiting and Colony-Suppressing Properties

    Peng, Liying / Chang, Li / Si, Mengting / Lin, Jiuxiang / Wei, Yan / Wang, Shutao / Liu, Hongliang / Han, Bing / Jiang, Lei

    ACS applied materials & interfaces. 2020 Feb. 06, v. 12, no. 8

    2020  

    Abstract: Bacterial infection is the main cause of implantation failure worldwide, and the importance of antibiotics on medical devices has been undermined because of antibiotic resistance. Antimicrobial hydrogels have emerged as a promising approach to combat ... ...

    Abstract Bacterial infection is the main cause of implantation failure worldwide, and the importance of antibiotics on medical devices has been undermined because of antibiotic resistance. Antimicrobial hydrogels have emerged as a promising approach to combat infections associated with medical devices and wound healing. However, hydrogel coatings that simultaneously possess both antifouling and antimicrobial attributes are scarce. Herein, we report an antimicrobial hydrogel that incorporates adhesion-inhibiting polyethylene glycol (PEG) and colony-suppressing chitosan (CS) as a dressing to combat bacterial infections. These two polymers have important environmentally benign characteristics including low toxicity, low volatility, and biocompatibility. Although hydrogels containing PEG and CS have been reported for applications in the fields of wound dressing, tissue repair, water purification, drug delivery, and scaffolds for bone regeneration, there still has been no report on the application of CS/PEG hydrogel coatings in dental applications. Herein, this biointerface shows superior activity in early-stage adhesion inhibition (98.8%, 5 h) and displays remarkably long-lasting colony-suppression activity (93.3%, 7 d). Thus, this novel nanomaterial, which has potential as a dual-functional platform with integrated antifouling and antimicrobial functions with excellent biocompatibility, might be used as a safe and effective antimicrobial coating in biomedical device applications.
    Keywords adhesion inhibition assay ; antibiotic resistance ; antibiotics ; bacterial infections ; biocompatibility ; chitosan ; coatings ; drugs ; hydrogels ; medical equipment ; nanomaterials ; polyethylene glycol ; tissue repair ; toxicity ; water purification
    Language English
    Dates of publication 2020-0206
    Size p. 9718-9725.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1944-8252
    DOI 10.1021/acsami.9b19873
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Hydrogel-Coated Dental Device with Adhesion-Inhibiting and Colony-Suppressing Properties.

    Peng, Liying / Chang, Li / Si, Mengting / Lin, Jiuxiang / Wei, Yan / Wang, Shutao / Liu, Hongliang / Han, Bing / Jiang, Lei

    ACS applied materials & interfaces

    2020  Volume 12, Issue 8, Page(s) 9718–9725

    Abstract: Bacterial infection is the main cause of implantation failure worldwide, and the importance of antibiotics on medical devices has been undermined because of antibiotic resistance. Antimicrobial hydrogels have emerged as a promising approach to combat ... ...

    Abstract Bacterial infection is the main cause of implantation failure worldwide, and the importance of antibiotics on medical devices has been undermined because of antibiotic resistance. Antimicrobial hydrogels have emerged as a promising approach to combat infections associated with medical devices and wound healing. However, hydrogel coatings that simultaneously possess both antifouling and antimicrobial attributes are scarce. Herein, we report an antimicrobial hydrogel that incorporates adhesion-inhibiting polyethylene glycol (PEG) and colony-suppressing chitosan (CS) as a dressing to combat bacterial infections. These two polymers have important environmentally benign characteristics including low toxicity, low volatility, and biocompatibility. Although hydrogels containing PEG and CS have been reported for applications in the fields of wound dressing, tissue repair, water purification, drug delivery, and scaffolds for bone regeneration, there still has been no report on the application of CS/PEG hydrogel coatings in dental applications. Herein, this biointerface shows superior activity in early-stage adhesion inhibition (98.8%, 5 h) and displays remarkably long-lasting colony-suppression activity (93.3%, 7 d). Thus, this novel nanomaterial, which has potential as a dual-functional platform with integrated antifouling and antimicrobial functions with excellent biocompatibility, might be used as a safe and effective antimicrobial coating in biomedical device applications.
    MeSH term(s) Anti-Infective Agents/chemistry ; Anti-Infective Agents/pharmacology ; Bacterial Adhesion/drug effects ; Coated Materials, Biocompatible/chemistry ; Coated Materials, Biocompatible/pharmacology ; Humans ; Hydrogels/chemistry ; Hydrogels/pharmacology ; Orthodontic Brackets/microbiology ; Streptococcus mutans/growth & development
    Chemical Substances Anti-Infective Agents ; Coated Materials, Biocompatible ; Hydrogels
    Language English
    Publishing date 2020-02-17
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.9b19873
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Local Electric-Field-Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO

    Si, Mengting / Wang, Dandan / Zhao, Rui / Pan, Du / Zhang, Chen / Yu, Caiyan / Lu, Xia / Zhao, Huiling / Bai, Ying

    Advanced science (Weinheim, Baden-Wurttemberg, Germany)

    2019  Volume 7, Issue 3, Page(s) 1902538

    Abstract: As one of the most promising cathodes for next-generation lithium ion batteries (LIBs), Li-rich materials have been extensively investigated for their high energy densities. However, the practical application of Li-rich cathodes is extremely retarded by ... ...

    Abstract As one of the most promising cathodes for next-generation lithium ion batteries (LIBs), Li-rich materials have been extensively investigated for their high energy densities. However, the practical application of Li-rich cathodes is extremely retarded by the sluggish electrode-electrolyte interface kinetics and structure instability. In this context, piezoelectric LiTaO
    Language English
    Publishing date 2019-12-17
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2808093-2
    ISSN 2198-3844
    ISSN 2198-3844
    DOI 10.1002/advs.201902538
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Large-area TaN superconducting microwire single photon detectors for X-ray detection.

    Yang, Can / Si, Mengting / Zhang, Xingyu / Yu, Aobo / Huang, Jia / Pan, Yiming / Li, Hao / Li, Lingyun / Wang, Zhen / Zhang, Shuo / Xia, Jingkai / Liu, Zhi / Guo, Han / You, Lixing

    Optics express

    2021  Volume 29, Issue 14, Page(s) 21400–21408

    Abstract: With the development of superconducting nanowire single photon detectors, increasing numbers of important applications are being explored, covering not only low-energy optical photon detection but also high-energy photon and particle detection. In this ... ...

    Abstract With the development of superconducting nanowire single photon detectors, increasing numbers of important applications are being explored, covering not only low-energy optical photon detection but also high-energy photon and particle detection. In this work, 100-nm-thick TaN superconducting microwire single photon detectors (SMSPDs) with large active areas were prepared for X-ray detection, and their response characteristics to X-rays were studied. The results showed that our TaN SMSPDs were able to detect X-rays at a wide range of bias currents and working temperatures. The detectors could distinguish different energy X-rays under suitable working conditions, and the energy resolving power was strongly related to the bias current.
    Language English
    Publishing date 2021-07-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.422581
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Specific Recognition of Uranyl Ion Employing a Functionalized Nanochannel Platform for Dealing with Radioactive Contamination

    Yang, Linsen / Qian, Yongchao / Kong, Xiang-Yu / Si, Mengting / Zhao, Yuanyuan / Niu, Bo / Zhao, Xiaolu / Wei, Yan / Jiang, Lei / Wen, Liping

    ACS applied materials & interfaces. 2019 Dec. 24, v. 12, no. 3

    2019  

    Abstract: Radioactive contamination is a highly concerning global environmental issue along with the development of the nuclear industry. On account of sophisticated operations and high cost of instrument detection methods, numerous efforts have been focused on ... ...

    Abstract Radioactive contamination is a highly concerning global environmental issue along with the development of the nuclear industry. On account of sophisticated operations and high cost of instrument detection methods, numerous efforts have been focused on rapid and simple detection of pollution elements and uranium is the most common one. It is an enormous challenge to push the limit of determination as low as possible while carrying out ultrasensitive detection. Here, we report an intelligent platform based on functionalized solid nanochannels to monitor ultratrace uranyl ions. The platform has a detection limit of 1 fM, which is far below the value that traditional instrumental methods can reach. What is more, the system also exhibits uranyl removal property. The mesenchymal stem cells cultivated in media containing uranyl can achieve excellent viability in the presence of the membranes. This work provides a new choice for handling global radioactive contamination of water.
    Keywords detection limit ; mesenchymal stromal cells ; radioactively contaminated water ; uranium ; uranyl ions
    Language English
    Dates of publication 2019-1224
    Size p. 3854-3861.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1944-8252
    DOI 10.1021/acsami.9b19544
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Ag Nanoparticle-Induced Oxidative Dimerization of Thiophenols: Efficiency and Mechanism.

    Li, Huanhuan / Si, Mengting / Liu, Lihua / Chu, Xiangqian / Wang, Shuai / Wan, Lei / Yan, Rong / Sun, Mengtao / Fang, Yingcui

    Langmuir : the ACS journal of surfaces and colloids

    2018  Volume 34, Issue 38, Page(s) 11347–11353

    Abstract: By oxidation of silver nanoparticles (AgNPs) in two ways: thermal oxidation (TO) in molecular oxygen and cool oxidation in oxygen plasma (i.e., oxygen plasma irradiation, OPI), the efficiency and mechanism of visible light-induced selective ... ...

    Abstract By oxidation of silver nanoparticles (AgNPs) in two ways: thermal oxidation (TO) in molecular oxygen and cool oxidation in oxygen plasma (i.e., oxygen plasma irradiation, OPI), the efficiency and mechanism of visible light-induced selective transformation of 4-aminothiophenol (PATP) to 4,4'-dimercaptoazobenzene (DMAB) on the surface of AgNPs was explored. On the basis of the evolution of surface-enhanced Raman scattering (SERS) spectrum of PATP (10
    Language English
    Publishing date 2018-09-13
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2005937-1
    ISSN 1520-5827 ; 0743-7463
    ISSN (online) 1520-5827
    ISSN 0743-7463
    DOI 10.1021/acs.langmuir.8b02068
    Database MEDical Literature Analysis and Retrieval System OnLINE

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