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  • Online Resource  (24)
  • IOP Publishing  (24)
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  • IOP Publishing  (24)
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  • 1
    Online Resource
    Online Resource
    Critical properties of the 3D-Heisenberg ferromagnet \chem{CdCr_{2}Se_{4}}
    IOP Publishing ; 2010
    In:  EPL (Europhysics Letters) Vol. 91, No. 5 ( 2010-09-01), p. 57001-
    Details
    In: EPL (Europhysics Letters), IOP Publishing, Vol. 91, No. 5 ( 2010-09-01), p. 57001-
    Type of Medium: Online Resource
    ISSN: 0295-5075 , 1286-4854
    URL: Article
    DOI: 10.1209/0295-5075/91/57001
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2010
    detail.hit.zdb_id: 1465366-7
    detail.hit.zdb_id: 165776-8
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  • 2
    Online Resource
    Online Resource
    A Cross-Domain Authentication and Authorization Model for New Power System Based on Trust Management
    IOP Publishing ; 2023
    In:  Journal of Physics: Conference Series Vol. 2496, No. 1 ( 2023-05-01), p. 012012-
    Details
    In: Journal of Physics: Conference Series, IOP Publishing, Vol. 2496, No. 1 ( 2023-05-01), p. 012012-
    Abstract: The access of new power service terminals brings about a new demand for cross-domain and cross-system security access. Therefore, this paper proposes a cross-domain authentication and authorization model for a new power system based on trust management, which is realized through the cooperation of certificate authority, authentication module, authorization module, and trust management module. Firstly, the model proposed in this paper includes a cross-domain authentication method, which realizes authentication between domains by issuing and verifying tokens for terminals with sufficient trust. Secondly, the model includes an authorization method based on attribute and trust value, which realizes the authorization of the terminal through attribute policy and trust evaluation. Finally, a trust value calculation method for terminal cross-domain access is included in the model. In this paper, the proposed model and method are simulated to demonstrate the correctness and effectiveness of the model. The experimental results show that the model has the advantages of universality, efficiency, and ease of management, and the terminal can access resources safely and efficiently across domains.
    Type of Medium: Online Resource
    ISSN: 1742-6588 , 1742-6596
    URL: Article
    DOI: 10.1088/1742-6596/2496/1/012012
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 2166409-2
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Pressure-driven dynamical microfluidic pumping system for droplet production
    IOP Publishing ; 2022
    In:  Journal of Instrumentation Vol. 17, No. 10 ( 2022-10-01), p. P10038-
    Details
    In: Journal of Instrumentation, IOP Publishing, Vol. 17, No. 10 ( 2022-10-01), p. P10038-
    Abstract: Compact and affordable microfluidic pumping is critical for point-of-care applications. Here we proposed a data driven dynamical system to build up a pressure-driven microfluidic pump with a small budget. Firstly, a precision flow sensor is required to obtain the dynamic flow rates as the responses to the driven pressures. Then the flow rate dataset under varying operation pressures is used for data training and model-based system identification. With a first-order or second-order transfer function model, the specifications of pressure-driven microfluidic pumping system are analyzed by the model-based system identification algorithm. Also, all the specifications including the gain, time constant, natural frequency, and damping ratio are updated online as new test data are introduced from more experimental trials. To perform a non-bulky design purpose, the data training system identification is taken on a commercial smartphone. Once the training performance is satisfied, the pressure-driven system could be operated without any flow sensors. The system is used for two-phase flow controls as a demonstration, showing a rapid response of pumping. Dynamic characteristics and the effects of flow resistance on the pumping performance are analyzed to verify its suitability for a wide range of microfluidic applications.
    Type of Medium: Online Resource
    ISSN: 1748-0221
    URL: Article
    DOI: 10.1088/1748-0221/17/10/P10038
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2235672-1
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  • 4
    Online Resource
    Online Resource
    AC electrothermal mixing for high conductive biofluids by arc-electrodes
    IOP Publishing ; 2018
    In:  Journal of Micromechanics and Microengineering Vol. 28, No. 6 ( 2018-06-01), p. 065004-
    Details
    In: Journal of Micromechanics and Microengineering, IOP Publishing, Vol. 28, No. 6 ( 2018-06-01), p. 065004-
    Type of Medium: Online Resource
    ISSN: 0960-1317 , 1361-6439
    URL: Article
    DOI: 10.1088/1361-6439/aab39b
    RVK:
    ZG 1100
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2018
    detail.hit.zdb_id: 1480280-6
    detail.hit.zdb_id: 1069644-1
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  • 5
    Online Resource
    Online Resource
    Charge ordering melting and evidence for a metastable antiferromagnetic phase in Nd 0.5(1 − x ) Ca 0.5(1 + x ) Mn 1 − x Ti x O 3
    IOP Publishing ; 2006
    In:  Europhysics Letters (EPL) Vol. 74, No. 3 ( 2006-05), p. 506-511
    Details
    In: Europhysics Letters (EPL), IOP Publishing, Vol. 74, No. 3 ( 2006-05), p. 506-511
    Type of Medium: Online Resource
    ISSN: 0295-5075 , 1286-4854
    URL: Article
    DOI: 10.1209/epl/i2005-10561-8
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2006
    detail.hit.zdb_id: 1465366-7
    detail.hit.zdb_id: 165776-8
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    Online Resource
  • 6
    Online Resource
    Online Resource
    A review of shape memory alloy artificial muscles in bionic applications
    IOP Publishing ; 2023
    In:  Smart Materials and Structures Vol. 32, No. 10 ( 2023-10-01), p. 103001-
    Details
    In: Smart Materials and Structures, IOP Publishing, Vol. 32, No. 10 ( 2023-10-01), p. 103001-
    Abstract: As an important part of soft robots, artificial muscles have received increasing attention. And since artificial muscles are developed by imitating the characteristics of biological muscles, they are naturally suitable for bionic applications. Shape memory alloys (SMAs) have been widely used in the field of artificial muscles due to their high energy density, biocompatibility, corrosion resistance, and self-sensing properties. In this review, the bionic applications of SMA artificial muscles are classified and summarized, and they are divided into two categories: bionic robotics (animal imitation) and biomedical (human imitation) applications. In the part of bionic robots, we summarize the applications of SMA artificial muscles in bionic robots such as flying, jumping, walking, crawling and swimming robots according to the motion characteristics. In the part of biomedical applications, we summarize the applications of SMA artificial muscles in various parts of the human body. In addition, this review also counts the proportion of SMA wires and springs used in applications, and provides a reference for the subsequent selection of SMA wires and springs. Finally, the challenges and opportunities of SMA artificial muscles are summarized and prospected.
    Type of Medium: Online Resource
    ISSN: 0964-1726 , 1361-665X
    URL: Article
    DOI: 10.1088/1361-665X/acf1e8
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 1115038-5
    detail.hit.zdb_id: 2002821-0
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  • 7
    Online Resource
    Online Resource
    Tricritical-point phase diagram in PrCu 9 Sn 4
    IOP Publishing ; 2022
    In:  Journal of Physics: Condensed Matter Vol. 34, No. 15 ( 2022-04-13), p. 155803-
    Details
    In: Journal of Physics: Condensed Matter, IOP Publishing, Vol. 34, No. 15 ( 2022-04-13), p. 155803-
    Abstract: Tricritical phenomenon appearing in multiple phases is a fundamental and attractive issue in condensed-matter physics. In this work, a field-modulated tricritical phenomenon is realized in single-crystal PrCu 9 Sn 4 . The magnetization under variable directions of field indicates strong magnetic anisotropy in PrCu 9 Sn 4 , which reveals ferromagnetic coupling for H // c . A paramagnetic-to-ferromagnetic magnetic transition occurs with H // c at T C = 11.7 K, which is evidenced to be of a first-ordered type. The systematical study of the critical behavior gives that β = 0.195(8), γ = 0.911(1), and δ = 0.0592(1) for H // c consistent with a tricritical mean-field model, which suggests a field-modulated tricritical phenomenon. A detailed H − T phase diagram around the tricritical point (TCP) is constructed for single-crystal PrCu 9 Sn 4 for H // c , where ferromagnetic state, forced ferromagnetic phase and paramagnetic state meet at the TCP ( H tr = 799 kOe, T tr = 11.3 K). The single-crystal PrCu 9 Sn 4 supplies a platform to deep investigate the field-modulated magnetic couplings and tricritical phenomenon.
    Type of Medium: Online Resource
    ISSN: 0953-8984 , 1361-648X
    URL: Article
    DOI: 10.1088/1361-648X/ac4f7c
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 1472968-4
    detail.hit.zdb_id: 228975-1
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  • 8
    Online Resource
    Online Resource
    Scaling of the magnetic entropy change in chiral helimagnetic YbNi 3 Al 9
    IOP Publishing ; 2020
    In:  Journal of Physics: Condensed Matter Vol. 32, No. 19 ( 2020-05-08), p. 195801-
    Details
    In: Journal of Physics: Condensed Matter, IOP Publishing, Vol. 32, No. 19 ( 2020-05-08), p. 195801-
    Type of Medium: Online Resource
    ISSN: 0953-8984 , 1361-648X
    URL: Article
    DOI: 10.1088/1361-648X/ab6e8f
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 1472968-4
    detail.hit.zdb_id: 228975-1
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  • 9
    Online Resource
    Online Resource
    Critical phenomenon of the layered chiral helimagnetic YbNi 3 Al 9
    IOP Publishing ; 2020
    In:  New Journal of Physics Vol. 22, No. 1 ( 2020-01-01), p. 013018-
    Details
    In: New Journal of Physics, IOP Publishing, Vol. 22, No. 1 ( 2020-01-01), p. 013018-
    Abstract: Two-dimensional layered YbNi 3 Al 9 exhibits a chiral helimagnetic ground state, which is a candidate for the field-modulated chiral magnetic soliton. In this work, the magnetism and critical phenomenon of YbNi 3 Al 9 are investigated. As H ⊥ c , a magnetic step with loop can be observed in the field-dependent magnetization, which may be corresponding to the possible chiral magnetic soliton phase transition. Based on the analysis of isothermal magnetization around T C , the critical exponents are obtained as β  = 0.1370(2), γ  = 1.7955(4), and δ  = 14.1043(7), which fulfill the Widom scaling relation and Rushbrooke’s law. Moreover, the obtained critical exponents are testified by the modified Arrott plot and scaling hypothesis. The critical exponents of YbNi 3 Al 9 are close to the theoretically prediction of 2D-Ising model with the spatial-dimensionality n  = 2 and spin-dimensionality d  = 1, indicating one-dimensional magnetic coupling in the two-dimensional framework. Based on universality scaling, we construct the detailed H – T phase diagram around the phase transition with H ⊥ c , which reveals that the field-induced magnetic transition for H ⊥ c is of the first-order type.
    Type of Medium: Online Resource
    ISSN: 1367-2630
    URL: Article
    DOI: 10.1088/1367-2630/ab62d4
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 1464444-7
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  • 10
    Online Resource
    Online Resource
    Molecular ammonia sensing of PEDOT:PSS/nitrogen doped MXene Ti 3 C 2 T x composite film at room temperature
    IOP Publishing ; 2022
    In:  Nanotechnology Vol. 33, No. 6 ( 2022-02-05), p. 065501-
    Details
    In: Nanotechnology, IOP Publishing, Vol. 33, No. 6 ( 2022-02-05), p. 065501-
    Abstract: The irrational NH 3 emission routinely poses a significant threat to human health and environmental protection even at low dose. In addition, high miniaturization and low power-consumption has been the critical requirements of Internet of Things. To meet these demands, it is greatly pressing to develop a novel gas sensor with the capability to detect trace NH 3 without external heating or light-irradiation elements. In this work, the organic conducting conjugated polymer PEDOT:PSS was combined with inorganic nitrogen-doped transition metal carbides and nitrides (N-MXene Ti 3 C 2 T x ) for chemiresistive NH 3 sensing at room temperature (20 o C). By means of the organic–inorganic n – p heterojunctions via the synergistic effect, the results show that the composite film sensor with the optimal mass ratio of 1:0.5 between N-MXene and PEDOT:PSS components delivered favorable NH 3 sensing performance than individual N-MXene or PEDOT:PSS counterparts in terms of higher response and quicker response/recovery speeds under 20 o C@36%RH air. Besides, decent repeatability, stability and selectivity were demonstrated. The incorporated N atoms served as excellent electron donors to promote the electron-transfer reactions and augment the sorption sites. Simultaneously, partial oxidation of MXene brought about some TiO 2 nanoparticles which acted as spacers to widen the interlayer spacing and probably suppress the MXene restacking during the film deposition, thus favoring the gas diffusion/penetration within the sensing layer and then a quick reaction kinetic. The modulation of consequent build-in field within the heterojunctions was responsible for the reversible NH 3 sensing. In addition, pre-adsorbed water molecules facilitated to establish a swift adsorption/desorption balance. The proposed strategy expanded the application range of MXene based composite materials and enrich the current sensing mechanisms of NH 3 gas sensors.
    Type of Medium: Online Resource
    ISSN: 0957-4484 , 1361-6528
    URL: Article
    DOI: 10.1088/1361-6528/ac33d3
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 1362365-5
    SSG: 11
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