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  • AIP Publishing  (188)
  • 1
    Online Resource
    Online Resource
    Taiwan axion search experiment with haloscope: Designs and operations
    AIP Publishing ; 2022
    In:  Review of Scientific Instruments Vol. 93, No. 8 ( 2022-08-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 93, No. 8 ( 2022-08-01)
    Abstract: We report on a holoscope axion search experiment near 19.6 µeV from the Taiwan Axion Search Experiment with Haloscope collaboration. This experiment is carried out via a frequency-tunable cavity detector with a volume V = 0.234 liter in a magnetic field B0 = 8 T. With a signal receiver that has a system noise temperature Tsys ≅ 2.2 K and an experiment time of about one month, the search excludes values of the axion–photon coupling constant gaγγ ≳ 8.1 × 10−14 GeV−1, a factor of 11 above the Kim–Shifman–Vainshtein–Zakharov benchmark model, at the 95% confidence level in the mass range of 19.4687–19.8436 µeV. We present the experimental setup and procedures to accomplish this search.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/5.0098783
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 2
    Online Resource
    Online Resource
    The pulsed high magnetic field facility and scientific research at Wuhan National High Magnetic Field Center
    AIP Publishing ; 2017
    In:  Matter and Radiation at Extremes Vol. 2, No. 6 ( 2017-11-01), p. 278-286
    Details
    In: Matter and Radiation at Extremes, AIP Publishing, Vol. 2, No. 6 ( 2017-11-01), p. 278-286
    Abstract: Wuhan National High Magnetic Field Center (WHMFC) at Huazhong University of Science and Technology is one of the top-class research centers in the world, which can offer pulsed fields up to 90.6 T with different field waveforms for scientific research and has passed the final evaluation of the Chinese government in 2014. This paper will give a brief introduction of the facility and the development status of pulsed magnetic fields research at WHMFC. In addition, it will describe the application development of pulsed magnetic fields in both scientific and industrial research.
    Type of Medium: Online Resource
    ISSN: 2468-2047 , 2468-080X
    URL: Article
    DOI: 10.1016/j.mre.2017.10.002
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2017
    detail.hit.zdb_id: 2858469-7
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  • 3
    Online Resource
    Online Resource
    DeePMD-kit v2: A software package for deep potential models
    AIP Publishing ; 2023
    In:  The Journal of Chemical Physics Vol. 159, No. 5 ( 2023-08-07)
    Details
    In: The Journal of Chemical Physics, AIP Publishing, Vol. 159, No. 5 ( 2023-08-07)
    Abstract: DeePMD-kit is a powerful open-source software package that facilitates molecular dynamics simulations using machine learning potentials known as Deep Potential (DP) models. This package, which was released in 2017, has been widely used in the fields of physics, chemistry, biology, and material science for studying atomistic systems. The current version of DeePMD-kit offers numerous advanced features, such as DeepPot-SE, attention-based and hybrid descriptors, the ability to fit tensile properties, type embedding, model deviation, DP-range correction, DP long range, graphics processing unit support for customized operators, model compression, non-von Neumann molecular dynamics, and improved usability, including documentation, compiled binary packages, graphical user interfaces, and application programming interfaces. This article presents an overview of the current major version of the DeePMD-kit package, highlighting its features and technical details. Additionally, this article presents a comprehensive procedure for conducting molecular dynamics as a representative application, benchmarks the accuracy and efficiency of different models, and discusses ongoing developments.
    Type of Medium: Online Resource
    ISSN: 0021-9606 , 1089-7690
    URL: Article
    DOI: 10.1063/5.0155600
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 3113-6
    detail.hit.zdb_id: 1473050-9
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  • 4
    Online Resource
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    Ferroelectrochemistry
    AIP Publishing ; 2021
    In:  APL Materials Vol. 9, No. 5 ( 2021-05-01)
    Details
    In: APL Materials, AIP Publishing, Vol. 9, No. 5 ( 2021-05-01)
    Abstract: 100 years have passed since the initiate of ferroelectrics, molecular ferroelectrics with homochirality. Although inorganic ceramics have gained widespread utilization, especially in electronic, optical, and energy harvesting devices, the development of a molecular ferroelectric is still in its infancy because of the difficulty in finding a new one, let alone controllably optimizing its performance. It is noteworthy that some recently developed chemical design approaches, including the ideas of quasi-spherical theory, introducing homochirality, and H/F substitution, significantly contribute to the chemical design as well as performance optimization of a wide range of molecular ferroelectrics. This, in fact, changes the way of discovering a new molecular ferroelectric from blind search into targeted design. In this Perspective, we lay out three key strategies for chemical design and performance optimization of molecular ferroelectrics, which are the vital components for ferroelectrochemistry and provide fresh insights into how to design a new molecular ferroelectric relying on the established methodology. This, undoubtedly, opens the floodgate in the development of molecular ferroelectrics, especially for their academic and commercial desire. We wish to briefly exhibit our systematical studies on the targeted design and performance optimization of molecular ferroelectrics and set off the trend of targeted design in the next 100 years for ferroelectrics.
    Type of Medium: Online Resource
    ISSN: 2166-532X
    URL: Article
    DOI: 10.1063/5.0051129
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2021
    detail.hit.zdb_id: 2722985-3
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  • 5
    Online Resource
    Online Resource
    Experimental evidences of topological surface states of β-Ag2Te
    AIP Publishing ; 2013
    In:  AIP Advances Vol. 3, No. 3 ( 2013-03-01)
    Details
    In: AIP Advances, AIP Publishing, Vol. 3, No. 3 ( 2013-03-01)
    Abstract: We present evidence of topological surface states in β-Ag2Te through first-principles calculations, periodic quantum interference effect and ambipolar electric field effect in single crystalline nanoribbon. Our first-principles calculations show that β-Ag2Te is a topological insulator with a gapless Dirac cone with strong anisotropy. To experimentally probe the topological surface state, we synthesized high quality β-Ag2Te nanoribbons and performed electron transport measurements. The coexistence of pronounced Aharonov-Bohm oscillations and weak Altshuler-Aronov-Spivak oscillations clearly demonstrates coherent electron transport around the perimeter of β-Ag2Te nanoribbon and therefore the existence of topological surface states, which is further supported by the ambipolar electric field effect for devices fabricated by β-Ag2Te nanoribbons. The experimental evidences of topological surface states and the theoretically predicted anisotropic Dirac cone of β-Ag2Te suggest that the material may be a promising candidate of topological insulator for fundamental study and future spintronic devices.
    Type of Medium: Online Resource
    ISSN: 2158-3226
    URL: Article
    DOI: 10.1063/1.4795735
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2013
    detail.hit.zdb_id: 2583909-3
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  • 6
    Online Resource
    Online Resource
    Progress in octahedral spherical hohlraum study
    AIP Publishing ; 2016
    In:  Matter and Radiation at Extremes Vol. 1, No. 1 ( 2016-01-01), p. 8-27
    Details
    In: Matter and Radiation at Extremes, AIP Publishing, Vol. 1, No. 1 ( 2016-01-01), p. 8-27
    Abstract: In this paper, we give a review of our theoretical and experimental progress in octahedral spherical hohlraum study. From our theoretical study, the octahedral spherical hohlraums with 6 Laser Entrance Holes (LEHs) of octahedral symmetry have robust high symmetry during the capsule implosion at hohlraum-to-capsule radius ratio larger than 3.7. In addition, the octahedral spherical hohlraums also have potential superiority on low backscattering without supplementary technology. We studied the laser arrangement and constraints of the octahedral spherical hohlraums, and gave a design on the laser arrangement for ignition octahedral hohlraums. As a result, the injection angle of laser beams of 50°–60° was proposed as the optimum candidate range for the octahedral spherical hohlraums. We proposed a novel octahedral spherical hohlraum with cylindrical LEHs and LEH shields, in order to increase the laser coupling efficiency and improve the capsule symmetry and to mitigate the influence of the wall blowoff on laser transport. We studied on the sensitivity of the octahedral spherical hohlraums to random errors and compared the sensitivity among the octahedral spherical hohlraums, the rugby hohlraums and the cylindrical hohlraums, and the results show that the octahedral spherical hohlraums are robust to these random errors while the cylindrical hohlraums are the most sensitive. Up till to now, we have carried out three experiments on the spherical hohlraum with 2 LEHs on Shenguang(SG) laser facilities, including demonstration of improving laser transport by using the cylindrical LEHs in the spherical hohlraums, spherical hohlraum energetics on the SGIII prototype laser facility, and comparisons of laser plasma instabilities between the spherical hohlraums and the cylindrical hohlraums on the SGIII laser facility.
    Type of Medium: Online Resource
    ISSN: 2468-2047 , 2468-080X
    URL: Article
    DOI: 10.1016/j.mre.2016.01.003
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2016
    detail.hit.zdb_id: 2858469-7
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  • 7
    Online Resource
    Online Resource
    Observation of Zeeman splitting effect in a laser-driven coil
    AIP Publishing ; 2022
    In:  Matter and Radiation at Extremes Vol. 7, No. 2 ( 2022-03-01)
    Details
    In: Matter and Radiation at Extremes, AIP Publishing, Vol. 7, No. 2 ( 2022-03-01)
    Abstract: The Zeeman splitting effect is observed in a strong magnetic field generated by a laser-driven coil. The expanding plasma from the coil wire surface is concentrated at the coil center and interacts with the simultaneously generated magnetic field. The Cu I spectral lines at wavelengths of 510.5541, 515.3235, and 521.8202 nm are detected and analyzed. The splittings of spectral lines are used to estimate the magnetic field strength at the coil center as ∼31.4 ± 15.7 T at a laser intensity of ∼5.6 × 1015 W/cm2, which agrees well with measurements using a B-dot probe. Some other plasma parameters of the central plasma disk are also studied. The temperature is evaluated from the Cu I spectral line intensity ratio, while the electron density is estimated from the Stark broadening effect.
    Type of Medium: Online Resource
    ISSN: 2468-2047 , 2468-080X
    URL: Article
    DOI: 10.1063/5.0060954
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2858469-7
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  • 8
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    High-performance low-temperature solution-processed InGaZnO thin-film transistors via ultraviolet-ozone photo-annealing
    AIP Publishing ; 2013
    In:  Applied Physics Letters Vol. 102, No. 19 ( 2013-05-13)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 102, No. 19 ( 2013-05-13)
    Abstract: Ultraviolet (UV)-ozone photo-annealing was applied to fabricate low-temperature high-performance solution-processed thin-film transistors (TFTs). With UV-ozone treatment at the optimal temperature of 300 °C, TFT devices showed an improved field-effect mobility of 1.73 cm2 V−1 s−1, a subthreshold slope (S) of 0.32 V dec−1, an on/off-current ratio greater than 1.3 × 107, and good operational bias-stress stability compared to those of InGaZnO TFT devices fabricated with only a conventional thermal-annealing process. The results of X-ray photoelectron spectroscopy and the maximum density of the surface states (Ns) confirm that the device improvement originates from reduced oxygen-related defects and improved electron trapping due to UV-ozone irradiation.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.4804993
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2013
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 9
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    Multiphoton autofluorescence spectral analysis for fungus imaging and identification
    AIP Publishing ; 2009
    In:  Applied Physics Letters Vol. 95, No. 4 ( 2009-07-27)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 95, No. 4 ( 2009-07-27)
    Abstract: We performed multiphoton imaging on fungi of medical significance. Fungal hyphae and spores of Aspergillus flavus, Micosporum gypseum, Micosoprum canis, Trichophyton rubrum, and Trichophyton tonsurans were found to be strongly autofluorescent but generate less prominent second harmonic signal. The cell wall and septum of fungal hyphae can be easily identified by autofluorescence imaging. We found that fungi of various species have distinct autofluorescence characteristics. Our result shows that the combination of multiphoton imaging and spectral analysis can be used to visualize and identify fungal species. This approach may be developed into an effective diagnostic tool for fungal identification.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.3189084
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2009
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 10
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    Numerical simulations of the mutual effect among the superconducting constituents in a levitation system with translational symmetry
    AIP Publishing ; 2014
    In:  Journal of Applied Physics Vol. 115, No. 8 ( 2014-02-28)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 115, No. 8 ( 2014-02-28)
    Abstract: By the introduction of a generalized magnetic vector potential, which contains the contributions of both the magnetic and electric parts, and the use of the Ampere's law within the quasistatic approximation as the state equation, the partial differential equations for governing the electromagnetic properties of superconductors as well as the surrounding coolant were established and numerically discretized by resorting to the finite-element technique and finite-difference scheme, respectively, in the spatial and temporal domain. In conjunction with an analytic method to calculate the magnetic field generated by permanent magnet, we compiled a numerical tool for performing an intricate study of the mutual effect among the superconducting constituents in a superconducting levitation system with translational symmetry. Taking a superconducting unit with three constituents inside as a practice, we simulated the electromagnetic responses of this unit while moving in the nonuniform magnetic field generated by permanent magnet guideway and, identified the influences of the mutual effect on the levitation force as well as on the distributions of the magnetic flux density, the supercurrent density, and the levitation force density by comparing to an envisaged reference, one constituent was simulated with all the rest absent to remove the mutual effect. The insights attained by the present study, mostly being inaccessible from the experiments, are aimed to provide useful implications for the design of a superconducting levitation system for the transit and analogous purposes, which usually employ multiple superconductors to achieve the desired capability.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.4867160
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2014
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
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