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  • AIP Publishing  (546)
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  • 1
    Online Resource
    Online Resource
    Organic thin film memcapacitors
    AIP Publishing ; 2019
    In:  Applied Physics Letters Vol. 114, No. 4 ( 2019-01-28)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 114, No. 4 ( 2019-01-28)
    Abstract: Organic thin film memcapacitors are designed and implemented by an organic multilayered structure, consisting of a semiconducting carrier accumulation layer and a polymer electret charge trapping layer. The capacitive states of the device can continuously and reversibly change upon programming/erasing at high biases, whereas they show nonvolatility upon reading at low biases or power off. The memcapacitive characteristics are ascribed to the modulation of the carrier accumulation threshold resulting from the cumulative and reversible charge trapping in the polymer electret layer. The organic thin film memcapacitors may provide more opportunities for developing organic-based synaptic electronic devices.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.5080115
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 2
    Online Resource
    Online Resource
    The effects of incident light wavelength difference on the collective stimulated Brillouin scattering in plasmas
    AIP Publishing ; 2023
    In:  Matter and Radiation at Extremes Vol. 8, No. 5 ( 2023-09-01)
    Details
    In: Matter and Radiation at Extremes, AIP Publishing, Vol. 8, No. 5 ( 2023-09-01)
    Abstract: The first laser–plasma interaction experiment using lasers of eight beams grouped into one octad has been conducted on the Shenguang Octopus facility. Although each beam intensity is below its individual threshold for stimulated Brillouin backscattering (SBS), collective behaviors are excited to enhance the octad SBS. In particular, when two-color/cone lasers with wavelength separation 0.3 nm are used, the backward SBS reflectivities show novel behavior in which beams of longer wavelength achieve higher SBS gain. This property of SBS can be attributed to the rotation of the wave vectors of common ion acoustic waves due to the competition of detunings between geometrical angle and wavelength separation. This mechanism is confirmed using massively parallel supercomputer simulations with the three-dimensional laser–plasma interaction code LAP3D.
    Type of Medium: Online Resource
    ISSN: 2468-2047 , 2468-080X
    URL: Article
    DOI: 10.1063/5.0151372
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2023
    detail.hit.zdb_id: 2858469-7
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  • 3
    Online Resource
    Online Resource
    Recent research progress of laser plasma interactions in Shenguang laser facilities
    AIP Publishing ; 2019
    In:  Matter and Radiation at Extremes Vol. 4, No. 5 ( 2019-09-01)
    Details
    In: Matter and Radiation at Extremes, AIP Publishing, Vol. 4, No. 5 ( 2019-09-01)
    Abstract: We report experimental research on laser plasma interaction (LPI) conducted in Shenguang laser facilities during the past ten years. The research generally consists of three phases: (1) developing platforms for LPI research in mm-scale plasma with limited drive energy, where both gasbag and gas-filled hohlraum targets are tested; (2) studying the effects of beam-smoothing techniques, such as continuous phase plate and polarization smoothing, on the suppression of LPI; and (3) exploring the factors affecting LPI in integrated implosion experiments, which include the laser intensity, gas-fill pressure, size of the laser-entrance hole, and interplay between different beam cones. Results obtained in each phase will be presented and discussed in detail.
    Type of Medium: Online Resource
    ISSN: 2468-2047 , 2468-080X
    URL: Article
    DOI: 10.1063/1.5092446
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2858469-7
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  • 4
    Online Resource
    Online Resource
    Investigation on laser plasma instability of the outer ring beams on SGIII laser facility
    AIP Publishing ; 2019
    In:  AIP Advances Vol. 9, No. 9 ( 2019-09-01)
    Details
    In: AIP Advances, AIP Publishing, Vol. 9, No. 9 ( 2019-09-01)
    Abstract: In order to study the laser plasma instabilities (LPIs) in the context of some novel six-side laser-driven indirect designs like the six-cylinder-port hohlraum and the three-axis cylindrical hohlraum, where the laser beams inject in hohlraum with a large angle. LPI experiments in cylindrical hohlraum with only outer beams were designed and performed based on the current laser arrangement condition of SGIII laser facility for the first time. Stimulated Brillouin backscatter (SBS) was found to be the dominant instability with high instantaneous reflectivity in experiments. A typical feature was obtained in the time-resolved spectra of SBS, which maintained similar for different laser intensities of the interaction beam. The experimental data are analyzed by the hydrodynamic simulations combined with HLIP code, which is based on the ray-tracing model. By analysis of experimental data, it is argued that the mixture of gas and Au in the region of their interface is important to SBS, which indicates the need for the mixture model between the filled gas and the high Z plasma from hohlraum wall in the hydrodynamic simulations. Nonlinear saturation of SBS as well as the smoothed beam are also discussed here. Our effective considerations of the ions pervasion effect and the smoothed beam provide utilitarian ways for improvement of the current ray-tracing method.
    Type of Medium: Online Resource
    ISSN: 2158-3226
    URL: Article
    DOI: 10.1063/1.5087936
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2583909-3
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  • 5
    Online Resource
    Online Resource
    Electrical control of ON–OFF magnetism and exchange bias via reversible ionic motion
    AIP Publishing ; 2022
    In:  Applied Physics Letters Vol. 120, No. 8 ( 2022-02-21)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 120, No. 8 ( 2022-02-21)
    Abstract: The lithium-based magneto-ionic effect is an emerging and promising way to control magnetism. Here, a lithium-ion battery-structure is adopted to control the magnetic properties of the Co/CoO bilayer. Using operando magnetometry, we performed a reversible toggling of lithium ion induced magnetic phase transition between nano-Co (superparamagnetism) and CoO (antiferromagnetism), which enables an ON–OFF magnetism switching. On this basis, a robust modulation of exchange bias by electric field at low temperature is achieved. In addition, reversible tuning of coercivity and magnetization up to 71% and 118%, respectively, in a Co/CoO bilayer at room temperature are performed. This work provides a more efficient means to modulate antiferromagnetism and exchange bias, facilitating the development of antiferromagnetic spintronics.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/5.0084190
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 6
    Online Resource
    Online Resource
    Competitive excitation and osmotic-pressure-mediated control of lasing modes in cholesteric liquid crystal microshells
    AIP Publishing ; 2017
    In:  Applied Physics Letters Vol. 110, No. 22 ( 2017-05-29)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 110, No. 22 ( 2017-05-29)
    Abstract: We examined the end-pumped lasing behaviors of dye doped cholesteric liquid crystal (DDCLC) microshells which were fabricated by glass capillary microfluidics. Several kinds of mode resonances, including distributed feedback, Fabry–Pérot (FP), and whispering gallery (WG) modes, can be robustly constructed in each individual DDCLC microshell by varying the beam diameter, namely, tuning the DDCLC gain area. The FP and WG modes were further confirmed experimentally, and the corresponding lasing mechanisms are clearly revealed from the unique material characteristics of DDCLC and the geometrical structure of the microshell. Additionally, we demonstrated that the osmotic pressure can be used to shrink/expand the microshell, productively tuning the excitation of lasing modes in a controlled manner. We wish our findings can provide a new insight into the design of DDCLC microlasers with tunable optical properties.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.4984743
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2017
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 7
    Online Resource
    Online Resource
    Magnetic field based actuation and amalgamation of ferrofluid droplets on hydrophobic surface: An experimental and numerical study
    AIP Publishing ; 2020
    In:  Physics of Fluids Vol. 32, No. 11 ( 2020-11-01)
    Details
    In: Physics of Fluids, AIP Publishing, Vol. 32, No. 11 ( 2020-11-01)
    Abstract: This article presents a detailed experimental analysis along with numerical simulations to provide the information about shape evolutions and mechanism of actuation and amalgamation of the ferrofluid droplets deposited on a hydrophobic surface by moving a permanent magnet. To validate the numerical methods used in this article, a benchmark phenomenon of a sessile droplet spreading under the effect of a non-uniform magnetic field is first simulated, and the results are compared with available experimental observations. To further ensure the accuracy of experimental and numerical techniques and to understand the wetting properties and spreading behavior of non-stationary ferrofluid droplets, a prototype demonstration of the merging droplets on a hydrophobic solid surface in the presence of a permanent magnet is designed. It is observed that for hydrophobic surfaces, the merging droplets entrap an air bubble at the time of first contact. Moreover, the physics behind the transient variations of droplet morphology and the effect of the state-of-the-art parameters on droplet actuation are also discussed. The force evaluation, energy variations, velocity contours, and velocity vectors of the moving droplet are provided to understand the internal behavior of droplet mobility. Experiments are performed several times with different speeds of moving a magnet to find the critical velocity when the droplet fails to follow the magnet motion. While doing so, we encounter an anomalous phenomenon of thread formation and daughter droplet generation at the receding end of the sliding droplet. A phase diagram is also provided in the end, which describes different regions of the sliding phenomenon.
    Type of Medium: Online Resource
    ISSN: 1070-6631 , 1089-7666
    URL: Article
    DOI: 10.1063/5.0029253
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 1472743-2
    detail.hit.zdb_id: 241528-8
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  • 8
    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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  • 9
    Online Resource
    Online Resource
    Photonic band gap in (Pb,La)(Zr,Ti)O3 inverse opals
    AIP Publishing ; 2003
    In:  Applied Physics Letters Vol. 82, No. 21 ( 2003-05-26), p. 3617-3619
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 82, No. 21 ( 2003-05-26), p. 3617-3619
    Abstract: (Pb,La)(Zr,Ti)O 3 (PLZT) inverse opal photonic crystals were synthesized by a process of self-assembly in combination with a sol-gel technique. In this process, PLZT precursors were infiltrated into the interstices of the opal template assembled by monodisperse submicron polystyrene spheres, and then gelled in a humid environment. Polystyrene template was removed by calcining the specimen at a final temperature of 700 °C accompanied with the crystallization of perovskite phase in PLZT inverse opal network. Scanning electron microscope images show that the inverse opals possess a fcc structure with a lattice constant of 250 nm. A wide photonic band gap in the visible range is observed from transmission spectra of the sample. Such PLZT inverse opals as photonic crystals should be of importance in device applications.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.1578691
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2003
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 10
    Online Resource
    Online Resource
    Large magnetoelectric effect in the polar magnet Sm2BaCuO5
    AIP Publishing ; 2019
    In:  Applied Physics Letters Vol. 115, No. 25 ( 2019-12-16)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 115, No. 25 ( 2019-12-16)
    Abstract: Polar magnets are a family of promising candidates for future magnetoelectric (ME) applications. In particular, the ME effect is recognized for its potential use in low-power electronic devices. However, searching for materials with a sufficiently strong ME effect remains the core issue. In this work, we present a systematic investigation on oxide compound Sm2BaCuO5, including the characterization on structural, magnetic, specific heat, dielectric, and pyroelectric behaviors. The intrinsic linear ME effect is revealed, and two successive antiferromagnetic phase transitions occurring at temperatures of TN1 ∼ 5 K and TN2 ∼ 23 K are found, respectively. While a magnetic field induced electric polarization emerges below TN2 and this polarization increases with the magnetic field in an almost linear manner, another weak pyroelectric current peak is detected around TN1. Furthermore, remarkable responses of both electric polarization to the magnetic field and magnetization to the electric field are demonstrated. It is suggested that the intriguing magnetic interactions play the core roles in generating the ferroelectricity and ME effect in this Sm2BaCuO5 compound.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.5127893
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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