- by Bingjie Guo, Zhixin Wu, Yanbo Guo, Yunlin Liu, Xiaolong Zhong, Jianmin Zeng, Andrey V Emelyanov, Pavel A Forsh and Gang LiuIn recent years, metal–organic coordination polymer (MOCP) films have emerged as promising materials for memristor applications. However, the development of MOCP-based organic memristors remains challenging due to the complexities of synthesis, particularly for layer-by-layer (LbL) systems, which further increase the technological difficulty. In this study, we present a rapid and efficient electrochemical approach for synthesizing LbL MOCP films through a precisely controllable fabrication process. This method not only avoids the introduction of impurities but also enables precise thickness control by […]
- by Loredana Viscardi, Adolfo Mazzotti, Ofelia Durante, Thomas Pucher, Nadia Martucciello, Andres Castellanos-Gomez and Antonio Di BartolomeoTwo-dimensional van der Waals heterostructures provide a versatile platform for multifunctional optoelectronic devices. WS2/PdSe2 heterostructures, characterized by n-type conductive behavior, exhibit persistent photoconductivity in high vacuum under negative gate voltages. This phenomenon has been leveraged to simulate synaptic functions of the human brain, including short- and long-term plasticity. Short-term plasticity was simulated, resulting in paired-pulse facilitation and post-tetanic potentiation indices of approximately 140% and 300%, respectively. By stimulating the WS2/PdSe2 heterostructure with consecutive 1 s light pulses, the learning, forgetting, […]
- by Dario Stocco and Christian M FranckResistive plate chambers (RPCs) are widely used for detecting ionizing radiation in high-energy physics experiments. Abundant background radiation, however, decreases the detection performance due to the resistive layers, preventing immediate electric charge removal. The resulting localized voltage drop across the layer containing the gas mixture (gas gap) determines the intensity of the deterioration of the detection efficiency, time resolution, and charge spectrum. This is a key part of assessing novel eco-friendly gas mixtures, which must exhibit certain robustness against irradiation. […]
- by A Hellé, R Hugon, F Brochard and G MarcosElectrical and fast imaging measurements are performed on an experimental device designed to study the dynamics of electric arcs in the DC regime. The work presented here is aiming to propose a new approach in order to give a better understanding of molten metal bubbles explosion near electric arc foot. These phenomena reveal to not only have a great contribution in material ejection when compared with ejection mechanisms that are usually taken into account but also to have a significant […]
- by Raphaël Robert, Françoise Massines and Luc StaffordThis paper examines the effects of NH3 dissociation on the physics driving low frequency dielectric barrier discharges operated in Penning Ar–NH3 gas mixtures. Optical emission and absorption diagnostics in combination with current–voltage characteristics are used to probe the global (averaged over the whole discharge zone) and local (at a given position along the gas flow lines) properties as a function of the gas flow rate. When the gas flow rate is sufficiently high, NH3 does not remain in the discharge […]
- by Tengfei Li, Zhenzhou Wang, Jinghua Han, Haidong Gu, Xing’an Long, Jing Xiao and Guoying FengIn this study, aircraft skin cleaning using a ‘continuous + pulse mode’ composite laser was investigated. The mechanism and optimum parameters of the composite laser cleaning mechanism were studied experimentally, theoretically and via thermodynamic simulation. In a composite laser system, a continuous laser is used to achieve fast and efficient cleaning; however, the ablative residue may easily adhere to the substrate and form a residue. The ablative impact of a nanosecond-pulsed laser can effectively remove high-temperature ablative residues in a […]
- by Rafi Ullah, Dane D Morgan and Izabela SzlufarskaThe diffusion of Mg defects in 3C-SiC is studied using the density functional theory. Mg has the highest burn-in rate as a transmutant in 3C-SiC when it is placed in high-energy neutron irradiation environment of a fusion reactor. The presence and evolution of transmutant defects impact thermal and mechanical properties of this important structural material. This study is focused on understanding the structure, stability, and evolution of Mg defects and the interaction of Mg with native defects in 3C-SiC. Our […]
- by Jian Zhu, Jiawei Lu, Chen Chen, Peicheng Feng and Weizhe DingNoise control in an annular cellular environment has numerous applications in engineering. However, when planar acoustic metamaterials are transformed into annular configurations, the non-periodic arrangement of elements makes it difficult to ensure their excellent broadband acoustic performance and hinders them from realizing practical engineering requirements effectively. In this work, based on the Helmholtz resonator, a resonant coupling model for dual split-ring resonator (SRR) units is constructed, revealing the impact of changes in the relative angle and distance between the SRRs […]
- by Chen Yang, Yidi Cao and Min XiangMore accurate mechanistic modeling of magnetocardiography is crucial for clinically guiding medical professionals in diagnosing heart diseases. The bioelectric current in the heart generates an electromagnetic field on the body surface. Although previous studies have highlighted the role of myocardial electromechanical feedback in electrophysiological output, its impact on magnetic fields remains underexplored. In this work, we first explore the effect of myocardial contraction on magnetic field maps (MFM) by proposing a fully coupled modular finite element framework. The solution of […]
- by Yanxia Chen, Chaoqun Ma, Wenwen Qu, Donghong Peng, Shuangqiang Liu and Le LuoThis paper proposes a structure cascading Fabry–Perot interferometer (FPI) and Sagnac interferometer (SI). This sensing structure achieves dual-parameter simultaneous detection through the Vernier effect, further stability testing is conducted. The FPI is formed by filling PI material, which is sensitive to both temperature and salinity, between the facets of paired single-mode fiber (SMF) segments, with the assembly encapsulated by a hollowed-out stainless steel tube, while the SI is composed of SMFs spliced with a polarization-maintaining fiber (PMF), which is only […]
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