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Simple fabrication of high-sensitivity capacitive tactile sensor based on a polydimethylsiloxane dielectric layer using a biomimetic gray kangaroo leg structure J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-28 Ming Hou, Weiqiang Hong, Honglin Chen, Tianxu Zhang, Xiaowen Zhu, Jianhong Hao, Zhihao Yin, Zihao Yan, Xianghui Li, Anqing Zhang, Zihan Lin, Yunong Zhao, Deli Kong, Jiamu Ding, Xiaohui Guo
Design of the capacitive tactile sensor with ultra-high sensitivity and fast response/recovery times is critical to the advancement of wearable devices. However, achieving both fast response/recovery time and ultra-high sensitivity simultaneously is a huge challenge. In this work a simple and easy-to-prepare flexible capacitive tactile sensor is presented, using a biomimetic gray kangaroo structured
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Self-powered piezoelectric sensor based on BaTiO3/MWCNTs/PVDF electrospun nanofibers for wireless alarm system J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-28 Lei Liu, Xueying Li, Yongfeng Gang, Xin Cui, Bo Fan, Yuanyuan Dan, Jiwen Fang
The piezoelectric constant of polyvinylidene fluoride (PVDF) is inferior to that of piezoelectric ceramics, which will impede the efficient application in smart systems. In this work, we modulated the content of BaTiO3/multi-wall carbon nanotubes (MWCNTs) in the BaTiO3/MWCNTs/PVDF electrospun nanofibers to facilitate the β phase formation in the PVDF to enhance the piezoelectric properties of BaTiO3/MWCNTs/PVDF
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A nanoscale study of hafnium oxide resistive memory switching dynamics J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-28 S Blonkowski, M BenYoussef, M Kogelschatz
This paper deals with the set and reset time measurements of a resistive memory consisting of a Ti/TiN/HfO2 layer stack contacted with the tip of a conductive atomic force microscope in ultra high vacuum. We present measurements of the set and reset switching times in voltage pulse regime for different voltages and compliance currents. The experimental results are well reproduced by simulation. We
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Realization of 1.54 μm electroluminescence via silicon-based erbium-doped SnO2 film devices J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-28 Yunfeng Wu, Houwei Pang, Yuan Wang, Yuxuan Fan, Deren Yang, Dongsheng Li
1.54 μm telecom-wavelength electroluminescence (EL) is achieved by erbium-doped SnO2 film devices fabricated on silicon wafers. Employing fluorine as a co-dopant, the EL intensity is increased due to enhanced electrical injection of the device and improved optical activity of the erbium ions. The realization of EL can be ascribed to the inelastic impact with erbium ions through the hot electrons originating
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Plasmonic hybridized modes empowered by strong plasmon interaction in the nanograting-dielectric-metal stacked structure J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-27 Xinran Wei, Yuzhang Liang, Yiding Zheng, Kaili Kuang, Qiao Wang, Yi Han, Cheng Yang, Yurui Fang, Wei Peng
The coupling between surface plasmon polaritons (SPPs) and waveguide (WG) modes has been widely investigated by using prism-coupled structures and has demonstrated a large number of interesting physical phenomena. However, these conventional structures mainly rely on the angle-dependent total internal reflection excitation. This is not conducive to their further development due to the large volume
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Disappearance of rapid photoresponse in ultraviolet illumination of Ag–Sb–S films J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-27 Y Takagaki, M Hanke, O Brandt
The photoconduction in Ag0.5Sb0.5S films changes anomalously with the excitation energy. Although the usual instantaneous generation and recombination of photocarriers appear in the resistance of the films for the illumination at a wavelength of 633 nm, the photoresponse becomes slow with time scales of minutes when the illumination is performed at a wavelength of 280 nm. The rapid and slow phototransients
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Highly stable and fast response photodetector based on double perovskite Cs2AgBiCl6 crystals J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-27 Zhengyu Han, Mengjia Dai, Zhichen Zeng, Chunhui Ye, Rucheng Dai, Zhongping Wang, Xiaoyu Sun, Zengming Zhang
Photodetectors have attracted extensive research interest owing to their widespread applications. Although perovskite crystals with outstanding optoelectronic properties have proved to be promising candidates for photodetectors, the development is hindered by the instability of perovskite crystals. In this work, we fabricated the photodetector based on high quality Cs2AgBiCl6 crystals. Under 415 nm
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Annihilation mechanisms for interacting skyrmions in magnetic nanowire J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-26 W Al Saidi, S Bhatti, S N Piramanayagam, R Sbiaa
Magnetic skyrmions are considered potential candidates for spintronics-based memory and logic devices. For achieving high-density and high-speed devices, it is essential to study their interactions. In this paper, the interaction, dynamics and annihilation mechanisms of Néel skyrmions in nanowire confinement under the influence of spin-transfer torque (STT) and edge forces have been studied. Initially
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Tailoring optoelectronic performance through compositional engineering to optimize trap densities in Cs x MA(1− x) PbI3 perovskite nanowires J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-26 Bin Han, Yu Hu, Bo Liu, Guanghui Wang, Qi Qiu, Yanren Tang, Shufang Ma, Bingshe Xu, Bocang Qiu, Hsien-Yi Hsu
Organic-inorganic methylammonium lead iodide perovskite (MAPbI3) nanowires (NWs) have attracted significant attention in the realm of optoelectronic devices due to their outstanding optoelectronic properties. However, the persistent challenge of high trap densities has been a limiting factor in realizing their full potential in device performance. To address this challenge, we incorporated cesium (Cs)
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Acoustic attenuation of side-branched Helmholtz resonator with embedded apertures in grazing flow ducts J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-26 Jilai Cao, Sibo Huang, Xinhai Yu, Yong Li
Refrigeration equipment is widely used on a daily basis in residential, commercial and industrial applications, but the aerodynamic performance and noise problems remain a tragic problem. Acoustic duct silencers as an effective noise elimination solution have received great and continuing interest in noise control engineering to mitigate acoustic instability. In the presence of grazing flow, acoustic-attenuation
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Current sheet evolution in a planar inductive pulsed plasma thruster J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-26 Curtis L Promislow, Justin M Little
The evolution of the current sheet is fundamental to the understanding and operation of planar inductive pulsed plasma thrusters. Methods for experimentally determining the time-varying mutual inductance and plasma resistance associated with the current sheet are presented. From these, time-histories of the resistive heating in and electromagnetic acceleration of the sheet are found. Analysis of experimental
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Experimental study on the life and performance of an improved DC arc plasma torch J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-26 Ya-Hao Hu, Su-Rong Sun, Xian Meng, He-Ji Huang, Hai-Xing Wang
A novel DC arc plasma torch is designed in this paper in order to reduce the electrode erosion, and a series of experiments are carried out to investigate how to improve the lifetime and performance of the nitrogen DC arc plasma torch. The analysis of voltage characteristics of the plasma torch indicates that the interelectrode insert can increase the average arc voltage and the sudden expansion structure
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Controlling phase transitions in MnNiGe using thermal quenching and hydrostatic pressure J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-26 Jing-Han Chen, Tej Poudel Chhetri, Anthony T Grant, Xiaojian Bai, Qiang Zhang, Chung-Kai Chang, David P Young, Igor Dubenko, Saikat Talapatra, Naushad Ali, Shane Stadler
The phase transitions in MnNiGe compounds were explored by manipulating the heat treatment conditions and through hydrostatic pressure application. As the quenching temperature increased, both the first-order martensitic structural transition temperatures and magnetic transition temperatures decreased relative to those in the slowly-cooled samples. When the samples were quenched from 1200 ∘C, the first-order
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Comparison of stable spin textures in in-plane vs. out-of-plane magnetized exchange-biased multilayers J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-23 B Dieny, O Fruchart, E E Marinero
This paper delves into the origins and specificity of the unique stable spin textures (360° closed loop domain walls and skyrmions) observed in exchange-biased systems, with either in-plane or out-of-plane magnetic anisotropy. In the case of skyrmions, which are nanometer-sized bubbles consisting of closed-loop 180° walls in perpendicularly-magnetized media, the stability of these spin textures arises
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Independent dual-band absorptions with large frequency ratio and large bandwidth ratio from composite metamaterials of water pyramids over Helmholtz resonators J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-23 ZengHu Fan, Rui Yang
We demonstrate the perfect trapping of electromagnetic fields at dual frequencies through composite metamaterials of a water pyramid cascaded meta-surface loaded with a Helmholtz resonator array. More specifically, the water pyramid cascaded meta-surface functions as an ultra-wideband absorber at the frequency range of 6.6–100 GHz with more than a 175 % relative bandwidth, while operating as a transparent
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A theoretical study on the enhanced oxygen evolution performance of NiN4-graphene by Ni nanoclusters J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-22 Runchuan Shi, Shihao Feng, Zhaoming Fu, Zongxian Yang, Xilin Zhang
Isolated metal-coordinated nitrogen embedded carbon (M–N–C) materials are potential alternatives to noble catalysts for oxygen evolution reaction (OER), and the activity of metal centers can be further modulated by adjusting the coordination environment. Recently, experimental studies have shown that the aggregation of metal atoms into small clusters or particles is inevitable during the high temperature
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Immunogenic cell death induced by low temperature plasma to activate antitumor immunity and enhance therapeutic efficiency J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-22 Xiangni Wang, Xiying Wang, Jinren Liu, Jiajia Lu, Guimin Xu, Yixin Cui, Xingmin Shi, Guanjun Zhang
Low-temperature plasma (LTP) has emerged as a groundbreaking method for inducing immunogenic cell death (ICD) in cancer cells. ICD is a form of cellular demise that triggers an immune response against malignant cells. LTP has demonstrated remarkable potential in activating the immune system and augmenting antitumor responses. In this study, we delved into the capacity of LTP to induce ICD and explored
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Remarkably enhancing dielectric permittivity and suppressing loss of PVDF via incorporating metal nanoparticles decorated glass fibers J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-21 Linwei Zhu, Yujie Yang, Yuchao Li, Zhicheng Shi, Xiaohan Bie, Yuan Yuan, Runhua Fan
Dielectrics with high permittivity and low dielectric loss have so far received considerable attention because of their wide applications in various electronic devices. However, the enhanced permittivity of dielectrics is always accompanied by an increase in loss. In this work, targeting at enhancing the permittivity of poly(vinylidene fluoride) (PVDF) without elevating loss, gold nanoparticles (Au
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Evaluating mobility extraction reliability in non-ideal organic transistors utilizing weak epitaxy-grown pentacene films J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-21 Deqian Tang, Beibei Yuan, Haibo Wang
Organic thin-film transistors (OTFTs) have exhibited enhanced carrier mobilities, albeit often accompanied by non-ideal electrical characteristics, posing challenges in accurately assessing device performance. Therefore, it is critical to understand the reliability of mobility values derived from these non-ideal current–voltage curves. In this study, high-quality pentacene films and their OTFTs were
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Linear enhancement of mechanical compliance by zeolite filling in a compact loudspeaker J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-21 Jin Chen, Fa Tan, Ximin Li, Xingyu Lu, Degang Zhao, Jiamei Liu, He Zhou, Qiuhong Lu, Lihua Qian
A zeolite filling in the rear cavity of a compact loudspeaker enhances the sound pressure amplitude of the loudspeaker system with a frequency range up to ∼500 Hz, but its intrinsic mechanisms remain elusive. We theoretically consider the gas adsorption–desorption behavior on zeolite that can be dynamically perturbed by sound pressure from the diaphragm of the loudspeaker. By merging equivalent circuit
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Controlling the charge of dust particles in an afterglow by modulating the plasma power J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-21 Neeraj Chaubey, J Goree
A dust particle immersed in a glow-discharge plasma has long been known to have a charge that is negative, while the plasma is powered. However, in the afterglow, following the stopping of the plasma power, a large positive charge can collect on the particle, as was shown recently for particles in a cathodic sheath. While that outcome of positive charging in the afterglow may be common, an experimental
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Falling liquid droplets discharge J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-21 JiaLin Liu, LanLan Nie, DaWei Liu, XinPei Lu
This paper reports the phenomenon of two plasma segments forming when a water droplet descends, one between the upper part of the droplet and the outlet tube and the other between the lower part of the droplet and the water surface in the container. The study reveals that as the water droplet descends, the length of the upper plasma gradually increases, while the length of the lower plasma decreases
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ZnO/Ti3C2T x composite photoanodes for efficient dye-sensitized solar cells J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-20 Lei He, Yuanlin Li, Yanxiang Liu, Aijun Li, Xiao-Feng Wang
Dye-sensitized solar cells (DSSC) have gained significant attention as a promising photovoltaic technology due to their simple fabrication methods and low cost. To improve the competitiveness of DSSC against other photovoltaic devices, enhancing the efficiency is crucial. In this study, we explore the incorporation of Ti3C2T x , a two-dimensional (2D) material known for its excellent conductivity,
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Optoelectrical properties of the ternary chalcogenide SnSb2S5 as a new absorber layer for photovoltaic application J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-20 A F Kraidy, I M El Radaf, A Zeinert, A Lahmar, A Peláiz-Barranco, Y Gagou
A new material, tin antimony sulfide (SnSb2S5) thin films, considering different thicknesses (200 nm, 312 nm and 431 nm), were obtained by thermal evaporation onto a glass substrate. The films were studied electrically (I–V dependence) and optically to highlight their properties as photoanodes in thin film photovoltaic devices. The I–V characteristic curves showed n-type semiconductor samples with
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Structural and optical investigations of RE3+: Yb, Er, Sm, Nd, Ce-doped multi-functional silica glasses for photonic applications J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-19 Gracie P J, Yasmin1, D Geetha
The influence of various trivalent lanthanides was investigated in the silica phosphate multi-component glass matrix, synthesized by the sol-gel method. The prepared glasses were analyzed to explore the degree of bandwidth amplification for telecommunication systems, and the potentiality of lasing media and smart glass films. Alkaline earth metal ions of Ca2+ were effectuated as a glass modifier, mediating
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A computational study of a laminar methane–air flame assisted by nanosecond repetitively pulsed discharges J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-19 Xiao Shao, Narjisse Kabbaj, Deanna A Lacoste, Hong G Im
Nanosecond repetitively pulsed (NRP) discharges have been considered a promising technique for enhancing combustion efficiency and control. For successful implementation, it is necessary to understand the complex plasma–combustion interactions involving chemical, thermal, and hydrodynamic pathways. This paper aims to investigate the mechanisms enhancing a laminar methane–air flame assisted by NRP discharges
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A multifunctional frequency selective rasorber based on hybrid microfluidic-electronic control J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-19 Hang Yuan, Danilo Brizi, Varsha Mishra, Xiaoxing Fang, Huangyan Li, Qunsheng Cao, Agostino Monorchio
In this paper, a multifunctional frequency selective rasorber (FSR) based on hybrid microfluidic-electronic control is presented. The proposed FSR consists of a photosensitive resin-based microfluidic channel and an active frequency selective surface. The lossy layer utilizes the special properties of water (dispersion characteristics, fluidity), and has great advantages in low profile, multifunction
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Analytical model of eddy current bobbin coil probe responses at support plates in steam generator and heat exchanger tubes J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-19 Frank Hawkins, Sean P Sullivan, Thomas W Krause
The steam generators (SGs) of CANadian Deuterium Uranium nuclear reactors require periodic inspections to ensure their safe operation. Eddy current (EC) testing is the primary method by which the SG tubes are inspected. Many conditions in the SG tubes affect the EC response, such as fretting, pitting, cracking, as well as tube expansion, and the presence of tubesheet and support structures. When two
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Simulation analysis on the synergistic effect of vegetation ashes and charged particles on the gap electric field distortion J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-19 Baisen Lin, Bin Gou, Daoming Zhang, Yuqian Xue, Rui Wang, Congzhen Xie
Hill fires, a sort of ultra-natural disaster that poses a severe threat to the safe and stable operation of transmission lines, have become more frequent in recent years. Currently, the modeling research on the transmission line gap electric field distortion under hill fire conditions does not consider the synergistic effect of charged particles and ash particles, which would lead to the imperfect
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Atomic-scale insight into arc plasma radiation-induced gassing materials ablation: photothermal decomposition behavior J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-16 Weidong Cao, Xingwen Li, Yanfeng Zhang, Qian Wang, Renjie Yu, Zhenyi Chen, Tao Zhuang
In this study, we present a novel computational atomistic study of the photothermal decomposition behavior of arc plasma on radiation-induced gassing materials ablation, studying a polyamide 66 (PA66) system using reactive force field (ReaxFF) molecular dynamics (MD). We determine the infrared (IR) vibrational frequency of the PA66 permanent molecular dipole using MD and then computationally impose
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Enhanced terahertz frequency mixing in all-dielectric metamaterial with multiple surface plasmon polaritons resonances J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-16 Baoku Wang, Fei Yan, Fengjun Tian, Weimin Sun, Li Li
Nonlinear metamaterials hold a promising platform for generating terahertz (THz) waves. In this paper, we present an all-dielectric metamaterial with multiple surface plasmon polariton (SPP) resonances for enhanced THz frequency mixing. The metamaterial is composed of graphene ribbons, a dielectric layer, and a one-dimensional photonic crystal, displaying the multiple absorptions with simultaneous
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Single-shot all-optical switching of magnetization in TbFe J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-15 Caijian Jiang, Donglin Liu, Xinyu Song, Yifeng Wu, Hai Li, Chudong Xu
Thermally induced magnetization switching (TIMS) relying solely on a single laser without any applied magnetic field is a key research direction of current spintronics. Most studies on TbFe so far have focused on helicity-dependent all-optical switching (HD-AOS). In this work, we observe the TIMS on TbFe alloys excited by atomic spin dynamics simulations combined with a two-temperature model. The results
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Performance analysis of carbon nanotube and graphene nanoribbon based biochemical sensors at atomic scale J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-15 Manasa Bhat, Kaustab Ghosh
Advancements in fabrication technologies have led to the possibility of synthesizing atomic-scale graphene nanoribbon (GNR) and carbon nanotube (CNT) based nanodevices. The purpose of this study was to model the electronic properties and electrical characteristics of these devices by atomistic modeling using density functional theory and the non-equilibrium Green’s function and compare the effects
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Advances in complex oxide quantum materials through new approaches to molecular beam epitaxy J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-15 Gaurab Rimal, Ryan B Comes
Molecular beam epitaxy (MBE), a workhorse of the semiconductor industry, has progressed rapidly in the last few decades in the development of novel materials. Recent developments in condensed matter and materials physics have seen the rise of many novel quantum materials that require ultra-clean and high-quality samples for fundamental studies and applications. Novel oxide-based quantum materials synthesized
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Improvement in thermoelectric properties of Zn–Mn co-doped nanostructured SnTe through band engineering and chemical bond softening J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-15 Anita Bugalia, Vivek Gupta, Abhishek Pandey
In this work, we used solvothermal technique to synthesize thermoelectrically viable Zn–Mn co-doped SnTe materials. However, the thermoelectric (TE) performance of pure SnTe is subpar due to the significant energy gap between its valence bands, inherent Sn-vacancies, and high electrical thermal conductivity. Band structure engineering and carrier concentration optimization of SnTe following Zn–Mn co-doping
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Characterization and comparability study of a series of miniaturized neon plasma jets J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-15 Helena Jablonowski, Ulfilas Hoffmann, Robert Bansemer, Sander Bekeschus, Torsten Gerling, Thomas von Woedtke
During the development of new therapeutic devices, comprehensive experimental investigations are necessary in all phases of the process. This requires the provision of device prototypes with reproducible and comparable operating parameters. In the current study, such miniature neon plasma jet prototypes designated for medical applications have been manufactured, characterized, and compared. The multi-parametric
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Metamaterial control of the surface acoustic wave streaming jet J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-15 C Pouya, G R Nash
The phenomenon of surface acoustic wave (SAW) streaming, where a streaming jet is created, occurs when an SAW propagating on the surface of a solid interacts with water, and underpins the increasingly important area of SAW microfluidics. A key characteristic of the streaming jet is the Rayleigh angle, i.e. the angle at which the jet is formed relative to the surface normal of the solid, which is determined
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Study on fracture characteristics and mechanisms of red sandstone under high-voltage pulse discharge J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-15 Qiqi Hao, Fengpeng Zhang, Jianyu Peng, Guangliang Yan, Chuan Du
To investigate the influences of geometrical size and discharge voltage of the pulse discharge equipment on the fracture characteristics and mechanisms of sandstone under high-voltage pulses, a series of experiments was conducted using a high-voltage pulse discharge device on sandstone circular disc specimens of sandstone with a thickness of 10 mm. These experiments covered a range of disc diameters
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Investigation of the dependence of temperature attenuation of the layered bio-tissue J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-15 Peng Zhao, Wanting Shi, Shiqi Tong, Yuebing Wang, Jinling Chen, Xiaoye Hu, Hong Shen, Jing Zhao
High-intensity focused ultrasound for solid tumor ablation is a noninvasive ultrasound hyperthermia technique wherein ultrasound is transmitted through multiple layers of biological tissues, focusing on the target area. The resulting heat accumulates in the target tissue, leading to irreversible cell death or protein necrosis, achieving tumor ablation. During treatment, the efficiency of acoustic energy
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Blade emitters for atmospheric ionic thrusters J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-14 M Belan, J Baldo, O Kahol, D Montenero
In the field of atmospheric ionic thrusters, the objective of this work is to evaluate the possibility of an alternative ionic emitter to the traditional thin wire emitter, in order to overcome the technical issues of the EHD technology related to the fragility of the wires and to make it more suitable to applications outside the laboratory. For the presented experiments, emitters in the form of metallic
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On the role of defects in modelling approaches for thin film gas barrier coatings on polymer substrates: I. Model development J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-14 J Franke, R Dahlmann
We present a method to model the gas permeation through silicon-oxide thin film coatings that are afflicted with nanoscale defects. With it, we are able to give an estimation of the diffusion coefficient in bulk by subtracting the influence of the defects. The model is based on data obtained from positron annihilation spectroscopy, which is processed to yield possible defect allocation patterns of
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Colour-tunable features in thermally stable Tb3+/Eu3+ co-doped telluro tungstate glasses for photonic applications J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-14 Vikas Sangwan, M Jayasimhadri, D Haranath
The melt quenching procedure has been followed to synthesize transparent Tb3+ singly activated and Tb3+/Eu3+ co-activated TeO2–WO3–K2O–ZnO–Bi2O3 (TWKZBi) glasses. The structural characteristics of the prepared TWKZBi glass samples were examined through x-ray diffraction. The existence of functional units corresponding to the different vibrations has been examined via Raman spectroscopy. The photoluminescent
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A highly tunable biosensor in graphene-vanadium dioxide hyperbolic metamaterial based on surface plasmon resonance J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-13 Jing Zhang, Xiang Zhou, Yiping Ding, Chenfei Yang, Qinxin Yue, Dongmei Deng, Shigen Ouyang, Xiangbo Yang
We investigate the Goos-Hänchen GH shift in a hyperbolic metamaterial comprising graphene GHMM and vanadium dioxide VO2 as the dielectric. Our study reveals that the dispersion type of GHMM can be controlled via the Fermi energy of graphene and temperature, modulating wavelength intervals. Notably, the GH shift in type I dispersion surpasses that in elliptical and type II dispersions. This suggests
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Anisotropy constant of antiferromagnetic Pt50Mn50 J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-13 W Frost, R Carpenter, G Vallejo-Fernandez
We have measured the anisotropy constant of polycrystalline PtMn thin films deposited on different seed layer materials: Pt, Ru and Nb. Values as high as (2.5±0.5)⋅107ergcm−3 were achieved for samples deposited on Pt. The films can be crystallised into the antiferromagnetic, face-centred-tetragonal phase on Ru and Pt seed layers at annealing temperatures compatible with back-end-of-line conditions
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Developing three-dimensional mechanical metamaterials with tailorable bandgaps for impact mitigation J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-13 Youchuan Zhou, Lin Ye, Yuan Chen
A novel three-dimensional mechanical metamaterial with low frequency bandgaps and negative Poisson’s ratio is designed, consisting of a conventional three-dimensional reentrant structure and periodic resonators, with the aim of achieving vibration isolation and impact mitigation. The bandgap characteristic of the proposed metamaterial is determined computationally, and its dispersion diagram exhibits
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An effective approach for aerosol dynamics modeling in dusty plasma J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-12 G Tetard, A Michau, S Prasanna, K Hassouni
In this paper, we demonstrate the application of the Dirac-lognormal bimodal moment approach to investigate aerosol dynamics in dusty plasmas. This approach was evaluated by comparison with the detailed and computationally expensive sectional approach for two dusty plasma systems. The first one is a sputtering Argon DC discharge and the second is a capacitively coupled Ar/C2H2 radio-frequency (CCRF)
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Dimensional scaling effects on critical current density and magnetization switching in CoFeB-based magnetic tunnel junction J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-12 R Phoomatna, S Sampan-a-pai, A Meo, R W Chantrell, J Chureemart, P Chureemart
In this work, we theoretically investigate the size dependence of the magnetization reversal behavior in CoFeB-MgO-CoFeB magnetic tunnel junctions (MTJs) by employing an atomistic spin model coupled with the spin accumulation model. The former and the latter are used to construct the magnetic structure and to model the spin transport behavior, respectively. The accuracy of the approach is confirmed
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Thermal evolution of low-temperature magnetic texture modulation in fept thin films by direct visualization J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-09 Cynthia P Quinteros, Dafne Goijman, Silvia Damerio, Julián Milano
Patterns of ferroic domains and domain walls are being intensively studied to implement new logic schemes. Any technological application of such objects depends on a detailed understanding of them. Using low-temperature magnetic force measurements (10–300 K), the evolution of ferromagnetic stripes on equiatomic FePt thin films is thoroughly analyzed. Since FePt is known to develop a transition from
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Detection of type-Ⅱ diabetes using graphene-based biosensors J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-09 Basant Roondhe, Sankhadip Saha, Wei Luo, Rajeev Ahuja, Sumit Saxena
Diabetes is a global pandemic that increases the risk of various health complications, including heart attacks, renal failure, blindness, stroke, and peripheral neuropathy. Type-2 diabetes (T2D) results from an imbalance in lipid and glucose metabolism due to hostility to insulin action and insufficient insulin production response. Valine amino acid has been identified as a potential biomarker for
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1.43 kV GaN-based MIS Schottky barrier diodes J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-09 Fuping Huang, Chunshuang Chu, Zhizhong Wang, Kangkai Tian, Hehe Gong, Yonghui Zhang, Yongjian Li, Jiandong Ye, Zi-Hui Zhang
In this letter, we report on a quasi–vertical GaN-based metal–insulator–semiconductor (MIS) Schottky barrier diode (SBD) with an insertion of 2 nm thick Al2O3 dielectric layer. It shows a turn-on voltage of 0.7 V, a specific on-resistance of 3.5 mΩ·cm2, and a high on/off current ratio of 1011. The proposed structure enables a breakdown voltage of 1430 V, rendering a Baliga’s power figure-of-merit of
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Investigating thermal conductivity and mechanical properties of a hybrid material based on cellulose nanofibers and boron nitride nanotubes using molecular dynamics simulations J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-08 Upamanyu Ray, Zhenqian Pang, Teng Li
Cellulose nanofibers (NFCs) have emerged as a preferred choice for fabricating nanomaterials with exceptional mechanical properties. At the same time, boron nitride nanotubes (BNNTs) have long been favored in thermal management devices due to their superior thermal conductivity (k). This study uses reverse non-equilibrium molecular dynamics (MD) simulations to investigate k for a hybrid material based
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Stable skyrmions in Co/Ni-based nanopillars with perpendicular magnetization anisotropy J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-08 Gang Lv, Hong Zhang, Feng Gao, Guihua Li, Tianliang Liu, Yaowen Liu
Micromagnetic simulations have been conducted to explore the formation rules of stable skyrmions in Co/Ni-based perpendicular magnetization anisotropy nanopillars with Dzyaloshinskii–Moriya Interaction (DMI). The results show that an appropriate perpendicular magnetic field can generate a robust Néel-type skyrmion magnetic configuration in the free layer with a 5° tilted easy axis. The creation and
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Depolarization of metal surfaces based on Mueller and integral equation method J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-07 Yanhui Li, Pengfei Yang, Hua Zhao, Lu Bai, Yi Luo
This paper delves into the depolarization phenomenon of materials using the integral equation method and Mueller matrix method. In the integral equation method, it is observed that depolarization trends with roughness are similar at different wavelengths, but numerical differences exist. The results are well-supported by both theory and experiments. Specifically, at 1064 nm wavelength, materials exhibit
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Explainable artificial intelligence-based evidential inferencing on process faults in plasma etching J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-07 Jeong Eun Choi, Surin An, Younji Lee, Yongil Lee, Dohyun Kim, Sang Jeen Hong
The fault detection and classification (FDC) modeling proposed in this study is a research approach that is intended to improve the performance of plasma process models by leveraging optical emission spectroscopy (OES) data containing plasma information (PI) and enhancing model interpretability using explainable artificial intelligence (XAI) algorithms. Status variable identification data that included
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The decay curves of luminescence from Eu2+ in β-SiAlON are effectively analyzed using the general-order kinetics formula J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-07 Yoriko Suda, Tsuyoshi Okuno, Takashi Takeda, Kohsei Takahashi, Naoto Hirosaki
Defects in phosphors affect not only luminescence intensity but also emission peak width, decay time, and afterglow. The green phosphor β-SiAlON:Eu2+ exhibits the green emission of Eu2+ at 520 nm and the blue emission of nitrogen vacancies at 460 nm in time-resolved fluorescence measurements. The decay time of the intrinsic Eu2+ transition is 0.7 μs, but afterglow is detected from 50 μs to 0.01 s.
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Characterization of wireless power transfer based on Fano resonant-like surface J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-06 Yihao Wei, Lina Chen, Yongqiang Chen, Yanhong Liu, Fusheng Deng, Xiaoqiang Su, Lijuan Dong
This paper presents a new way to enhance the transmission efficiency of a dual-coils wireless power transfer system. That method is to introduce a Fano resonant-like surface in the dual-coils wireless power transfer system. This surface, positioned opposite the transmission direction of the transmitter coil in the system, adopts a four-armed helical structure. The results demonstrate that introducing
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Mechanisms of charge-induced surface discharge under positive impulse voltages J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-05 Yixuan Li, Boya Zhang, Xinmiao Zhou, Kai Ji, Haifei Tao, Kaixuan Li, Xingwen Li
Charge-induced surface flashover is a critical factor leading to insulation failures in high-voltage direct current gas-insulated equipment, and the underlying mechanisms are still unclear. In the present study, the typical surface charge distributions are first summarized. Then, the impact of charge polarity and position on surface discharge characteristics in ambient air is studied, and the surface
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Reliable extraction of x-ray refraction and dark-field signals with a large field of view, multi-modal scanning system at spectral energies up to 150 kVp J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-05 T Partridge, A Astolfo, I Buchanan, G K Kallon, P R T Munro, C K Hagen, M Endrizzi, D Bate, A Olivo
Multi-modal x-ray scanning allows the simultaneous acquisition of attenuation, refraction and ultra-small angle scattering or dark field images. While many examples of multi-modal x-ray scanning exist in the literature, extension to high x-ray energy, necessary to investigate dense and high-Z materials, still poses challenges. We present the investigation of attenuation, refraction and dark field images
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Effects of liquid properties on the development of nanosecond-pulsed plasma inside of liquid: comparison of water and liquid nitrogen J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-02 Zhiheng Song, Alexander Fridman, Danil Dobrynin
In this manuscript, we report on observations of the development of nanosecond-pulsed plasma in liquids and examine liquids with two drastically different properties: water and liquid nitrogen. Here, we compare the discharge appearance using high-speed imaging, examine bubble formation using shadow imaging, and measure the time-averaged optical emission spectra of these plasmas. Because the liquid
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Ag nanoparticle decorated β-Ga2O3 nanowires on Si substrates: advancing photodetector technology J. Phys. D: Appl. Phys. (IF 3.4) Pub Date : 2024-02-02 Shagolsem Romeo Meitei, Leimapokpam Sophia Devi, Naorem Khelchand Singh
In this study, we present the fabrication of Ag nanoparticle (NP) decorated β-Ga2O3 nanowire (NW) on a Si-substrate, with a focus on their application in photodetection. The resulting Ag NP decorated β-Ga2O3 NW exhibited a polycrystalline morphology characterized by well-aligned rows of vertically oriented structures. The mean size of the crystallites was revealed to be approximately 15.94 nm. The