PHYSICA SCRIPTA 是一本国际期刊，针对实验和理论物理学的任何分支进行原创研究。文章将在以下任一主题中被考虑，也欢迎涉及物理学的跨学科主题：-原子、分子和光学物理-等离子体物理-凝聚态物理-数学物理-天体物理-高能物理-核物理-非线性物理。该杂志旨在提高研究对更广泛的物理科学界的知名度和可及性。鼓励发表关于广泛感兴趣的主题的文章，并且在更专业的领域提交的文章应努力在引言中提及他们研究的更广泛背景。

Physica Scripta is an international journal dedicated to original research in all branches of experimental and theoretical physics. We consider articles on any of the following topics and welcome interdisciplinary subjects related to physics: - Atomic, molecular, and optical physics - Plasma physics - Condensed matter physics - Mathematical physics - Astrophysics - High-energy physics - Nuclear physics - Nonlinear physics. The journal aims to enhance the visibility and accessibility of research to the broader physics community. We encourage submissions on topics of wide interest, and articles submitted in more specialized fields should strive to mention the broader context of their research in the introduction.

《Physica Scripta》是一本国际期刊，专注于实验和理论物理学的各个分支，欢迎原创研究的投稿。我们接受以下主题的文章，同时也鼓励涉及物理学的跨学科研究：- 原子、分子和光学物理 - 等离子体物理 - 凝聚态物理 - 数学物理 - 天体物理 - 高能物理 - 核物理 - 非线性物理。该期刊旨在提升研究成果在更广泛物理科学界的知名度和可及性。我们鼓励发表与广泛主题相关的文章，同时在更专业领域的投稿应努力在引言中阐明其研究的更广泛背景。

Physica Scripta

Abstract Great advancements in III–V/Si epitaxy have pushed quantum dot lasers to the forefront of silicon photonics. In this work, we designed the structures of evanescent coupled quantum dot distributed feedback lasers with asymmetric gratings, which made significant improvement in on-chip output power while maintaining single-longitudinal-mode stability. The optimal /4 phase-shift position (the ratio of the grating length from the rear-end of /4 phase-shift to the total grating length) from conventional position of 0.50 to 0.64 allows the ratio of the output power at both sides of silicon waveguide to be increased from 1.0 to 5.9. Moreover, the optimal duty cycle at one side of the phase-shift from 0.50 to 0.8 allows the ratio to be increased from 1.0 to 3.7. Meanwhile, the ratio could be dramatically improved from 1.0 to 9.2 by changed the duty cycle at one side of phase-shift to 0.7 while maintaining the phase-shift position of 0.64. With those designed structures, evanescent coupled quantum dot lasers could challenge the state-of-the-art bonded quantum well lasers and may eventually become ubiquitous and affordable for future commercial production.

Qing Ge

Jun Wang

Shuaicheng Liu

Hao Liu

Hao Zhai

Feng Lin

Yanan Chen

Chuanjiang Liu

Kaize Mao

Yiming Bai

Qi Wang

Yongqing Huang

Xiaomin Ren

Design of high power evanescent quantum dot distributed feedback lasers on Si

Abstract We proposed a tunable chiral metasurface comprising a reflective bottom layer of gold, a dielectric layer of polyimide, and a structural top layer of gold-graphene. Its main properties were studied via numerical simulations conducted using CST Studio Suite. The results indicate that, based on the chiral metasurface, we achieved dual-band circular dichroism of −0.5 and 0.77 at 0.9 THz and 1.06 THz, respectively, and complementary near-field imaging applications were realized by tuning the Fermi level (E f ) of graphene. Subsequently, exploiting the exceptional selective characteristics of circularly polarized waves using a chiral metasurface, eight chiral phase-gradient metasurfaces were constructed by rotating the chiral structure. Moreover, based on the Pancharatnam-Berry phase principle, tunable wavefront shaping applications were further realized, including anomalous reflection, vortex beams, and focusing. In anomalous reflection, the reflection angles for left-circularly polarized (LCP) and right-circularly polarized (RCP) incidences are opposite when adjusting the E f of graphene. For example, when the graphene E f is 0 eV and the LCP wave is incident at 0°, the reflection angle is −18°. Conversely, when the graphene E f is 1 eV and the RCP wave is incident at 0°, the reflection angle is 18°. In the application of vortex beams, by adjusting the E f of graphene, we achieved vortex beams with opposite topological charges under different circularly polarized incidences. In the focusing application, the incident LCP and RCP can achieve focusing and defocusing, respectively. And the graphene E f can dynamically control the focusing efficiency at the incident LCP, increasing it from 13.63% to 44.84%.

Xin Zhang

Shuang Yang

Yachen Gao

A Tunable Chiral Metasurface Useable in Terahertz Imaging and Wavefront Shaping

Abstract The emergence of metasurface technology has brought innovation to the design of optical devices, and many optical devices based on metasurface have been proposed. However, the inherent dispersion of metasurface structures limits their ability to operate at wide frequencies. By changing the geometric parameters of the metasurface unit structure, the unit structure has achromatic properties on the basis of satisfying the phase gradient. Numerical simulation results demonstrate that the proposed multilayer transmissive metasurface stealth cloak has broadband stealth function in the frequency range of 0.7 to 0.77 THz. Achromatic broadband metasurface stealth devices provide new ideas for the design of broadband metasurface stealth devices, and also promote the research of other broadband metasurface optical devices.

Yanling Li

Jianfeng Xu

Fuhai Liu

Lizhen Xu

Bo Fang

Chenxia Li

Broadband achromatic transmission stealth cloak based on all dielectric metasurfaces

Abstract Multi-person cooperative positioning is one of the main techniques to improve the success rate of search and rescue. Nevertheless, current integrated positioning solutions for ZigBee and inertial navigation system (INS) are insufficiently versatile and commonly necessitate pre-existing infrastructure within the area. In this study, it is not necessary to install ZigBee positioning anchors in the environment in advance, and all positioning devices were mounted on rescuers, in contrast to previous positioning methods. First, an improved time difference of arrival (TDOA) method is proposed, which weights the position coordinates to minimize positioning errors. Then, the position data of the commander and the rescuers are substituted into the hyperbolic equations of the improved TDOA method, and the initial position of the rescuers is solved by Taylor method. Finally, based on the initial position, an improved Extended Kalman filter (EKF) position update technology is proposed, which uses ZigBee positioning system to monitor the east and north position of rescuers, and uses barometers to measure the altitude of rescuers. The magnetometers are used to limit the heading angle of the rescuers, so as to realize the high-precision 3D positioning of the emergency rescuers in the harsh environment. In this paper, three different scenarios are used to verify the effectiveness of the proposed method. The experimental results demonstrate that, when compared to the inertial positioning method, the traditional TDOA method, and the cooperative positioning method based on the relative ranging constraints of UWB and INS, respectively, the average positioning accuracy of the proposed method is 68.58%, 48.71%, and 13.59% higher.

Miaoxin Ji

Guihui Ren

Huijuan Zhang

Renhao Ren

Collaborative positioning for emergency rescuers based on INS, GPS and ZigBee

Abstract In this study, we investigate the effects of tungsten doping on the structural, electronic, and thermoelectric properties of Bi 2 O 2 Se using density functional theory combined with Boltzmann transport theory. As the tungsten is doped at Bi-site, the introduced additional electrons modify the electronic structure of Bi 2 O 2 Se significantly and lead to the metallic character of Bi 2 O 2 Se. Meanwhile, tungsten doping improves the electrical conductivity and power factor of Bi 2 O 2 Se, and optimizes the figure of merit ZT. This study demonstrates that tungsten doping is an effective method to modify the thermoelectric transport properties of Bi 2 O 2 Se.

Buda Li

Hangbo Qi

Siqin Zhao

Menglu Li

Shan Feng

Xiaotao Zu

Liang Qiao

Haiyan Xiao

The effects of tungsten doping on the thermoelectric properties of Bi<sub>2</sub>O<sub>2</sub>Se

Abstract In this paper, we explore classical electromagnetic radiation using a dual four-dimensional potential $\Theta^\mu$ approach. Our focus is on the Planar Dipole Blade Antenna (PDBA), a system consisting of two flat perfect conductive regions on the $xy$-plane, separated by a gap $\mathcal{G}$, with alternating potentials applied to the conductors. This method emphasizes the use of the scalar magnetic potential $\Psi(\boldsymbol{r},t)$ and the electric vector potential $\boldsymbol{\Theta}$, which generates the electric field $\boldsymbol{E}(\boldsymbol{r},t)=\nabla\times\boldsymbol{\Theta}(\boldsymbol{r},t)$ in free space. These potentials replace the standard magnetic vector potential $\boldsymbol{A}$ and the scalar electric potential $\boldsymbol{\Phi}$ in our analysis. For harmonic radiation, the electromagnetic field can be expressed in terms of the electric vector potential $\boldsymbol{\Theta}(\boldsymbol{r},t)$. We derive a corresponding retarded vector potential for $\boldsymbol{\Theta}$ in terms of a two-dimensional vector field $\boldsymbol{\mathcal{W}}(\boldsymbol{r},t)$, which flows through the gap region $\mathcal{G}$. This dual analytical approach yields mathematically equivalent expressions for modeling Planar Blade Antennas, analogous to those used for ribbons in the region $\mathcal{G}$, simplifying the mathematical problem. In the gapless limit, this approach reduces the two-dimensional radiator (PDBA) to a one-dimensional wire-loop-like antenna red, significantly simplifying the problem's dimensionality. This leads to a dual version of Jefimenko's equations for the electric field, where $\mathcal{W}$ behaves like a surface current in the gap region and satisfies a continuity condition. To demonstrate the utility of this approach, we provide an analytical solution for a PDBA with a thin annular gap at low frequency.

Robert Paul Salazar Romero

Camilo Bayona Roa

Modeling of electromagnetic radiation using a dual four-potential representation: from dipole blade radiators to ribbon loop-like antennas

双四势表示法建模电磁辐射：从偶极叶片辐射器到带状环形天线

Abstract Acrylonitrile Butadiene Styrene (ABS) and Polystyrene (PS) are utilized in high-performance automotive parts, robust consumer electronics, and advanced packaging solutions for improved durability and strength. Joining ABS and PS using Friction Stir Welding (FSW) significantly enhances joint strength, material integrity, and performance, making it ideal for advanced engineering applications. The present paper investigates the effects of incorporating and depriving multiwall carbon nanotubes (MWCNTs) during the joining of the ABS and PS material. A cylindrical threaded tool is used to join the material at varying tool rotation speed (TRS) from 700 rpm to 1100 rpm with an interval of 100 rpm and traverse speed (TS) from 0.1mm/s to 0.5mm/s with an interval of 0.1mm/s. The Scanning Electron microscopy (SEM) and Fourier-Transform Infrared Spectroscopy (FTIR) analysis of welded samples is also performed. The results showed that optimal joints were formed at a TS of 0.1 mm/s and a TRS of 900 rpm with MWCNTs. Without MWCNTs, the maximum tensile strength and efficiency were achieved at a TS of 0.5 mm/s and TRS of 800 rpm. Tensile tests demonstrated a 39.16% increase in joint strength with the incorporation of MWCNTs in welded dissimilar thermoplastic materials, highlighting their potential to significantly enhance tensile strength.

BALMIKI KUMAR

Sanjeev Kumar

John Deb Barma

Mechanical Performance of Friction Stir Welded Acrylonitrile Butadiene Styrene and polystyrene plates with and without Multiwall Carbon Nanotubes: A Comparative Study

摩擦搅拌焊接丙烯腈-丁二烯-苯乙烯和聚苯乙烯板材的力学性能：有无多壁碳纳米管的比较研究

Abstract We theoretically investigate the influence of the variation of the nonlocal degree of the molecular orientation effect σ1 and the nonlocal degree of the thermal effect σ2 on beam propagation in nonlocal media with competing nonlinearities. According to the model proposed by JUNG P S, we find that variations in σ1 and σ2 have completely different effects on beam propagation in the medium. When σ1 increases, the beam tends to broaden, whereas when σ2 increases, the beam tends to compress. Numerical calculations, conducted using the split-step Fourier method, show that changes in σ2 have a smaller effect on propagation compared to σ1. Adiabatic propagation of the beam in nematic liquid crystals can be achieved if σ1 changes gradually, but not if σ1 changes abruptly. In contrast, adiabatic propagation can be realized with σ2 whether it changes abruptly or gradually. The variational results are well confirmed by numerical simulations.

Mingxin Du

Shaozhi Pu

Meng Zhang

Ying Sun

Xiaomeng Wang

Adiabatic propagation in nematic liquid crystals with competing nonlinearities

竞争非线性作用下向列液晶中的绝热传播

Abstract Perovskite solar cells (PSCs) have been given much attention in photovoltaics-based power generation, particularly in building integrated photovoltaics (BIPV) applications due to their lightweight and promising technical performance. PSCs exhibit remarkable transparency to visible light, which makes them an ideal candidate for BIPV applications such as glass-based solar facades and clear solar windows. As the PSC is yet an immature technology, much research is still required to validate its visibility and cost-effectiveness for different applications including electrical vehicles. This paper takes one step forward in achieving this goal by presenting a new ultrathin transparent electrodes (UTE) design that comprises a square patch layout to improve the performance of transparent conductive materials. The proposed electrode design is aimed to improve the absorption of the material in the ultra-violet (UV) region with high optical transparency. To assess the angular dependence on the absorption characteristics, both transverse magnetic and transverse electric modes are studied at various oblique angles of incident light. Furthermore, interference theory is applied numerically to validate the proposed UTE design. The impact of various geometric parameters including period, ground height, spacer height, and top square resonator length on the performance of the proposed UTE layout is investigated through detailed simulation analysis. Moreover, surface electric field patterns are analyzed to understand the absorption mechanism of the proposed UTE. Results reveal the effectiveness of the proposed structure for various BIPV applications including electric vehicles, wearable electronics, and tandem devices.

Amina Shafique

Uzma Amin

Ahmed Abu-Siada

Ultrathin transparent indium tin oxide-based electrodes for enhanced performance of perovskite solar cells

用于提升钙钛矿太阳能电池性能的超薄透明铟锡氧化物基电极

Abstract With a dimension of roughly 10 nm, carbon quantum dots (CQDs) are an intriguing family of carbon nanoparticles. Various fabrication techniques, such as ultrasonication, electrochemical oxidation, hydrothermal reaction, laser ablation, microwave irradiation, and reflux, lead to CQD synthesis through processes including pyrolysis, carbonization, oxidation, and polymerization. Sustainable raw materials are often utilized, aligning with environmental concerns and waste reduction efforts. CQDs exhibit low toxicity, chemical inertness, remarkable biocompatibility, and highly adjustable photoluminescence behaviour, owing to their semiconductor-like properties and oxygen based functional groups. Their tiny particle sizes contribute to highly photoluminescent emissions and controllable fluorescence. In biomedical applications, CQDs show promise for imaging, drug delivery, and sensing due to their biocompatibility and tunable optical properties. In environmental contexts, they hold potential for wastewater treatment, heavy metal detection, and ion sensing, leveraging their adsorption capabilities and photoluminescence. This review explores the synthesis methods, physical and chemical characteristics, and diverse applications of CQDs, particularly focusing on their potential in biomedical imaging, environmental remediation, and sensing technologies.&amp;#xD;

Jebanisha B

V N Meena Devi

Carbon quantum dots: synthesis, properties and multifaceted applications in biomedical imaging, environmental remediation and sensing technologies

碳量子点：合成、性质及其在生物医学成像、环境修复和传感技术中的多方面应用

Abbreviation	Phys. Scr.
Journal Impact	2.72
Quartiles(Global)	PHYSICS, MULTIDISCIPLINARY(Q2)

ISSN	0031-8949, 1402-4896
h-index	97

Publication Information	Publisher: Institute of Physics，Publishing cycle: Monthly，Journal Type: journal，Open Access Journals: No
Basic data	Year of publication: 1970，Proportion of original research papers: 99.38%，Self Citation Rate:11.50%， Gold OA Rate: 5.69%
Average review cycle	网友分享经验：平均4.8个月
Average recruitment ratio	网友分享经验：容易

Physica Scripta

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Design of high power evanescent quantum dot distributed feedback lasers on Si

A Tunable Chiral Metasurface Useable in Terahertz Imaging and Wavefront Shaping

Broadband achromatic transmission stealth cloak based on all dielectric metasurfaces

Collaborative positioning for emergency rescuers based on INS, GPS and ZigBee

The effects of tungsten doping on the thermoelectric properties of Bi₂O₂Se

Modeling of electromagnetic radiation using a dual four-potential representation: from dipole blade radiators to ribbon loop-like antennas

Mechanical Performance of Friction Stir Welded Acrylonitrile Butadiene Styrene and polystyrene plates with and without Multiwall Carbon Nanotubes: A Comparative Study

Adiabatic propagation in nematic liquid crystals with competing nonlinearities

Ultrathin transparent indium tin oxide-based electrodes for enhanced performance of perovskite solar cells

Carbon quantum dots: synthesis, properties and multifaceted applications in biomedical imaging, environmental remediation and sensing technologies

Physica Scripta

Journal Citation Format

A journal article with 1 author

A journal article with 2 authors

A journal article with 3 authors

A journal article with 5 or more authors

Books Citation Format

Thesis Citation Format

Web sites Citation Format

Patent Citation Format

Staying up late manually editing references? ivySCI automatically matches journals and helps you generate references with a single click.

Share Submission Experience

Design of high power evanescent quantum dot distributed feedback lasers on Si

A Tunable Chiral Metasurface Useable in Terahertz Imaging and Wavefront Shaping

Broadband achromatic transmission stealth cloak based on all dielectric metasurfaces

Collaborative positioning for emergency rescuers based on INS, GPS and ZigBee

The effects of tungsten doping on the thermoelectric properties of Bi2O2Se

Modeling of electromagnetic radiation using a dual four-potential representation: from dipole blade radiators to ribbon loop-like antennas

Mechanical Performance of Friction Stir Welded Acrylonitrile Butadiene Styrene and polystyrene plates with and without Multiwall Carbon Nanotubes: A Comparative Study

Adiabatic propagation in nematic liquid crystals with competing nonlinearities

Ultrathin transparent indium tin oxide-based electrodes for enhanced performance of perovskite solar cells

Carbon quantum dots: synthesis, properties and multifaceted applications in biomedical imaging, environmental remediation and sensing technologies

The effects of tungsten doping on the thermoelectric properties of Bi₂O₂Se