Journal of the Korean Physical Society最新文献_第7页

On trapping geometry for cold (^{87}{text {Rb}}) atoms in a radio-frequency dressed potential 射频修饰电位中冷(^{87}{text {Rb}})原子的俘获几何

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-04-03 DOI: 10.1007/s40042-026-01630-8

Sourabh Sarkar, S. P. Ram, Kavish Bhardwaj, Gunjan Verma, V. B. Tiwari, S. R. Mishra

引用次数: 0

Comparative evaluation of green-synthesized FeO, CuO, MnO, ZnO, NiO, and MgO nanoparticles in Fenton and photo-Fenton systems for molasses-based effluent treatment 绿色合成FeO、CuO、MnO、ZnO、NiO和MgO纳米颗粒在Fenton和光Fenton系统中用于糖蜜废水处理的比较评价

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-04-03 DOI: 10.1007/s40042-026-01639-z

Mueed Akhtar, Farrukh Naeem, Parveen Akhter, Nadeem Tariq, Shaista Javaid, Murid Hussain

{"title":"Comparative evaluation of green-synthesized FeO, CuO, MnO, ZnO, NiO, and MgO nanoparticles in Fenton and photo-Fenton systems for molasses-based effluent treatment","authors":"Mueed Akhtar, Farrukh Naeem, Parveen Akhter, Nadeem Tariq, Shaista Javaid, Murid Hussain","doi":"10.1007/s40042-026-01639-z","DOIUrl":"10.1007/s40042-026-01639-z","url":null,"abstract":"<div><p>Molasses-based wastewater has higher concentrations of chemical oxygen demand (COD), biological oxygen demand (BOD), and melanoidin concentrations. These types of wastewater are toxic and cannot be left untreated. In this study, a novel technique was used to synthesize Fe, Cu, Mn, Zn, Ni, and Mg improvised metal oxide (iMO) nanoparticles (NPs) from green tea extracts. These NPs were analyzed by using XRD, SEM, and FT-IR techniques. Consequently, these NPs were applied in a photo-Fenton reaction (PFR) and dark-Fenton reaction (DFR) for BOD, COD, and melanoidin removal. An XRD analysis revealed that iFeO, iCuO, iMnO, iZnO, iNiO, and iMgO had particle sizes of 8.19, 16.67, 31.65, 13.66, 25.02, and 35.81 nm, respectively. Moreover, FT-IR analysis showed the existence of methylene, metal oxide, carbonyl, nitrile, alkyne, and hydroxyl groups. Further, the SEM experiments revealed the presence of smaller-sized particles forming aggregates and, in some cases, particles with well-defined edges. Mixed results were obtained for both the PFR and DFR for melanoidin removal. For the PFR, iZnO NPs showed the best performance for melanoidin removal. For the DFR, iFeO NPs exhibited the best performance, whereas for COD and BOD removal, iCuO performed best at approximately 99%. This study provides and extends new opportunities for treating complex industrial wastewater using the Fenton oxidation reaction by utilizing a variety of MO NPs.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"89 1","pages":"33 - 52"},"PeriodicalIF":1.0,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revisiting the interfacial structure of graphene quasicrystal growth on SiC 石墨烯准晶在碳化硅上生长的界面结构

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-04-03 DOI: 10.1007/s40042-026-01637-1

Seong Hyun Im, Gun Woo Park, Do Hyun Kim, Do Hee Lee, Wonhui Lee, Namryeol Kim, Kyu Hwa Choi, Joung Real Ahn

{"title":"Revisiting the interfacial structure of graphene quasicrystal growth on SiC","authors":"Seong Hyun Im, Gun Woo Park, Do Hyun Kim, Do Hee Lee, Wonhui Lee, Namryeol Kim, Kyu Hwa Choi, Joung Real Ahn","doi":"10.1007/s40042-026-01637-1","DOIUrl":"10.1007/s40042-026-01637-1","url":null,"abstract":"<div><p>We revisit the interfacial structure underlying the growth of graphene quasicrystals on SiC, previously realized by a twisted bilayer graphene with a twist angle of 30°. While the formation of graphene quasicrystals via an h-BN-mediated growth process has been established, the microscopic nature of the interface between the overlayer and the SiC substrate has remained unclear. Using a combination of low-energy electron diffraction, angle-resolved photoemission spectroscopy, and core-level X-ray photoelectron spectroscopy, we show that an amorphous boron–nitrogen buffer layer exists between h-BN with R0° orientation and the SiC substrate. Importantly, this boron–nitrogen buffer layer persists even after the conversion of h-BN into graphene with R0° orientation, contrary to the conventional assumption that R0 graphene resides on a crystalline carbon-buffer layer. Our results clarify the interfacial structure in SiC-based graphene quasicrystal growth and provide a refined framework for understanding boron-nitrogen-assisted epitaxial graphene systems.</p></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"89 2","pages":"123 - 130"},"PeriodicalIF":1.0,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40042-026-01637-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148366075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structure and transport properties of indium selenide thin films grown by sputtering: effect of post-deposition annealing 溅射生长硒化铟薄膜的结构和输运性质：沉积后退火的影响

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-03-30 DOI: 10.1007/s40042-026-01628-2

Minh-Anh Nguyen Tran, Viet Huong Nguyen, Dinh Tam Phuong, Hung-Anh Tran Vu, Nguyen Dinh Nam, The Long Nguyen, Anh Tuan Duong

{"title":"Structure and transport properties of indium selenide thin films grown by sputtering: effect of post-deposition annealing","authors":"Minh-Anh Nguyen Tran, Viet Huong Nguyen, Dinh Tam Phuong, Hung-Anh Tran Vu, Nguyen Dinh Nam, The Long Nguyen, Anh Tuan Duong","doi":"10.1007/s40042-026-01628-2","DOIUrl":"10.1007/s40042-026-01628-2","url":null,"abstract":"<div><p>In this study, Indium selenide thin films were fabricated by magnetron sputtering and systematically investigated as a function of post-deposition annealing temperature. Structural analysis reveals that the as-grown films predominantly crystallize in a poorly ordered In<sub>2</sub>Se<sub>3</sub> phase. With increasing annealing temperature, a pronounced phase transition from In<sub>2</sub>Se<sub>3</sub> to layered InSe is observed, accompanied by a significant improvement in crystallinity and the emergence of highly textured InSe (00 l) orientations. Surface morphology evolves concurrently from a granular structure toward a more uniform and dense film, indicating enhanced atomic rearrangement during annealing. Electrical transport measurements demonstrate that the phase transition strongly affects the conduction behavior, leading to marked changes in resistivity with annealing temperature. In addition, photoluminescence spectroscopy exhibits a clear energy shift from the characteristic emission of In<sub>2</sub>Se<sub>3</sub> to that of InSe, providing optical confirmation of the structural transformation. These results highlight post-deposition annealing temperature as a key parameter for controlling the phase, crystal structure, and optoelectronic properties of sputtered indium selenide thin films.</p></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"89 1","pages":"53 - 61"},"PeriodicalIF":1.0,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental evaluation of line-type water leakage location detection sensor and its application at Korea Multi-purpose Accelerator Complex 线型漏水定位传感器的试验评价及其在韩国多用途加速器园区的应用

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-03-30 DOI: 10.1007/s40042-026-01613-9

Kyung Hyun Kim, Jung Goo Hong

{"title":"Experimental evaluation of line-type water leakage location detection sensor and its application at Korea Multi-purpose Accelerator Complex","authors":"Kyung Hyun Kim, Jung Goo Hong","doi":"10.1007/s40042-026-01613-9","DOIUrl":"10.1007/s40042-026-01613-9","url":null,"abstract":"<div><p>A cable-type water leak detection sensor capable of visually pinpointing leaks along its length was evaluated for application in a proton accelerator cooling system. A dedicated 10 m test stand was constructed to assess the sensor’s performance under conditions simulating accelerator cooling water. The position detection water leakage sensor (AD-LS) detected minute leaks within seconds and provided quantitative location readouts. For tap water, increasing leak volume reduced the detection response time to below 4 s for leaks exceeding 400 µL. Alarm signals reset automatically as the water evaporated, and the sensor’s color indication returned to its normal state within 54 min. For low-conductivity water (2.9–13.9 MΩ cm), leaks were detected within 80 s, and alarm recovery times remained below 19 min, showing limited dependence on water resistivity. Repeated leak tests yielded a standard deviation of 33 cm in location error over a 10 m sensor length, indicating sufficient spatial resolution for practical maintenance. Following validation on the test stand, seven sensor circuits were installed in a 100 MeV proton accelerator facility. The system successfully detected an actual cooling-water leak in real time and provided accurate location information, enabling prompt corrective action. These results demonstrate the practical applicability of the AD-LS sensor for early leak detection and localization in accelerator environments.</p></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"89 on","pages":"503 - 517"},"PeriodicalIF":1.0,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Designing minimalistic variational quantum ansatz inspired by algorithmic cooling 受算法冷却启发，设计简约的变分量子ansatz

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-03-30 DOI: 10.1007/s40042-026-01627-3

Soyoung Shin, Ha Eum Kim, Jaewan Kim, Hyeonjun Yeo, Wonho Jhe, Kabgyun Jeong

{"title":"Designing minimalistic variational quantum ansatz inspired by algorithmic cooling","authors":"Soyoung Shin, Ha Eum Kim, Jaewan Kim, Hyeonjun Yeo, Wonho Jhe, Kabgyun Jeong","doi":"10.1007/s40042-026-01627-3","DOIUrl":"10.1007/s40042-026-01627-3","url":null,"abstract":"<div><p>Variational quantum algorithms offer a practical route to low-energy state preparation on near-term hardware, but performance depends strongly on ansatz design. We introduce the Heat-Exchange (HE) ansatz, a compact circuit family inspired by heat-bath algorithmic cooling and built from a tunable exchange interaction between a system qubit and an auxiliary bath qubit. On superconducting processors the exchange evolution <span>(U_{textrm{HE}}(theta )=exp [-itheta (XX+YY)/2])</span> is implemented digitally as a shallow compiled gate sequence, requiring no mid-circuit reset, measurement, or feedback. We benchmark HE on two complementary tasks: weighted MaxCut on random complete graphs (noise-free simulation and hardware runs on <span>ibm_strasbourg</span> with readout error mitigation) and a one-dimensional Heisenberg chain with a pinned site within a dissipative-VQE-style workflow (noise-free simulation). HE increases the probability of sampling the best cut compared with a hardware-efficient baseline and QAOA under limited evaluation budgets and yields ground-state energies with sub-percent relative error for the impurity chain. These results highlight exchange-driven cooling blocks as compact, parameter-efficient, hardware-compatible primitives for near-term variational workflows.</p></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"89 1","pages":"1 - 11"},"PeriodicalIF":1.0,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40042-026-01627-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and implementation of a Zynq SoC-based digital RF interlock system for the 100 MeV linear accelerator at KAERI KAERI 100 MeV直线加速器中基于Zynq soc的数字射频联锁系统的设计与实现

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-03-25 DOI: 10.1007/s40042-026-01629-1

Young-Gi Song, Hae-Seong Jeong, Jae-Ha Kim, Sung-Yun Cho, Hyeok-Jung Kwon

{"title":"Design and implementation of a Zynq SoC-based digital RF interlock system for the 100 MeV linear accelerator at KAERI","authors":"Young-Gi Song, Hae-Seong Jeong, Jae-Ha Kim, Sung-Yun Cho, Hyeok-Jung Kwon","doi":"10.1007/s40042-026-01629-1","DOIUrl":"10.1007/s40042-026-01629-1","url":null,"abstract":"<div><p>The high-power RF system at the Korea Multipurpose Accelerator Complex (KOMAC) operates at 350 MHz with a peak power of 1.6 MW, a pulse width of 1.5 ms. The maximum beam repetition rate is 120 Hz at 20 MeV and 60 Hz at 100 MeV linac sections, respectively. Stable accelerator operation requires strict RF amplitude and phase stability within 1% and 1°, as well as cavity resonance detuning control within 10% of the RF bandwidth. To satisfy these demanding operational conditions, a digital high-power RF interlock system has been developed. The system supports remote and automatic threshold reconfiguration and is fully integrated into the EPICS control environment for centralized monitoring and operation. A Zynq SoC-based architecture digitizes forward, reverse, and pickup signals using ADCs, converts them into calibrated power values and enables waveform and power monitoring during normal operation. In addition, a built-in postmortem function records pre and postinterlock data, allowing operators to identify fault mechanisms and root causes with high temporal resolution. This paper presents the design and implementation of an RF protection system optimized for the 100 MeV proton linac at KOMAC, which consists of nine klystrons, nine circulators, and thirteen RF windows. Compared with the conventional analog interlock system, the proposed digital platform significantly enhances RF stability, fault diagnostics, and operational flexibility.</p></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"89 on","pages":"494 - 502"},"PeriodicalIF":1.0,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148807335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A simulation study on resonant tunneling diodes with auxiliary quantum wells based on a self-consistent Wigner–Poisson equation 基于自洽维格纳-泊松方程的辅助量子阱共振隧道二极管的仿真研究

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-03-24 DOI: 10.1007/s40042-026-01614-8

Joon-Ho Lee, Joonho Park, Dongyel Kang

{"title":"A simulation study on resonant tunneling diodes with auxiliary quantum wells based on a self-consistent Wigner–Poisson equation","authors":"Joon-Ho Lee, Joonho Park, Dongyel Kang","doi":"10.1007/s40042-026-01614-8","DOIUrl":"10.1007/s40042-026-01614-8","url":null,"abstract":"<div><p>We performed a simulation study on resonant tunneling diodes (RTDs) with auxiliary wells (emitter prewell, center subwell, and collector postwell) using self-consistent solutions based on a Wigner–Poisson equation. We previously performed a simulation study on RTDs with auxiliary wells using the Wigner transport equation within the framework of the flat-band model. The flat-band model has a major limitation in that it neglects Coulomb interactions and employs linear potential profiles as input to the Wigner transport equation. The present study reassesses the performance of RTDs with auxiliary wells using the self-consistent solutions instead of the flat-band model. The main findings of this study are summarized as follows. As the prewell width increases, the peak voltage (<span>(V_textrm{p})</span>) increases for widths below 5 nm, whereas a further increase beyond 5 nm leads to a reduction in <span>(V_textrm{p})</span>. In contrast, increasing the subwell width consistently decreases <span>(V_textrm{p})</span>. Both the prewell and the subwell made clear contributions to the increase in PVR (peak-to-valley current ratio), and the prewell was more effective than the subwell in improving the PVR. RTDs with both a prewell and a subwell achieved a greater improvement in PVR compared to RTDs with only one auxiliary well. Calculations for an RTD with appropriately chosen prewell and subwell widths yielded an optimal PVR value. The postwell yielded a higher PVR compared to the RTD without auxiliary wells, but lower than those achieved with the prewell or subwell. In addition, variations in the postwell width did not produce any significant effect on the PVR.\u0000</p></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"89 1","pages":"19 - 32"},"PeriodicalIF":1.0,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal gradient-driven pure spin-current generation in silicene–h-BN–silicene heterojunction analysis 硅烯- h- bn -硅烯异质结分析中热梯度驱动的纯自旋电流产生

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-03-24 DOI: 10.1007/s40042-026-01624-6

Gul Faroz A. Malik, Mubashir A. Kharadi, Hilal A. Bhat, Farooq A. Khanday

{"title":"Thermal gradient-driven pure spin-current generation in silicene–h-BN–silicene heterojunction analysis","authors":"Gul Faroz A. Malik, Mubashir A. Kharadi, Hilal A. Bhat, Farooq A. Khanday","doi":"10.1007/s40042-026-01624-6","DOIUrl":"10.1007/s40042-026-01624-6","url":null,"abstract":"<div><p>Spin caloritronics, an emerging field, deals with the transport of spin currents under the influence of a thermal gradient, and the “spin-dependent Seebeck effect” (SDSE) and spin-filtering effect are two of the most important parameters describing the relationship between the spin current and the temperature gradient. In this paper, a silicene electrode and a zigzag hexagonal boron nitride (h-BN) scattering region-based heterojunction have been proposed. This device can produce a pure spin current with minimal values of charge current. The zigzag silicene nanoribbons (ZSiNRs) are used as ferromagnetic electrodes for spin polarization and electron detection. While the scattering region made of h-BN introduces spin-scattering, we get the spin-dependent transmission at equilibrium around the Fermi level. For calculations, density functional theory (DFT) coupled with non-equilibrium Green’s function (NEGF) has been used. The results suggest that a pure spin current free from charge current is produced using the proposed device. This device has the added advantage of expected integration with already existing silicon-based devices due to the silicene-based electrodes.</p></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"89 1","pages":"91 - 100"},"PeriodicalIF":1.0,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148261625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prospects for RAON experiments with the KISTI-6 supercomputer 在kstii -6超级计算机上进行RAON实验的展望

IF 1 4区物理与天体物理

Journal of the Korean Physical Society Pub Date : 2026-03-24 DOI: 10.1007/s40042-026-01625-5

Kihyeon Cho

引用次数: 0