Journal of Physics D: Applied Physics最新文献

{"title":"Sulfur-regulated composition in CuInS₂ films for efficient solar cells","authors":"Longhui Lei, Wenbo Cao, Jiajin Kuang, Chaofan Zheng, Mingtai Wang","doi":"10.1088/1361-6463/add548","DOIUrl":"https://doi.org/10.1088/1361-6463/add548","url":null,"abstract":"Abstract A systematic investigation is conducted to determine the role of thiourea in regulating crystallization and defect formation in solution-processed CuInS 2 solar cells. By modulating the Cu:In:S stoichiometry (1:1:6–1:1:10), sulfur content is found to critically influence material properties. The optimal stoichiometry (1:1:8) balances the defects density, stabilizes the chalcopyrite phase, and suppresses deleterious secondary phases, yielding a peak efficiency of 5.16% ( V oc = 0.68 V, J sc = 11.91 mA cm −2 , FF = 63.52%). Excessive thiourea (1:1:10) induces defects (In Cu ) and (In i ), degrading device performance. These findings establish a dual mechanism for thiourea’s role in solar cell performance: regulating defects concentration and crystal phase composition, providing a theoretical guide for solution-processed CuInS 2 devices.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 23","pages":"235101-235101"},"PeriodicalIF":0.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147916578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Enhanced separation and migration of photocarriers by carbon-supported In₂O₃@CuInS₂ heterojunction for superior photocatalytic nitrogen fixation","authors":"Dongfeng Sun, Nandong Li, Yanning Qu, Rong-Fu Xiao, Bin Han, Guohui Dong, Yuan Yu, Shukai Ding","doi":"10.1088/1361-6463/add16b","DOIUrl":"https://doi.org/10.1088/1361-6463/add16b","url":null,"abstract":"Abstract Nitrogen activation utilizing clean solar energy represents a promising way to break through the limitations of industrial ammonia production under harsh conditions. However, the limited interfacial charge transfer of photocatalysts is a rate-determining factor for photocatalytic nitrogen reduction reactions. In this study, a carbon-supported C-In 2 O 3 @CuInS 2 was synthesized through the calcination of MIL-68 (In) under argon and sequential solvothermal method. The resulting catalyst exhibited remarkable activity, achieving an ammonia production rate of 33.38 μ mol·g −1 ·h −1 , significantly surpassing the performance of C-In 2 O 3 (trace) and CuInS 2 (9.494 μ mol·g −1 ·h −1 ). Crucially, the experimental results show that photocatalysts with carbon support can greatly improve the separation and migration of photocarriers by making a comparison of ammonia yield and electrochemical testing of C-In 2 O 3 @CuInS 2 and In 2 O 3 @CuInS 2 . This work provides a foundational strategy for designing heterojunctions to improve photocatalytic nitrogen fixation by optimizing photogenerated carrier migration.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 23","pages":"235502-235502"},"PeriodicalIF":0.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Parametric amplification of multimode high-kinetic inductance cavity","authors":"Yong-Qiang Xu, Shu-Kun Ye, Rui Wu, Zi-Qing Huang, Ranran Cai, Bao‐Chuan Wang, Hai-Ou Li, Gang Cao, Guo‐Ping Guo","doi":"10.1088/1361-6463/adcf35","DOIUrl":"https://doi.org/10.1088/1361-6463/adcf35","url":null,"abstract":"Abstract Parametric amplifiers have become significant components in qubit readout within circuit quantum electrodynamics. Devices based on high-kinetic inductance (HKI) material can provide an avenue to achieve the considerable gain of parametric amplification. In this work, we develop a parametric amplifier using a multimode HKI coplanar waveguide cavity. We explore two pumping schemes, achieving significant gains for multiple modes in both the monochromatic and bichromatic pump schemes. We first measure parametric amplification in the monochromatic pump scheme, achieving over <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\"> <mml:mrow> <mml:mn>10</mml:mn> <mml:mtext> </mml:mtext> <mml:mrow> <mml:mrow> <mml:mi>dB</mml:mi> </mml:mrow> </mml:mrow> </mml:mrow> </mml:math> gain in all modes. In the bichromatic pump scheme, two distinct gain regions emerge in the spectra, accompanied by a triangle-like pattern. Moreover, the bichromatic pump scheme yields a higher gain value than the monochromatic pump scheme, with the maximum gain exceeding <mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" overflow=\"scroll\"> <mml:mrow> <mml:mn>27</mml:mn> <mml:mtext> </mml:mtext> <mml:mrow> <mml:mrow> <mml:mi>dB</mml:mi> </mml:mrow> </mml:mrow> </mml:mrow> </mml:math> . This parametric amplifier holds potential applications, such as frequency-division multiplexing readout, which is beneficial for scaling up qubits in quantum computing.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 21","pages":"215101-215101"},"PeriodicalIF":0.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Phase-restoring subpixel image registration: enhancing motion detection performance in Fourier-domain optical coherence tomography.","authors":"Huakun Li, Bingyao Tan, Vimal Prabhu Pandiyan, Veluchamy Amutha Barathi, Ramkumar Sabesan, Leopold Schmetterer, Tong Ling","doi":"10.1088/1361-6463/adb3b4","DOIUrl":"10.1088/1361-6463/adb3b4","url":null,"abstract":"<p><p>Phase-sensitive Fourier-domain optical coherence tomography (FD-OCT) enables <i>in-vivo</i>, label-free imaging of cellular movements with detection sensitivity down to the nanometer scale, and it is widely employed in emerging functional imaging modalities, such as optoretinography (ORG), Doppler OCT, and optical coherence elastography. However, when imaging tissue dynamics <i>in vivo</i>, inter-frame displacement introduces decorrelation noise that compromises motion detection performance, particularly in terms of sensitivity and accuracy. Here, we demonstrate that the displacement-related decorrelation noise in FD-OCT can be accurately corrected by restoring the initial sampling points using our proposed Phase-Restoring Subpixel Image Registration (PRESIR) method. Derived from a general FD-OCT model, the PRESIR method enables translational shifting of complex-valued OCT images over arbitrary displacements with subpixel precision, while accurately restoring phase components. Unlike conventional approaches that shift OCT images either in the spatial domain at the pixel level or in the spatial frequency domain for subpixel correction, our method reconstructs OCT images by correcting axial displacement in the spectral domain (k domain) and lateral displacement in the spatial frequency domain. We validated the PRESIR method through simulations, phantom experiments, and <i>in-vivo</i> ORG in both rodents and human subjects. Our approach significantly reduced decorrelation noise during the imaging of moving samples, achieving phase sensitivity close to the fundamental limit determined by the signal-to-noise ratio.</p>","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 14","pages":"145102"},"PeriodicalIF":3.1,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11843479/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143482086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Efficient stripping and hydroxylating of h-BN filler by plasma bubble treatment for composite insulation improvement","authors":"Fan Li, Chuansheng Zhang, Yi Luo, Xiaoxiao Kong, Cheng Zhang, Boxue Du, Tao Shao","doi":"10.1088/1361-6463/adc93b","DOIUrl":"https://doi.org/10.1088/1361-6463/adc93b","url":null,"abstract":"Abstract Hexagonal boron nitride (h-BN) has emerged as a critical thermal management material in electrical insulation systems due to its superior thermal conductivity and dielectric properties. Nevertheless, suboptimal filler-matrix interfacial compatibility hinders both thermal conductivity enhancement and dielectric performance in composites. This study introduces an innovative plasma bubble treatment strategy, utilizing the discharge within bubbles to simultaneously achieve h-BN exfoliation and surface hydroxylation. By producing plasma in a 3% H 2 O 2 solution with Ar/O 2 mixed gas, hydroxyl groups are successfully grafted onto h-BN surfaces. This surface modification improves the silane grafting efficiency with KH560, resulting in improved filler dispersion within the epoxy resin (EP) and the introduction of deep charge traps in interfacial regions. Under 9.77 W discharge power, composites containing 20 wt% h-BN treated for 10 min exhibits optimal performance characteristics. The modified composite attains a 327% thermal conductivity of pure EP while showing superior dielectric properties with a 12.4% increase in breakdown strength relative to untreated composite. These findings present an effective surface engineering approach for developing high-performance polymer composites for electrical insulation applications.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 20","pages":"205501-205501"},"PeriodicalIF":0.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Insight into hollow electrode plasma jet array for tumor cell apoptosis via different O₂ concentrations","authors":"Zhijie Liu, Zekai Zhang, Xiaolong Wang, Hezhi Guo, Xin Li, Bolun Pang, Yuantao Zhang","doi":"10.1088/1361-6463/adc13b","DOIUrl":"https://doi.org/10.1088/1361-6463/adc13b","url":null,"abstract":"Abstract Hollow electrode discharge is commonly utilized across various fields, but the research on hollow electrode discharge plasma jet array and its corresponding anticancer effect remains limited, especially their induced liquid chemistry and biological effects. This study describes the generation of plasma multi-jet through a novel-designed hollow electrode array generator and the anticancer effect of plasma-activated water (PAW) through multi-jet treatment. The rise of O 2 concentration has affected the discharge morphology, electrical characteristics, and gaseous reactive species generation, resulting in differences in the liquid-phase chemical properties of PAW. Among these, the N 2 -related gaseous emissive species decrease with the rise of the O 2 ratio, while the O-related species show a first increasing and then decreasing trend. Furthermore, the PAW produced under 0% of O 2 contains more ONOO − and O 2 − species, while the PAW generated under 0.3% O 2 contains more H 2 O 2 and NO 2 − species. On this basis, the PAW generated at a relatively low O 2 percentage (0% and 0.3%) results in a higher inactivation efficiency against cancer cells due to the high concentrated H 2 O 2 , NO 2 − , and ONOO − /O 2 − . This study offers insights into the design of plasma generation devices and the preparation of PAW for practical tumor therapy.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 18","pages":"185202-185202"},"PeriodicalIF":0.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147891344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Cold atmospheric plasma counteracts oxidative stress and promotes dermal papilla cell proliferation and hair regrowth","authors":"Fan Bai, Fangyan Jia, Mingzhu Zhou, Yufei Zhang, Qin Chen, Min Gao, Xiaoying Ning, Zhu Yan, Xiaoming Liu, Michael G. Kong, Yumin Xia","doi":"10.1088/1361-6463/adbbff","DOIUrl":"https://doi.org/10.1088/1361-6463/adbbff","url":null,"abstract":"Abstract Alopecia is a commonly encountered condition primarily induced by multiple factors involving psychological and environmental changes. It is often accompanied by persistent oxidative stress and apoptosis of dermal papilla cells (DPCs), which induce disabilities in hair growth induction. Existing clinical approaches often aim at symptom treatment or recurrence reduction, and their efficacy is unsatisfactory. Cold atmospheric plasma (CAP) possesses potent antioxidant properties and ability to promote cell proliferation, as demonstrated in numerous studies. Here, we employed a CAP jet device to investigate the effects of plasma-activated medium (PAM) on the antioxidant levels and proliferative capacity of DPCs isolated from human hair follicles in vitro . Concurrently, we constructed a chronic restraint stress mouse model that manifested retardation of hair growth to explore the efficacy and safety of plasma-treated hydrogel (PTH) on hair regeneration. The results showed that PAM enhanced cellular antioxidant defenses by increasing superoxide dismutase enzyme activity and total glutathione synthesis while reducing intracellular reactive oxygen species (ROS) levels. Furthermore, PAM modulated the cell cycle to improve DPCs proliferation and upregulated protein expression within the Wnt/ β -catenin signaling pathway, which is implicated in hair regeneration. Similarly, PTH effectively reduced ROS levels in damaged hair follicle tissues of mice, enhanced Sirt1 and Nrf2 expression within hair follicle tissues to resist oxidative stress, alleviated mast cell degranulation along with infiltration of major histocompatibility complex class II + cells, and stimulated the transition of hair follicles from the telogen phase to anagen phase. Additionally, markers of hair follicle stem cells were significantly expressed in areas treated with PTH in mice, correlating with accelerated hair growth. In summary, the utilization of plasma-activated media, whether in vivo or in vitro , can enhance antioxidant defense mechanisms and facilitate hair regeneration.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 16","pages":"165401-165401"},"PeriodicalIF":0.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147904066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Van der Waals epitaxy of twisted bilayer and trilayer MoS₂ with strong coupling and interlayer exciton emission","authors":"Qingqing Cao, Meili Chen, Xinhui Yang, Mingyi Xu, Mengya Li, Chang Lu, Zhiyi Liu, Meili Long, Xiaoming Yuan","doi":"10.1088/1361-6463/adb9f5","DOIUrl":"https://doi.org/10.1088/1361-6463/adb9f5","url":null,"abstract":"Abstract Twisted bilayer (TB) MoS 2 has attracted great interest due to its application in twistronics. A modification of the conventional growth method is usually required to overcome the energy barrier between layers to grow TB MoS 2 with different angle. Hence direct one-step synthesis of MoS 2 with a large area, clean surface, and a wide twisted angle range is still a challenge. In this work, we show the direct growth of high-quality TB and trilayer of MoS 2 by a countercurrent physical vapor deposition method. We investigated the evolution of optical properties of twisted MoS 2 at the range from 0° to 60°. Raman and photoluminescence results show a strong relationship between interlayer coupling and the twisted angle of bilayer MoS 2 . Moreover, interlayer exciton was observed in TB MoS 2 for a large twisted angle range below 253 K. In comparison, no interlayer exciton related emission was observed for transferred bilayer MoS 2 , indicating that bottom–up growth of twisted MoS 2 presents better interlayer quality. Our results demonstrate a simple approach to produce twisted angle MoS 2 with high quality for twist-angle based optical and electronic properties investigations.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 16","pages":"165302-165302"},"PeriodicalIF":0.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://iopscience.iop.org/article/10.1088/1361-6463/adb9f5/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147887796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Construction of ZnO/oxygen-deficient Bi₂WO₆ photocatalyst for highly efficient degradation of TCH","authors":"Xiaojiao Wang, Lili Chen, Jiao Zhang, Baolin Xing, Bing Xu, Guangbao Mi, Baozhong Liu, Yuanfeng Wu, Lunjian Chen","doi":"10.1088/1361-6463/adb593","DOIUrl":"https://doi.org/10.1088/1361-6463/adb593","url":null,"abstract":"Abstract More and more attention has been paid to the photocatalytic degradation of tetracycline hydrochloride (TCH). Constructing heterojunctions and designing defect structures are important means to improve the separation efficiency of photogenerated carriers and catalytic activity. ZnO/BWO-x composite was synthesized through the solvothermal method. Compared with ZnO and BWO-x, ZnO/BWO-x has a wider visible light absorption range, higher photogenerated charge migration rate, and lower photogenerated electron–hole pair recombination rate. When the molar ratio of ZnO and BWO-O3 is 1:1, the prepared composite photocatalyst (ZnO/BWO-5) has the highest photocatalytic activity, and under visible light irradiation for 180 min, the degradation rate of TCH reaches 85.53% significantly higher than that before compounding. After further exploration, it is found that the photocatalytic effect of ZnO/BWO-5 is the best under the conditions of pH = 9, photocatalyst dosage of 40 mg, and tetracycline concentration of 20 mg l −1 . The reasons for the enhanced photocatalytic activity of ZnO/BWO-x composites are summarized as follows: (1) Oxygen vacancies reduce the band gap and improve the utilization of visible light; (2) The lower conduction band potential of ZnO can complement with Bi 2 WO 6 , and the staggered composite energy levels form a Z scheme heterojunction, which is conducive to the rapid separation of photogenerated carriers.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 15","pages":"155103-155103"},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147910513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

{"title":"Effect of AlN coating on the electromagnetic properties of FeSiAl soft magnetic composites","authors":"Rongdi Guo, Jiaxiang Qin, Guohua Wu, Zhongqiang Hu, Ming Liu","doi":"10.1088/1361-6463/adb29c","DOIUrl":"https://doi.org/10.1088/1361-6463/adb29c","url":null,"abstract":"Abstract Soft magnetic composites (SMCs) are considered key elements for attaining electromagnetic signal transmission and conversion. However, they require high permeability and low core losses to ensure the efficient and stable operation of electronic devices, such as inductors and sensors. To effectively address these issues, in this work, AlN nanopowders were used to coat FeSiAl spherical particles. In parallel, the effect of coating AlN nanopowders on the electromagnetic properties of FeSiAl SMCs was investigated. By performing energy dispersive spectroscopy analysis, AlN was confirmed to be attached to the FeSiAl spherical particles, indicating the existence of an excellent AlN coating quality. Although the incorporation of the AlN coating layer yielded a monotonic reduction in saturation magnetization intensity and effective permeability, it also effectively suppressed core losses. Due to the high-resistance of AlN, the high-resistance layer developed on the surface of the FeSiAl particles can substantially increase the resistivity of FeSiAl SMCs, and then the eddy current loss was suppressed. When coated with 1.5 wt% AlN, the FeSiAl SMCs exhibited the lowest core losses of 394 kW m −3 at 100 kHz, 100 mT, and room temperature. The proposed AlN-coated FeSiAl SMCs in this work exhibited a good overall performance, and are expected to be applied in high-performance inductor devices.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":"58 13","pages":"135005-135005"},"PeriodicalIF":0.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147895582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}