Journal of Physics D: Applied Physics最新文献_第9页

Cellular response to plasma-generated electrical and chemical stimulation of equal electricity 细胞对等离子体产生的等量电刺激和化学刺激的反应

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-21 DOI: 10.1088/1361-6463/ad6267

Airi Nakayama, Siwei Liu, Ken-ichi Yano, Tomoki Nakajima and Takehiko Sato

{"title":"Cellular response to plasma-generated electrical and chemical stimulation of equal electricity","authors":"Airi Nakayama, Siwei Liu, Ken-ichi Yano, Tomoki Nakajima and Takehiko Sato","doi":"10.1088/1361-6463/ad6267","DOIUrl":"https://doi.org/10.1088/1361-6463/ad6267","url":null,"abstract":"Plasma medicine is a novel field of research that has the potential in life sciences, including cancer treatment. It has been believed that all of these potential applications depend on the chemical factor of the plasma. However, the electrical factors that are produced simultaneously with the chemical factors have not been researched thoroughly. To assess the effect of plasma on the response of cells, a system that enables simultaneous comparison of the effects of chemical and electrical factors of plasma with equal electricity was invented. This system separates the polarity of plasma and isolates the chemical species from the electric stimulation. Using this system, HT-1080 cells were exposed to plasma for 10 min, 1 h, and 24 h. The 10 min plasma treatment showed a clear difference in the polarity of plasma, where cells under exposure to positive plasma died while cells in other conditions survived. An hour of plasma treatment affected the cells under the negative plasma, where the cell viability was reduced to half. Meanwhile, the electric stimulation did not affect the cell viability but did alter the cell membrane. Collectively, this study demonstrates the differential effects of three factors (electric factor, positive plasma, negative plasma) under the same condition: both the electrical and chemical effects of plasma-generated stimuli with equal amounts of electricity were successfully observed.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743170","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}

引用次数: 0

Post-mortem study and long cycling stability of silica/carbon composite as anode in Li-ion cells 二氧化硅/碳复合材料作为锂离子电池阳极的死后研究和长循环稳定性

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-17 DOI: 10.1088/1361-6463/ad5b6f

Vaibhavi Gulavani, Musthafa Ottakam Thotiyl, Bibin John and Ashish Yengantiwar

{"title":"Post-mortem study and long cycling stability of silica/carbon composite as anode in Li-ion cells","authors":"Vaibhavi Gulavani, Musthafa Ottakam Thotiyl, Bibin John and Ashish Yengantiwar","doi":"10.1088/1361-6463/ad5b6f","DOIUrl":"https://doi.org/10.1088/1361-6463/ad5b6f","url":null,"abstract":"The present work emphases on the post-mortem study of silica/carbon composite as functional anode in Li-ion batteries (LIBs). Herein, the silica/carbon composite is synthesized by facile in-situ hydrothermal technique. The x-ray diffraction (XRD) pattern indicates the amorphous nature of silica/carbon composite. The stacked sheet-like morphology of silica/carbon composite is seen in the high-resolution transmission electron microscopy (HR-TEM) & scanning electron microscopy (SEM) images. In addition, Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, energy dispersive x-ray analysis (EDAX), and x-ray photoelectron spectra (XPS) characterizations of silica/carbon composite has been studied in detail. The rate capability of silica/carbon composite anode in LIB indicates 99% capacity retention after applying current density ranging from 50 mA g−1 to 1000 mA g−1, successively. The composite anode delivers a stable specific capacity ∼300 mAh g−1 at a current density of 100 mA g−1 for 500 cycles. Electrochemical impedance spectroscopy (EIS) study analyzed the faster Li-ion diffusion and increment in the diffusion coefficient by a factor of 1000 after 500 cycles. To the best of our knowledge, this is the first work on the post-mortem study of silica/carbon composite as anode in LIB. Post-cycling characterizations including XRD, FTIR, and SEM reveal the absence of any impurity phases and negligible volumetric expansion after prolonged cycling. It further confirms that the carbon present in the silica/carbon composite helps to accommodate the volumetric expansion of silica and prevents cracking of the anode over 500 cycles.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141743363","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}

引用次数: 0

Real-space calculation of thermal Hall effects in strained and disordered kagome ferromagnets 应变和无序卡戈梅铁磁体热霍尔效应的实空间计算

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-17 DOI: 10.1088/1361-6463/ad60da

Ning Zhang and Hengyi Xu

引用次数: 0

Upgrading the production of plasma-activated water for sterilization by preloading long-lived reactive species 通过预载长寿命活性物种提升用于灭菌的等离子活化水的生产水平

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-16 DOI: 10.1088/1361-6463/ad60d9

Zifeng Wang, Xiangyu Wang, Shenghang Xu, Dingxin Liu, Jingyao Zhang, Qiuyi Yue, Luge Wang, Pengfei Zhang, Yikang Jia, Jishen Zhang, Li Guo, Dandan Pei, Chang Liu and Mingzhe Rong

{"title":"Upgrading the production of plasma-activated water for sterilization by preloading long-lived reactive species","authors":"Zifeng Wang, Xiangyu Wang, Shenghang Xu, Dingxin Liu, Jingyao Zhang, Qiuyi Yue, Luge Wang, Pengfei Zhang, Yikang Jia, Jishen Zhang, Li Guo, Dandan Pei, Chang Liu and Mingzhe Rong","doi":"10.1088/1361-6463/ad60d9","DOIUrl":"https://doi.org/10.1088/1361-6463/ad60d9","url":null,"abstract":"Plasma-activated water (PAW) has broad prospects in the medical field because it is rich in reactive nitrogen and oxygen species. However, in most production processes of PAW, a large proportion of gaseous reactive species is converted into long-lived aqueous species with minor biochemical activity, and only a small proportion is converted into crucial short-lived aqueous species, which results in inefficient activation of PAW. Given the indispensability and easy availability of long-lived aqueous species, this study proposes to preload HNO3 and H2O2 into water and then generate plasma to induce short-lived aqueous species, thus improving the production rate of PAW. The addition of 1 mM HNO3 and 0.5% H2O2 results in a 100-fold increase in the production rate of the PAW with a bactericidal rate exceeding 99.9999%, and the preloaded HNO3 and H2O2 promote the dissolution of O3 and the generation of short-lived aqueous species, respectively. Moreover, the preloaded species improve the validity period of PAW and the resistance of sterilization to acid-base neutralizers. This study offers a novel approach for upgrading the production of PAW, which holds promise for realizing rapid PAW production with a portable device for clinical medical applications.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141717609","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}

引用次数: 0

Secondary electron emission yield in thick dielectric materials: a comparison between Kelvin probe and capacitive methods 厚介电材料中的二次电子发射率：开尔文探针法与电容法的比较

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-11 DOI: 10.1088/1361-6463/ad5c6f

R Mata, A Cros, B Gimeno and D Raboso

{"title":"Secondary electron emission yield in thick dielectric materials: a comparison between Kelvin probe and capacitive methods","authors":"R Mata, A Cros, B Gimeno and D Raboso","doi":"10.1088/1361-6463/ad5c6f","DOIUrl":"https://doi.org/10.1088/1361-6463/ad5c6f","url":null,"abstract":"The recent high demand of secondary electron emission yield (SEY) measurements in dielectric materials from space industry has driven SEY laboratories to improve their facilities and measurement techniques. SEY determination by the common capacitive method, also known as pulsed method, is well accepted and has given satisfactory results in most cases. Nevertheless, the samples under study must be prepared according to the experimental limitations of the technique, i.e. they should be manufactured separated from the devices representing faithfully the surface state of the own device and be as thin as possible. A method based on the Kelvin probe (KP) is proposed here to obtain the SEY characteristics of electrically floating Platinum, Kapton and Teflon placed over dielectric spacers with thicknesses ranging from 1.6 to 12.1 mm. The results are compared with those of the capacitive method and indicate that KP SEY curves are less sensitive to spacer thickness. An explanation based on the literature is also given. In all, we have established that KP is better suited for the analysis of dielectric samples thicker than 3 mm.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614875","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}

引用次数: 0

Consideration of the effect of nanoscale porosity on mass transport phenomena in PECVD coatings 考虑纳米级孔隙率对 PECVD 涂层中质量传输现象的影响

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-11 DOI: 10.1088/1361-6463/ad5e91

J Franke, F Zysk, S Wilski, M O Liedke, M Butterling, A G Attallah, A Wagner, T D Kühne and R Dahlmann

{"title":"Consideration of the effect of nanoscale porosity on mass transport phenomena in PECVD coatings","authors":"J Franke, F Zysk, S Wilski, M O Liedke, M Butterling, A G Attallah, A Wagner, T D Kühne and R Dahlmann","doi":"10.1088/1361-6463/ad5e91","DOIUrl":"https://doi.org/10.1088/1361-6463/ad5e91","url":null,"abstract":"Here we show a novel approach to characterize the gas transfer behavior of silicon-oxide (SiOx) coatings and explain the underlying dynamics. For this, we investigate the coating on a nm-scale both by measurement and simulation. Positron annihilation spectroscopy (PAS) and quantum mechanical electronic structure-based molecular dynamics simulations are combined to characterize the porous landscape of SiOx coatings. This approach analyses the influence of micropores smaller than 2 nm in diameter on gas permeation which are difficult to study with conventional methods. We lay out the main pore diameter ranges and their associated porosity estimates. An influence of layer growth on pore size and porosity was found, with an increased energy input during layer deposition leading to smaller pore sizes and a reduced porosity. The molecular dynamics simulations quantify the self-diffusion of oxygen and water vapor through those PAS deducted micropore ranges for hydrophilic and hydrophobic systems. The theoretical pore size ranges are fitting to our PAS results and complete them by giving diffusion coefficients. This approach enables detailed analysis of pore morphology on mass transport through thin film coatings and characterization of their barrier or membrane performance. This is a crucial prerequisite for the development of an exhaustive model of pore dominated mass transports in PECVD coatings.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612297","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}

引用次数: 0

Harnessing BN co-doping for superior thermal transport in phagraphene monolayer 利用 BN 共掺杂实现相纸单层的卓越热传输

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-10 DOI: 10.1088/1361-6463/ad5dcb

Asfakujjaman, Mainak Ghosh, Suman Chowdhury and Debnarayan Jana

{"title":"Harnessing BN co-doping for superior thermal transport in phagraphene monolayer","authors":"Asfakujjaman, Mainak Ghosh, Suman Chowdhury and Debnarayan Jana","doi":"10.1088/1361-6463/ad5dcb","DOIUrl":"https://doi.org/10.1088/1361-6463/ad5dcb","url":null,"abstract":"In this study, we thoroughly explored the thermal transport and thermoelectric properties of BN-co-doped phagraphene structures in the context of first-principles computations combined with machine learning interatomic potential (MLIP) techniques. Our results demonstrate that doping positions can critically tune the thermal properties, offering potential advantages for both thermoelectric and heat transfer applications. Notably, enhanced thermal conductivity has been obtained for phagraphene with 10 co-doping. Additionally, the rectangular structural symmetry of phagraphene plays an important role for targeted thermal transport. Further, we observe negative Grüneisen parameter in these structures, suggesting negative thermal expansion. This will serves as an unique mechanism for controlling the thermal conductivity at different frequencies. Interestingly, n-type behavior of the structures is indicative of its negative Seebeck coefficient within the temperature range of 300–900 K. Moreover, these structures display significantly larger electrical conductivity compared to other two-dimensional (2D) materials. Apart from that, the calculated figure of merit of the structures under a constant relaxation time at 300 K shows considerably better response for some specific doped structures. We believe this study will play an important role in understanding the importance of structural modifications in tailoring the thermal properties of carbon-based 2D systems.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141587230","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}

引用次数: 0

Biochemical evaluation of wound healing efficacy of cold plasma-conditioned media under different operational conditions 不同操作条件下冷等离子调节介质伤口愈合功效的生化评估

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-10 DOI: 10.1088/1361-6463/ad5c71

Sonakshi Puri, Sumit Kumar Mandal, Navin Kumar Sharma, Priti Pal, Ram Prakash Lamba, Vandana Miller, Udit Narayan Pal and P R Deepa

{"title":"Biochemical evaluation of wound healing efficacy of cold plasma-conditioned media under different operational conditions","authors":"Sonakshi Puri, Sumit Kumar Mandal, Navin Kumar Sharma, Priti Pal, Ram Prakash Lamba, Vandana Miller, Udit Narayan Pal and P R Deepa","doi":"10.1088/1361-6463/ad5c71","DOIUrl":"https://doi.org/10.1088/1361-6463/ad5c71","url":null,"abstract":"Wound healing is a dynamic and intricate biological process crucial for tissue repair and regeneration. This study explores the potential therapeutic impact of non-thermal plasma generated by a hand-held cold atmospheric pressure plasma jet (C-APPJ) source on fibroblast cells (NIH/3T3) in vitro. The sequential phases of wound healing—inflammation, cell proliferation, and tissue remodelling, were assessed in the context of cell migration and oxidative stress dynamics. Typically, plasma generates a mixture of several reactive oxygen/nitrogen (ROS/RNS) species. The present study investigates the safety and efficacy of C-APPJ under distinct operating conditions (argon (GI) and argon + nitrogen (GII)) and exposure times (1 min and 3 min). Cell viability assays confirmed the non-cytotoxic nature of the cold plasma conditioned medium. The levels of ROS/RNS and malondialdehyde (biomarker of oxidative stress) in the plasma-treated samples remained comparable with the control fibroblast cells grown in normal media, suggesting the favourable modulation of ROS by the cellular antioxidant mechanisms. Accelerated wound-closure rates from 6th hour to 24th hour in all the treated groups ranged from 38.76% to 45.66%, when compared to 34.25% in the control cells. Substantial cell migration leading to 51.59% of wound closure was recorded in the argon + nitrogen (GII) group exposed for 3 min. Taken together, the potential of cold plasma to effectively heal wounds without causing prolonged oxidative stress and chronic inflammation is implicated. These outcomes suggest scope for clinical application of C-APPJ as safe and cost-effective treatment of wounds (ulcers, burns, diabetic foot) and wound disinfection.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586976","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}

引用次数: 0

Interlayer coupled domain wall dynamics induced by external magnetic field in synthetic antiferromagnets 合成反铁磁体中外加磁场诱导的层间耦合畴壁动力学

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-09 DOI: 10.1088/1361-6463/ad5cfe

Amina Hadjoudja, Felipe Garcia-Sanchez, Luis Lopez-Diaz

引用次数: 0

Tunable plasmon-induced transparency in anisotropic graphene-black phosphorus photonic device for high-performance sensors and switchers 用于高性能传感器和开关的各向异性石墨烯-黑磷光子器件中的可调等离子体诱导透明度

IF 3.4 3区物理与天体物理

Journal of Physics D: Applied Physics Pub Date : 2024-07-09 DOI: 10.1088/1361-6463/ad5cff

Zhe Wang, Juan Xie, Chunzhen Fan

{"title":"Tunable plasmon-induced transparency in anisotropic graphene-black phosphorus photonic device for high-performance sensors and switchers","authors":"Zhe Wang, Juan Xie, Chunzhen Fan","doi":"10.1088/1361-6463/ad5cff","DOIUrl":"https://doi.org/10.1088/1361-6463/ad5cff","url":null,"abstract":"A novel photonic device composed of graphene and black phosphorus (G-BP) has been proposed, which achieves high-performance plasmon-induced transparency (PIT) effect within the THz range and maintains substantial tunability and anisotropy. The anisotropy of the PIT effect arises from the near-field coupling between two bright modes characterized by distinct effective electron masses of BP, resulting transparency window at 33.35 THz for TE polarization and at 26.92 THz for TM polarization. Through the modulation of Fermi energy in graphene, doping levels of BP and geometric parameters separately, a tunable transparency window is achieved. Notably, the convergence or divergence of the anisotropic transparency windows can be well manipulated with different BP doping levels. Furthermore, the proposed G-BP photonic device exhibits a high sensitivity to changes in the surrounding refractive index and substrates, with a maximum sensitivity of 12.04 THz/RI, rendering it suitable for sensor applications. Overall, the proposed photonic device exhibits notable PIT effects characterized by high anisotropic performance, substantial tunability, great sensitivity, and stability, making it a promising candidate for applications in sensors, polarizers, and switchers.","PeriodicalId":16789,"journal":{"name":"Journal of Physics D: Applied Physics","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141576455","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}

引用次数: 0