Current Applied Physics最新文献

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Polythiophene nanostructure film deposited using a bump electrode in atmospheric pressure plasma polymerization for increased film uniformity 在常压等离子体聚合中采用凹凸电极沉积聚噻吩纳米结构薄膜,以提高薄膜的均匀性
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2025-01-07 DOI: 10.1016/j.cap.2025.01.004
Jae Young Kim , Sebinn Jang , Hyojun Jang , Jeongbin Nam , Habeeb Olaitan Suleiman , Eun Young Jung , Choon-Sang Park , Heung-Sik Tae
{"title":"Polythiophene nanostructure film deposited using a bump electrode in atmospheric pressure plasma polymerization for increased film uniformity","authors":"Jae Young Kim ,&nbsp;Sebinn Jang ,&nbsp;Hyojun Jang ,&nbsp;Jeongbin Nam ,&nbsp;Habeeb Olaitan Suleiman ,&nbsp;Eun Young Jung ,&nbsp;Choon-Sang Park ,&nbsp;Heung-Sik Tae","doi":"10.1016/j.cap.2025.01.004","DOIUrl":"10.1016/j.cap.2025.01.004","url":null,"abstract":"<div><div>We propose a plasma reactor with a multiple bump-shaped wire electrode to increase the plasma volume for atmospheric pressure (AP) plasma polymerization. Triangular bumps are added to the tungsten wire in a plasma reactor in the form of a vessel capable of generating plasma. Since the discharge is initiated and maintained at the lower part of the triangular bump electrode, the effective volume of the glow plasma can be increased as the number of bumps increases. Even though a discharge imbalance due to differences in bump positions can adversely affect the uniformity of polymerized films, rotating the substrate can greatly improve film uniformity. With the developed AP plasma reactor, polythiophene (PTh) nanostructure films are synthesized and both the film characteristics and uniformity of the PTh nanostructures are investigated in detail. Additionally, conductive PTh films are produced through an iodine doping process, and the chemical properties and electrical stability of the doped PTh films are thoroughly examined.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 152-162"},"PeriodicalIF":2.4,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170842","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
Tailoring the electrochemical performance of the polymer electrolyte using Na2H20B4O17 for magnesium sulfur battery applications 使用Na2H20B4O17定制用于镁硫电池应用的聚合物电解质的电化学性能
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2025-01-07 DOI: 10.1016/j.cap.2025.01.006
M.A. Attallah, E. Sheha
{"title":"Tailoring the electrochemical performance of the polymer electrolyte using Na2H20B4O17 for magnesium sulfur battery applications","authors":"M.A. Attallah,&nbsp;E. Sheha","doi":"10.1016/j.cap.2025.01.006","DOIUrl":"10.1016/j.cap.2025.01.006","url":null,"abstract":"<div><div>Due to the construction's low cost, ecological appeal, friendliness, great theoretical density, and reliability, the Mg-S battery is an encouraging substitute for the pillar lithium battery. Nevertheless, self-discharge, the delayed conversion reaction pathway, and the absence of readily compatible electrolytes continue to restrict its beneficial uses. In this work, polymer electrolyte used 0.7 wt% polyvinyl alcohol (PVA), (0.3-x)<sub>wt.%</sub>(Mg(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub>) and <sub>xwt.%</sub>Na<sub>2</sub>H<sub>20</sub>B<sub>4</sub>O<sub>17</sub> (x = 0,0.01,0.02,0.03,0.04,0.05) (PE<sub>x</sub>) have been prepared and characterized for usage in Mg-S batteries. Integrating the PVA_<sub>(0.3-x)wt.%</sub> (Mg(CF<sub>3</sub>SO<sub>3</sub>)<sub>2</sub>)_ <sub>0.04</sub>Na<sub>2</sub>H<sub>20</sub>B<sub>4</sub>O<sub>17</sub> (X<sub>4</sub>) with tetraethylene glycol dimethyl ether (G<sub>4</sub>) demonstrates effective Mg plating and stripping behavior, good anodic stability (versus Mg/Mg <sup>2+</sup>), and a significant ionic conductivity (8.09 <span><math><mrow><mo>×</mo></mrow></math></span> 10<sup>−7</sup> S cm<sup>−1</sup> at 323 K). The Mg-S is assembled using an X<sub>4</sub>_G<sub>4</sub> electrolyte and delivers a reversible capacity of 100 mAh g<sup>−1</sup> after 30 cycles.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 175-183"},"PeriodicalIF":2.4,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169211","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
Structural and luminescent properties of water-quenched Eu3+-doped HfW2O8 with negative thermal expansion 负热膨胀水淬Eu3+掺杂HfW2O8的结构和发光性能
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2025-01-06 DOI: 10.1016/j.cap.2025.01.005
K.C. Lee, J.H. Han, S.W. Wi, Y.S. Lee
{"title":"Structural and luminescent properties of water-quenched Eu3+-doped HfW2O8 with negative thermal expansion","authors":"K.C. Lee,&nbsp;J.H. Han,&nbsp;S.W. Wi,&nbsp;Y.S. Lee","doi":"10.1016/j.cap.2025.01.005","DOIUrl":"10.1016/j.cap.2025.01.005","url":null,"abstract":"<div><div>This study represents the first attempt to correlate the photoluminescence properties of Eu<sup>3+</sup>-doped HfW<sub>2</sub>O<sub>8</sub> (Hf<sub>1-x</sub>Eu<sub>x</sub>W<sub>2</sub>O<sub>8</sub>) with their novel thermal structural changes, i.e., negative thermal expansion (NTE). We synthesized Hf<sub>1-x</sub>Eu<sub>x</sub>W<sub>2</sub>O<sub>8</sub> (x = 0, 0.01, 0.03, 0.05, 0.07, 0.09, 0.12, and 0.15) via a fast solid state reaction method with water quenching. Temperature dependent X-ray diffraction patterns exhibited the phase transition from α-phase (<em>P2</em><sub><em>1</em></sub><em>3</em>, cubic) to β-phase (<em>Pa-3</em>, cubic) as the temperature increased from room temperature to 200 °C, along with highly linear contraction of lattice constants. The thermal expansion coefficient and the volume thermal expansion coefficient were determined as approximately −1.1 × 10<sup>−5</sup> and −3.4 × 10<sup>−5</sup>, respectively. In the temperature dependent photoluminescence measurement, together with the thermal quenching behavior, we found that the asymmetric ratios decreased in accord with the structural change to higher symmetry. These findings reveal that the luminescent properties of Eu<sup>3+</sup> are closely related to the structural properties in NTE HfW<sub>2</sub>O<sub>8</sub>.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 130-137"},"PeriodicalIF":2.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170838","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
Exploring the multifunctionality of carbon dots: Advances in synthesis, properties, and applications 探索碳点的多功能性:合成、性质和应用的进展
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2025-01-04 DOI: 10.1016/j.cap.2025.01.003
Soumya Pandit , Nishant Ranjan , Rajan Verma , Kuldeep Sharma , Richa Tomar , Firdaus Mohamad Hamzah
{"title":"Exploring the multifunctionality of carbon dots: Advances in synthesis, properties, and applications","authors":"Soumya Pandit ,&nbsp;Nishant Ranjan ,&nbsp;Rajan Verma ,&nbsp;Kuldeep Sharma ,&nbsp;Richa Tomar ,&nbsp;Firdaus Mohamad Hamzah","doi":"10.1016/j.cap.2025.01.003","DOIUrl":"10.1016/j.cap.2025.01.003","url":null,"abstract":"<div><div>Owing to their small size, and unique physical and chemical properties, zero-dimensional carbon nanomaterials, carbon dots (CDs) have been increasingly critically analyzed for their potential applications in the fields of biology, chemistry, food science, and energy. This study systematically explores the multifunctional capabilities of CDs, emphasizing recent advancements in their synthesis techniques, precise characterization methods, and their tailored applications across interdisciplinary domains. The applications of CDs, which are generally smaller than 10 nm, in myriad fields are ascribed to their intrinsic merits of good biocompatibility, little cytotoxicity, good stability, and large specific surface area. The development of CDs along with their accurate characterization, and their successful implementation into faster, less expensive, and more reliable systems in a variety of scientific fields are testimony to how science has advanced and merged to create interdisciplinary fields. Despite extensive research, there is still the need to overcome the problem of large-scale production and improve quantum yield as well as functionality for specific applications, which this study seeks to analyze. Thus, a new era in nanotechnology has begun with the advancement in the exploration of CDs for applications in new and emerging scientific fields. CDs exhibit a huge number of distinctive physiochemical, photophysical, and photochemical properties which makes them a suitable platform for applications related to imaging, environmental remediation, catalysis, biology, and energy. The present research, therefore, focuses on the function and importance of CDs, as well as their synthesis, properties, and new developments in several fields of application.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 106-119"},"PeriodicalIF":2.4,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169630","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
Eliminating adhesive layers in silver metallization: A comparative study of glass cleaning methods for enhanced hydroxylation and adhesion 消除银金属化中的粘合层:增强羟基化和粘合的玻璃清洁方法的比较研究
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2025-01-03 DOI: 10.1016/j.cap.2025.01.002
Amnani Abu Bakar , N.H. Hashim , H.A. Tajuddin , A.S. Sadun , Z.H.Z. Abidin
{"title":"Eliminating adhesive layers in silver metallization: A comparative study of glass cleaning methods for enhanced hydroxylation and adhesion","authors":"Amnani Abu Bakar ,&nbsp;N.H. Hashim ,&nbsp;H.A. Tajuddin ,&nbsp;A.S. Sadun ,&nbsp;Z.H.Z. Abidin","doi":"10.1016/j.cap.2025.01.002","DOIUrl":"10.1016/j.cap.2025.01.002","url":null,"abstract":"<div><div>Achieving robust adhesion and cost-efficiency in silver (Ag) thin films is pivotal for advancing microelectronic applications, owing to Ag's exceptional low resistivity and thermal stability. This study investigates an optimized approach to hydroxylate glass substrates, effectively eliminating the reliance on conventional adhesive layers. Among five chemical cleaning methods evaluated, immersion in concentrated H₂SO₄, followed by thorough rinsing with deionized water and ultrasonication in ethanol, emerged as the most effective. This method produced highly hydrophilic surfaces with a contact angle (CA) of 6.6°. The resulting Ag films, deposited via physical vapor deposition, demonstrated excellent adhesion without peeling, while also exhibiting smooth and uniform surfaces ideal for subsequent functionalization. By streamlining substrate preparation, this methodology enhances the fabrication efficiency of high-performance microelectronic devices, offering a practical and scalable solution for industrial applications.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 138-143"},"PeriodicalIF":2.4,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170839","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
Enhanced energy storage performance of lead-free bismuth ferrite-strontium titanate multilayers via polarization spiral structures 利用极化螺旋结构增强无铅铁酸铋-钛酸锶多层膜的储能性能
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2025-01-02 DOI: 10.1016/j.cap.2024.12.011
Ha Thi Dang , Ba-Hieu Vu , Van-Hai Dinh , Le Van Lich
{"title":"Enhanced energy storage performance of lead-free bismuth ferrite-strontium titanate multilayers via polarization spiral structures","authors":"Ha Thi Dang ,&nbsp;Ba-Hieu Vu ,&nbsp;Van-Hai Dinh ,&nbsp;Le Van Lich","doi":"10.1016/j.cap.2024.12.011","DOIUrl":"10.1016/j.cap.2024.12.011","url":null,"abstract":"<div><div>The quest for environmentally friendly lead-free dielectrics with exceptional energy storage performance poses a significant challenge. Here, we propose an alternative approach through a rational design of lead-free ferroelectric/paraelectric (BiFeO<sub>3</sub>/SrTiO<sub>3</sub>) multilayers. Utilizing the phase-field model, we demonstrate that the energy storage density and charge–discharge efficiency can be optimized by adjusting the volume fractions of BiFeO<sub>3</sub>. A volume fraction of 0.69 BiFeO<sub>3</sub> yields the highest discharge energy storage density (58.01 J/cm<sup>3</sup>) and near-perfect charge-discharge efficiency (99.8%) at 4 MV/cm. The multilayers exhibit varying hysteresis behaviors, from ferroelectric to relaxor to paraelectric-like characteristics, depending on the BiFeO<sub>3</sub> ratio. This study reveals that different polarization domain structures correspond to these behaviors, transitioning from stripe to spiral to in-plane patterns as the ferroelectric volume is reduced. Notably, the polarization spiral structure maintains excellent energy storage across temperatures up to 550<!--> <sup>∘</sup>C. These insights are crucial for developing high-performance dielectrics for electrical energy storage.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 91-98"},"PeriodicalIF":2.4,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169628","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
Magnetic-field-tuned superconductor-to-insulator transition via mosaic phase in cuprate thin films 铜薄膜中通过镶嵌相实现的磁场调谐超导体到绝缘体的转变
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2025-01-02 DOI: 10.1016/j.cap.2024.12.012
Han-Byul Jang , Jaehyun Lee , Younjung Jo , Chan-Ho Yang
{"title":"Magnetic-field-tuned superconductor-to-insulator transition via mosaic phase in cuprate thin films","authors":"Han-Byul Jang ,&nbsp;Jaehyun Lee ,&nbsp;Younjung Jo ,&nbsp;Chan-Ho Yang","doi":"10.1016/j.cap.2024.12.012","DOIUrl":"10.1016/j.cap.2024.12.012","url":null,"abstract":"<div><div>The magnetic-field-induced superconductor-to-insulator transition (SIT) was investigated in highly disordered La<sub>1.85</sub>Sr<sub>0.15</sub>CuO<sub>4</sub> thin films. By systematically reducing the film thickness, disorder effects were enhanced, leading to the coexistence of superconducting and insulating phases at low temperatures. Electronic transport measurements revealed the formation of an intermediate mosaic phase, where localized Cooper pairs coexist with a coherent superconducting state. Near the quantum phase transition, scaling analysis determined a critical resistance <em>R</em><sub>c</sub> = 5.72 kΩ, consistent with the universal quantum resistance <em>R</em><sub>Q</sub> = <em>h</em>/4<em>e</em><sup>2</sup> for Cooper pairs. The critical product of the spatial and dynamic critical exponents <span><math><mrow><mi>z</mi><mi>ν</mi><mo>=</mo><mn>1.33</mn></mrow></math></span> aligns with the classical percolation universality class, emphasizing the role of percolation in governing the SIT under strong disorder. These results provide new insights into the quantum critical behavior and phase evolution of disordered superconducting systems.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 120-124"},"PeriodicalIF":2.4,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170840","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
Carbon nanoscroll-based memory cell 基于碳纳米卷的存储电池
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2024-12-31 DOI: 10.1016/j.cap.2024.12.009
Andrei I. Siahlo , Sergey A. Vyrko , Andrey M. Popov , Nikolai A. Poklonski , Yurii E. Lozovik
{"title":"Carbon nanoscroll-based memory cell","authors":"Andrei I. Siahlo ,&nbsp;Sergey A. Vyrko ,&nbsp;Andrey M. Popov ,&nbsp;Nikolai A. Poklonski ,&nbsp;Yurii E. Lozovik","doi":"10.1016/j.cap.2024.12.009","DOIUrl":"10.1016/j.cap.2024.12.009","url":null,"abstract":"<div><div>The scheme and operational principles of the nanoelectromechanical memory cells are proposed. These cells, which use two electrodes and a third gate electrode, operate by electrostatic unrolling of a carbon nanoscroll due to an applied voltage. Memory cell operation relies on two stable states: nonconducting Off state (rolled nanoscroll) and conducting On state (partially or fully unrolled nanoscroll). Based on the analysis of the memory cell energetics, the switching voltage between Off and On states is calculated as a function of the cell dimensions. The lower limit of the switching voltage is estimated to be about 5 V for two electrode cells and 15 V for cells with a third gate electrode. For cell dimensions that result in full nanoscroll unrolling in the On state, a return to the Off state is impossible. These cells are promising for archival memory applications, and the optimal cell dimensions for such applications are determined.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 99-105"},"PeriodicalIF":2.4,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169629","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
Structural and optical properties of α aluminum oxide prepared by sol-gel method 溶胶-凝胶法制备α氧化铝的结构和光学性质
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2024-12-27 DOI: 10.1016/j.cap.2024.12.008
Ftema W. Aldbea , C. Va'zques- Va'zquez , M.A. Abobaker , A.Y. Alsteeni , A. Saad , A. Sharma , Pramod K. Singh , Markus Diantoro , M. May , T. Abdullah , A. Edhirej , S.M. Aldosari , M. Kraini
{"title":"Structural and optical properties of α aluminum oxide prepared by sol-gel method","authors":"Ftema W. Aldbea ,&nbsp;C. Va'zques- Va'zquez ,&nbsp;M.A. Abobaker ,&nbsp;A.Y. Alsteeni ,&nbsp;A. Saad ,&nbsp;A. Sharma ,&nbsp;Pramod K. Singh ,&nbsp;Markus Diantoro ,&nbsp;M. May ,&nbsp;T. Abdullah ,&nbsp;A. Edhirej ,&nbsp;S.M. Aldosari ,&nbsp;M. Kraini","doi":"10.1016/j.cap.2024.12.008","DOIUrl":"10.1016/j.cap.2024.12.008","url":null,"abstract":"<div><div>Aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) powders were prepared <em>via</em> sol-gel method. The samples underwent three-hours of calcination process between 1100 and 1200° C. An X-ray diffraction (XRD) was used to analyze structural properties, field emission scanning electron microscopy (FE-SEM) was employed to assess morphological characteristics, UV–visible (UV/vis) and Raman spectroscopies were used for determining the optical properties. According to the XRD data, the samples display α- Al<sub>2</sub>O<sub>3</sub> type in the hexagonal structure. As the calcination temperature increases, the lattice parameters of both samples remain unchanged, recording values of <em>a</em> = 4.76 ± 0.10 Å and c = 12.98 ± 0.10 Å. The crystalline size increases from 35.0 ± 0.1 to 38.0 ± 0.1 nm as calcination temperature increases from 1100 to 1200 °C, respectively. At 1100 °C the sample shows the presence many pores mixed with needles-like structures; with a further increase in the calcination temperature to 1200 °C, the sample shows large and porous particles. There is no change in the energy gap with increasing calcination temperatures; their values of 3.8 and 4.5 eV are recorded. This could be due to the Al<sub>2</sub>O<sub>3</sub> being stable at high calcination temperature. Raman spectra of both samples showed the active mode A1g located at 415 and 643 cm<sup>−1</sup> and the other Raman active mode of Eg located at 376, 429, 575 and 749 cm<sup>−1</sup>, these results are close to Raman spectra for single crystalline α-Al<sub>2</sub>O<sub>3</sub> but with slight differences in Raman peak positions which could be due to the disorder vibration of active phonon.</div><div>sanalysis are also discussed.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 85-90"},"PeriodicalIF":2.4,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169627","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
Crystallinity-dependent surface oxidation in Cu Films revealed by a visualization of surface plasmon 表面等离激元显示的Cu薄膜中结晶度依赖的表面氧化
IF 2.4 4区 物理与天体物理
Current Applied Physics Pub Date : 2024-12-24 DOI: 10.1016/j.cap.2024.12.010
M.S. Kim , J.S. Kim , B.N. Chae , J.S. Lee
{"title":"Crystallinity-dependent surface oxidation in Cu Films revealed by a visualization of surface plasmon","authors":"M.S. Kim ,&nbsp;J.S. Kim ,&nbsp;B.N. Chae ,&nbsp;J.S. Lee","doi":"10.1016/j.cap.2024.12.010","DOIUrl":"10.1016/j.cap.2024.12.010","url":null,"abstract":"<div><div>We visualized surface plasmon in poly- and single-crystalline Cu films by exploiting nano-infrared imaging. We clearly observed oscillating patterns in both films which are attributed to the surface plasmon launched from the film edge and the atomic force microscope tip. The surface plasmons observed for poly- and single-crystalline Cu films have different oscillating periods for the given wavelength of incident beam, and different slopes of the surface plasmon dispersion. These behaviors could be understood by a corresponding difference in dielectric constants of the dielectric layer on top of the Cu films; a relatively smaller dielectric constant is required to fit the surface plasmon's dispersion relation of the single-crystalline Cu film implying that the oxidized layer formed on the Cu film surface is thinner than for the poly-crystalline film. This result is in good agreement with the previous observation about the robustness of the single-crystalline Cu film against the surface oxidation.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 80-84"},"PeriodicalIF":2.4,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170841","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
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