AIP AdvancesPub Date : 2024-09-06DOI: 10.1063/5.0223763
J. Kunc, T. Fridrišek, M. Shestopalov, J. Jo, K. Park
{"title":"Graphene–insulator–metal diodes: Enhanced dielectric strength of the Al2O3 barrier","authors":"J. Kunc, T. Fridrišek, M. Shestopalov, J. Jo, K. Park","doi":"10.1063/5.0223763","DOIUrl":"https://doi.org/10.1063/5.0223763","url":null,"abstract":"We studied the transport properties of graphene–insulator–metal tunneling diodes. Two sets of tunneling diodes with Ti–Cu and Cr–Au top contacts are fabricated. Transport measurements showed state-of-the-art non-linearity and a critical influence of the top metals on the dielectric strength of the tunneling barrier. X-ray photoelectron spectroscopy indicated two methods for enhancing the dielectric strength of the tunneling barrier. These are the optimized seed layers for the growth of high-quality conformal insulators and the selection of appropriate top metal layers with a small diffusion coefficient and electromigration into the Al2O3 barrier. The Cr–Au top contact provides superior characteristics to the Ti–Cu metallization. X-ray photoelectron spectroscopy showed significant diffusion of titanium during the Al2O3 growth and the formation of titanium inclusions after annealing. Chromium diffusion is slower than that of titanium, making chromium contact more suitable for the reliable operation of tunneling diodes. As a result, we demonstrate a 40% improvement in the dielectric strength of the tunneling barrier compared to state-of-the-art metal–insulator–metal diodes.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"61 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185400","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}
AIP AdvancesPub Date : 2024-09-06DOI: 10.1063/5.0225476
Pengfei Yan, Guanqi Li, Zhihao Li, Yafei Zhao, Liang He
{"title":"Unfolding band structure and topological property of 3d transition metal doped monolayer CrTe2: A first-principle calculation","authors":"Pengfei Yan, Guanqi Li, Zhihao Li, Yafei Zhao, Liang He","doi":"10.1063/5.0225476","DOIUrl":"https://doi.org/10.1063/5.0225476","url":null,"abstract":"Owing to their distinctive novel properties, topological metals hold significant promise for application in spintronics, quantum computing, and superconductivity. Using first-principle calculations, we have elucidated the unfolding band structure of 3d transition metal (3d-TM)-doped CrTe2. Notably, our investigation has revealed band crossings in Cu-doped CrTe2, forming a nodal ring near the Fermi level. Through analyzing Wannier charge centers, we have established the topological nontriviality of CrTe2 upon Cu doping. This study demonstrates a fresh platform for exploring their inherent topological properties and introduces a novel perspective on tectonic topological metals.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"1 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185410","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}
AIP AdvancesPub Date : 2024-09-06DOI: 10.1063/5.0222205
Weigao Wang, Yiyang Li, Yili Wan, Yu Duan, Hua An, Zhengchun Peng
{"title":"An upconversion device based on high-performance dual-layer white organic electroluminescent devices","authors":"Weigao Wang, Yiyang Li, Yili Wan, Yu Duan, Hua An, Zhengchun Peng","doi":"10.1063/5.0222205","DOIUrl":"https://doi.org/10.1063/5.0222205","url":null,"abstract":"Large-area imaging techniques in the short-wave infrared spectral region remain a pressing need. Organic light-emitting diodes and infrared photodetectors can be combined to form a near-infrared (NIR) to visible upconversion device, which has great potential to replace traditional infrared imaging systems. The integration of a white organic light-emitting diode (WOLED) with infrared photodetectors has become essential to realize full-color displays for its simple preparation process and high compatibility. This work has designed and optimized a WOLED to achieve stable emission with high brightness (19 470 cd m−2) and high external quantum efficiency (EQE = 18.08%) at a wide voltage range, thereby reducing chromaticity drift caused by voltage fluctuations. Moreover, photon-generated holes in the NIR-sensitive photodetector are able to inject into the WOLED for visible light emission. Consequently, we have obtained a high-performance upconversion device with a luminance on-off ratio exceeding 5 × 103 at 850 nm NIR and a high color stability over a wide range of operating voltage. Our efforts have accomplished a high-performance upconversion device from NIR to white visible light, laying the groundwork for a preliminary exploration of full-color displays.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"50 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185409","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}
AIP AdvancesPub Date : 2024-09-06DOI: 10.1063/5.0219230
Yuyang Wang, Mingyu Duan, Yuan-Liu Chen
{"title":"Improved sensitivity for subsurface imaging by contact resonance atomic force microscopy using Fano peaks","authors":"Yuyang Wang, Mingyu Duan, Yuan-Liu Chen","doi":"10.1063/5.0219230","DOIUrl":"https://doi.org/10.1063/5.0219230","url":null,"abstract":"Subsurface detection using contact resonance atomic force microscopy (CR-AFM) has been well-documented and proven capable of nondestructively detecting subsurface defects at depths of hundreds of nanometers. In CR-AFM, the frequency of the contact resonance mode is often used as the actuating frequency of the probe. However, as many frequencies are available in the probe’s vibrational spectrum, each with a significant impact on the final measurement result, a focused study on frequency selection is necessary. This paper investigates contact resonance peaks through theoretical modeling and experimental verification. The peaks were categorized into two types based on their symmetry. Comparative studies were conducted on the traditionally used symmetric resonance peaks and the less-studied asymmetric resonance peaks. The results reveal the detection capability for subsurface measurements due to different peak selections, identifying the peak types most suitable for these measurements. This study demonstrates that using Fano peaks in CR-AFM can enhance subsurface imaging resolution and reduce surface damage, making it a valuable technique for detailed nanoscale analysis.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"12 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185411","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}
AIP AdvancesPub Date : 2024-09-06DOI: 10.1063/5.0212544
Shashwath Patil, T. Sathish, Jayant Giri, Bassem F. Felemban
{"title":"An experimental study of the impact of various infill parameters on the compressive strength of 3D printed PETG/CF","authors":"Shashwath Patil, T. Sathish, Jayant Giri, Bassem F. Felemban","doi":"10.1063/5.0212544","DOIUrl":"https://doi.org/10.1063/5.0212544","url":null,"abstract":"This study examines the effect of different infill patterns and percentages on the compressive strength attributes of carbon fiber-reinforced PETG samples printed using fused deposition modeling, employing response surface methodology. Carbon fiber-enhanced PETG (polyethylene terephthalate glycol) composites represent a cutting-edge advancement in additive manufacturing, drawing significant interest due to their impressive mechanical attributes. The experimentation involves modifying printing parameters such as the infill pattern (tri-hexagon, cubic, or line) and infill density (40%, 60%, and 80%). These parameter values were obtained through a central composite experimental design utilizing response surface methodology. The compressive strength of the 3D-printed carbon fiber-reinforced PETG specimens is assessed following ASTM D695 standards. Research indicates that increasing the density of the infill results in enhanced compressive strength. Specifically, specimens featuring an 80% infill density with a tri-hexagon pattern demonstrate a notable compressive strength of 39.16 MPa. By employing regression analysis and optimization techniques, the study predicts experimental outcomes accurately. These findings offer valuable insights into refining the manufacturing process of carbon fiber-reinforced PETG components. This advancement holds potential benefits across various engineering fields, particularly in automotive and aerospace industries, where strength and durability are essential.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"35 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185412","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}
AIP AdvancesPub Date : 2024-09-06DOI: 10.1063/5.0227267
Muthuselvan Balasubramanian, R. Saravanan, T. Sathish, Jayant Giri, Rustem Zairov, S. M. Mozammil Hasnain, Rakhymzhan Turmanov
{"title":"Opportunities and challenges of bamboo fiber composites in additive manufacturing: A comprehensive review","authors":"Muthuselvan Balasubramanian, R. Saravanan, T. Sathish, Jayant Giri, Rustem Zairov, S. M. Mozammil Hasnain, Rakhymzhan Turmanov","doi":"10.1063/5.0227267","DOIUrl":"https://doi.org/10.1063/5.0227267","url":null,"abstract":"This study explores the transformative impact of three-dimensional printing, or additive manufacturing, in the development of bamboo-based 3D printing parts. Recently, there has been growing interest in incorporating natural fibers, such as bamboo, into polymers to enhance the structural integrity and strength of 3D-printed polymeric materials. This paper thoroughly examines the opportunities and obstacles associated with using additive manufacturing techniques to print bamboo fiber composites. This study includes an analysis of the mechanical properties, thermal properties, biodegradability, and environmental benefits of bamboo fiber composites. It also covers the processing methods and the printing parameters of bamboo fiber composites. This paper review focuses on the future prospects of bamboo fiber composites as a sustainable material in additive manufacturing based on the analysis of the existing literature and the recent research developments.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"56 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185413","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}
AIP AdvancesPub Date : 2024-09-06DOI: 10.1063/5.0225140
Zhenhui Wu, Zhaoyao Pan, Jinpeng Yang
{"title":"Comprehensive device modeling and performance analysis of (Cs, FA)Pb(I, Br)3 based perovskite–silicon tandem solar cells","authors":"Zhenhui Wu, Zhaoyao Pan, Jinpeng Yang","doi":"10.1063/5.0225140","DOIUrl":"https://doi.org/10.1063/5.0225140","url":null,"abstract":"The utilization of perovskite films as the top subcell to form a perovskite–silicon tandem solar cell has emerged as an attractive approach to achieve higher power conversion efficiency (PCE) that could surpass the Shockley–Queisser limit for single silicon junction. Despite these efforts, precisely understanding and predicting the underlying mechanism necessary for obtaining higher PCE remains a challenging task. In particular, the absorption due to back electrode reflection during calculations has often been neglected, resulting in an underestimation when comparing theoretical calculations to experimental conditions. In this study, we conduct a comprehensive investigation of perovskite–silicon tandem solar cells with considering the back electrode reflection to study the detailed influence on film quality of perovskite films, where a detailed analysis of multiple factors such as bulk and interface defects, doping levels, and carrier mobility from (Cs, FA)Pb(I, Br)3 has been conducted to unveil their effects on device performance. Our results revealed that lower bulk/interface defect concentrations and higher carrier mobility are critical factors contributing to the best device performance, where the highest PCE would reach up to 37.40%. Further comparison with experimental results also confirms the importance of employing effective methods to reduce surface/interface trap densities in order to enhance overall performance. These findings offer valuable theoretical insights for the guidance of experimental designs of perovskite–silicon tandem solar cells.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"18 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224437","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}
AIP AdvancesPub Date : 2024-09-05DOI: 10.1063/5.0212542
Maliheh Shaban Tameh, Wayne L. Gladfelter, Jason D. Goodpaster
{"title":"Efficient method for twist-averaged coupled cluster calculation of gap energy: Bulk study of stannic oxide","authors":"Maliheh Shaban Tameh, Wayne L. Gladfelter, Jason D. Goodpaster","doi":"10.1063/5.0212542","DOIUrl":"https://doi.org/10.1063/5.0212542","url":null,"abstract":"We study the gap energy of the semiconducting oxide SnO2 through ab initio calculations including both density functional theory (DFT) and coupled cluster methods. The effectiveness of twist averaging in reducing finite-size errors is evaluated across different functionals. We report an overestimation of gap energy when applying finite-size scaling to reach the thermodynamic limit in equation-of-motion (EOM) CCSD calculations. To mitigate one-body and many-body errors, we integrate twist averaging with a post-processing correction mechanism that compares finite-size and infinite-size DFT calculations using hybrid functionals. While inspired by the Kwee, Zhang, and Krakauer approach, our method is specifically tailored to hybrid functionals for a more accurate treatment of exchange-correlation effects. Our approach ensures that the many-body interactions are accurately captured in the estimated gap for an infinite system. We introduce unique single twist angles that provide cost-effective and accurate energies compared to to full twist averaging in EOM-CCSD calculations. Applying this approach to SnO2, we calculate a fundamental gap of 3.46 eV, which closely matches the 3.59 eV gap obtained from two-photon spectroscopy experiments, demonstrating the accuracy of this method.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"8 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224286","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}
AIP AdvancesPub Date : 2024-09-05DOI: 10.1063/5.0203081
Sreenivasa R., Ramesh B. T., Jayant Giri, Mohammad Khalid Al-Sadoon, Arun Kumar Bongale, T. Sathish, Ashok R. Banagar
{"title":"Optimizing process parameters to minimize wear-induced material loss in bronze-based hybrid metal matrix composites using the Taguchi method","authors":"Sreenivasa R., Ramesh B. T., Jayant Giri, Mohammad Khalid Al-Sadoon, Arun Kumar Bongale, T. Sathish, Ashok R. Banagar","doi":"10.1063/5.0203081","DOIUrl":"https://doi.org/10.1063/5.0203081","url":null,"abstract":"Metal matrix composites have captured considerable interest in tribological applications, largely owing to their remarkable characteristics, which include a high strength-to-weight ratio and a low wear rate. This investigation delves into the exploration of hybrid metal matrix composites, where cobalt and chromium play the role of reinforcing agents within a bronze foundation. These composites were manufactured through a powder metallurgy process, utilizing cobalt and chromium metal powders with a particle size of 40 μm. Various weight percentage ratios (2.5%, 5.0%, and 7.5%) were utilized to create these composite specimens. To assess their tribological performance, the composite samples were subjected to a sliding wear test using a pin on disk machine, following the ASTM G99 standards. The wear characteristics of these composites were analyzed using the Taguchi method, considering parameters such as the applied load, speed, reinforcement percentage, and sliding distance. In addition, we conducted an analysis of variance on the collected data. To analyze the wear behavior of these hybrid metal matrix composites based on bronze, we utilized both multiple linear regression analysis and a signal-to-noise ratio assessment. The results indicate that the inclusion of cobalt and chromium metal powders as reinforcement materials enhances the tribological properties of the bronze matrix material.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"4 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185416","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}
AIP AdvancesPub Date : 2024-09-05DOI: 10.1063/5.0210800
Vincent Bos, Jasper Wesselingh, Gerard J. Verbiest, Peter G. Steeneken
{"title":"Active damping for acoustic levitation in air","authors":"Vincent Bos, Jasper Wesselingh, Gerard J. Verbiest, Peter G. Steeneken","doi":"10.1063/5.0210800","DOIUrl":"https://doi.org/10.1063/5.0210800","url":null,"abstract":"Acoustic levitation is an attractive and versatile technique that offers several advantages in terms of particle size, range, reconfigurability, and ease of use with respect to alternative levitating techniques. In this paper, we study the use of active damping to improve the response time and positioning precision of an acoustic levitator operating in air. We use a laser Doppler vibrometer to measure the velocity of a levitated particle. Using this information, a control algorithm is designed and implemented to provide active damping. By system identification and modeling, we demonstrate that the active damper mechanism is well-predictable by models and can be electronically reconfigured and controlled.","PeriodicalId":7619,"journal":{"name":"AIP Advances","volume":"310 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224288","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}