Diamond and Related Materials最新文献

{"title":"Anti-bunching behavior of photons and strain determination in boron-implanted single-crystal diamond using irradiation induced nitrogen-vacancies","authors":"Vivek K. Shukla ,&nbsp;A. Majumder ,&nbsp;Brajesh S. Yadav ,&nbsp;Sandeep Dalal ,&nbsp;Nanhey Singh ,&nbsp;K. Saha ,&nbsp;Padmnabh Rai","doi":"10.1016/j.diamond.2025.112388","DOIUrl":"10.1016/j.diamond.2025.112388","url":null,"abstract":"<div><div>The work reports on irradiation-induced negatively-charged nitrogen-vacancy (<span><math><msup><mi>NV</mi><mo>−</mo></msup></math></span>) centres generation in single-crystal diamonds through boron ion-implantation (energy 130 keV), followed by subsequent annealing. Ion-implantation generates significant lattice defects, such as vacancies, which bind to substitutional nitrogen atoms to form <span><math><msup><mi>NV</mi><mo>−</mo></msup></math></span> centres during post-irradiation annealing process. The irradiation-induced <span><math><msup><mi>NV</mi><mo>−</mo></msup></math></span> centres were employed to determine the local strain and study the anti-bunching behavior of photons emitted from it. Single photon emission measurements exhibit the anti-bunching behavior of photons due to the presence of two- and three-color centres in the sample irradiated at fluence 1⨯10¹⁴ ions/cm². However, samples irradiated at fluences (5⨯10¹⁴ and 1⨯10¹⁵ ions/cm²) depict the presence of three- and four-color centres. At the same time, irradiation induces strain in the crystal, which affects the energy level of <span><math><msup><mi>NV</mi><mo>−</mo></msup></math></span> centres. The <span><math><msup><mi>NV</mi><mo>−</mo></msup></math></span> spin states have been probed by optically detected magnetic resonance (ODMR), demonstrate the increase of local strain with rise in irradiation fluence. The resulting strain caused by irradiation is dominated by transverse strain compared to axial strain along the <span><math><msup><mi>NV</mi><mo>−</mo></msup></math></span> centre. The ODMR results are consistent with strain estimated from Raman and X-ray diffraction analysis of irradiated diamond samples. Our results open the route for potential applications of irradiation-induced <span><math><msup><mi>NV</mi><mo>−</mo></msup></math></span> centres in stain imaging, sensing, and quantum information processing devices.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112388"},"PeriodicalIF":4.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computational evaluation of B12N12 nanocages as efficient nanocarriers for enhanced drug delivery of Plavix: Insights from structural, electronic, and solvent effects","authors":"Hadil Faris Alotaibi ,&nbsp;Anjan Kumar ,&nbsp;Yashwantsinh Jadeja ,&nbsp;Suhas Ballal ,&nbsp;Shaker Al-Hasnaawei ,&nbsp;Abhayveer Singh ,&nbsp;T. Krithiga ,&nbsp;Subhashree Ray ,&nbsp;Kamal Kant Joshi","doi":"10.1016/j.diamond.2025.112382","DOIUrl":"10.1016/j.diamond.2025.112382","url":null,"abstract":"<div><div>This research examines the adsorption characteristics of the antiplatelet medication Plavix (clopidogrel) onto a boron nitride (B₁₂N₁₂) nanocage, aiming to assess its viability for targeted drug delivery applications. A comprehensive analysis of the B₁₂N₁₂ nanocage's effectiveness as a drug carrier for Plavix has been conducted by evaluating its geometrical and electronic properties, alongside the adsorption energies for various configurations of the Plavix@B₁₂N₁₂ nanohybrid. All quantum chemical computations, including geometry optimization and vibrational frequency assessments, were executed at the DFT/B3LYP/6-311G(d) theoretical level. The adsorption of Plavix onto the B₁₂N₁₂ nanocage occurs through a combination of covalent and hydrogen bonding interactions. The most stable configuration of the Plavix@B₁₂N₁₂ nanohybrid demonstrates an adsorption energy of −8.27 eV in the gas phase and −9.77 eV in the aqueous phase, indicating a strong binding affinity and increased stability in a solvent environment. Investigations into the HOMO-LUMO gap and work function reveal notable electronic interactions. Additionally, ab initio molecular dynamics (AIMD) simulations were performed to validate the thermal stability of the nanohybrid under ambient conditions, with recovery time analyzed as a critical parameter in drug delivery. The findings indicate that the Plavix@B₁₂N₁₂ system is both energetically and structurally stable, positioning it as a promising candidate for targeted drug delivery applications. This study offers essential insights into the design and development of boron nitride-based nanocarriers for therapeutic agents. The article examines approaches to improve the therapeutic benefits of Plavix while minimizing adverse effects, emphasizing the significance of personalized medicine in drug delivery systems to enhance cardiovascular health in patients.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112382"},"PeriodicalIF":4.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon nanomaterials as additives in lubricating oils for tribological applications: A review","authors":"Zan Yu ,&nbsp;Meng Zhou ,&nbsp;Rende Liu ,&nbsp;Yingdong Wang ,&nbsp;Xinya Zhang","doi":"10.1016/j.diamond.2025.112384","DOIUrl":"10.1016/j.diamond.2025.112384","url":null,"abstract":"<div><div>Friction and wear are inevitable in mechanical operation, and the development of advanced lubricants is essential for the pursuit of energy efficiency and sustainable development. Great progress has been made in the application of carbon nanomaterials as lubricant additives, which is of great significance for controlling friction and wear. This review mainly introduces the types of carbon nanomaterials (including zero-dimensional, one-dimensional, and two-dimensional carbon nanomaterials) for lubricants, the lubrication mechanism of nanoadditives (including the formation of tribofilm, ball bearing effect, mending or self-repairing effect, and polishing effect), and discusses the dispersion and film-forming ability of carbon nanomaterials in lubricants. Finally, the drawbacks of current research are discussed from three aspects: high production costs, insufficient dispersion, and unclear mechanism elucidation. Further discussions were held on the solutions for the drawbacks of current research and future research directions (including machine learning and molecular simulation in design of lubricant additives and optimizing carbon nanomaterial additives for electric vehicle lubricants) in the outlook. Therefore, this review will promote a better fundamental understanding of carbon nanomaterials in lubricant applications and help design carbon nanomaterials with excellent tribological properties.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112384"},"PeriodicalIF":4.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bracts derived activated carbon with ZnCo2O4 composite as electrodes for high-performance asymmetric supercapacitors","authors":"M. Gowri ,&nbsp;A. Thirugnanasundar","doi":"10.1016/j.diamond.2025.112349","DOIUrl":"10.1016/j.diamond.2025.112349","url":null,"abstract":"<div><div>This research explores the development of an innovative asymmetric supercapacitor (ASC) featuring activated carbon (AC) derived from banana bracts as the negative electrode and a ZnCo₂O₄/AC nanocomposite as the positive electrode. The honeycomb-like porous structure of the AC enhances its surface area and porosity, facilitating improved ionic mobility. ZnCo₂O₄ is integrated into the AC framework, providing a mesoporous structure that significantly enhances charge storage and electrical conductivity. The ZnCo₂O₄/AC composite exhibits a specific capacitance of 1656 F g⁻¹ at 1 A/g, along with impressive rate capability, maintaining 95.3 % of its capacitance after 10,000 cycles. The ASC device operates at a voltage of 1.5 V, delivering an energy density of 42.2 Wh kg⁻¹ and a power density of 750 W kg⁻¹. These results highlight the potential of ZnCo₂O₄/AC as a high-performance electrode material, combining high capacitance, excellent cycling stability, and superior rate capability for next-generation energy storage applications.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112349"},"PeriodicalIF":4.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of step-flow grown diamond films and directionally oriented NV center ensembles","authors":"Xin Tan ,&nbsp;Jian Wang ,&nbsp;Xiangsheng Li ,&nbsp;Xueyuan Wei ,&nbsp;Qiao Yang ,&nbsp;Zhanqing He ,&nbsp;Hui Qi ,&nbsp;Bochen Zhang ,&nbsp;Dachuan Meng ,&nbsp;Zhengyu Liang ,&nbsp;Shiyang Sun","doi":"10.1016/j.diamond.2025.112387","DOIUrl":"10.1016/j.diamond.2025.112387","url":null,"abstract":"<div><div>The nitrogen-vacancy (NV) color center in diamond, serving as an ideal solid-state sensing structure in quantum sensing, holds significant value. However, due to the random orientation distribution of NV center, it results in low contrast in magnetic detection. This study employed microwave plasma chemical vapor deposition equipment to prepare diamond (111) thin film Substrate with smooth and uniform surfaces, utilizing epitaxial growth principles and hydrofluoric acid separation techniques for improved orientation consistency. Explored the effects of methane concentration and deposition temperature on the step-flow growth of diamond (111) thin film. Introduction of ammonia gas facilitated the directed preparation of NV color center, achieving an alignment rate of 46 % as detected by ODMR. The contrast reached a high of 4.5 %, and magnetic sensitivity, as indicated by the F/C ratio, improved threefold, laying a foundation for future advancements in optical and magnetic sensing fields.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112387"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The structure and thermal conductivity of the diffusion-bonded interface of diamond-copper composite material prepared by spark-plasma sintering based on a molybdenum interlayer","authors":"Dao-chun Hu ,&nbsp;Lei Wang ,&nbsp;Ming-he Chen ,&nbsp;Xiao-qi Jian ,&nbsp;Ning Wang","doi":"10.1016/j.diamond.2025.112383","DOIUrl":"10.1016/j.diamond.2025.112383","url":null,"abstract":"<div><div>An efficient thermal conduction characteristic is significant for electronic packaging materials. The diamond‑copper (Cu) composite material is considered to offer the most potential as a thermal management material, however, the coefficient of thermal conductivity (CTC) of the material is decreased due to the presence of bonded interface defects and the poor wettability, limiting the application of the material. Spark plasma sintering (SPS) diffusion bonding was used to join the diamond-Cu composite material. After adding a molybdenum (Mo) interlayer to the bonded interface, a reliable bonded interface was formed. The CTC of the material increases from 658.1 W/(m·K) to 724.33 W/(m·K), and the coefficient of thermal expansion (CTE) is 6.1 × 10⁻⁶ K⁻¹, which matches well with the semiconductor chip. The reduction of interfacial defects, the enhancement of bonding ability, the elevation of material densities enhance the thermal conductivity of the material, the generation of Mo₂C at the interface enhances the coupling of phonons at the interface, the hybridization of electron orbitals, and thus the enhancement of interfacial thermal conductivity. The research provides theoretical support for modification of the interface of the diamond-Cu composite material.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112383"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic enhancement of electrochemical performance in g-C3N4@SnS2 hetero-structures for advanced supercapacitor applications","authors":"Yusra Anwar ,&nbsp;M.I. Khan ,&nbsp;Ali Mujtaba ,&nbsp;Umer Younas ,&nbsp;Mahvish Fatima ,&nbsp;Dhafer O. Alshahrani ,&nbsp;Mongi Amami","doi":"10.1016/j.diamond.2025.112390","DOIUrl":"10.1016/j.diamond.2025.112390","url":null,"abstract":"<div><div>The urgent demand for efficient and sustainable energy storage systems presents a critical challenge in the development of high-performance electrode materials. This study addresses this gap by synthesizing a novel g-C₃N₄@SnS₂ heterostructure aimed at advancing supercapacitor technology. The engineered composite demonstrated a superior specific capacitance of 787 F/g at 0.8 A/g and a notable energy density of 56.8 Wh/kg, surpassing the performance of its individual components. Electrochemical impedance spectroscopy (EIS) revealed a reduction in charge transfer resistance, indicating enhanced ion transport and improved conductivity within the composite. The promising electrochemical characteristics, coupled with structural integrity and stability, position g-C₃N₄@SnS₂ as a viable candidate for industrial applications in next-generation energy storage devices.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112390"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Glucose derived carbon-coated titanium dioxide (GDCC-TiO2) as an advanced electrode material for supercapacitor applications","authors":"Rahul Kumar","doi":"10.1016/j.diamond.2025.112389","DOIUrl":"10.1016/j.diamond.2025.112389","url":null,"abstract":"<div><div>This study examines the advancement and performance of glucose derived carbon- coated titanium dioxide (GDCC-TiO₂) as an advanced electrode material for supercapacitor applications. GDCC-TiO₂ has been fabricated utilizing titanium dioxide and glucose. During the thermal treatment in an inert atmosphere, glucose molecules coated on the surface of titanium dioxide particles are transforming into carbon. Structural analyses ((X-ray diffraction (XRD), Raman spectroscopy, and transmission electron microscopy (TEM)) verify the presence of carbon coating on TiO₂ particles. The in-situ carbon coating provides a conductive network around the TiO₂, significantly improving its intrinsic low electrical conductivity while maintaining its high pseudocapacitive properties. The carbon layer enhances ion diffusion, prevents particle agglomeration, and offers structural stability, leading to improved cycling performance and charge-discharge rates. Electrochemical testing, including cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS), reveals that the GDCC-TiO₂ demonstrates the properties of the electrode material utilized in supercapacitor. The specific capacitance of GDCC-TiO₂ reaches a significant value 270.7 F/g at lower scan rate 25 mV/s due to enhanced ion penetration into the pores, while good rate capability is measured at higher scan rates. The GDCC-TiO₂ electrode exhibits a high-power density of 1575 Wkg⁻¹ at energy density of 8.7 Whkg⁻¹.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112389"},"PeriodicalIF":4.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143900430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological transformation of impact diamond crystals after interaction with metal melt at high pressure and high temperature","authors":"A.A. Chepurov ,&nbsp;E.I. Zhimulev ,&nbsp;E.O. Barabash ,&nbsp;S.V. Goryainov ,&nbsp;S.A. Gromilov ,&nbsp;V.M. Sonin ,&nbsp;I.A. Gryaznov ,&nbsp;V.P. Afanasiev ,&nbsp;A.I. Chepurov ,&nbsp;A.I. Turkin","doi":"10.1016/j.diamond.2025.112377","DOIUrl":"10.1016/j.diamond.2025.112377","url":null,"abstract":"<div><div>The aim of the present experiment is to study the morphological transformation of impact diamond crystals after interaction with metal melt at high pressure and high temperature (HPHT). As initial samples, near colorless flattened impact diamond crystals from the Popigai astrobleme (Yakutia) were selected. The experiments were performed using a split-sphere multi-anvil high-pressure apparatus at 6 GPa and 1450°С, which correspond to a diamond stability field. It was found that at the HPHT conditions a contact of lonsdaleite-bearing diamond with Ni<img>Fe melt leads to the formation of complex layered textures which are a combination of dissolution of impact diamond and growth of a cubic diamond phase. The textures gradually transform into an aggregate of microcrystals in a subparallel orientation. The obtained results are substantial for the development of abrasive tools at HPHT conditions using impact diamonds.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"155 ","pages":"Article 112377"},"PeriodicalIF":4.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of microstructure and mechanism of vacuum brazed diamond with heavy rare earth Yb-doped NiCr filler alloy","authors":"Tian Jin ,&nbsp;Banglun Wang ,&nbsp;Zhihao Chen ,&nbsp;Minglang Liu ,&nbsp;Yanming He ,&nbsp;Liujie Xu ,&nbsp;Changjin Liu ,&nbsp;Dong Xu","doi":"10.1016/j.diamond.2025.112372","DOIUrl":"10.1016/j.diamond.2025.112372","url":null,"abstract":"<div><div>In this study, a method of brazing connection between diamond and American Iron and Steel Institute 1045 (AISI 1045) using heavy rare earth Yb-doped Ni<img>Cr filler alloy was proposed. Firstly, the effects of different doping amounts of Yb on the organization and properties of Ni<img>Cr filler alloy were investigated. The doping of Yb alters the microstructure of the Ni<img>Cr filler alloy, promoting the transformation of coarse dendrites into fine equiaxed grains. When the doping amount of Yb was 1.0 wt%, the microhardness of the filler alloy was up to 738.63 Hv_0.2. Secondly, the formation of rare earth compounds Ni₇Yb₂ and NiYb₃ can effectively inhibit the chemical corrosion of diamond by the catalytic element Ni in filler alloy. The size and morphology of the carbides were changed, and the fine carbides were conducive to improving the quality of the brazed joints. Especially when the doping amount of Yb was 1.0 wt%, the reaction between the filler alloy and the diamond interface was more intense, the carbide layer was thicker about 4.26 μm. Diamond abrasive grains had the lowest degree of graphitization and the highest hydrostatic strength of 3575.7 MPa. Moreover, the surface morphology of diamond abrasive grains was intact after the friction wear test, and the removal amount of alumina ceramics by grinding was up to 42.7 mg. It is shown that the brazed diamond has excellent mechanical properties and wear resistance.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"156 ","pages":"Article 112372"},"PeriodicalIF":4.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}