Article
Chemistry, Physical
R. J. Jimenez-Rioboo, N. Gordillo, A. de Andres, A. Redondo-Cubero, M. Moratalla, M. A. Ramos, M. D. Ynsa
Summary: Diamond properties can be controlled by doping and ion-beam irradiation, which can also cause damage and other aftereffects. Boron doping is of particular interest as it can turn diamond into a p-type semiconductor at suitable concentrations and a superconductor at higher concentrations. However, the creation of superconducting boron-doped diamond is hindered by amorphization and graphitization after annealing. This study analyzed the damage and recovery of diamond irradiated with 9 MeV B ions at different fluences, using various techniques. The results showed that higher fluences led to carbon migration and increased amorphous fraction, while low fluences could fully recover the diamond structure without graphitization. However, annealing at 1200 degrees C for high fluences caused incomplete healing and the presence of graphite traces.
Article
Optics
Abrar Islam, Firoz Haider, Rifat Ahmmed Aoni, Rajib Ahmed
Summary: A photonic crystal fiber-based surface plasmon resonance sensor for rapid detection and quantification of novel coronavirus has been successfully developed and investigated numerically. The proposed sensor demonstrates viable detections of different components of the virus and shows promising sensitivity and resolution for viral RNA detection. The compact photonic sensor is well-suited for rapid point-of-care COVID testing.
Article
Physics, Applied
Shu-Dong Xing, Hao-Yang Yin, Tong Wang, Liao-Lin Zhang, Qing-Yang Yue, Li-Li Fu, Xue-Wen Long, Rui-Lin Zheng, Chun-Xiao Liu
Summary: A one-dimensional waveguide is formed in oxyfluoride glass by helium ion implantation. The experimental results indicate that the waveguide has potential for integrated photonic devices.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2022)
Article
Materials Science, Multidisciplinary
Arslan Asim, Michael Cada, Alan Fine, Yuan Ma, Farheen Ibraheem
Summary: This paper proposes an optical sensor based on nanoscale metamaterial structures and explores its design and applications through numerical modeling and analysis. The sensor detects changes in refractive index by using electromagnetic waves to strike the structure and observing the spectral response. It displays sharp resonance peaks in the reflected beam and has a linear response and a large Quality (Q) factor.
Article
Chemistry, Physical
Junpu Wang, Yuzhu Su, Yi Tian, Xiaojun Xiang, Jiawei Zhang, Shuaiqi Li, Duanwei He
Summary: The study presents a method for growing porous diamonds using high-pressure and high-temperature techniques, where crystal growth is driven by minimizing surface energy through attaching small crystals to a large seed crystal surface in a metal solvent. This approach enables industrial-scale production of single-crystal porous diamonds.
Article
Materials Science, Multidisciplinary
Guo Chen, Zilong Zhang, Yasuo Koide, Satoshi Koizumi, Zhaohui Huang, Meiyong Liao
Summary: Single-crystal diamond is an ideal semiconductor material for high-performance and high-reliability MEMS devices due to its excellent mechanical and physical properties. In this study, it was found that the quality factors (Q values) of SCD cantilevers were significantly improved by almost twice after annealing at 1100 degrees C, as the annealing process can eliminate the damage induced by ion implantation. Therefore, high-temperature annealing is an effective method to improve the Q factors of SCD MEMS cantilevers. This work also demonstrates that MEMS can be a more sensitive tool for characterizing the crystalline quality of diamond compared with conventional structural methods.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Ceramics
Juping Tu, Yong Wang, Jian He, Jinlong Liu, Baorui Jia, Liangxian Chen, Junjun Wei, Chengming Li
Summary: A method of C+ ion implantation was used to modify single crystal diamond, resulting in a surface amorphous layer that improved the oxygen evolution reaction (OER) activity by increasing the number of active sites and the content of C=O groups.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Yong Wei, Chunbiao Liu, Chunlan Liu, Lingling Li, Lei Hu, Yonghui Zhang, Xiaoling Zhao, Tianci Jiang, Rui Wang, Chen Shi
Summary: In this paper, a single-mode fiber curvature sensor based on surface plasmon resonance (SPR) is designed and fabricated. By bending the fiber, the curvature measurement is achieved by changing the incident angle and depth of the resonance valley. Experimental results show that a smaller cutoff wavelength leads to higher sensitivity in valley depth and narrower half height width (FWHM).
Article
Multidisciplinary Sciences
Zaky A. Zaky, Arafa H. Aly
Summary: In this study, the optical Tamm state was excited for the first time using a gyroidal graphene/porous silicon one-dimensional photonic crystal, leading to an optimized sensor with higher sensitivity and figure of merit compared to previous structures. The observation of resonant dips in the reflectance spectra provides strong evidence for the existence of Tamm plasmon-polaritons with significantly improved performance.
SCIENTIFIC REPORTS
(2021)
Article
Quantum Science & Technology
Elena Nieto Hernandez, Elisa Redolfi, Claudia Stella, Greta Andrini, Emilio Corte, Selene Sachero, Sviatoslav Ditalia Tchernij, Fabio Picariello, Tobias Herzig, Yuri M. M. Borzdov, Igor N. N. Kupriyanov, Alexander Kubanek, Paolo Olivero, Jan Meijer, Paolo Traina, Yuri N. N. Palyanov, Jacopo Forneris
Summary: The authors characterize the germanium-vacancy (GeV) centers in diamond at the single-defect level, produced by Ge-ion implantation and subsequent annealing processes, focusing on the effect of high-pressure-high-temperature (HPHT) processing on their quantum-optical properties. Different post-implantation annealing conditions are explored to identify the optimal conditions for creating GeV centers with optimal quantum-optical emission properties. The results show that HPHT-treated samples exhibit up to eight times higher emission efficiency compared to conventional vacuum annealing, suggesting a suitable pathway for the fabrication of bright GeV centers for single-photon generation.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Optics
Zihang Xiang, Chupeng Lu, Shengjia Wang, Zeju Rui, Fei Zeng, Yifei Wang, Cuiting Sun, Xiren Jin, Song Li, Tao Geng
Summary: This paper presents a novel refractive index (RI) sensor based on a D-shaped single-mode-graded-index multimode-single-mode fiber (D-SGIMS) structure, which is investigated in detail. A CO2 laser was used to create the SGIMS structure, generating a strong evanescent field. Structural parameters were determined through simulations and experimental results confirmed the theoretical analysis. By comparing transmission spectra and RI sensitivity of sensors with different lengths, it was found that the maximum RI sensitivity was 811.00 nm/RIU in the range of 1.333-1.419. Thus, the proposed D-SGIMS structure offers high-precision measurement capabilities for applications in the field of biochemistry.
APPLIED PHYSICS B-LASERS AND OPTICS
(2023)
Article
Optics
Di Wu, Manli Wei, Sitong Liu, Runhua Li, Ji Ma
Summary: A high-performance Bloch surface wave biosensor was constructed for the detection of hemoglobin by optimizing the buffer layer parameters. The optimized biosensor showed high quality factor and figure of merit, making it promising for future hemoglobin detection.
Article
Optics
Yujian Li, Yifan Liu, Weihao Yuan, Changyuan Yu
Summary: An ultrasensitive optical fiber sensor based on the optical Vernier effect is proposed for the simultaneous measurement of axial strain and temperature. The sensor structure consists of two cascaded Mach-Zehnder interferometers (MZIs) with different free space ranges. The sensitivities of the sensor are significantly amplified by approximately 30 times when the two MZIs are cascaded in series due to the optical Vernier effect. The experimental results demonstrate that the cascaded structure exhibits high sensitivities for axial strain (approximately 17 pm/με) and temperature (approximately 1.16 nm/℃) within their respective measurement ranges, while simultaneously measuring both parameters within acceptable error ranges.
Article
Chemistry, Physical
Wei Huang, Xinyue Xiang, Luyue Jin, Yi He
Summary: In this study, dark-field microscopy was used to investigate the kinetics of single Cu2O microparticles for NO2 removal. Unexpectedly, an oscillating redox reaction between Cu2O microparticles and NO2 was observed. This finding provides a new avenue for studying structure-performance relationships.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Optics
J. I. A. B. I. N. Wang, A. N. Z. H. Wang, X. I. N. G. Y. U. Yang, S. H. E. N. G. J. I. A. Wang, X. I. N. Z. H. E. Zeng, J. I. A. Y. U. Hao, J. I. A. N. Zhou, Y. A. N. R. U. Kou, C. H. O. N. G. Niu, T. A. O. Geng, W. E. I. M. I. N. Sun
Summary: This paper proposes a new design framework of long-period fiber grating (LPFG) sensors resistant to multi-parameter cross talk. By merging a section of hollow quartz capillary (HQC) with a single-mode fiber (SMF) periodically, the proposed device is able to resist cross talk among the strain, ambient refractive index, and vector bending. The novel Es-LPFG is promising in single-parameter sensing, mode-locked lasers, and frequency-locked gain flattening.
Article
Physics, Applied
A. N. Giakoumaki, G. Coccia, V. Bharadwaj, J. P. Hadden, A. J. Bennett, B. Sotillo, R. Yoshizaki, P. Olivero, O. Jedrkiewicz, R. Ramponi, S. M. Pietralunga, M. Bollani, A. Bifone, P. E. Barclay, A. Kubanek, S. M. Eaton
Summary: Integrated photonic circuits with the ability to confine and manipulate light show promise for applications in quantum information and sensing technologies. The negatively charged nitrogen vacancy (NV-) diamond color center is a leading candidate as a spin-active quantum emitter, with the capability of optically reading its ground spin state and long coherence times at room temperature. The use of femtosecond laser writing allows for the fabrication of optical waveguides and NV complexes. This Perspective reviews the physical mechanisms of laser fabrication in diamond, analyzes the properties of waveguides, single- and ensemble-NV centers, and discusses the potential for their integration into photonic devices for quantum information and sensing.
APPLIED PHYSICS LETTERS
(2022)
Article
Instruments & Instrumentation
L. Anderlini, M. Bellini, C. Corsi, S. Lagomarsino, C. Lucarelli, G. Passaleva, S. Sciortino, M. Veltri
Summary: This article presents a tracking detector for future hadronic machines that can withstand extreme levels of radiation while providing high space and time resolutions. The prototype 3D pixel diamond detector, fabricated in Firenze, achieves a time resolution below 100 ps with an efficiency greater than 99% according to test beam results.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Keida Kanxheri, Cinzia Talamonti, Silvio Sciortino, Stefano Lagomarsino, Maria Ionica, Mirco Caprai, Francesco Moscatelli, Leonello Servoli
Summary: By using a 3D manufacturing technique to create diamond detectors with different pixel sizes, this study investigates the impact of pixel size on various dosimetry measurements in radiotherapy. The results show that pixel size does not affect the linearity of response with dose rate and the reproducibility of response, but it is of fundamental importance in the measurement of beam profiles.
PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS
(2022)
Article
Chemistry, Analytical
Lucio Anderlini, Marco Bellini, Vladimir Cindro, Chiara Corsi, Keida Kanxheri, Stefano Lagomarsino, Chiara Lucarelli, Arianna Morozzi, Giovanni Passaleva, Daniele Passeri, Silvio Sciortino, Leonello Servoli, Michele Veltri
Summary: This study investigates the radiation tolerance and timing properties of 3D diamond detectors fabricated by laser engineering on synthetic Chemical Vapor Deposited (CVD) plates. The results demonstrate that the radiation tolerance increases significantly when moving from standard planar architecture to 3D architecture, and this increase is further enhanced with higher density of columnar electrodes. Additionally, the maximum applicable bias voltage also increases significantly after high fluence irradiation, potentially due to the passivation of defects. Experimental analysis allows for predicting device performance at higher fluence levels.
Article
Nanoscience & Nanotechnology
Emilio Corte, Greta Andrini, Elena Nieto Hernandez, Vanna Pugliese, Angelo Costa, Goele Magchiels, Janni Moens, Shandirai Malven Tunhuma, Renan Villarreal, Lino M. C. Pereira, Andre Vantomme, Joao Guilherme Correia, Ettore Bernardi, Paolo Traina, Ivo Pietro Degiovanni, Ekaterina Moreva, Marco Genovese, Sviatoslav Ditalia Tchernij, Paolo Olivero, Ulrich Wahl, Jacopo Forneris
Summary: We conducted the first comprehensive characterization of the structural and photoluminescence properties of optically active centers formed through implantation of Mg+ ions in synthetic diamond. Using electron emission channeling technique, we analyzed the structural configurations of Mg-related defects and observed a major fraction of Mg atoms (around 30% to 42%) in sites consistent with the split-vacancy structure of the MgV complex. Photoluminescence emission studies revealed new spectral features and provided insights into the optimal conditions for stable and intense emission. Our findings have significant implications for quantum information processing applications utilizing the tunable properties of the MgV center.
Article
Archaeology
Oleh Yatsuk, Astrik Gorghinian, Giacomo Fiocco, Patrizia Davit, Serena Francone, Alessandra Serges, Leonie Koch, Alessandro Re, Alessandro Lo Giudice, Marco Ferretti, Marco Malagodi, Cristiano Iaia, Monica Gulmini
Summary: This article examines glass objects found in burial sites in Central Italy during the first millennium BCE, with a focus on blue glass beads. Through various analytical methods, researchers were able to determine the raw materials and manufacturing techniques used, as well as trace possible sources of the beads. These preliminary results contribute to our understanding of exchange routes during the Iron Age in the Mediterranean.
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2023)
Article
Instruments & Instrumentation
N. Gelli, L. Giuntini, F. Cantini, O. Sans-Planell, M. Magalini, M. Manetti, L. Sodi, M. Massi, L. Castelli, C. Czelusniak, F. Taccetti, T. E. Bella, G. Marcucci, M. Clemenza, D. Di Martino, M. Morigi, M. Bettuzzi, L. Vigorelli, A. Re, A. Lo Giudice, D. Alloni, M. Prata, S. Altieri, A. Salvini, F. Grazzi
Summary: This paper presents NICHE (Neutron Imaging for Cultural HEritage), the new neutron imaging facility of the Italian National Institute of Nuclear Physics (INFN). The main features of the beamline, the specifications of the detection set-up, and the performances of the imaging system are reported. NICHE is installed at the TRIGA reactor of LENA (Laboratorio Energia Nucleare Applicata) Pavia University laboratory (Italy). It is the first Italian neutron imaging station open to national external users and allows for morphological characterization of samples.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Physics, Multidisciplinary
Laura Guidorzi, Alessandro Re, Marta Magalini, Debora Angelici, Alessandro Borghi, Gloria Vaggelli, Fulvio Fantino, Valentino Rigato, Leonardo La Torre, Quentin Lemasson, Claire Pacheco, Laurent Pichon, Brice Moignard, Alessandro Lo Giudice
Summary: The analysis of lapis lazuli from different sources has led to the development of a protocol for provenance determination. This protocol, based on non-invasive techniques (IBA), can also be used for precious ancient artefacts. This study has identified Myanmar as a new source of lapis lazuli and proposed new markers for distinguishing it from other sources.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Humanities, Multidisciplinary
Leila Es Sebar, Luca Lombardo, Paola Buscaglia, Tiziana Cavaleri, Alessandro Lo Giudice, Alessandro Re, Matilde Borla, Sara Aicardi, Sabrina Grassini
Summary: Digitalization techniques like photogrammetry (PG) and multispectral imaging (MSI) are being used in the cultural heritage field to create three-dimensional virtual replicas of historical artifacts and study the materials present on their surface. However, these techniques are often used separately. This paper presents a novel research methodology that combines the outcomes of PG and MSI in a single coordinate system, using an affordable tunable set-up and open-source software. The approach has been applied to study wooden artifacts from the Museo Egizio di Torino, providing valuable information for suitable conservation treatments.
Article
Instruments & Instrumentation
Laura Guidorzi, Alessandro Re, Marta Magalini, Alessandro Lo Giudice
Summary: The study applied Principal Component Analysis (PCA) to analyze the provenance of lapis lazuli rocks. The results confirmed the role of trace element contents as provenance markers. PCA also strengthened the use of weaker markers and allowed for differentiation among different quarries. This study provides valuable insights for the analysis of large datasets and the study of provenance in mineralogy.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2023)
Article
Chemistry, Multidisciplinary
Anna Mazzinghi, Lisa Castelli, Francesca Giambi, Chiara Ruberto, Leandro Sottili, Francesco Taccetti, Lorenzo Giuntini
Summary: The Madonna with Child by Andrea Mantegna, owned by the Museo Poldi Pezzoli in Milan, is a canvas painting created using an unusual distemper technique. The use of the MA-XRF spectrometer revealed that the restoration work by Giuseppe Molteni completely covered the original layer, including the mantle of the Virgin, and made significant changes to the painting's appearance. The results also provided guidance for conservation works and led to the decision to remove the varnish and Molteni's version to reveal the original Mantegna.
APPLIED SCIENCES-BASEL
(2023)
Article
Multidisciplinary Sciences
F. Taccetti, L. Castelli, M. Chiari, C. Czelusniak, S. Falciano, M. Fedi, F. Giambi, P. A. Mando, M. Manetti, M. Massi, A. Mazzinghi, C. Ruberto, P. Ronzino, I. Bini, S. Frati, F. Benetti, M. Cestelli Guidi, M. Ciatti, C. Frosinini, S. Rossi, S. Mathot, G. Anelli, G. Cipolla, A. Grudiev, A. Lombardi, E. Milne, E. Montesinos, H. Pommerenke, K. Scibor, M. Vretenar, L. Giuntini
Summary: To address logistical, economic, and safety issues, Italian National Institute of Nuclear Physics, CERN, and Opificio delle Pietre Dure have developed a portable accelerator called MACHINA for in-situ non-destructive analysis of cultural heritage. Despite the slowdown caused by COVID-19 in 2020 and 2021, they continued to develop the control electronics/software and built the second-generation supporting structure. In early 2022, they successfully tested the system and obtained the first extracted 2-MeV proton beam.
RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI
(2023)
Article
Multidisciplinary Sciences
F. Taccetti, L. Castelli, C. Czelusniak, F. Giambi, M. Manetti, M. Massi, A. Mazzinghi, C. Ruberto, F. Arneodo, R. Torres, F. Castella, L. Gheco, N. Mastrangelo, D. Gallegos, A. Morales, M. Tascon, F. Marte, L. Giuntini
Summary: INFN-CHNet is a cultural heritage network established by the Italian National Institute of Nuclear Physics, with units from Italy and outside Europe, including the Universidad Nacional de San Martin in Buenos Aires, Argentina. The network's laboratory at CEPyA-UNSAM is a multidisciplinary facility focusing on scientific and humanistic research. This manuscript presents the X-ray fluorescence scanner as the first instrument developed in this laboratory, its main features, and its applications in the field of cultural heritage including the study of hidden rock art, archaeological pottery, and ancient photography. The primary outcome of this initiative is the conception of a future network of scientific laboratories in South America.
RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI
(2023)
Proceedings Paper
Computer Science, Theory & Methods
Giulia Petrini, Giulia Tomagra, Ettore Bernardi, Ekaterina Moreva, Paolo Traina, Andrea Marcantoni, Federico Picollo, Paolo Olivero, Klaudia Kvakova, Petr Cigler, Ivo Pietro Degiovanni, Valentina Carabelli, Marco Genovese
Summary: The growing interest in quantum sensors, particularly nitrogen-vacancy (NV) centers in artificial diamond, has led to the study and improvement of sensors capable of detecting physical quantities of biological interest. These sensors, synthesized at the nanometer scale, can be inserted into cells and targeted to specific organelles. Despite their current sensitivity limitations, the detection of temperature variations at the cellular level is a promising application. The experiment presented demonstrates the measurement of local temperature variation in neuronal cell cultures using optically detected magnetic resonance with engineered NV centers in nanodiamonds.
PROCEEDINGS OF 2022 IEEE INTERNATIONAL WORKSHOP ON METROLOGY FOR INDUSTRY 4.0 & IOT (IEEE METROIND4.0&IOT)
(2022)
Article
Materials Science, Multidisciplinary
Shuanghui Zeng, Xue Wang, Yunqian Zhang, Jiaojing Shao, Zhao Ding, Jie Zhao
Summary: A free-standing 3D core/shell composite material CNTs@Co9S8 on nickel mesh has been prepared using a simple two-step method. The composite material exhibits excellent conductivity and charge storage capability, making it a promising candidate for supercapacitor applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Marieta Belcheva, Georgi Georgiev, Boyko Tsyntsarski, Urszula Szeluga, Lyudmila Kabaivanova
Summary: This study successfully prepared new antibacterial materials by combining activated carbon with metal nanoparticles, taking advantage of the well-known antibacterial activity of metal nanoparticles. The obtained composites exhibited strong antibacterial effects against E. coli and S. aureus, with the antibacterial activity depending on the contact time, bacterial species, nature of the metal, and metal concentration. The findings provide novel materials with antibacterial properties for further development and potential application in hygiene devices.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
V. P. Madhurima, Kusum Kumari, P. K. Jain
Summary: In this study, carbon nanomaterials were synthesized using the arc discharge technique, with a focus on optimizing process parameters to improve yield and quality. The materials were characterized using various analytical tools, and their dye adsorption capabilities were evaluated. The results showed that carbon soot had better adsorption performance compared to carbon nanotubes, indicating the potential of these carbon nanomaterials for environmental remediation applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaolong Sun, Bo Cui, Pingping Liang, Qimeng Liu, Nan Gao, Hongdong Li
Summary: This study explores the potential of hafnium (Hf) terminated diamond surfaces in achieving negative electron affinity (NEA). By using swarm-intelligence structural search and first-principles calculations, the researchers found that Hf-terminated diamond surfaces exhibit stable NEA properties and high thermal stability, making them promising candidate materials for electron emission applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
N. Soltani, N. Tavakkoli, E. Eslami, L. S. Mirmohammadi
Summary: In this project, a carbon paste electrode modified with graphene and ZnFe2O4 spinel nanoparticles (Gr/ZnFe2O4/CPE) was used to measure naproxen, and various electrochemical methods were used to investigate its behavior. By optimizing the parameters, good measurement results were obtained.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xiwei Cui, Yue Qin, Xin Han, Huanyi Chen, Xinxin Ruan, Hui Zhang, Chengcheng Jiao, Rongqi Mao, Jinglin Hao, Sizhuang Zhao, Shuai Hou, Xiaoxuan Pian, Yandong Wang, Kazuhito Nishimura, Lifen Deng, Nan Jiang
Summary: This paper investigates the friction and wear behaviors of two types of polycrystalline diamonds against different materials. The results show that increasing surface roughness leads to an increase in coefficient of friction. The coefficient of friction and wear rate of ceramic Si3N4 balls are generally lower than those of steel GCr15 balls, except for one type of polycrystalline diamond. Transfer films of SiO2 and its hydrate are observed at the friction interface, which contribute to smoother friction and wear. Carbon-based transfer films are also identified, mainly catalyzed by residual cobalt in the polycrystalline diamonds, leading to a phase transformation.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Menglei Sun, Pengjun Li, Mao Wang, Yidan Liang, Xudong Yang, Shujie Pang
Summary: In this study, carbonized polymer dots were synthesized by a one-step hydrothermal method, and silver nanoclusters were synthesized by UV lamp irradiation. They were then self-assembled by electrostatic force to prepare a dual-emission fluorescent nanocomposite that responds to temperature changes. The nanocomposite showed two emission peaks and exhibited excellent linearity between 20°C and 80°C.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Mohamed J. Saadh, Durgesh Singh, Diego Mayorga, Anjan Kumar, Maria Albuja, Ahmad Ismael Saber, Mohammed Ahmed Mustafa, Yasser Elmasry, Noubu Sun
Summary: Based on density functional theory, it is found that the C3N monolayer has good adsorption capability for Hg0 and a short recovery time. This study suggests that the C3N monolayer is a promising adsorbent material for efficient control of gaseous mercury.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Rajendra Kumar Nare, Sivalingam Ramesh, Vijay Kakani, Yuvaraj Haldorai, Chandrasekaran Karthikeyan, Basivi Praveen Kumar, Nadavala Siva Kumar, Mohammad Asif, S. Naresh Kumar, D. Prakash Babu, K. Ramakrishna Reddy, Visweswara Rao Pasupuleti
Summary: This study examines the latest advancements in carbon nanotube (CNT) supercapacitors and related composites, aiming to identify strategies for enhancing their performance. The researchers used ultrasonication aided hydrothermal technique to synthesize a composite made of nitrogen doped carbon nanotubes and porous NiCo2O4 nanomaterial. The composite electrode exhibited excellent cycling stability and a rising specific capacitance, making it appealing for high-performance supercapacitor applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
D. Mary Deena, S. Arockia Anushya, A. Dhanusha, T. C. Sabari Girisun, A. Philominal
Summary: A single-beam Z-Scan experiment was conducted to investigate the nonlinear optical absorption and optical limiting properties of Bi2O3, rGO/Bi2O3, Bi2O3/WO3, and rGO/Bi2O3/WO3 nanostructures. The results showed that the synthesized nanostructures exhibited varying levels of nonlinear absorption, with bismuth-based nanostructures showing the lowest optical limiting threshold and a higher two-photon absorption coefficient. The presence of rGO contributed to the extended conjugation for charge transfer, while the strong UV-Visible absorption of Bi2O3 and WO3 led to a unique nonlinear optical response.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Weibing Guo, Yiren Hu, Tao Wang, Xiaoguang Chen
Summary: This study investigated the microstructure and forming mechanism of graphite/copper joints that were brazed using Ti-containing filler. The results showed that increasing the brazing temperature improved the heat transfer and tensile properties of the composites. Additionally, the composites exhibited high heat flux and faster heating rate compared to copper and aluminum.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ming Li, ZhiWen Wang, Yu Teng, Hongyu Zhao, Bowei Li, Yang Liu, Shengxue Wang, Zhenze Yang, Liangchao Chen, Hongan Ma, Xiaopeng Jia
Summary: In the experiment, different Ni-content catalysts were used to synthesize diamond crystals, and the properties of the synthesized diamonds were analyzed. The results revealed that the Ni content in the catalyst affects the crystallinity of diamond crystals and the nitrogen crystallinity. The photoluminescence spectroscopy also showed that the diamond synthesized by using Fe-containing catalyst has specific NV-color center structure.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ling-Feng Mao
Summary: This study proposes an LSTM model to predict the work function of adsorbed metal atoms on graphene, which can quickly screen surface structures with target work function, saving computing and time costs, and improving device performance.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Runzhou Xu, Yinshui Liu, Qian Cheng, Zhenyao Wang, Kai Ma, Peiling Ke, Yipan Deng
Summary: The wear resistance of 17-4PH stainless steel was significantly improved by depositing multi-layered Cr/CrC/DLC coating at wide temperature range. The coating exhibited excellent lubrication and protective properties, and the wear mechanism changed with increasing temperature. The tribochemical reaction during the wear process played a crucial role in the graphitization transformation and friction properties of the coating.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xilong Guo, Jiaxin Song, Shanling Wang, Li Lei, Omololu Odunmbaku, Ayoub Taallah, Yi He, Aiqun Gu, Filippo S. Boi
Summary: The recent observations of superconductive-ordering in carbon-based systems consisting of rhombohedral stacking-faults, trilayer graphene (ABC-stacks) or dislocation-rich interfaces (pyrolytic graphite) have attracted significant attention. In this study, an unusual nucleation of rhombohedral stacking-faults in low-dimensional systems comprising of multiwall carbon nanotube (CNT) buckypapers was reported. The presence of sulfur doping resulted in a broad-band at the Raman shift from 1800 to 2000 cm(-1), indicating contributions arising from disorder-rich regions with rhombohedral stacking-order (ABC-stacks). These observations were further supported by X-ray diffraction and Rietveld refinements.
DIAMOND AND RELATED MATERIALS
(2024)
