Article
Chemistry, Physical
F. Moradi, S. F. Abdul Sani, M. H. Norazri, N. M. Ung, K. S. Almugren, Kh. Rezaee Ebrahim Saraee, D. A. Bradley
Summary: Small field treatments in radiotherapy have become increasingly important for better control of target volume dose and improved therapeutic ratio. However, the dosimetry of small field techniques is more challenging due to the production of high dose areas with rapid dose rate fall off margins. In this study, Monte Carlo simulations were used to investigate the perturbation effect caused by dosimeter size in radiation fields. The results showed that small size silica fibre TL dosimeters have advantages in small field dosimetry, while conventional LiF TLDs produced significant perturbations, especially in small radiation fields.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
George X. X. Ding, Indra J. J. Das
Summary: This study investigates the validity of the field size definition by FWHM and by MLC/Jaw opening and finds the pros and cons between these two methods to resolve the controversial issue.
Article
Radiology, Nuclear Medicine & Medical Imaging
Mengying Shi, Cynthia F. Chuang, Nataliya Kovalchuk, Karl Bush, Daniel Zaks, Lei Xing, Murat Surucu, Bin Han
Summary: This study validates the small-field dosimetry of the RefleXion X1 system and establishes an accurate MC model. Through measured and simulated data, parameters such as output factors and dose distributions under different field sizes were obtained, demonstrating the reliability and accuracy of the system.
Article
Chemistry, Physical
Masayuki Yano, Fujio Araki, Takeshi Ohno
Summary: This study investigates the magnetic field effect in small-field dosimetry for an ELEKTA Unity MR-Linac system using Monte Carlo simulations. The results show that the magnetic field effect is small for ionization chambers with small cavity radius.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Engineering, Biomedical
Aleksi Saikkonen, Jarkko Ojala, Petri Sipila, Eeva Boman, Jani Keyrilaeinen
Summary: The objective of this study was to investigate the feasibility and accuracy of dose delivered from a high-dose-rate (HDR) afterloaders in keloid scar brachytherapy using Monte Carlo (MC) simulations and measurements. The treatment doses and central axis dose profiles were measured using dosimeters and films, and the results showed that the measured and simulated dose profiles matched well, indicating the possibility of achieving the nominal treatment dose with the utilized setup.
PHYSICS IN MEDICINE AND BIOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jason Holmes, Jiajian Shen, Jie Shan, Christopher L. Patrick, William W. Wong, Robert L. Foote, Samir H. Patel, Martin Bues, Wei Liu
Summary: This study evaluates the accuracy of the RayStation Monte Carlo dose engine and the suitability of MCsquare as a second check tool for modeling small-field block apertures in proton pencil beam scanning. The results show that both RayStation MC and MCsquare have good agreement with in-water dose measurements and can accurately model block apertures. MCsquare can be used as an adequate second check of RayStation MC.
Article
Chemistry, Physical
Oya Akyol, Turan Olgar, Turkay Toklu, Hakan Eren, Bahar Dirican
Summary: The study investigated the effect of different dental implant materials on dose distribution in head and neck cancer radiotherapy planning. Results showed that the PBC algorithm could not fully determine the dose due to backscattering caused by dental implants. The maximum dose increase was observed for the Y-TZP dental implant material.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Mingfei Yan, Baolong Ma, Takao Hashiguchi, Atsushi Taketani, Chihiro Iwamoto, Yasuo Wakabayashi, Kunihiro Fujita, Takaoki Takanashi, Masato Takamura, Tomohiro Kobayashi, Shota Ikeda, Maki Mizuta, Yujiro Ikeda, Yoshie Otake
Summary: To characterize the dose rate distribution in an experimental hall of a RIKEN accelerator-driven compact neutron source (RANS), measurements and calculations were performed for neutron and gamma-ray close rates. It was found that the calculations underestimated the measurements when not considering the proton beam loss effect. Additional neutron and gamma-ray sources were identified due to the proton beam loss at specific positions in the accelerator. Proposed measures to reduce the measured dose rate included adding a wall at the entrance of the experimental hall and extending borated polyethylene (BPE) at the end of the beam.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2022)
Article
Astronomy & Astrophysics
Bipasha Chakraborty, W. G. Parrott, C. Bouchard, C. T. H. Davies, J. Koponen, G. P. Lepage
Summary: This study accurately determines the value of V-cs by combining lattice QCD calculations with experimental results, allowing for a comparison with the Standard Model and revealing a visible difference from the expected value of 1. With an accuracy of 0.8%, the findings are of significant physical importance.
Article
Oncology
Xuanchu Ge, Mingshan Yang, Tengxiang Li, Tonghai Liu, Xiangyu Gao, Qingtao Qiu, Yong Yin
Summary: This study compared different algorithms for dose calculation in complex radiotherapy scenarios and found that the FSPB_LS algorithm showed better dose consistency with the MC algorithm compared to the traditional FSPB algorithm. It also demonstrated improved accuracy in terms of dose parameters for the tumor target. However, significant dose deviations were observed in organ-at-risk parameters for CLC with both the FSPB_LS and MC algorithms.
FRONTIERS IN ONCOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
George X. X. Ding, Kenneth L. Homann
Summary: This study aims to evaluate the benefits and feasibility of different energy beams for brain radiotherapy. The results show that using a 10 MV-FFF beam can significantly reduce the radiation delivery time.
Article
Chemistry, Physical
F. Moradi, Kh. Rezaee Ebrahim Saraee, D. A. Bradley
Summary: Assessment of radiation dose to the skin is crucial in radiotherapy and diagnostic imaging, with dosimeter placement and thickness affecting measured dose. Monte Carlo simulations can accurately calculate dose at intended depth, providing correction factors for TLD responses in various clinical situations.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Audrey Valentin, Ovidiu Brinza, Samir Farhat, Jocelyn Achard, Fabien Benedic
Summary: A 3D Kinetic Monte-Carlo (KMC) model is implemented to simulate the growth of (1 0 0)-oriented diamond films. The model accurately reproduces the step-flow growth mechanism and shows the anisotropy of step propagation.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Engineering, Biomedical
M. McManus, F. Romano, G. Royle, D. Botnariuc, D. Shipley, H. Palmans, A. Subiel
Summary: A detailed characterization of the Roos secondary standard plane-parallel ionization chamber was conducted in a novel 200 MeV Very High Energy Electron (VHEE) beam, with reference to the standard 12 MeV electron calibration beam used in experimental work. Stopping-power ratios, perturbation factors, and beam quality correction factor were determined and calculated using the Geant4 MC code. The results showed good agreement between the 12 MeV electron calibration beam and current dosimetry protocols, while the VHEE beam had lower variations. The beam quality correction factors were found to reduce the calculated dose by approximately 10%.
PHYSICS IN MEDICINE AND BIOLOGY
(2022)
Article
Astronomy & Astrophysics
Sungwoo Park, Rajan Gupta, Boram Yoon, Santanu Mondal, Tanmoy Bhattacharya, Yong-Chull Jang, Balint Joo, Frank Winter
Summary: This study presents a high statistics exploration of the isovector nucleon charges and form factors using 2 + 1-flavor Wilson-clover fermions. The results show that the axial vector and pseudoscalar form factors satisfy the partially conserved axial current relation when the lowest energy N pi excited state is included in the spectral decomposition. Evidence is also found that the N pi pi excited state contributes to the correlation functions with the insertion of the vector current. The resulting form factors are consistent with the Kelly parametrization of experimental data.
Article
Chemistry, Analytical
R. Manai, M. Habchi, D. Kamouni-Belghiti, M. A. Persuy, M. A. Persuy, L. Rousseau, M. Possas Abreu, D. Grebert, K. Badonnel, P. Bergonzo, E. Pajot-Augy, G. Sanz, E. Scorsone
SENSORS AND ACTUATORS B-CHEMICAL
(2017)
Article
Chemistry, Multidisciplinary
Silke Seyock, Vanessa Maybeck, Emmanuel Scorsone, Lionel Rousseau, Clement Hebert, Gaelle Lissorgues, Philippe Bergonzo, Andreas Offenhaeusser
Article
Instruments & Instrumentation
L. Baeni, A. Alexopoulos, M. Artuso, F. Bachmair, M. Bartosik, J. Beacham, H. Beck, V. Bellini, V. Belyaev, B. Bentele, E. Berdermann, P. Bergonzo, A. Bes, J-M. Brom, M. Bruzzi, M. Cerv, G. Chiodini, D. Chren, V. Cindro, G. Claus, J. Collot, J. Cumalat, A. Dabrowski, R. D'Alessandro, D. Dauvergne, W. de Boer, C. Dorfer, M. Duenser, V. Eremin, R. Eusebi, G. Forcolin, J. Forneris, H. Frais-Koelbl, L. Gallin-Martel, M. L. Gallin-Martel, K. K. Gan, M. Gastal, C. Giroletti, M. Goffe, J. Goldstein, A. Golubev, A. Gorisek, E. Grigoriev, J. Grosse-Knetter, A. Grummer, B. Gui, M. Guthoff, I. Haughton, B. Hiti, D. Hits, M. Hoeferkamp, T. Hofmann, J. Hosslet, J-Y. Hostachy, F. Huegging, C. Hutton, H. Jansen, J. Janssen, H. Kagan, K. Kanxheri, G. Kasieczka, R. Kass, F. Kassel, M. Kis, V. Konovalov, G. Kramberger, S. Kuleshov, A. Lacoste, S. Lagomarsino, A. Lo Giudice, E. Lukosi, C. Maazouzi, I. Mandic, C. Mathieu, M. Menichelli, M. Mikuz, A. Morozzi, J. Moss, R. Mountain, S. Murphy, M. Muskinja, A. Oh, P. Oliviero, D. Passeri, H. Pernegger, R. Perrino, F. Picollo, M. Pomorski, R. Potenza, A. Quadt, A. Re, M. Reichmann, G. Riley, S. Roe, D. Sanz, M. Scaringella, D. Schaefer, C. J. Schmidt, S. Schnetzer, S. Sciortino, A. Scorzoni, S. Seidel, L. Servoli, S. Smith, B. Sopko, V. Sopko, S. Spagnolo, S. Spanier, K. Stenson, R. Stone, C. Sutera, B. Tannenwald, A. Taylor, M. Traeger, D. Tromson, W. Trischuk, C. Tuve, L. Uplegger, J. Velthuis, N. Venturi, E. Vittone, S. Wagner, R. Wallny, J. C. Wang, J. Weingarten, C. Weiss, T. Wengler, N. Wermes, M. Yamouni, M. Zavrtanik
JOURNAL OF INSTRUMENTATION
(2018)
Article
Instruments & Instrumentation
H. Kagan, A. Alexopoulos, M. Artuso, F. Bachmair, L. Bani, M. Bartosik, J. Beacham, H. Beck, V. Bellini, V. Belyaev, B. Bentele, P. Bergonzo, A. Bes, J. -M. Brom, M. Bruzzi, G. Chiodini, D. Chren, V. Cindro, G. Claus, J. Collot, J. Cumalat, A. Dabrowski, R. D'Alessandro, D. Dauvergne, W. de Boer, S. Dick, C. Dorfer, M. Dunser, V. Eremin, G. Forcolin, J. Forneris, L. Gallin-Martel, M. -L. Gallin-Martel, K. K. Gan, M. Gastal, C. Giroletti, M. Goffe, J. Goldstein, A. Golubev, A. Gorisek, E. Grigoriev, J. Grosse-Knetter, A. Grummer, B. Gui, M. Guthoff, I. Haughton, B. Hiti, D. Hits, M. Hoeferkamp, T. Hofmann, J. Hosslet, J. -Y. Hostachy, F. Huegging, C. Hutton, J. Janssen, K. Kanxheri, G. Kasieczka, R. Kass, F. Kassel, M. Kis, G. Kramberger, S. Kuleshov, A. Lacoste, S. Lagomarsino, A. Lo Giudice, E. Lukosi, C. Maazouzi, I. Mandic, C. Mathieu, M. Menichelli, M. Mikuz, A. Morozzi, J. Moss, R. Mountain, S. Murphy, M. Muskinja, A. Oh, P. Olivero, D. Passeri, H. Pernegger, R. Perrino, F. Picollo, M. Pomorski, R. Potenza, A. Quadt, A. Re, M. Reichmann, G. Riley, S. Roe, D. Sanz, M. Scaringella, D. Schaefer, C. J. Schmidt, D. S. Smith, S. Schnetzer, S. Sciortino, A. Scorzoni, S. Seidel, L. Servoli, B. Sopko, V. Sopko, S. Spagnolo, S. Spanier, K. Stenson, R. Stone, C. Sutera, A. Taylor, B. Tannenwald, M. Traeger, D. Tromson, W. Trischuk, C. Tuve, J. Velthuis, N. Venturi, E. Vittone, S. Wagner, R. Wallny, J. C. Wang, J. Weingarten, C. Weiss, T. Wengler, N. Wermes, M. Yamouni, M. Zavrtanik
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2019)
Article
Instruments & Instrumentation
N. Venturi, A. Alexopoulos, M. Artuso, F. Bachmair, L. Bani, M. Bartosik, J. Beacham, H. Beck, V. Bellini, V. Belyaev, B. Bentele, P. Bergonzo, A. Bes, J. -M. Brom, M. Bruzzi, G. Chiodini, D. Chren, V. Cindro, G. Claus, J. Collot, J. Cumalat, A. Dabrowski, R. D'Alessandro, D. Dauvergne, W. de Boer, C. Dorfer, M. Dunser, V. Eremin, G. Forcolin, J. Forneris, L. Gallin-Martel, M. -L. Gallin-Martel, K. K. Gan, M. Gastal, C. Giroletti, M. Goffe, J. Goldstein, A. Golubev, A. Gorisek, E. Grigoriev, J. Grosse-Knetter, A. Grummer, B. Gui, M. Guthoff, I. Haughton, B. Hiti, D. Hits, M. Hoeferkamp, T. Hofmann, J. Hosslet, J. -Y. Hostachy, F. Huegging, C. Hutton, J. Janssen, H. Kagan, K. Kanxheri, G. Kasieczka, R. Kass, F. Kassel, M. Kis, G. Kramberger, S. Kuleshov, A. Lacoste, S. Lagomarsino, A. Lo Giudice, E. Lukosi, C. Maazouzi, I. Mandic, C. Mathieu, M. Menichelli, M. Mikuz, A. Morozzi, J. Moss, R. Mountain, S. Murphy, M. Muskinja, A. Oh, P. Olivero, D. Passeri, H. Pernegger, R. Perrino, F. Picollo, M. Pomorski, R. Potenza, A. Quadt, A. Re, M. Reichmann, G. Riley, S. Roe, D. Sanz, M. Scaringella, D. Schaefer, C. J. Schmidt, D. S. Smith, S. Schnetzer, S. Sciortino, A. Scorzoni, S. Seidel, L. Servoli, B. Sopko, V. Sopko, S. Spagnolo, S. Spanier, K. Stenson, R. Stone, C. Sutera, A. Taylor, B. Tannenwald, M. Traeger, D. Tromson, W. Trischuk, C. Tuve, J. Velthuis, E. Vittone, S. Wagner, R. Wallny, J. C. Wang, J. Weingarten, C. Weiss, T. Wengler, N. Wermes, M. Yamouni, M. Zavrtanik
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2019)
Article
Materials Science, Multidisciplinary
Izabella A. Zahradnik, Michal T. Pomorski, Ludovic De Marzi, Dominique Tromson, Philippe Barberet, Natko Skukan, Philippe Bergonzo, Guillaume Deves, Joel Herault, Wataru Kada, Thierry Pourcher, Samuel Saada
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2018)
Article
Chemistry, Multidisciplinary
Quang-Thuan Tran, Sylvie Pierre, Jacques de Sanoit, Michal Pomorski, Philippe Bergonzo
APPLIED SCIENCES-BASEL
(2019)
Article
Chemistry, Physical
Andreo Crnjac, Natko Skukan, Georgios Provatas, Mauricio Rodriguez-Ramos, Michal Pomorski, Milko Jaksic
Article
Electrochemistry
Olivier Henrotte, Alice Boudet, Ndrina Limani, Philippe Bergonzo, Bacem Zribi, Emmanuel Scorsone, Bruno Jousselme, Renaud Cornut
Article
Instruments & Instrumentation
K. Desjardins, M. Pomorski, T. Bizien, A. Thureau, C. Menneglier, J. Perez
Summary: The compact active x-ray beamstop developed for the SWING beamline at Synchrotron SOLEIL effectively protects the detector and monitors the intensity of the x-ray beam. Its specific design increases the small-angle x-ray scattering q-range by 1.5 times.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Physics, Applied
Andreo Crnjac, Mauricio R. Ramos, Natko Skukan, Michal Pomorski, Milko Jaksic
Summary: The research demonstrates that single crystal diamonds maintain excellent electronic properties at high temperatures, and radiation damage can lead to the formation of deep trapping levels. These deep trapping levels have an important impact on the performance of diamond detectors operating at high temperatures and under high radiation conditions.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Applied
Nicolas Moron, Baptiste Berenguier, Jose Alvarez, Jean-Paul Kleider
Summary: Modulated photoluminescence (MPL) is a technique for optoelectronic characterization of semiconductor materials. This study investigates the influence of defect level energy position, capture cross sections, and density on the frequency dependence of MPL phase using analytical and numerical modeling. The results demonstrate the capability of extracting quantitative information and emphasize the importance of proper experimental modeling.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Energy & Fuels
Davide Regaldo, Aleksandra Bojar, Sean P. Dunfield, Pilar Lopez-Varo, Mathieu Fregnaux, Vincent Dufoulon, Shan-Ting Zhang, Jose Alvarez, Joseph J. Berry, Jean-Baptiste Puel, Philip Schulz, Jean-Paul Kleider
Summary: Lead halide perovskites are utilized in semiconductor devices as absorbers with low doping levels to achieve high surface photovoltage values. Drift-diffusion simulations show that under continuous illumination, intrinsic perovskite-SCTL structures can develop mV range surface photovoltages, while actual measurements confirm SPVs in the hundreds of mV. The compatibility between low doping and defect densities in the perovskite layer and high SPV values is analyzed using numerical modeling to understand the electronic processes contributing to long SPV persistence after the illumination is switched off.
PROGRESS IN PHOTOVOLTAICS
(2022)
Article
Chemistry, Multidisciplinary
Quang-Trung Nguyen, Truong-Giang Le, Philippe Bergonzo, Quang-Thuan Tran
Summary: This work presents a method for preparing graphene/nickel nanocomposite materials using low-cost materials. The nanocomposite exhibits high performance as a sensor material, with small size nickel nanoparticles uniformly dispersed on a graphene oxide matrix. The sensor allows for rapid quantification of Sunset Yellow in the range of 10-1000 nM, with low detection limit and high sensitivity.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
M. A. Pinault-Thaury, F. Jomard, C. Mer-Calfati, N. Tranchant, M. Pomorski, P. Bergonzo, J. -C. Arnault
APPLIED SURFACE SCIENCE
(2017)
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)
