Article
Materials Science, Multidisciplinary
Y. Pipon, G. Victor, N. Moncoffre, G. Gutierrez, S. Miro, T. Douillard, O. Rapaud, N. Pradeilles, P. Sainsot, N. Toulhoat, M. Toulemonde
Summary: The behavior of boron carbide (B4C) under irradiation, particularly in relation to high electronic stopping powers (Se), has been extensively studied to predict its longevity in future nuclear fission reactors. Experimental results showed that under high Se values, significant surface damage and bulk amorphization occur in B4C, indicating the importance of understanding these effects for predicting material performance under irradiation.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Chemistry, Physical
R. A. Rymzhanov, N. Medvedev, A. E. Volkov
Summary: The response of CaF2 thin films to swift heavy ions irradiation was studied using Monte-Carlo code TREKIS and molecular dynamics simulations. Two main factors affecting the damage kinetics in ion tracks of films with different thickness were considered: electron emission and layer thickness. It was found that the damage modes varied depending on the layer thickness, with through holes formation in the thinnest layers, hillock formation in intermediate thicknesses, and nanocluster emission from thick layers.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Chemical
Haonan Yang, Guining Chen, Long Cheng, Yun Liu, Yaxiong Cheng, Huijun Yao, Yu Liu, Gongping Liu, Wanqin Jin
Summary: Graphene oxide (GO) has been recognized as an ideal building block for separation membranes due to its unique laminar structures and tunable physicochemical properties. In this study, swift heavy ion irradiation was used to enhance the gas permeation properties of GO membranes by creating through transport channels. The irradiation process induced disorder regions and nanopores in the laminates, and promoted cross-linking between oxygen-containing groups of GO, resulting in reduced interlayer spacing and enhanced molecular sieving capabilities. The irradiated GO membranes exhibited a significant improvement in hydrogen permeance, surpassing the upper-bound of H2/CO2 performance. This work demonstrates the feasibility of using heavy ion irradiation to create and tune interlayer channels.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
H. J. Yashwanth, A. B. Thorat, S. S. Dahiwale, S. D. Dhole, D. M. Phase, V. N. Bhoraskar, K. Hareesh
Summary: This study reports the modification of carbon quantum dots/titanium dioxide (CQDs/TiO2) nanocomposite properties through nitrogen ion beam irradiation. The results show that the irradiation alters the structure and optoelectrical properties of the CT nanocomposite.
Article
Nuclear Science & Technology
R. A. Rymzhanov, A. Akzhunussov, A. E. Volkov, A. D. Ibrayeva, V. A. Skuratov
Summary: The effect of ion irradiation on thermal transport in alumina was studied using molecular dynamics simulation. It was found that increasing ion flux leads to a decrease in thermal conductivity of alumina. The experimental and simulated results are in reasonable agreement, and it was observed that the highly damaged core of ion tracks has a significant impact on heat transport.
NUCLEAR MATERIALS AND ENERGY
(2022)
Article
Chemistry, Physical
M. Karlusic, M. Micetic, M. Kresic, M. Jaksic, B. Santic, I. Bogdanovic-Radovic, S. Bernstorff, H. Lebius, B. Ban-d'Etat, K. Zuzek Rozman, J. H. O'Connell, U. Hagemann, M. Schleberger
Summary: The study demonstrates that by tuning ion energy and fluence, different surface nanopattern morphologies like individual chains of nanohillocks, nanostripes, or nanoscaled ripples can be selected. Chemical etching can be used to create a negative replica of the nanopattern, while thermal annealing in vacuum can remove the surface track, offering new ways for achieving control over nanoscale surface modifications using swift heavy ion beams.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Dong Dong Zhao
Summary: The effects of stacking and incident angle on the structural damage caused by heavy ion irradiation in graphene are investigated using molecular dynamics simulation. The growth of stacking layers results in more serious damage to the overall and surface layers. There are obvious differences in the damage of each layer, with the damage becoming weaker towards the center. The impact of incident angle on damage is discussed in three-layer graphene, where the two surface layers are not affected, and the damage of the intermediate layer decreases with decreasing incident angle. The driving force for structural damage is the propagation of stress waves from the energy deposition region to the surrounding.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
J. Zeng, C. B. Nie, H. D. Zhang, P. P. Hu, K. Maaz, L. J. Xu, P. F. Zhai, X. R. Yang, S. X. Zhang, J. Liu
Summary: This work explores the irradiation effects of MoS2/Graphene heterostructure field effect transistors induced by swift heavy ions. It was found that graphene experienced damage and MoS2 exhibited changes in photoluminescence after irradiation. Latent tracks were observed on the surface of MoS2. The performance of the devices, including decreased resistance, increased carrier mobilities, increased photocurrent, and responsivity, showed variations under irradiation.
APPLIED SURFACE SCIENCE
(2024)
Article
Physics, Applied
Harsh Gupta, Ravi K. Bommali, Santanu Ghosh, Himanshu Srivastava, Arvind Srivastava, Pankaj Srivastava
Summary: This study examines the correlation between changes in structural and optical properties of a-SiNx:H thin films upon irradiation with 100MeV Au8+. The irradiation led to an increase in Si-N phase, bandgap, Urbach energy changes, broadening of oscillator parameters, and a change in film density, indicating a connection between optical and structural properties at the nanoscale level. The results suggest an increased disorder and introduction of defect states in the thin films due to irradiation.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
L. Torrisi, D. Manno, A. Serra, L. Calcagnile, A. Torrisi, M. Cutroneo, L. Silipigni
Summary: Different ion beams with varying energy levels have been used to irradiate graphene oxide foils, resulting in structural modifications and the formation of new phases. The irradiated graphene oxide foils exhibit a more compact and dense inner structure, with changes in diffraction peaks indicating the presence of new structural phases.
Article
Chemistry, Multidisciplinary
Jianling Hao, Yingang Gui, Yuehong Liu
Summary: This study investigates the adsorption performance of SF6 decomposition products on graphene-doped TiO2 sensors and finds that the doping of nTiO(2) significantly enhances the adsorption ability of graphene to gas molecules, which is of great significance for online monitoring methods and engineering applications of GIS.
Article
Materials Science, Multidisciplinary
S. X. Zhang, J. Zeng, P. P. Hu, L. J. Xu, K. Maaz, Z. Z. Li, L. Liu, P. F. Zhai, W. S. Ai, J. Liu
Summary: This study presents the characteristics of defects in MoSe2 sheets on different substrates caused by SHI irradiation, and investigates the role of the substrate in defect engineering of MoSe2. The findings provide fundamental insights into the influence of the substrate on defect engineering in TMDC materials, and offer a practical guide for choosing specific parameters of irradiated TMDC materials.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
S. R. Kumar, D. M. Phase, Ajay Gupta, A. C. Pandey, Ratnesh Gupta
Summary: The study synthesized ferromagnetic Co-doped TiO2 thin films at room temperature using RF sputtering and ion irradiation with 100 MeV Au ions. Increasing Au-ion fluence results in higher surface roughness of the film and alters its magnetic properties.
Article
Crystallography
Kristina Tomic Luketic, Juraj Hanzek, Catalina G. Mihalcea, Pavo Dubcek, Andreja Gajovic, Zdravko Siketic, Milko Jaksic, Corneliu Ghica, Marko Karlusic
Summary: This experimental study investigated the influence of ion beam charge state on damage production in nanomaterials. The findings showed a significant effect of ion charge state on damage production in monolayer graphene, but no evidence of this effect in bilayer and trilayer graphene, graphite, CaF2, and SiO2 nanocrystals irradiated by the same ion beam.
Article
Chemistry, Physical
Bipin Bihari Tripathy, Haripriya Rath, Naresh Chandra Mishra, Jayashree Das, Dilip Kumar Mishra
Summary: The effect of swift heavy ion irradiation on the TiO2 nanoparticles was studied, and it was found that the irradiation did not affect the crystal structure and polycrystalline nature, but suppressed the crystalline volume fraction. The creation of oxygen vacancies in TiO6 octahedra led to darkening of the surface and resulted in a suppressed band gap of the nanoparticles. The size and agglomeration of nanoparticles were unaffected by irradiation.
SURFACE AND INTERFACE ANALYSIS
(2023)
