Review
Nanoscience & Nanotechnology
Wu Zhang, Haizeng Li, Eric Hopmann, Abdulhakem Y. Elezzabi
Summary: Electrochromism, an emerging energy conversion technology, is facing the major challenge of slow switching speed, especially in inorganic materials. Efficient design of nanostructured electrochromic materials is essential to achieve rapid switching speed and enhance their performance in real-world applications.
Review
Nanoscience & Nanotechnology
Wu Zhang, Haizeng Li, Eric Hopmann, Abdulhalcem Y. Elezzabi
Summary: Electrochromism is a promising energy conversion technology with diverse applications, but the major challenge lies in the slow switching speed in inorganic materials. Efficient design of nanostructured electrochromic materials is crucial for achieving rapid switching speeds. Various classification and synthesis methods for electrochromic materials were discussed in the review, along with outlining challenges and prospects for high-performance nanostructured electrochromic materials.
Article
Chemistry, Physical
A. Borroto, S. Bruyere, S. Migot, C. de Melo, D. Horwat, J. F. Pierson
Summary: This study provides new insights into the formation of Zr-Cu nanostructured metallic glass thin films (NMGTF) deposited by magnetron sputtering. The film microstructure can be tuned from homogeneous and compact to nanostructured, formed by nanocolumns, by varying the working-gas pressure and the alloy composition. The microstructural change allows the electrical resistivity and the optical reflectance of the films to be tailored, and the results could have potential applications in the field of optoelectronics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Felipe J. Valencia, Viviana Aurora, Max Ramirez, Carlos J. Ruestes, Alejandro Prada, Alejandro Varas, Jose Rogan
Summary: This study investigates the mechanical properties of porous nanoshells using nanoindentation technique. The results show that the mechanical properties of porous nanoshells are closely related to the shell porosity. When the porosity is low, deformation is similar to polycrystalline and single-crystalline nanoshells involving dislocation activity. However, with the increase in porosity, plastic deformation is mediated by grain boundary sliding instead of dislocation activity. Porosity suppresses dislocation activity, decreases nanoparticle strength, but allows significant strain hardening. Young's modulus decreases with the increase in nanoshell porosity, but conventional models fail to quantitatively predict it.
Review
Physics, Multidisciplinary
Lianzhen Cao, Xia Liu, Yingde Li, Xiusheng Li, Lena Du, Shengyao Chen, Shenlong Zhao, Cong Wang
Summary: Low-dimensional all-inorganic metal halide perovskite (AIMHP) materials, as a new class of nanomaterials, show great potential for various optoelectronic devices. Significant progress has been made in developing efficient and stable AIMHP nanomaterials for optical property studies and practical applications such as solar cells and LEDs. The effects of material compositions, dimensionality, morphologies, and structures on optical properties have been summarized, along with highlighting critical challenges and future opportunities in this emerging field.
FRONTIERS OF PHYSICS
(2021)
Article
Chemistry, Physical
Nadezhda S. Smirnova, Evgeny Khramov, Igor P. Stolarov, Ilya A. Yakushev, Galina N. Baeva, Galina O. Bragina, Ekaterina Belova, Arcady Ishchenko, Anna S. Popova, Yan Zubavichus, Michael N. Vargaftik, Aleksander Y. Stakheev
Summary: This study thoroughly investigates the phase transformations of a newly synthesized heterobimetallic acetate in a chemically reductive atmosphere, with a focus on optimizing conditions for the formation of nanostructured PtZn intermetallic compound. Through a two-stage process, the formation of ordered PtZn intermetallic compound with a tetragonal structure is achieved in a narrow temperature range. The results provide insight into the optimum reduction temperature for the preparation of supported bimetallic Pt?Zn/Al2O3 catalyst.
Article
Chemistry, Multidisciplinary
Youngkyu Hwang, Anupam Sadhu, Sangho Shin, Shin Woei Leow, Ze Zhao, Jingyu Deng, Joshua A. Jackman, Munho Kim, Lydia H. Wong, Nam-Joon Cho
Summary: This study reports the fabrication of a flexible substrate made from pollen, which exhibits high transparency (>92%) and high haze (>84%), with optical properties that are tunable and arise from light-matter interactions with the spiky surface of pollen particles. The pollen substrate, readily obtained from nature and requiring minimal extraction or processing, can be incorporated into optoelectronic applications such as functional perovskite solar cells.
ADVANCED MATERIALS
(2021)
Review
Chemistry, Physical
Fenil J. Desai, Md Nizam Uddin, Muhammad M. Rahman, Ramazan Asmatulu
Summary: Hydrogen-based economy has the potential to address global environmental concerns by using hydrogen as a future energy carrier. Among various solid-state hydrogen storage materials, metal hydrides have the highest energy density. However, the accessibility of hydrogen in metal hydrides is challenging. To improve the hydrogen storage kinetics, the effects of functionalized catalysts and dopants on metal atoms have been extensively studied. The nanostructuring of metal hydrides with carbon-based materials has shown promising results in enhancing hydrogen storage properties. This review summarizes the effects of carbon-based materials, catalysts, and dopants on hydrogen storage capacity and kinetics, and discusses the potential of nanoscale tailoring of metal hydrides with carbon materials for industrial applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Optics
Battulga Munkhbat, Betul Kucukoz, Denis G. Baranov, Tomasz J. Antosiewicz, Timur O. Shegai
Summary: Transition metal dichalcogenides (TMDs), including semiconducting WS2, in-plane anisotropic ReS2, and metallic TaSe2, TaS2, and NbSe2, have attracted significant attention due to their exceptional optical, excitonic, mechanical, and electronic properties. Nanostructured multilayer TMDs, with their high refractive indices and optical anisotropy, show promise for nanophotonic applications. Advanced nanofabrication strategies, including careful selection of resists for electron beam lithography and etching methods, are discussed, with a specific focus on non-conductive substrates such as SiO2. These TMD-based nanostructures have the potential to impact high-index nanophotonics, plasmonics, and on-chip optical circuits.
LASER & PHOTONICS REVIEWS
(2023)
Review
Chemistry, Physical
Huan Yang, Huilin Hu, Chenfeng Xia, Feng You, Junlong Yao, Xueliang Jiang, Bao Yu Xia
Summary: This article summarizes the applications of gel materials in oxygen electrocatalysis and introduces the synthesis methods of gel materials. The author proposes the outlook for further developing advanced gel oxygen electrocatalysts.
Article
Engineering, Electrical & Electronic
Alicja Anuszkiewicz, Marcin Franczyk, Dariusz Pysz, Filip Wlodarczyk, Adam Filipkowski, Ryszard Buczynski, Tomasz Osuch
Summary: We have developed a silica-based large mode area fiber with a nanostructured core for use in fiber laser cavities. Our experimental results demonstrate that the fiber operates in single mode with low bending loss. We have also successfully fabricated high reflectivity UV induced fiber Bragg gratings and utilized them in a fiber laser setup. The flexibility of the nanostructuring approach holds promise for the development of passive fiber components that can be matched with any type of active fibers.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
D. Garzon, J. E. Diosa, C. Ostos, F. H. Sanchez, G. A. Munoz Medina, F. Sieves, O. Arnache
Summary: (Fe30Cu70)(96)B-4 (FCB) alloys were prepared by mechanical milling and characterized for structural, morphological, and magnetic properties with increasing milling time. The nanoparticles formed after 12 hours of milling exhibit superparamagnetic-like behavior at temperatures below 60 K despite being ferromagnetic at room temperature. The saturation magnetization and coercive field values change with milling time.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Tatyana B. Bekker, Alexey A. Ryadun, Alexey V. Davydov, Vladimir P. Solntsev, Veronika D. Grigorieva
Summary: Single crystals of undoped and rare-earth-doped Ba-12(BO3)(6)[BO3][LiF4] were grown from high-temperature solutions. The luminescence of these crystals at specific excitation wavelengths shows potential for converting LED emissions into white light.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Energy & Fuels
Ranjit S. Kate, Habib M. Pathan, Ramchandra Kalubarme, Bharat B. Kale, Ramesh J. Deokate
Summary: This paper provides an overview of the research progress on metal oxide thin films for supercapacitor applications. The spray pyrolysis technique is used to deposit these films, which have high energy and power density, making them important for energy storage. The films have a large surface area and appropriate pore size distribution due to the nanostructured metal oxides, resulting in high specific capacitance and improved performance.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Multidisciplinary
Jie Xiong, San-Qiang Shi, Tong-Yi Zhang
Summary: This study collected a large amount of data on CCAs samples and developed classification and regression models to predict phase formation and mechanical properties. The identification of key features through SHAP values provides important insights for designing improved mechanical properties of CCAs. The study demonstrates the great potential of machine learning in the design of advanced CCAs.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jia Liu, Song Ma, Kai Chen, Wei Wang, Peng-Fei Wang, Li Zhou, Qu-Quan Wang
Summary: Spherical mixed-valence rhenium oxide nanoparticles with localized surface plasmon resonances were synthesized and converted into hydrogen rhenium bronze nanosheets. The dispersion of HxReO3 in aqueous solution enhanced LSPR intensity and wavelength. The HxReO3-CdS hetero-nanocrystals showed significantly higher photocatalytic hydrogen production rate compared to pure CdS, attributed to increased light absorption and electron transfer facilitated by HxReO3.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Multidisciplinary
Song Ma, Da-Jie Yang, Si-Jing Ding, Jia Liu, Wei Wang, Zhi-Yong Wu, Xiao-Dan Liu, Li Zhou, Qu-Quan Wang
Summary: The quantum behavior of surface plasmons has attracted attention due to nanotechnology advancements and diverse applications. Through an improved semiclassical model, this study investigates the effects of charge and size on plasmon shifts in metal nanoparticles, shedding light on the controversial size dependences reported in literature.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Hao-Sen Kang, Ming-Yang Long, Tao Zhou, Jin-Chuang Liu, Yi-Tong Duan, Liang Ma, Xiang-Bai Chen, Si-Jing Ding, Li Zhou
Summary: This study successfully prepared PbS-Au hybrids with high-index facets and strong light absorption, showing significantly improved SERS signals for Rhodamine B detection. By adjusting the size and amount of Au nanoparticles, the SERS detection limit was lowered to 10(-12) M with an analytical enhancement factor of 5.1 x 10(8). The recycling and self-cleaning properties under visible light irradiation were demonstrated, attributed to the broad plasmon absorption and fast charge transfer between Au and PbS, offering a potential way for efficient SERS substrates development.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Li Cheng, Yu-Ting Zhong, Qu-Quan Wang, Li Zhou
Summary: We report an approach to prepare Cu/Cu2-xS core/shell nanorods by in situ sulfidation of copper nanorods. The thickness of Cu2-xS layer can be adjusted by controlling the amount of S source. The Cu/Cu2-xS core/shell nanorods demonstrate enhanced photocatalytic performance compared to Cu nanorods.
Article
Nanoscience & Nanotechnology
Xujie Wang, Zhenlong Dou, Chi Zhang, FangFang Deng, XiaoLin Lu, ShuangShuang Wang, Li Zhou, Tao Ding
Summary: Anisotropy is important in various material systems, but creating and controlling it has been a challenge. Polarization-addressed anisotropy is attractive due to its controllability, simplicity, and accuracy, but only a few material systems can achieve it. In this study, a polarization-dependent anisotropic etching system made of Au@oligomer core-shell nanoparticles was established. The etching process is faster along the polarization direction, resulting in shape anisotropy of the particles. This system has advantages of high selectivity, controllability, and versatility, opening up new possibilities for on-chip nanofabrication.
Article
Chemistry, Physical
Linyu Hu, Yuqi Li, Wenbo Chen, Xiaogang Liu, Shan Liang, Ziqiang Cheng, Jianbo Li, Li Zhou
Summary: In this paper, Cu2-xSe-modified Au/Bi2Se3 hybrid nanoparticles with porous shells were prepared, and a Bi2Se3/Cu2-xSe Z-scheme heterojunction was formed. The hybrids exhibited broad and strong plasmon resonance absorption in the visible band due to the effective coupling between the Au core and semiconductor shells. The carrier lifetime of the hybrids could be tailored by adjusting the Cu2-xSe content. The 0.1-Au/Bi2Se3/Cu2-xSe electrode with the longest electron lifetime showed enhanced photoelectrochemical performance. Compared to pure Bi2Se3 and Au/Bi2Se3 nanoparticles, the porous Au/Bi2Se3/Cu2-xSe hybrid photoanodes demonstrated significantly increased photoconversion efficiency under simulated sunlight illumination, thanks to the cooperation of the Z-scheme heterojunction and plasmon resonance enhancement effects.
Article
Chemistry, Physical
Zhi-Di Li, Hao-Sen Kang, Ming-Yang Long, Jing-Chuan Liu, Tao Zhou, Dan Zhu, Liang Ma, Si-Jing Ding, Li Zhou
Summary: In this study, structure-adjustable Au nanodumbbells were prepared and used for plasmon-enhanced surface-enhanced Raman scattering (SERS) and second-harmonic generation (SHG). The results showed that the Au nanodumbbells exhibited better performance in enhancing Raman signals compared to Au nanorods, and double-resonantly enhanced SHG was achieved by precisely adjusting the end size of the nanodumbbells.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Wen-Qin Zhao, Qing Zhao, Zheng-Ke Song, Liang Ma, Xiang-Bai Chen, Si-Jing Ding, Li Zhou
Summary: The study combines narrow-bandgap PbS, wide-bandgap WO3-x, and Au nanoparticles to form a plasmon-mediated Z-scheme nanostructure, which shows excellent light absorption and charge separation abilities, enhancing photocatalytic hydrogen generation activity, especially with good apparent quantum efficiency under near-infrared light irradiation.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Zhi-Yong Wu, Zhen-Long Dou, Li-Jiong Chen, Li Zhou, Qu-Quan Wang
Summary: Nonlinear optical signals of metallic nanoparticle films reach a maximum at the percolation threshold. By depositing Ag nanoparticles on the percolating Au nanoparticle film, we constructed conductive Ag/Au bilayer films and compared their second harmonic generation (SHG) with that of single-component (Au or Ag) nanoparticle films. We observed a 680% SHG enhancement in the Ag/Au bilayer film compared to the percolating Au nanoparticle film, attributed to the cooperative effect of surface plasmon resonances, interband transitions, and the percolation effect. These findings provide a strategy for designing nonlinear photonic nanodevices with optimized performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Yang Yang, Xiang Long, Feng-Yuan Zhang, Hang-Yu Yan, Guo-Wei Li, Meng-Dai Luoshan, Chu-Yun Huang, Li Zhou
Summary: This study demonstrates the controllable growth of Pt-Au nanoplates and Au@Pt nanorings with superior photothermal conversion efficiency. Hexagonal Au nanoplates are used as templates, obtained through a transformation reaction from Au nanotriangles. Pt-Au nanoplates are prepared by a site-selective growth of Pt on the rim of obtained hexagonal Au nanoplates. Subsequently, Pt nanorings are obtained by a selective etching of Au, and a regrowth of Au on the Pt nanorings leads to bimetallic Au@Pt nanorings. The improvement in photothermal effect can be attributed to the strong surface plasmon resonances and coupling between Au and Pt.
Article
Chemistry, Multidisciplinary
Hao-Sen Kang, Jing-Wen Zou, Yang Liu, Liang Ma, Jing-Ru Feng, Zi-Yang Yu, Xiang-Bai Chen, Si-Jing Ding, Li Zhou, Qu-Quan Wang
Summary: A three-plasmon hybrid material consisting of core-shell Au@Cu2-xS hybrids bonded with ultrathin Ti3C2Tx MXene is prepared for efficient photothermal conversion and solar water evaporation. The hybrid material exhibits excellent photothermal conversion efficiency, light absorption, and charge transfer capabilities. The combination with MXene as a membrane material results in high evaporation rate and light-to-heat conversion efficiency. Furthermore, a solar evaporation device is designed based on liquid pressure and connectors, demonstrating potential applications in water purification and drinkable water generation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jia Liu, Xin Wang, Leiyang Zhang, Chunchun Li, Guanjun Zhu, Zhuang Miao, Amei Zhang, Hongping Hou, Zhenhua Zhou, Li Zhou, Ququan Wang, Hongliang Du
Summary: Photocatalytic water splitting for hydrogen production has been explored in energy science, but efficiency is often lacking. This study proposes a controlled synthetic strategy to develop concave gold nanorods (Au NRs) with enhanced photocatalytic performance. The concave Au NRs, synthesized in aqueous solution, exhibit high-index facets and unique plasmon resonance modes. By selectively growing Pt nanoparticles and CdS nanocrystals onto the Au NRs, the photocatalytic H2 production rate reaches as high as 21654.56 μmol•g^-^1•h^-^1, demonstrating the great potential of faceted metal nanostructures for efficient photocatalysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Xiang Long, Yang Yang, Zhen-Long Dou, Qu-Quan Wang, Li Zhou
Summary: We report an effective method to synthesize dumbbell-like Au-PtCu solid and hollow nanorods, regulated by the unique surface capping and oxidation etching roles of copper ions. Dumbbell-like nanorods are prepared through site-selective co-deposition of platinum and copper on both tips of gold nanorods assisted by the capping effect of the CTAB-Cu+ complex to passivate the side surface. Hollow dumbbell-like Au-PtCu nanorods are formed through triggering the etching effect of copper ions by increasing the reaction temperature to 80°C. The manipulation of the morphology and extinction properties of the trimetallic Au-PtCu nanorods is demonstrated by adjusting the concentration of copper ions. Under excitation with a near-infrared 808 nm laser, the dumbbell-like Au-PtCu nanorods show excellent photothermal conversion, with a 3.1 times temperature increment (ΔT) compared to bare Au nanorods, while the hollow dumbbell-like Au-PtCu NRs demonstrate improved photocatalytic activity under xenon lamp irradiation. The capping and etching properties of copper ions were demonstrated to synthesize different Au-PtCu nanorods with improved photothermal and photocatalytic activities.
Article
Chemistry, Multidisciplinary
Jing-Ru Feng, Zhi-Rui Zhao, Zhong-Long Xiong, Hao-Sen Kang, Si-Jing Ding, Liang Ma, Li Zhou
Summary: By changing the shape and composition, the plasmon-enhanced optical properties of nanomaterials can be controlled. In this study, Au/PbS/Au nanostars with multiple tips were synthesized using a gentle approach, and their SERS activity, SHG, and photocatalytic performance were explored. The Au/PbS/Au nanostars exhibited broad spectral responses and enhanced local electric fields, leading to improved SERS activity and photocatalytic efficiency.
Article
Chemistry, Multidisciplinary
Tao Zhou, Si-Jing Ding, Zhi-Yong Wu, Da-Jie Yang, Li-Na Zhou, Zhi-Rui Zhao, Liang Ma, Wei Wang, Song Ma, Si-Man Wang, Jia-Nan Zou, Li Zhou, Qu-Quan Wang
Summary: The collaboration of magnetic and electric plasmon resonance modes in cup-shaped metallic nanostructures leads to significantly broadened and highly tunable optical responses. Different morphologies of Au nanoshells exhibit two maximal SHG intensities, depending on the number and size of openings. Ag/Au and AuAg/Ag/Au open nanoshells show enhanced SHG intensities by adjusting the thickness of the metal shells.
Article
Nanoscience & Nanotechnology
Jie Zhang, Xiaoyang Chen, MingJian Ding, Jiaqiang Chen, Ping Yu
Summary: This study enhances the compositional inhomogeneity of relaxor ferroelectric thin films to improve their dielectric temperature stability. The prepared films exhibit a relatively high dielectric constant and a very low variation ratio of dielectric constant over a wide temperature range.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xiaoyu Chen, Ranran Zhang, Hao Zou, Ling Li, Qiancheng Zhu, Wenming Zhang
Summary: Polyaniline-manganese dioxide composites exhibit high conductivity, long discharge platform, and stable circulation, and the specific capacity is increased by providing additional H+ ions to participate in the reaction.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xutao Huang, Yinping Chen, Jianjun Wang, Gang Lu, Wenxin Wang, Zan Yao, Sixin Zhao, Yujie Liu, Qian Li
Summary: This study aims to establish a novel approach to better understand and predict the behavior of materials with multi-scale lamellar microstructures. High-resolution reconstruction and collaborative characterization methods are used to accurately represent the microstructure. The mechanical properties of pearlite are investigated using crystal plasticity simulation and in-situ scanning electron microscopy tensile testing. The results validate the reliability of the novel strategy.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Cheng Chen, Fanchao Meng, Jun Song
Summary: This study systematically investigated the unfaulting mechanism of single-layer interstitial dislocation loops in irradiated L12-Ni3Al. The unfaulting routes of the loops were uncovered and the symmetry breaking during the unfaulting processes was further elucidated. A continuum model was formulated to analyze the energetics of the loops and predict the unfaulting threshold.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Darshan Bamney, Laurent Capolungo
Summary: This work investigates the formation of adjoining twin pairs (ATPs) at grain boundaries (GBs) in hexagonal close-packed (hcp) metals, focusing on the co-nucleation (CN) of pairs of deformation twins. A continuum defect mechanics model is proposed to study the energetic feasibility of CN of ATPs resulting from GB dislocation dissociation. The model reveals that CN is preferred over the nucleation of a single twin variant for low misorientation angle GBs. Further analysis considering GB character and twin system alignment suggests that CN events could be responsible for ATP formation even at low m' values.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Bing Han, Zhengqian Fu, Guoxiang Zhao, Xuefeng Chen, Genshui Wang, Fangfang Xu
Summary: This study investigates the behavior of electric-field induced antiferroelectric to ferroelectric (AFE-FE) phase transition and reveals the evolution of atomic displacement ordering as the cause for the transition behavior changing from sharp to diffuse. The novel semi-ordered configuration results from the competing interaction between long-range displacement modulation and compositional inhomogeneity, which leads to a diffuse AFE-FE transition while maintaining the switching field.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Akib Jabed, Golden Kumar
Summary: This study demonstrates that cryogenic rejuvenation promotes homogeneous-like flow and increases ductility in metallic glass samples. Conversely, annealing has the opposite effect, resulting in a smoother fracture surface.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xin Ji, Yan Chong, Satoshi Emura, Koichi Tsuchiya
Summary: A heterogeneous microstructure in Ti-15Mo-3Al alloy with heterogeneous distributions of Mo element and omega(iso) precipitates has achieved a four-fold increase in tensile ductility without a loss of tensile strength, by blocking the propagation of dislocation channels and preventing the formation of micro-cracks.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Amit Samanta, Prasanna Balaprakash, Sylvie Aubry, Brian K. Lin
Summary: This study proposes a combined large-scale first principles approach with machine learning and materials informatics to quickly explore the chemistry-composition space of advanced high strength steels (AHSS). The distribution of aluminum and manganese atoms in iron is systematically explored using first principles calculations to investigate low stacking fault energy configurations. The use of an automated machine learning tool, DeepHyper, speeds up the computational process. The study provides insights into the distribution of aluminum and manganese atoms in systems containing stacking faults and their effects on the equilibrium distribution.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Guowei Zhou, Yuanzhe Hu, Zizheng Cao, Myoung Gyu Lee, Dayong Li
Summary: In this work, a physics-constrained neural network is used to predict grain-level responses in FCC material by incorporating crystal plasticity theory. The key feature, shear strain rate of slip system, is identified based on crystal plasticity and incorporated into the loss function as physical constitutive equations. The introduction of physics constraints accelerates the convergence of the neural network model and improves prediction accuracy, especially for small-scale datasets. Transfer learning is performed to capture complex in-plane deformation of crystals with any initial orientations, including cyclic loading and arbitrary non-monotonic loading.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Pengfei Yang, Qichang Li, Zhongying Wang, Yuxiao Gao, Wei Jin, Weiping Xiao, Lei Wang, Fusheng Liu, Zexing Wu
Summary: In this study, the HER performance of Ru-based catalysts is significantly improved through the dual-doping strategy. The obtained catalyst exhibits excellent performance in alkaline freshwater and alkaline seawater, and can be stably operated in a self-assembled overall water splitting electrolyzer.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ilias Bikmukhametov, Garritt J. Tucker, Gregory B. Thompson
Summary: Depositing a Ni-1at. % P film can facilitate the formation of multiple quintuple twin junctions, resulting in a five-fold twin structure and a pentagonal pyramid surface topology. The ability to control material structures offers opportunities for creating novel surface topologies, which can be used as arrays of field emitters or textured surfaces.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Zening Yang, Weiwei Sun, Zhengyu Sun, Mutian Zhang, Jin Yu, Yubin Wen
Summary: Multicomponent oxides (MCOs) have wide applications and accurately predicting their thermal expansion remains challenging. This study introduces an innovative attention-based deep learning model, which achieves improved performance by using two self-attention modules and demonstrates adaptability and interpretability.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ze Liu, Cai Chen, Yuanxun Zhou, Lanting Zhang, Hong Wang
Summary: This study attempts to address the gap in cooling rates between thin film deposition and bulk metallic glass (BMG) casting by correlating the glass-forming range (GFR) determined from combinatorial materials chips (CMCs) with the glass-forming ability (GFA) of BMG. The results show that the full-width at half maximum (FWHM) of the first sharp diffraction peak (FSDP) is a good indicator of BMG GFA, and strong positive correlations between FWHM and the critical casting diameter (Dmax) are observed in various BMG systems. Furthermore, the Pearson correlation coefficients suggest possible similarities in the GFA natures of certain BMG pairs.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Mike Schneider, Jean-Philippe Couzinie, Amin Shalabi, Farhad Ibrahimkhel, Alberto Ferrari, Fritz Koermann, Guillaume Laplanche
Summary: This work aims to predict the microstructure of recrystallized medium and high-entropy alloys, particularly the density and thickness of annealing twins. Through experiments and simulations, a database is provided for twin boundary engineering in alloy development. The results also support existing theories and empirical relationships.
SCRIPTA MATERIALIA
(2024)
