Article
Materials Science, Coatings & Films
Sirikarn Sattawitchayapit, Visittapong Yordsri, Papan Panyavan, Tongjai Chookajorn
Summary: Nanostructured Nickel and Nickel-Cobalt coatings were synthesized by electrodeposition across the Co composition range of 0-83 wt%. The study investigated the effects of alloying level on surface morphology, microstructure, and phase formation. Results showed an increase in hardness with Co addition, but further Co addition led to phase change and decreased hardness despite smaller grain sizes.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Liu Wan, Dianyu Jiang, Yuqi Wang, Yan Zhang, Cheng Du, Mingjiang Xie, Jian Chen
Summary: In this study, Co0.85Se@Ni3S2 hybrid nanosheet arrays supported on carbon cloth substrate were synthesized through an efficient two-step electrodeposition method. The Co0.85Se@Ni3S2 heterojunction exhibited enriched active sites, improved electrical conductivity, and reduced ion diffusion resistance. The as-synthesized Co0.85Se@Ni3S2 electrode showed high gravimetric and volumetric capacitance, excellent rate capability, and good cycling performance. Additionally, a hybrid supercapacitor device demonstrated a high energy density and cyclic durability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zepeng Lv, Wansen Ma, Meng Wang, Jie Dang, Kailiang Jian, Dong Liu, Dejun Huang
Summary: The passage introduces an outstanding electrocatalyst with multiple heterostructure interfaces and a 3D porous structure, clarifying the mechanisms of enhanced electrocatalytic activity through multiple characterizations and density functional calculations. Specifically, the fabricated CPN@TC catalyst demonstrates excellent HER activity in 1 M KOH, attributed to its multiheterointerfaces for water and hydrogen adsorption, fine conductivity for electron transmission, and well-designed structure for rapid ion and gas transport. The study suggests that the synthetic strategy can be extended to enhance the catalytic performance of transition-metal-based phosphides.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiuren Ni, Chong Wang, Yuanzhang Su, Yuyao Luo, Yilin Ye, Xinhong Su, Wei He, Shouxu Wang, Yan Hong, Yuanming Chen, Guoyun Zhou, Bingyun Liu
Summary: This article introduces a method for the fabrication of cobalt pillars using multiple organic additives for electrodeposition, and investigates the role and competitive adsorption of the additives in cobalt electrodeposition. Through quantum chemical calculations and electroplating experiments, successful fabrication of practical cobalt pillars is achieved, promoting the application of metal cobalt in electronic packaging.
NANOTECHNOLOGY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Md Maksudur Rahman, Chloe L. Tolbert, Partha Saha, Jeffrey M. Halpern, Caleb M. Hill
Summary: This study demonstrates the fabrication of ordered nanoparticle arrays using SECCM. By dynamically monitoring the currents flowing in an SECCM cell, the nucleation and growth of nanoparticles can be controlled, allowing for precise control over their size and location. This SECCM-based approach has great potential in surface modification and analysis.
Article
Materials Science, Multidisciplinary
Thomas B. Clarke, Guillermo S. Colon, Jeffrey E. Dick
Summary: Gold has exciting properties and can be used in various applications. Although gold nanoparticles are commonly used, nanorings provide a new and interesting geometry. However, the fabrication of nanorings is challenging, particularly in creating nanoring arrays. This study demonstrates a simple method using electrodeposition to create arrays of gold nanorings with adjustable parameters.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Energy & Fuels
Fulin Yuan, Cong Li, Jinyu Wu, Yongfang Liang, Haifu Huang, Shuaikai Xu, Xianqing Liang, Wenzheng Zhou, Jin Guo
Summary: The facile synthesis strategy and enhanced energy storage performance of self-supported cobalt-based sulfide/oxide nanoarrays (Co-S/Co-O) are demonstrated for hybrid supercapacitors in this work. The Co-S/Co-O nanoarrays, with intertwined Co-S sulfide and Co-O oxide, show higher specific capacity and specific energy than individual Co-S and Co-O materials. This work provides a good strategy for improving the charge storage capacity of cobalt-based materials.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Youping Xiao, Pingmei Ming, Xinmin Zhang, Yanan Hou, Liqun Du, Shicheng Li, Yunyan Zhang, Jinlong Song
Summary: A novel synthesis method, ultrafine anode scanning electrode position (UAS-ECD), was proposed to produce high microhardness nanostructured metal materials without reducing tensile strength and introducing heterogeneous elements. By utilizing UAS-ECD, ultrapure nickel deposits with ultrahigh strength, mirror-like surfaces, and high ductility were successfully achieved, offering a promising strategy for synthesizing ultrahigh strength ultrapure NMMs.
MATERIALS & DESIGN
(2022)
Article
Energy & Fuels
Que Thi Nguyen, Umesh T. Nakate, JinYu Chen, Duy Thanh Tran, Sungjune Park
Summary: A two-step electrodeposition technique was used to fabricate nanostructured bilayered active material electrodes, achieving high-performance supercapacitors with reduced charge-transfer resistance. The optimized BC-II electrode showed a higher areal capacitance and maintained 99.8% capacitance stability after 1000 charge-discharge cycles.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Eduard E. Levin, Dmitriy A. Morozov, Vsevolod V. Frolov, Natalia A. Arkharova, Dmitry N. Khmelenin, Evgeny V. Antipov, Victoria A. Nikitina
Summary: Copper-based electrocatalytic materials with three-dimensional nanostructured electrodes are advantageous for various electrocatalytic processes. This study explores the roughness factors of electrodeposited copper foams and investigates the applicability of underpotential deposition (UPD) of lead for determining the real surface area (RSA) of copper deposits with hierarchical porosity. The optimized measurement conditions allowed for estimating roughness factors as high as 400 for 100 mu m thick foams.
Article
Energy & Fuels
G. Surender, Fatin Saiha Omar, Shahid Bashir, M. Pershaanaa, S. Ramesh, K. Ramesh
Summary: Renewable energy requires efficient storage devices for balancing electricity demand and supply. In this study, a cobalt sulfide electrode modified with different metals, such as manganese and copper, demonstrated enhanced performance in terms of specific capacitance and cycling stability. Among the electrodes tested, Mn-CoS-3/NF exhibited the best rate capability and capacitance retention, attributed to its unique nanostructure and low internal resistance.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Electrochemistry
E. Herrera, J. S. Riva, S. E. Urreta, M. Del C. Aguirre
Summary: This article describes the nucleation and growth mechanisms of bimetallic Sm-Co magnetic nanowires and nanotubes, which are electrocrystallized into hard anodic alumina templates. The electrodeposition process mainly proceeds under diffusional control, with current decreasing with time. Suitable models adapted to bimetallic phases are used to describe the experimental current/time curves and the morphology of the nanowires and nanotubes observed in SEM images.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Tao Guo, Kangqiang Pan, Yixuan Jiao, Bai Sun, Cheng Du, Joel P. Mills, Zuolong Chen, Xiaoye Zhao, Lan Wei, Y. Norman Zhou, Yimin A. Wu
Summary: A versatile memristor with volatile/non-volatile bifunctional properties has been developed, enabling non-volatile memory, selectors, artificial neurons, and artificial synapses. This provides advantages in terms of circuit simplification and manufacturing costs.
NANOSCALE HORIZONS
(2022)
Article
Materials Science, Multidisciplinary
Yan Wu, Xue Qiao, Wei Wang
Summary: Smooth dense Fe-Co films of 10 μm were successfully prepared in an economical, green, sulfate solution system via electrodeposition. The increase in main salt concentration and Co2+ concentration is beneficial for obtaining higher deposition rates. Increasing the temperature and current density can affect the surface morphology and mass fraction of Co in the films.
Article
Electrochemistry
Mani Jayakumar, Chandran Murugesan, Chrysanthus Andrew, Keerthi Natarajan, Ramachandran Sekar
Summary: The study discusses the electrodeposition and electroless deposition of rhenium coatings on various substrates, evaluating their corrosion resistance. Results show that under specific conditions, superior corrosion resistance can be achieved with smoother deposits covered with oxides. Sub-micron electroless rhenium coatings were successfully achieved using spent rhenium electrolytes without additional agents.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Physics, Applied
Yechao Ling, Yong Hu, Xiaodan Chi, Jiawei Chen, Haobo Wang, Ben Niu, Di Wu, Mingxiang Xu, Zhida Han, Jun Du, Qingyu Xu
Summary: Heusler alloys exhibit anisotropic magnetostructural transitions under epitaxial strain, showing different magnetic behaviors in different orientations. This study demonstrates the influence of substrate on the magnetic properties of Heusler alloys and provides insights for designing novel magnetic devices.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Optics
Yu-Liang Hong, Gong-Hui Tang, Ru-Wen Peng, Ren-Hao Fan, Zhong-Li Ma, Zheng Wang, Yue Jiang, Le-Di Chen, Mu Wang
Summary: This research constructs THz photonic topological insulators and experimentally demonstrates robust, topologically protected valley transport in THz photonic crystals. It also shows the emergence of valley-polarized topological edge states and their robustness against bending and defects.
Article
Chemistry, Physical
Jin Lei, Song Sun, Yuchen Li, Ping Xu, Chang Liu, Shaozhong Chang, Genglai Yang, Shuang Chen, Wei Fa, Di Wu, Ai-Dong Li
Summary: Researchers have constructed an organic-inorganic hybrid resistive random-access memory using a nanoporous zinc-based hydroquinone (Zn-HQ) thin film. The Pt/Zn-HQ/Ag sandwich structure was used for the device. The nanoporous Zn-HQ thin film, fabricated through one-step molecular layer deposition, enables lower operation voltages, higher on/off ratio, multilevel storage capability, and excellent endurance/retention properties.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Multidisciplinary Sciences
Bo Xiong, Yu Liu, Yihao Xu, Lin Deng, Chao-Wei Chen, Jia-Nan Wang, Ruwen Peng, Yun Lai, Yongmin Liu, Mu Wang
Summary: By introducing engineered noise to the precise solution of Jones matrix elements, we have surpassed the fundamental limit of polarization multiplexing capacity of metasurfaces. Through experiments, we have achieved up to 11 independent holographic images using a single metasurface illuminated by visible light with different polarizations, which is the highest reported capacity for polarization multiplexing. With the combination of position multiplexing, the metasurface is capable of generating 36 distinct images, forming a holographic keyboard pattern. This discovery opens up new possibilities for high-capacity optical display, information encryption, and data storage.
Article
Physics, Applied
Zhijie Liu, Xinyu Wang, Xingyue Ma, Yurong Yang, Di Wu
Summary: We investigate the doping effects on the ferroelectric properties of Sc-doped AlN and B-doped AlN using first-principles methods. Our results show that the energy barrier against polarization switching decreases with increasing doping concentration, leading to the emergence of ferroelectricity in doped AlN. However, when the doping concentration exceeds a critical value, the ferroelectric phase transforms into paraelectric phases, making it ineffective to reduce coercivity by increasing doping concentration. Furthermore, different nonpolar structures appear in the ferroelectric switching pathway, resulting in different switching features in doped AlN.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Chao-Wei Chen, Le-Di Chen, Cheng-Yao Li, Xiang-Yu Wu, Qing Cai, Ren-Hao Fan, Dong-Xiang Qi, Ru-Wen Peng, Mu Wang
Summary: In this work, the strong coupling of localized surface plasmons (LSPs) and intermolecular vibration mode at THz was observed, resulting in Rabi splitting effect. The measured data confirmed that the splitting originated from the strong coupling between LSPs and molecular vibration mode. This research also demonstrated the potential of implementing molecular concentration sensing based on this strong coupling effect.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Fei Chen, Ren-Hao Fan, Jun-Xuan Chen, Yu Liu, Ben-Qi Hou, Ru-Wen Peng, Mu Wang
Summary: Smith-Purcell radiation (SPR) is the far-field, strong, spike radiation generated by the interaction of the evanes-cent Coulomb field of the moving charged particles and the surrounding medium. In this study, tunable SPR is achieved by moving an electron beam parallel to a 2D metallic nanodisk array. By rotating the nanodisk array, the emission spectrum of SPR splits into two peaks with different wavelengths, which can be tuned by increasing the tuning angle.
Article
Physics, Multidisciplinary
Haoying Sun, Jiahui Gu, Yongqiang Li, Tula R. Paudel, Di Liu, Jierong Wang, Yipeng Zang, Chengyi Gu, Jiangfeng Yang, Wenjie Sun, Zhengbin Gu, Evgeny Y. Tsymbal, Junming Liu, Houbing Huang, Di Wu, Yuefeng Nie
Summary: By applying uniaxial strain, we achieved pure in-plane polarized ferroelectricity in ultrathin SrTiO3 membranes, which allows for the investigation of ferroelectric size effects without the interference of the depolarization field. Our study reveals that the stability of ferroelectricity is influenced by the thickness-dependent dipole-dipole interactions within the transverse Ising model.
PHYSICAL REVIEW LETTERS
(2023)
Review
Physics, Applied
Mohammad Yazdani-Asrami, Wenjuan Song, Antonio Morandi, Giovanni De Carne, Joao Murta-Pina, Anabela Pronto, Roberto Oliveira, Francesco Grilli, Enric Pardo, Michael Parizh, Boyang Shen, Tim Coombs, Tiina Salmi, Di Wu, Eric Coatanea, Dominic A. Moseley, Rodney A. Badcock, Mengjie Zhang, Vittorio Marinozzi, Nhan Tran, Maciej Wielgosz, Andrzej Skoczen, Dimitrios Tzelepis, Sakis Meliopoulos, Nuno Vilhena, Guilherme Sotelo, Zhenan Jiang, Veit Grosse, Tommaso Bagni, Diego Mauro, Carmine Senatore, Alexey Mankevich, Vadim Amelichev, Sergey Samoilenkov, Tiem Leong Yoon, Yao Wang, Renato P. Camata, Cheng-Chien Chen, Ana Maria Madureira, Ajith Abraham
Summary: This paper presents a roadmap for applying AI techniques and big data (BD) in various aspects of superconducting applications, such as modelling, design, monitoring, manufacturing, and operation. Short articles are provided to outline potential applications and solutions, aiming to assist researchers, engineers, and manufacturers in understanding the feasibility of using AI and BD techniques to tackle challenges in superconductivity. These potential futuristic routes and their related materials/technologies are considered for a time frame of 10-20 years.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Applied
Yajie Han, Zhijie Liu, Zhiyu Liu, Hongying Chen, Pengxiang Hou, Jiayi Li, Yuqi Wang, Yu Deng, Yurong Yang, Di Wu
Summary: We have deposited BMN-modified BFO thin films on (001)-oriented SrTiO3 substrates buffered with La2/3Sr1/3MnO3 electrodes and observed a large remanent polarization of 116.8 mu C cm-2. Experimental analyses and first-principles calculations show that the inclusion of 10 mol % BMN increases both the intrinsic and extrinsic contributions, resulting in a doubled polarization. Compared to rhombohedral BFO films, the epitaxial BFO-BMN films exhibit a more tetragonal-like structure and a unique rotated twinning-domain structure, enhancing the out-of-plane polarization.
PHYSICAL REVIEW APPLIED
(2023)
Article
Physics, Multidisciplinary
Yao Li, Pengxiang Hou, Zhongnan Xi, Yeming Xu, Yiren Liu, Hao Tian, Jiayi Li, Yurong Yang, Yu Deng, Di Wu
Summary: Charge transfer in perovskite oxide heterostructures can disrupt the delicate balance among charge, spin, orbital, and lattice order at the interface, resulting in exotic phenomena not seen in bulk materials. The authors observed opposite charge transfer directions in two 3d/5d perovskite oxide heterostructures (SrIrO3/LaNiO3 and SrIrO3/NdNiO3), investigated the resulting interfacial orbital and lattice reconstructions, and discussed their effects on transport and magnetic characteristics.
COMMUNICATIONS PHYSICS
(2023)
Article
Physics, Applied
Zhongnan Xi, Yuqi Wang, Yang Wu, Pengxiang Hou, Peijie Jiao, Yu Deng, Yurong Yang, Di Wu
Summary: We reported an unusual thickness dependence of perpendicular magnetic anisotropy (PMA) in epitaxially deposited spinel NiCo2O4 (NCO) films on MgAl2O4 (001) single crystalline substrates, which is stronger in thinner films. The effective PMA field increases from about 3 T in 23.0 nm-thick films to about 7 T in 4.5 nm-thick films. X-ray absorption spectra reveal an inhomogeneous distribution of Co2+ cations along the film's normal, with a higher concentration near the film/substrate interface. X-ray linear dichroism spectra indicate that the PMA in NCO films is associated with the x(2)-y(2) orbital of Co cations at the tetrahedral sites. This work demonstrates the potential of ultrathin NCO films in all-oxide spintronic devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Xin-Yue Zhang, Qiang Ren, Chen Wang, Lin Zhu, Wen-Juan Ding, Yan-Qiang Cao, Wei-Ming Li, Di Wu, Ai-Dong Li
Summary: In this study, SnO2, ZnO thin film, and SnO2/ZnO composite thin film hydrogen sensors were fabricated using atomic layer deposition (ALD). The effects of ALD cycles and heat treatment temperatures on the sensing properties were investigated. The SnO2/ZnO composite film sensor exhibited the best hydrogen-sensing performance, attributed to the synergistic effect of the SnO2-ZnO heterojunction and oxygen vacancies in the SnO2 film. ALD may be a feasible strategy for constructing highly sensitive hydrogen sensors based on Si for micro-electromechanical system applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jin Lei, Song Sun, Yuchen Li, Ping Xu, Chang Liu, Shaozhong Chang, Genglai Yang, Shuang Chen, Wei Fa, Di Wu, Ai-Dong Li
Summary: A resistive random-access memory based on a nanoporous zinc-based hydroquinone thin film was created with a Pt/ZnHQ/Ag sandwich structure. These devices exhibit electroforming-free bipolar resistive switching characteristic with lower operation voltages and higher on/off ratio above 10(2). The nanoporous hybrid devices also show multilevel storage capability and excellent endurance/retention properties. The connection and disconnection of Ag conductive filaments in the nanoporous Zn-HQ thin film follow the electrochemical metallization mechanism, which is facilitated by the existence of nanopores.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Xingyue Ma, Yurong Yang, L. Bellaiche, Di Wu
Summary: The study found that for ferroelectric PST, the electrocaloric coefficient reaches its maximum at a critical electric field for any specific temperature above the Curie temperature, which is exactly the threshold for polar nanoregions to propagate throughout the sample through percolation. This percolation-induced maximal ECE occurs for all degrees of chemical ordering, suggesting a novel mechanism for improving ECE.
