Article
Materials Science, Multidisciplinary
Qian Li, Jiawei Zhang, Jin Liu, Yi Tian, Wenjia Liang, Linpeng Zheng, Li Zhou, Duanwei He
Summary: The graphitization behavior of diamond particles under high pressure and high temperature conditions was studied. It was found that diamond particles were more prone to graphitization under non-hydrostatic compression when heated, and mixing the particle sizes could significantly reduce graphitization.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Geosciences, Multidisciplinary
Hong Liu, Lingling Wang, Shuchen Li, Yaochun Yang, Hua Tian, Fengxia Sun, Chaowen Xu, Lei Liu, Yi Li, Yueju Cui, Ying Li, Jijun Zhao
Summary: This study reports helium incorporation and diffusion mechanism in quartz and coesite, revealing anisotropic diffusion of helium in both minerals and increased activation energies under high pressure. Helium cannot be quantitatively retained in silica at typical Earth surface temperatures, which has implications for the discussion of mantle evolution and recognition of thermal histories of ultra-high pressure metamorphic terranes.
GEOSCIENCE FRONTIERS
(2021)
Article
Multidisciplinary Sciences
E. B. Elkenany, O. A. Alfrnwani, M. Sallah
Summary: In this study, the electronic, optical, and elastic characteristics of the GaxIn1 - xPySbzAs1 - y - z alloy lattice matched to the GaSb substrate were calculated using a pseudo-potential formalism based on the virtual crystal approximation. The sensitivity of these properties to pressure was considered and the results were compared with experimental evidence. The findings suggest that the pentanary GaxIn1 - xPySbzAs1 - y - z alloy under high pressure could enable novel device applications.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Applied
Jiang Peng, Chuchu Han, Siqi Li, Xiumian Cao, Jiakun Bai, Junfei Li, Ying Ren, Yifan Wang, Jinnan Wu, Junhui Jia
Summary: In this study, a mechanically tunable flexible fluorochromic elastic organic single crystal was prepared, showing reversible color changes under bending and high pressure. The fluorescence emission wavelengths of different crystal surfaces also exhibited distinct responses to bending. Theoretical calculations further explained the reversible changes in fluorescence emission and the important role of intermolecular interactions in the bending-induced fluorochromism. This work provides new insights into the preparation of multi-faceted bending fluorochromism flexible crystals.
Article
Physics, Condensed Matter
Zeyad Abdo Ahmed Rashed Almaghbash, Omar Arbouche
Summary: This theoretical study investigates the elastic, piezoelectric and dielectric properties of BeO in wurtzite and zinc blende structures under hydrostatic pressure, utilizing DFT combined with DFPT. The results show that the crystal cell parameters and volume decrease with pressure, while elastic constants increase, making the structures stiffer. The piezoelectric properties of BeO improve under pressure, with potential applications in device optimization.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Physics, Applied
G. I. Kanel, G. V. Garkushin, A. S. Savinykh, S. V. Razorenov, I. V. Paramonova, E. B. Zaretsky
Summary: This study investigated the evolution of shock compressive pulses and dynamic tensile (spall) strength in pure [100]-oriented molybdenum single crystals through a series of planar impact tests. The results showed that pre-straining reduced the molybdenum Hugoniot elastic limit while increasing the dynamic tensile (spall) strength. The spall fracture was found to be brittle with a weak dependence on the tensile strain rate.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Ajoy Maji, Yitzhak Rabin
Summary: By introducing a simple network model, the deformation dynamics and statistical properties of pressure-stabilized active elastic shells can be studied. The pressure-induced stretching of the network introduces coupling between local and global behavior, leading to contractions of the network and fluctuations of its surface area.
Article
Materials Science, Ceramics
Qingyi Feng, Hongxiang Deng, Biyi Wang, Bo li, Xia Xiang, Li Li, Bo Zhong, Sean Li, Xiaotao Zu
Summary: In this paper, the effect of gamma irradiation on the microstructure and physical performances of porous silica is investigated. The study shows that gamma-ray irradiation modifies the microstructure of porous silica and induces defects. The mechanical, thermal, and optical performances of porous silica are all degraded by gamma-ray irradiation. This work is valuable for understanding the degradation mechanism of silicate materials under gamma radiation and developing gamma-ray irradiation protection technology.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Tor Sewring, Marjolein Dijkstra
Summary: Using Onsager-Straley's theory, this study investigates the cholesteric pitch of cellulose nanocrystal (CNC) suspensions. The research reveals that the twisting of chiral bundles significantly affects the helical twisting of the cholesteric phase. Moreover, the average particle length and length polydispersity have a substantial impact on strongly twisted bundles but minimal effects on weakly twisted ones.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Engineering, Petroleum
Siyu Wang, Maojin Tan, Haiyan Wu, Yongjie Li, Guanbao Xie, Lingtan Zhang
Summary: This study accurately evaluates the acoustic properties of hot-dry rock (HDR) using digital rock physics (DRP) and provides a new approach to studying rock physics properties at high temperatures, as well as a microscopic interpretation for geothermal fracturing development.
Article
Materials Science, Ceramics
Mingyang Tang, Liqing Hu, Yue Wu, Yike Wang, Xin Liu, Xiaodan Ren, Shuguang Zheng, Sanhong Wang, Zhuo Xu, Liwei Geng, Yongke Yan
Summary: This study investigates the electromechanical properties of [001]-textured Mn-PMN-PZT ceramics under high pressure. The dielectric constant of textured ceramics increases first and then decreases as pressure increases. The method of direct calculation and admittance fitting can obtain similar results, but the admittance fitting method provides more accurate results at high pressure.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Qingyi Feng, Hongxiang Deng, Biyi Wang, Bo Li, Xia Xiang, Li Li, Xiaodong Yuan, Wanguo Zheng, Hongdong Yang, Sean Li, Xiaotao Zu
Summary: In this paper, the neutron irradiation effect on porous silica under 14 MeV neutron irradiation is investigated using molecular dynamics and density-functional theory-based methods. It is found that neutron irradiation elongates the Si-O bond distance, reduces the Si-O-Si bond angle, coordination number distribution, and increases Si3+ and non-bridging oxygen defects. The mechanical properties such as bulk modulus, shear modulus, and Young's modulus are all reduced, while the optica properties such as light transmittance and optical absorption coefficient are negatively affected. Additionally, it is observed that high-porosity porous silica is more influenced by neutron irradiation due to the higher defect percentage.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Physics, Condensed Matter
Shilpa Kapoor, Sadhna Singh
Summary: In this study, the mechanical properties of lithium halides under high pressure and high temperature were investigated using a relativistic interaction potential model. The model considered various interactions such as coulomb interaction, three body interaction, electronic polarizability, and short range overlap repulsive interactions up to next nearest neighbour, taking into account temperature effects. The calculated elastic moduli, Pugh's ratio, and Cauchy parameter were found to be consistent with experimental and theoretical data.
SOLID STATE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yu-Tao Shu, Xiu-Lu Zhang, Jin-Ju Bian, Zhen-Wei Niu, Mei Tang
Summary: The study found that adding Ni to Fe can have an impact on the structure and elasticity of hexagonal close-packed Fe-Ni alloys, particularly affecting the elastic constant C-44. Elastic moduli and wave velocities from disordered structures are slightly higher than those from ordered structures.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Yiyi Yang, Ben Niu, Yixuan Ma, Xiao Tian, Tao Hua
Summary: This study fabricates a pressure exerting and sensing fabric by interweaving yarn sensor into a woven fabric. The effects of fabric structure and operation mode on the pressure and electromechanical properties are evaluated. The fabric demonstrates excellent pressure sensing performance with good sensitivity, low hysteresis error, and high stability over pressing cycles.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Hyukjoon Kwon, Motoyuki Shiga, Hajime Kimizuka, Takuji Oda
Summary: The diffusion of hydrogen in metals is difficult to accurately measure due to surface and trapping effects, resulting in large deviations in reported experimental data. Computational studies have proposed atomistic simulation methods, but their accuracy remains questionable. This study used machine-learning moment tensor potentials with the accuracy of density functional theory to estimate the diffusivity of hydrogen in three bcc metals. The calculations showed excellent agreement with experimental data in the appropriate temperature range.
Review
Chemistry, Multidisciplinary
Yanhao Dong, Ju Li
Summary: Recent progress has been made in high-energy-density oxide cathodes for lithium-ion batteries, but cycling under extreme conditions can lead to various forms of degradation that shorten battery life and cause safety issues. Understanding the underlying mechanisms of these degradations is critical for developing mitigation strategies. This systematic overview provides insights into the functions, instabilities, and materials behaviors of oxide cathodes, including unusual anion and cation mobilities and extensive lattice reconstructions. These insights are important for understanding self-healing phenomena and for designing and mitigating degradation in cathodes for high-performance energy storage.
Article
Chemistry, Physical
Longchao Huang, Dengke Chen, Degang Xie, Suzhi Li, Yin Zhang, Ting Zhu, Dierk Raabe, En Ma, Ju Li, Zhiwei Shan
Summary: Hydrogen embrittlement is a concern for using high-strength steels in load-bearing applications. Through the study of individual screw dislocations in alpha-iron, it has been found that hydrogen enhances the motion of screw dislocations, with the critical stress for initiating dislocation motion being lower in a hydrogen atmosphere compared to a vacuum environment. Moreover, cyclic loading and unloading helps to remove trapped hydrogen, allowing the dislocation to regain its original behavior.
Article
Physics, Multidisciplinary
Haowei Xu, Guoqing Wang, Changhao Li, Hua Wang, Hao Tang, Ariel Rebekah Barr, Paola Cappellaro, Ju Li
Summary: The initialization of nuclear spin to its ground state is challenging due to its small energy scale compared with thermal energy, even at cryogenic temperature. In this Letter, an optonuclear quadrupolar effect is proposed, where two-color optical photons can efficiently interact with nuclear spins. Leveraging such an optical interface, nuclear magnons, the collective excitations of nuclear spin ensemble, can be cooled down optically, which could facilitate the application of nuclear spins in quantum information science.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Hao Tang, Boning Li, Guoqing Wang, Haowei Xu, Changhao Li, Ariel Barr, Paola Cappellaro, Ju Li
Summary: This work presents a communication-efficient quantum algorithm for solving the least-square fitting and softmax regression problems in distributed machine learning. Our algorithm achieves a communication complexity of O(log2(N)/e), providing a communication advantage compared to classical and other quantum methods. The quantum bipartite correlator algorithm used in this work can be further applied to other information processing tasks.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Burcak Boztemur, Mubashir Mansoor, Faruk Kaya, Mantao Huang, Emre Tekoglu, M. Lutfi Ovecoglu, Ju Li, Duygu Agaogullari
Summary: By strain engineering, NdB6 can be made highly ductile, contrary to the belief that borides are always brittle. This study investigates the structural and mechanical properties of NdB6 and successfully synthesizes superplastic nanostructured NdB6 ceramic powders.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Energy & Fuels
Moonsu Yoon, Yanhao Dong, Yimeng Huang, Baoming Wang, Junghwa Kim, Jin-Sung Park, Jaeseong Hwang, Jaehyun Park, Seok Ju Kang, Jaephil Cho, Ju Li
Summary: The researchers propose a new mechanochemical activation process that allows the synthesis of coarse single-crystal cathodes with high phase purity, good electrochemical performance, and scalability. This process is based on interfacial reactive wetting mediated by transient eutectic salts, which deagglomerates the precursors and enables particle coarsening into a single-crystalline morphology. The novel technique offers a facile and scalable solution for the production of high-quality single-crystalline cathode materials.
Article
Materials Science, Multidisciplinary
Rana Hossain, Hajime Kimizuka, Shigenobu Ogata
Summary: MAX phases are a unique class of atomically layered ceramics that deform plastically at room temperature due to highly mobile basal dislocations (BDs). In this study, a machine-learning-based spectral neighbor analysis potential (SNAP) was developed to simulate the edge, screw, and mixed BDs in a Ti3SiC2 MAX phase. The SNAP calculations reveal that the BD core structure exhibits significant asymmetry depending on the position of the weakly bonded Si layer. Undissociated BD cores are centered on Si layers and have lower mobility compared to partial BDs. The findings contribute to a deeper understanding of the atomic-level behavior of BDs and the deformation modes of crystals with layered structures.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Engineering, Manufacturing
Emre Tekoglu, Alexander D. O'Brien, Jian Liu, Baoming Wang, Sina Kavak, Yong Zhang, So Yeon Kim, Shitong Wang, Duygu Agaogullari, Wen Chen, A. John Hart, Ju Li
Summary: In this study, a nickel superalloy metallic matrix composite (Ni-MMC) was additively manufactured using laser powder bed fusion (LPBF). SiC nanowires (2 vol%) were decorated on the surface of Inconel 718 alloy particles, resulting in the in-situ formation of Nb- and Ti-based silicide and carbide nanoparticles during laser melting. The in-situ formed nanoparticles improved the solidification microstructure and mechanical properties of the AM Inconel 718. Heat treatment further enhanced the strength of the composite samples while maintaining good ductility.
ADDITIVE MANUFACTURING
(2023)
Article
Chemistry, Multidisciplinary
Yanhao Dong, Ju Li
Summary: Energy ceramics play important roles in high-temperature fuel/electrolysis cells and oxide batteries, but their stability is challenged by harsh chemical and electrochemical conditions. Understanding degradation mechanisms and developing innovative strategies for degradation mitigation are crucial for practical applications. This study analyzes and provides perspectives on degradation phenomena in different electrochemical devices, and discusses the stability and degradation of key ceramic components.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Min-Kyu Song, Ji-Hoon Kang, Xinyuan Zhang, Wonjae Ji, Alon Ascoli, Ioannis Messaris, Ahmet Samil Demirkol, Bowei Dong, Samarth Aggarwal, Weier Wan, Seok-Man Hong, Suma George Cardwell, Irem Boybat, Jae-sun Seo, Jang-Sik Lee, Mario Lanza, Hanwool Yeon, Murat Onen, Ju Li, Bilge Yildiz, Jesus A. del Alamo, Seyoung Kim, Shinhyun Choi, Gianluca Milano, Carlo Ricciardi, Lambert Alff, Yang Chai, Zhongrui Wang, Harish Bhaskaran, Mark C. Hersam, Dmitri Strukov, H. -S. Philip Wong, Ilia Valov, Bin Gao, Huaqiang Wu, Ronald Tetzlaff, Abu Sebastian, Wei Lu, Leon Chua, J. Joshua Yang, Jeehwan Kim
Summary: Memristive technology, with oxide-based resistive switches as memristors, has gained significant attention due to its biomimetic memory properties and potential improvement in power consumption. This review provides a comprehensive overview of recent advances in memristive technology, including devices, theory, algorithms, architectures, and systems. It also discusses research directions for applications in AI hardware accelerators, in-sensor computing, and probabilistic computing. Furthermore, it offers a forward-looking perspective, outlining challenges and opportunities for further research and innovation in this field.
Article
Materials Science, Multidisciplinary
Degang Xie, Rongrong Zhang, Xiaohan Dai, Zhiyu Nie, Xinyao Wang, En Ma, Ju Li, Zhiwei Shan
Summary: Under elevated temperature and low strain rate, the compression test with self-supported aluminum pillars may not conserve the local mass/volume of the sample. Plastic flow can occur with continuous shortening while maintaining a constant overall shape. This non-conservation is due to interface diffusion between the metal and the native oxide layer, allowing mass relocation and providing large continuous plastic strain.
Article
Materials Science, Multidisciplinary
Qing-Jie Li, Mahmut Nedim Cinbiz, Yin Zhang, Qi He, Geoffrey Beausoleil, Ju Li
Summary: Modeling the full-range deformation behaviors of materials under complex loading and materials conditions is a significant challenge. We propose a deep learning framework that can model high-dimensional stress-strain data and complex loading histories with robustness and universal capability. Various encoder architectures were evaluated and achieved excellent test results, providing a robust alternative to empirical/semi-empirical models for constitutive relations (CRs) modeling.
Article
Materials Science, Multidisciplinary
Hongbing Yang, Baoming Wang, Hong Zhang, Bing Shen, Yuanyuan Li, Ming Wang, Jianjun Wang, Wensheng Gao, Yueming Kang, Lu Li, Yanhao Dong, Jiangong Li, Ju Li
Summary: In this study, we report the gradual coarsening of sub-10 nm corundum nanoparticles at room temperature, indicating active surface diffusion at a surprisingly low temperature. Prolific surface diffusion is confirmed by in-situ transmission electron microscopy mechanical deformation, demonstrating high-strain-rate Coble pseudoelasticity. Additionally, anomalously small activation energy and growth stagnation are found in high-temperature coarsening experiments, suggesting additional chemical driving forces beyond physical capillarity.
Article
Nanoscience & Nanotechnology
Zhichu Ren, Zekun Ren, Zhen Zhang, Tonio Buonassisi, Ju Li
Summary: To apply automated experiments and artificial intelligence systems in materials research, it is necessary to ensure their stability, ability to handle cognitive and random errors, and incorporate reproducibility, reconfigurability, and interoperability in autonomous lab design.
NATURE REVIEWS MATERIALS
(2023)