Article
Chemistry, Physical
Liliang Shao, Lin Xue, Qianqian Wang, Kaili Ma, Jindu Huang, Baolong Shen
Summary: In this study, the glass-forming ability of DyCoAl bulk metallic glass was improved by microalloying with Si element. The addition of Si affected the crystallization behavior of the BMG, changing the nucleation process and the growth rate of crystalline particles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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
Materials Science, Ceramics
Mehdi Malekan, Reza Rashidi, Saeed G. Shabestari, Juergen Eckert
Summary: In this study, the effect of different yttrium doping levels on the glass-forming ability of copper-zirconium-aluminum-based metallic glasses was investigated from thermodynamic and kinetic perspectives. The amorphous structure of the alloys was confirmed using various techniques, and the correlation between the forming ability and thermodynamics/kinetics factors was established through the analysis of thermal characteristics. The results showed that 2% yttrium doping significantly improved the glass-forming ability of the metallic glasses. Yttrium enhances the forming ability by promoting a more densely packed atomic configuration and scavenging oxygen as an undesirable element.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Ceramics
Ting Zhang, Zhilin Long, Li Peng, Zhuang Li
Summary: In this paper, a convolutional neural network (CNN) model was used to investigate the glass forming ability (GFA) of bulk metallic glasses (BMGs). By training and testing with a large number of alloy compositions, the study shows that machine learning methods have great potential in guiding the design of new BMG materials.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Jie Xiong, San-Qiang Shi, Tong-Yi Zhang
Summary: This study successfully classified and predicted different levels of GFA in BMG materials using feature selection and machine learning algorithms, providing guidance for novel material design.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Physics, Condensed Matter
Zhu Li, Zhang Xia, Wang Hongying, Cai Pengfei, Mahander Pandey
Summary: The study investigated the effects of Ni microalloying on the crystallization kinetics of Fe(CoNi)PB BMG, showing that Ni addition increased thermal stability and glass forming ability. Higher annealing temperatures intensified exothermic peaks and reduced incubation period for crystallization. Ni addition resulted in slower crystallization compared to Ni-free samples.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Ceramics
Y. Tan, Y. W. Wang, X. W. Cheng, Q. Fu, Z. H. Xin, Z. Q. Xu, H. W. Cheng
Summary: The study found that appropriate Al substitution can improve the glass-forming ability, strength, and plasticity of amorphous alloys, but fracture strength decreases and no dynamic compression plasticity is observed during dynamic loading.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Liqiao Yue, Qijing Sun, Yihao Wang, Yin Wang, Rongjie Xue, Xia Li, Gongji Yang, Jiaojiao Yi
Summary: The glass-forming ability and thermal stability of (Zr72.6Al10Fe17.5)(100-x)Si-x alloys were studied with different Si additions, showing optimal values at x = 0.2 before decreasing. The effects of Si addition on the crystallization products and behavior of the alloys were found to be significantly different.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Li Peng, Zhilin Long, Mingshengzi Zhao
Summary: This study proposes a random forest regression model based on the metal alloy composition dataset to predict the glass forming ability of bulk metallic glasses. By screening feature parameters and optimizing hyperparameters, the accuracy of the model has been improved, revealing the importance of characteristic temperatures and topological structure parameters in describing the formation of alloy glasses.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Review
Materials Science, Multidisciplinary
Cheng Zhang, Di Ouyang, Simon Pauly, Lin Liu
Summary: Bulk metallic glasses (BMGs) as metallic materials without long-range order have attracted significant attention from academia and industry in the past three decades. The emerging 3D printing technology provides a viable route to overcome the challenges inherent in conventional processing routes and expand the applications of BMGs.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2021)
Article
Chemistry, Physical
S. A. Uporov, R. E. Ryltsev, V. A. Bykov, N. S. Uporova, S. Kh Estemirova, N. M. Chtchelkatchev
Summary: Magnetic cooling is a promising eco-friendly technology that requires the search for novel functional materials. Gd-based metallic glasses show potential as solid-state refrigerants, but their magnetic properties can be improved. Through element substitution in the alloy components, it is possible to enhance glass-forming ability and overall performance of the materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Mehdi Malekan, Reza Rashidi, Mansoor Bozorg, Nick Birbilis
Summary: The effect of yttrium (Y) on the glass-forming ability (GFA), mechanical properties and corrosion of (Cu50Z-r43Al7)100-xYx alloys was studied. The addition of Y improved the GFA of Cu50Zr43Al7 alloy, with a GFA of 15 mm obtained for (Cu50Zr43Al7)98Y2. The bulk metallic glasses (BMGs) exhibited limited plastic strain but achieved high compressive fracture strength and Young's modulus. The corrosion resistance of the BMGs was improved by the addition of Y.
Article
Materials Science, Multidisciplinary
Guannan Liu, Sungwoo Sohn, Sebastian A. Kube, Arindam Raj, Andrew Mertz, Aya Nawano, Anna Gilbert, Mark D. Shattuck, Corey S. O'Hern, Jan Schroers
Summary: Machine learning shows potential in addressing complex materials science problems, but physical insights are necessary to develop accurate and predictable models.
Article
Materials Science, Ceramics
D. L. Ouyang, Y. H. Yan, S. S. Chen, D. Huang, Z. R. Wang, X. Cui, Q. Hu, S. Guo
Summary: In this study, a simple method was used to quantify the castability and glass-forming ability (GFA) of two SIM card slots with different designs, as well as at different casting temperatures. It was found that the Zr55Cu30Ni5Al10 (Zr55) alloy has a wider optimal casting temperature range compared to the Zr52.5Cu25Ni9.5Al7Ti6 (Zr52.5) alloy, indicating better GFA of Zr55. However, within the optimal casting temperature range, the castability of Zr52.5 was significantly better than that of Zr55 due to its lower melting point, poorer wettability to the copper mold, and higher optimal casting temperature. These findings provide guidance for the production of Zr-based bulk metallic glass components.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Review
Materials Science, Multidisciplinary
Baran Sarac, Juergen Eckert
Summary: This review provides an overview of the potential of bulk metallic glasses (BMGs) as net-shaping materials, their thermal processing capability, micro-/nano-structure, deformation behavior, and flow kinetics. It also discusses the variation of properties in the supercooled liquid region, high temperature deformation modeling, and applications of thermally-formed BMGs in various fields.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Computer Science, Artificial Intelligence
Zhiqiang Pu, Huimu Wang, Zhen Liu, Jianqiang Yi, Shiguang Wu
Summary: In this article, a novel method called AERL is proposed to address complex interaction and communication issues in multi agent cooperation. The method utilizes attention mechanism and parameter sharing to achieve effective and robust performance, as demonstrated in simulation experiments in three representative scenarios.
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
(2023)
Article
Public, Environmental & Occupational Health
Zheng Xu, Ru Liu, Liping Guo, Ziyi Gao, Zicheng Gao, Xiaowei Liu, Jieyun Li, Bin Li, Kehu Yang
Summary: This scientometric investigation provides a comprehensive analysis of the development and emerging research trends in bibliotherapy. The study identifies the leading countries and institutions in the field and highlights the hot topics of research, such as depression and anxiety. The findings of this study serve as a valuable reference for researchers in the field of bibliotherapy.
PSYCHOLOGY HEALTH & MEDICINE
(2023)
Article
Automation & Control Systems
Weijia Zheng, YangQuan Chen, Xiaohong Wang, Yong Chen, Meijin Lin
Summary: In this paper, an enhanced fractional order sliding mode control (FOSMC) method is proposed to improve the control performance of fractional order uncertain systems with multiple mis-matched disturbances. The multiple disturbances and uncertainties are estimated by finite-time disturbance observers and a fractional order extended state observer. A fractional order switching law is designed for fast convergence of system states. The proposed method incorporates feedforward compensation, the fractional order switching law, and an auxiliary state for input saturation. Numerical examples and a motor speed control problem are used to demonstrate the effectiveness of the proposed method through performance comparisons with existing control methods.
Article
Engineering, Electrical & Electronic
Fei Shan, Suchang Yoo, Jae-Yun Lee, Han-Lin Zhao, Xiao-Lin Wang, Seong Gon Choi, Heung Gyoon Ryu, Yong Jin Jeong, Sung-Jin Kim
Summary: In this paper, a multi-stacked IZO TFT with exceptional electronic characteristics is prepared, and the plasma treatment is used to improve the performance of the device and optimize the crystal structure and surface smoothness.
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Obstetrics & Gynecology
Jie Dong, Qian Xu, Shuqiang Chen, Hui Lei, Jingjing Wang, Song Yan, Chenxi Qian, Xiaohong Wang
Summary: "Offspring conceived by assisted reproductive technologies (ART) have an increased risk of gestational complications, which are related to placental dysfunction. This study used proteomics and phospho-proteomics to investigate the underlying mechanisms responsible for the changes in ART placentas. The findings suggest that ART leads to altered cell junctions, renin-angiotensin system, amino acid transport, and increased mTOR signaling in mouse placentas."
REPRODUCTIVE SCIENCES
(2023)
Article
Biotechnology & Applied Microbiology
Huiyang Li, Xiaoyu Liang, Youlu Chen, Kaijing Liu, Xue Fu, Chuangnian Zhang, Xiaoli Wang, Jing Yang
Summary: In this study, a wound dressing composed of konjac glucomannan and gallic acid was developed, which could accelerate wound healing by promoting macrophage polarization and reducing reactive oxygen species levels. In vivo experiments showed that it had excellent anti-inflammatory properties.
BIOENGINEERING & TRANSLATIONAL MEDICINE
(2023)
Article
Cardiac & Cardiovascular Systems
Zhifei Xu, Zizheng Gao, Huangxi Fu, Yan Zeng, Ying Jin, Bo Xu, Yuanteng Zhang, Zezheng Pan, Xueqin Chen, Xiaochen Zhang, Xiaohong Wang, Hao Yan, Xiaochun Yang, Bo Yang, Qiaojun He, Peihua Luo
Summary: This study identified a distinct mechanism of trastuzumab-induced cardiac complications through the promotion of PTX3 excretion in vascular endothelial cells, leading to impaired contractility of cardiomyocytes. Inhibition of the EGFR/STAT3 signaling pathway reduced the release of PTX3, thereby blocking the cardiac side effects caused by trastuzumab.
CARDIOVASCULAR RESEARCH
(2023)
Review
Clinical Neurology
Ying Che, Tingting Lu, Tianming Wang, Hairong Zhao, Xulin Song, Qing Zhan, Chengzu Zhang, Haibang Pan, Kehu Yang, Bo Wang
Summary: This study evaluated the effects of head-of-bed elevation on patients with acquired brain injury (ABI). The results showed that elevating the head of the bed by 30 degrees can significantly reduce intracranial pressure (ICP), but did not have statistical differences on cerebral perfusion pressure (CPP) and disability at 90 days. Therefore, head-of-bed elevation of 30 degrees may be an effective noninvasive nursing practice for the prognosis and rehabilitation of ABI patients.
JOURNAL OF NEUROSCIENCE NURSING
(2023)
Review
Sport Sciences
Meng Xu, Chen Tian, Yong Wang, Shanshan Liang, Yiyun Wang, Xiuxia Li, Kehu Yang
Summary: This study conducted an umbrella review to summarize the evidence of associations between Pilates and multiple health outcomes, and evaluated the strength and validity of these associations. It found that Pilates can reduce body mass index and body fat percentage, relieve pain and disability, and improve sleep quality and balance. However, the certainty of the evidence was mostly low, and further high quality randomized controlled trials are needed to support these promising findings.
JOURNAL OF SCIENCE AND MEDICINE IN SPORT
(2023)
Review
Integrative & Complementary Medicine
Meng Xu, Chaoqun Yang, Tao Nian, Chen Tian, Liying Zhou, Yanan Wu, Yanfei Li, Xinxin Deng, Xiuxia Li, Kehu Yang
Summary: This study examines the adverse effects of acupuncture and finds that there are various types of adverse reactions, but the symptoms are mild. However, most of the included studies have low quality, indicating a need for further randomized controlled trials and systematic reviews to comprehensively analyze acupuncture-related adverse events.
Review
Emergency Medicine
Qi Zhou, Wenbo Meng, Yanhan Ren, Qinyuan Li, Marja A. Boermeester, Peter Muli Nthumba, Jennifer Rickard, Bobo Zheng, Hui Liu, Qianling Shi, Siya Zhao, Zijun Wang, Xiao Liu, Zhengxiu Luo, Kehu Yang, Yaolong Chen, Robert G. Sawyer
Summary: This study reviewed the effectiveness of intraoperative peritoneal lavage (IOPL) with saline in patients with intra-abdominal infections (IAIs). The findings suggest that IOPL with saline does not significantly reduce the risk of mortality, intra-abdominal abscess, incisional surgical site infection, postoperative complication, reoperation, and readmission when compared to non-IOPL. Therefore, routine use of IOPL with saline in patients with IAIs is not supported.
WORLD JOURNAL OF EMERGENCY SURGERY
(2023)
Article
Engineering, Environmental
Jiachen Yan, Guohong Liu, Hanle Chen, Song Hu, Xiaohong Wang, Bing Yan, Xiliang Yan
Summary: A comprehensive online database on the toxicity of ionic liquids (ILs) has been developed to aid in the design of environmentally friendly ILs using machine learning. The ILTox database contains manually curated data, including 1183 ILs and over 6700 pieces of toxicity data across different organisms. Machine learning models have been constructed using this database to analyze the relationship between IL structures and toxicities. The database has been used for virtual screening of desired IL properties from a large pool of ILs and has proven to be a valuable resource in understanding IL toxicity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Chemistry, Physical
Yu Lou, Sinan Liu, Jiacheng Ge, Huiqiang Ying, Shu Fu, Wentao Zhang, Weixia Dong, Zhenduo Wu, Xun-Li Wang, Elliot P. Gilbert, Yang Ren, Si Lan
Summary: An anomalous ordering-to-disordering transition in a Zr-Cu-Ag supercooled glass-forming liquid was observed using in situ high-energy x-ray diffraction. Heating the supercooled liquid showed a structural crossover at Tc = 716 K, as indicated by changes in the statistical characteristics of the first sharp diffraction peak. Annealing the supercooled liquid near Tc initially led to relaxation towards a denser and more ordered state. Eventually, the liquid became disordered at a medium-range scale, with a slow densification process.
Article
Chemistry, Multidisciplinary
Caiyan Lai, Bingdong Yan, Run Yuan, Delun Chen, Xiaohong Wang, Mingyu Wang, Heyu He, Jinchun Tu
Summary: In this study, a heterojunction composed of a TiO2 nanosheet and layered Ti3C2 was synthesized. The TiO2/Ti3C2 composites exhibited increased surface area and extended light absorption range, leading to prolonged lifetime of photogenerated carriers. A photoelectrochemical DNA biosensor based on the TiO2/Ti3C2 heterostructure was constructed and comprehensively studied. The sensor displayed stability and sensitivity for DNA detection in the range of 10 nM-10 fM, with a lower detection limit of 6 fM. It provided potential for early diagnosis of various diseases by detecting target DNA.
Article
Engineering, Environmental
Fan Yao, Guangzheng Ye, Weixiao Peng, Guangyi Zhao, Xiaohong Wang, Yuqin Wang, Wenfu Zhu, Yujun Jiao, Haomin Huang, Daiqi Ye
Summary: This study investigates the hydrothermal carbonization (HTC) of glucose and precisely determines the pore structure of the obtained hydrochar by controlling the main factors of the hydrothermal process. The results provide guidance and an effective reference for the pore size adjustment of porous-activated biochar developed for the adsorption of pollutants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Y. Liu, K. Zweiacker, C. Liu, J. T. McKeown, J. M. K. Wiezorek
Summary: The evolution of rapid solidification microstructure and solidification interface velocity of hypereutectic Al-20at.%Cu alloy after laser melting has been studied experimentally. It was found that the formation of microstructure was dominated by eutectic, alpha-cell, and banded morphology grains, and the growth modes changed with increasing interface velocity.
Article
Materials Science, Multidisciplinary
Bharat Gwalani, Julian Escobar, Miao Song, Jonova Thomas, Joshua Silverstein, Andrew Chihpin Chuang, Dileep Singh, Michael P. Brady, Yukinori Yamamoto, Thomas R. Watkins, Arun Devaraj
Summary: Castable alumina forming austenitic alloys exhibit superior creep life and oxidation resistance at high temperatures. This study reveals the mechanism behind the enhanced creep performance of these alloys by suppressing primary carbide formation and offers a promising alloy design strategy for high-temperature applications.
Article
Materials Science, Multidisciplinary
Jian Song, Qi Zhang, Songsong Yao, Kunming Yang, Houyu Ma, Jiamiao Ni, Boan Zhong, Yue Liu, Jian Wang, Tongxiang Fan
Summary: Recent studies have shown that achieving an atomically flat surface for metals can greatly improve their oxidation resistance and enhance their electronic-optical applications. Researchers have explored the use of graphene as a covering layer to achieve atomically flat surfaces. They found that high-temperature deposited graphene on copper surfaces formed mono-atomic steps, while annealed copper and transferred graphene on copper interfaces formed multi-atomic steps.
Article
Materials Science, Multidisciplinary
Jennifer A. Glerum, Jon-Erik Mogonye, David C. Dunand
Summary: Elemental powders of Al, Ti, Sc, and Zr are blended and processed via laser powder-bed fusion to create binary and ternary alloys. The microstructural analysis and mechanical testing show that the addition of Ti results in the formation of primary precipitates, while the addition of Sc and Zr leads to the formation of fine grain bands. The Al-0.25Ti-0.25Zr alloy exhibits comparable strain rates to Al-0.5Zr at low stresses, but significantly higher strain rates at higher stresses during compressive creep testing. Finite element modeling suggests that the connectivity of coarse and fine grain regions is a critical factor affecting the creep resistance of the alloys.
Article
Materials Science, Multidisciplinary
P. Jannotti, B. C. Hornbuckle, J. T. Lloyd, N. Lorenzo, M. Aniska, T. L. Luckenbaugh, A. J. Roberts, A. Giri, K. A. Darling
Summary: This work characterizes the thermo-mechanical behavior of bulk nanocrystalline Cu-Ta alloys under extreme conditions. The experiments reveal that the alloys exhibit unique mechanical properties, behaving differently from conventional nanocrystalline Cu. They do not undergo grain coarsening during extrusion and exhibit behavior similar to coarse-grained Cu.
Article
Materials Science, Multidisciplinary
Yiqing Wei, Jingwei Li, Daliang Zhang, Bin Zhang, Zizhen Zhou, Guang Han, Guoyu Wang, Carmelo Prestipino, Pierric Lemoine, Emmanuel Guilmeau, Xu Lu, Xiaoyuan Zhou
Summary: This study proposes a new strategy to modify microstructure by phase regulation, which can simultaneously enhance carrier mobility and reduce lattice thermal conductivity. The addition of Cu in layered SnSe2 induces a phase transition that leads to increased grain size and reduced stacking fault density, resulting in improved carrier mobility and lower lattice thermal conductivity.
Article
Materials Science, Multidisciplinary
Jia Chen, Zhengyu Zhang, Eitan Hershkovitz, Jonathan Poplawsky, Raja Shekar Bhupal Dandu, Chang-Yu Hung, Wenbo Wang, Yi Yao, Lin Li, Hongliang Xin, Honggyu Kim, Wenjun Cai
Summary: In this study, the structural origin of the pH-dependent repassivation mechanisms in multi-principal element alloys (MPEA) was investigated using surface characterization and computational simulations. It was found that selective oxidation in acidic to neutral solutions leads to enhanced nickel enrichment on the surface, resulting in reduced repassivation capability and corrosion resistance.
Article
Materials Science, Multidisciplinary
X. Y. Xu, C. P. Huang, H. Y. Wang, Y. Z. Li, M. X. Huang
Summary: The limited slip systems of magnesium (Mg) and its alloys hinder their wide applications. By conducting tensile straining experiments, researchers discovered a rate-dependent transition in the dislocation mechanisms of Mg alloys. At high strain rates, glissile dislocations dominate, while easy-glide dislocations dominate at low strain rates. Abundant glissile dislocations do not necessarily improve ductility.
Article
Materials Science, Multidisciplinary
M. S. Szczerba, M. J. Szczerba
Summary: Inverse temperature dependences of the detwinning stress were observed in face-centered cubic deformation twins in Cu-8at.%Al alloy. The detwinning stress increased with temperature when the pi detwinning mode was involved, but decreased when the pi/3 mode was involved. The dual effect of temperature on the detwinning stress was due to the reduction of internal stresses pre-existing within the deformation twins. The complete reduction of internal stresses at about 530 degrees C led to the equivalence of the critical stresses of different detwinning modes and a decrease in the yield stress anisotropy of the twin/matrix structure.
Article
Materials Science, Multidisciplinary
Taowen Dong, Tingting Qin, Wei Zhang, Yaowen Zhang, Zhuoran Feng, Yuxiang Gao, Zhongyu Pan, Zixiang Xia, Yan Wang, Chunming Yang, Peng Wang, Weitao Zheng
Summary: The interaction between the electrode and the electric double layer (EDL) significantly influences the energy storage mechanism. By studying the popular alpha-Fe2O3 electrode and the EDL interaction, we find that the energy storage mechanism of the electrode can be controlled by modulating the EDL.
Article
Materials Science, Multidisciplinary
Matthew R. Barnett, Jun Wang, Sitarama R. Kada, Alban de Vaucorbeil, Andrew Stevenson, Marc Fivel, Peter A. Lynch
Summary: The elastic-plastic transition in magnesium alloy Mg-4.5Zn exhibits bursts of deformation, which are characterized by sudden changes in grain orientation. These bursts occur in a coordinated manner among nearby grains, with the highest burst rate observed at the onset of full plasticity. The most significant burst events are associated with twinning, supported by the observation of twinned structures using electron microscopy. The bursts are often preceded and followed by a stasis in peak movement, indicating a certain "birth size" for twins upon formation and subsequent growth at a later stage.
Article
Materials Science, Multidisciplinary
Vaidehi Menon, Sambit Das, Vikram Gavini, Liang Qi
Summary: Understanding solute segregation thermodynamics is crucial for investigating grain boundary properties. The spectral approach and thermodynamic integration methods can be used to predict solute segregation behavior at grain boundaries and compare with experimental observations, thus aiding in alloy design and performance control.
Article
Materials Science, Multidisciplinary
Feiyu Qin, Lei Hu, Yingcai Zhu, Yuki Sakai, Shogo Kawaguchi, Akihiko Machida, Tetsu Watanuki, Yue-Wen Fang, Jun Sun, Xiangdong Ding, Masaki Azuma
Summary: This study reports on the negative and zero thermal expansion properties of Cd2Re2O7 and Cd1.95Ni0.05Re2O7 materials, along with their ultra-low thermal conductivity. Through investigations of their structures and phonon calculations, the synergistic effect of local structure distortion and soft phonons is revealed as the key to achieving these distinctive properties.
Article
Materials Science, Multidisciplinary
Thomas Beerli, Christian C. Roth, Dirk Mohr
Summary: A novel testing system for miniature specimens is designed to characterize the plastic response of materials for which conventional full-size specimens cannot be extracted. The system has an automated operation process, which reduces the damage to specimens caused by manual handling and improves the stability of the test results. The experiments show that the miniature specimens extracted from stainless steel and aluminum have high reproducibility, and the results are consistent with those of conventional-sized specimens. A correction procedure is provided to consider the influence of surface roughness and heat-affected zone caused by wire EDM.
Article
Materials Science, Multidisciplinary
Rani Mary Joy, Paulius Pobedinskas, Nina Baule, Shengyuan Bai, Daen Jannis, Nicolas Gauquelin, Marie-Amandine Pinault-Thaury, Francois Jomard, Kamatchi Jothiramalingam Sankaran, Rozita Rouzbahani, Fernando Lloret, Derese Desta, Jan D'Haen, Johan Verbeeck, Michael Frank Becker, Ken Haenen
Summary: This study investigates the influence of film microstructure and composition on the Young's modulus and residual stress in nanocrystalline diamond thin films. The results provide insights into the mechanical properties and intrinsic stress sources of these films, and demonstrate the potential for producing high-quality nanocrystalline diamond films under certain conditions.
