Article
Materials Science, Multidisciplinary
Guangya Li, Yang Yang, Boyuan Gou, Jinyu Zhang, Jiao Li, Yaqiang Wang, Lingfei Cao, Gang Liu, Xiangdong Ding, Jun Sun
Summary: By controlling the defects of coherent twin boundaries (CTBs) through Cr segregation at kinks and grain boundaries (GBs), high strength and excellent structural-mechanical stability can be achieved, providing a new perspective for the design of purified Cu alloys.
Article
Materials Science, Multidisciplinary
Gianna M. Valentino, Sisi Xiang, Luoning Ma, Kelvin Y. Xie, Mo-Rigen He, Warren C. Oliver, George M. Pharr, Jessica A. Krogstad, Timothy P. Weihs, Kevin J. Hemker
Summary: Nickel-molybdenum-tungsten (Ni-Mo-W) thin films deposited by sputtering exhibit unique properties due to the fine growth twins formed during deposition. In this study, micropillar compression and microstructural analysis were used to investigate the compressive behavior and deformation mechanisms of nanotwinned Ni84Mo11W5 micropillars. The pillars show Hookean behavior up to compressive strengths of 3-3.5 GPa, with the onset of non-linear plastic flow indicated by discrete strain bursts and localized shear bands. Shear banding at high stresses leads to intense plastic deformation and the formation of twin-free nanocrystalline grains. The specialized plasticity in nanotwinned Ni-Mo-W is highlighted by the absence of detwinning and dislocation glide mechanisms.
Article
Materials Science, Multidisciplinary
Xuesong Xu, Hongsheng Ding, Haitao Huang, He Liang, Hao Guo, Ruirun Chen, Jingjie Guo, Hengzhi Fu
Summary: By means of directional solidification and microalloying, a TiAl alloy with a fine and uniform microstructure and continuous columnar crystals was obtained. The microalloyed high Nb containing TiAl alloy exhibited better creep properties at high temperature and stress conditions.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Sen Xu, Xiaofeng Fan, Changzhi Gu, Weitao Zheng, David J. Singh
Summary: Understanding the effects of heavy ion irradiation on the tensile properties of metals at the nanoscale is crucial for the development of nanomechanical and other nanodevices. This study found that heavy ion irradiation caused gold nanocrystalline films to become less ductile and more prone to fracture, due to the convergence of grain boundaries to the surface crater. However, for porous films with micropores in the grain boundaries, irradiation resulted in film hardening and increased ultimate tensile strength.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Thomas Edward James Edwards, Nadia Rohbeck, Emese Huszar, Keith Thomas, Barbara Putz, Mikhail Nikolayevich Polyakov, Xavier Maeder, Laszlo Pethoe, Johann Michler
Summary: By incorporating less than 1 vol% insoluble tungsten nanoparticles, the ease of formation and high temperature stability of nanotwinned copper is dramatically enhanced, showing promise for more robust microchip interconnects and stronger electric motor components.
Article
Multidisciplinary Sciences
Kelvin Y. Xie, Kavan Hazeli, Neha Dixit, Luoning Ma, K. T. Ramesh, Kevin J. Hemker
Summary: This study investigates the role of deformation rate on twin boundary migration in Mg single crystals, revealing two different mechanisms under quasi-static and plate impact deformation. The findings show that twin boundaries migrate predominantly via shear at modest stresses and rates, while at higher stresses and rates, twin boundary migration is facilitated by local atomic re-arrangement. This rate dependency leads to marked variations in twin variant, size, and number density in Mg.
Article
Chemistry, Multidisciplinary
Haneul Han, Chaerin Lee, Youjung Kim, Jinhyun Lee, Sanghwa Yoon, Bongyoung Yoo
Summary: This study investigates the effect of defects on the self-annealing phenomenon of electroplated copper with a high defect density. It analyzes the grain growth and stress relaxation during self-annealing and explores the abnormal grain growth under different conditions.
FRONTIERS IN CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Fenghui Duan, Yan Lin, Jie Pan, Lei Zhao, Qiang Guo, Di Zhang, Yi Li
Summary: This study reports continuous strengthening in nanotwinned pure Ni with an unprecedented strength of 4.0 GPa achieved at an extremely fine twin thickness of 2.9 nm. The results highlight the important role of secondary nanotwins in sustaining plastic deformation and contribute to the overall high strength of the material.
Article
Materials Science, Multidisciplinary
Yihui Jiang, Xingde Zhang, Pengtao Cai, Pengtao Li, Fei Cao, Fan Gao, Shuhua Liang
Summary: A recently discovered Cu-Hf alloy has shown promise in the fabrication of high-strength and high electrical conductivity materials. However, the precipitation behavior and microstructural evolution during thermo-mechanical processing have not been well understood. This study focused on the crystallography, thermodynamics, and kinetics of precipitation during isothermal aging and the interaction between nano-precipitates and nano-twins during liquid nitrogen temperature rolling in Cu-Hf alloys. The results showed that the isothermal aging precipitation of Cu-Hf alloys involved the formation of supersaturated FCC-Cu, coherent Cu5Hf phase, and incoherent Cu51Hf14 phase. The formation of the Cu5Hf phase was attributed to the lower energy and interfacial free energy of coherent nano-precipitates, resulting in shape changes in the nano-precipitates. Molecular dynamics simulations revealed that the pre-existing nano-precipitates significantly improved the twinning ability of the Cu-Hf alloy, leading to the formation of numerous nano-twin bundles during low-temperature rolling. Finally, a new type of Cu-Hf based alloy with excellent combination of high strength, high electrical conductivity, and high heat-resistance was successfully fabricated using routine processes.
Article
Materials Science, Multidisciplinary
J. Veerababu, G. Sainath, A. Nagesha
Summary: The study reveals that the deformation behavior of a coherent twin boundary under cyclic shear loading differs at different temperatures, with an increase in temperature leading to more sliding of the twin boundary. Additionally, the migration of twins is associated with fluctuating stress, and the presence of multiple parallel twin nanowires can affect the reversibility and migration of the twin boundary.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Carlos Rumbo, Alvise Bianchin, Antonio Mario Locci, Rocio Barros, Sonia Martel Martin, Juan Antonio Tamayo-Ramos
Summary: The aim of this study was to evaluate the toxicological effects of three nanocrystalline metal alloys, and the results showed that nc TiAl was the safest candidate from a toxicological perspective.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Jiahao Li, Kejie Lu, Yi Wang, Yuqi Zhang, Xinkai Ma, Jieming Chen, Yuntian Zhu
Summary: This work investigates the fabrication of nanotwinned Al0.1CoCrFeNi high-entropy alloy (HEA) using cryogenic multi-directional compression (CMC) followed by stress-relief annealing, and demonstrates the enhanced cryogenic tensile properties of the nanotwinned HEA. The introduction of high-density dislocations and hierarchical nanotwins in the HEA samples contributes to the excellent mechanical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Xing-Quan Liu, Zhe Li, Zhen-Jia Peng, Rui-Xun Wang, Zhi-Quan Liu
Summary: The corrosion resistance of electroplated copper in 4 wt% NaOH is improved through nanotwinned microstructure engineering, which inhibits the nucleation and growth of oxide/hydroxide. The presence of highly (111)-preferred grain orientation and high-density coherent twin boundaries on the surface of nanotwinned copper contributes to this enhancement. This study reveals a novel anti-corrosion strategy and has great application potential in industrial electroplating.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
M. Czagany, D. Varanasi, A. Sycheva, D. Janovszky, D. Koncz-Horvath, F. Kristaly, P. Baumli, G. Kaptay
Summary: The Cu/AlN-Al2O3 nano-multilayer was deposited on 42CrMo4 steel samples using magnetron sputtering method, revealing that at high temperatures, Cu nanocrystals coarsen and migrate within the multilayer, even forming micron-sized reservoirs. As the temperature increases, cracks appear in the AlN-Al2O3 layers, causing Cu to be exposed on the surface of the NML.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Acoustics
W. Rodriguez-Cruz, J. C. Torres-Guzman, A. Diaz-de-Anda
Summary: In this study, it is demonstrated analytically and numerically that degenerate states of a beam with free ends tend asymptotically to the thickness-shear mode in the infinitely long beam limit, occurring in the first degeneracy points above the cutoff frequency. The accuracy of the results is validated by comparing them with those obtained using the Finite Element method and plane stress elastodynamics theory. It is also shown that the anti-symmetric states closely resemble the thickness-shear mode but for a finite beam with free ends under flexural vibrations.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Multidisciplinary Sciences
Shengze Cai, He Li, Fuyin Zheng, Fang Kong, Ming Dao, George Em Karniadakis, Subra Suresh
Summary: Understanding blood flow mechanics is crucial for understanding physiological mechanisms and vascular diseases in microcirculation. Conventional methods lack the ability to accurately assess flow fields, while artificial-intelligence velocimetry (AIV) provides a new approach by integrating imaging data with underlying physics to quantify blood flow velocity and stress fields for assessing vascular injury.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Physical
Evgenii Tsymbalov, Zhe Shi, Ming Dao, Subra Suresh, Ju Li, Alexander Shapeev
Summary: The controlled introduction of elastic strains can modulate the physical properties of semiconductor materials, utilizing deep learning algorithms combined with physics calculations to optimize electronic and optical properties. Machine learning frameworks can effectively predict bandgaps and band structures, optimizing strain energy pathways for changes in physical properties of materials.
NPJ COMPUTATIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sheng Yuan Leong, Hong Boon Ong, Hui Min Tay, Fang Kong, Megha Upadya, Lingyan Gong, Ming Dao, Rinkoo Dalan, Han Wei Hou
Summary: Extracellular vesicles are considered as next generation diagnostic biomarkers due to their disease-specific biomolecular cargoes and importance in cell-cell communications. This study presents a microfluidic platform for EV-protein fractionation using size exclusion chromatography. The device shows excellent performance in isolating EVs from biological samples and has been validated for clinical applications.
Article
Multidisciplinary Sciences
Enrui Zhang, Ming Dao, George Em Karniadakis, Subra Suresh
Summary: In this study, a general framework based on physics-informed neural networks is proposed for identifying unknown geometric and material parameters in materials' internal structures and defects. By using a mesh-free method, the geometry of the material is parameterized, and the effectiveness of the method is validated using constitutive models. The framework can be applied to other inverse problems involving unknown material properties and deformable geometries.
Article
Chemistry, Multidisciplinary
Ze Zhao, Jingyu Deng, Hyunhyuk Tae, Mohammed Shahrudin Ibrahim, Subra Suresh, Nam-Joon Cho
Summary: Despite the rise of paperless technologies, paper still remains widely used and the environmental challenges associated with conventional paper manufacturing need to be addressed. This study presents a method for producing reusable and recyclable paper using pollen grains, which allows for high-quality printing and reuse. The use of pollen as a sustainable source of paper has advantages in terms of environmental impact and energy consumption.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Zheng Ao, Hongwei Cai, Zhuhao Wu, Liya Hu, Asael Nunez, Zhuolong Zhou, Hongcheng Liu, Maria Bondesson, Xiongbin Lu, Xin Lu, Ming Dao, Feng Guo
Summary: Researchers have developed an automated high-throughput microfluidic platform to track T cell infiltration and cytotoxicity and evaluate treatment efficacy. By screening a drug library, they identified an epigenetic drug that enhances tumor infiltration and treatment effectiveness.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Yuhao Qiang, Abdoulaye Sissoko, Zixiang L. Liu, Ting Dong, Fuyin Zheng, Fang Kong, John M. Higgins, George E. Karniadakis, Pierre A. Buffet, Subra Suresh, Ming Dao
Summary: This article introduces the clearance of altered red blood cells by the spleen and the mechanisms underlying these processes. By studying sickle cell disease, it is found that the retention and adhesion of red blood cells are faster in blood samples from patients with sickle cell disease compared to healthy individuals. Additionally, under hypoxic conditions, the phagocytosis process of sickled red blood cells is different from non-sickled red blood cells. It is also observed that reoxygenation significantly alleviates RBC retention and leads to rapid unsickling of ingested sickled red blood cells. These findings provide insights into the maintenance of homeostatic balance in the spleen and the potential clinical manifestations in hematologic diseases.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Chemistry, Multidisciplinary
Shou-Yi Chang, Yi-Chung Huang, Shao-Yi Lin, Chia-Ling Lu, Chih Chen, Ming Dao
Summary: The nanoscopic deformation of < 111 > nanotwinned copper nanopillars under different strain rates was investigated using in situ transmission electron microscopy. The study found that the deformation mechanism, including dislocation activity and twin boundary migration, is influenced by strain rates. At higher strain rates, dislocations accumulate in the nanotwinned copper, resulting in significant hardening. At lower strain rates, detwinning occurs and the hardening is reduced. Different deformation mechanisms, such as dislocation activity and twin boundary migration via atom motion, are proposed based on the experimental results.
Article
Biophysics
Guansheng Li, Yuhao Qiang, He Li, Xuejin Li, Ming Dao, George Em Karniadakis
Summary: Erythrophagocytosis is a critical process in the spleen for removing senescent and diseased red blood cells from circulation. However, the biophysical interaction between red blood cells and macrophages in pathological conditions like sickle cell disease has not been well studied. This study combines computational simulations and microfluidic experiments to investigate the adhesion dynamics between red blood cells and macrophages under flow conditions similar to those in the spleen.
BIOPHYSICAL JOURNAL
(2023)
Article
Multidisciplinary Sciences
Mario Carucci, Julien Duez, Joel Tarning, Irene Garcia-Barbazan, Aurelie Fricot-Monsinjon, Abdoulaye Sissoko, Lucie Dumas, Pablo Gamallo, Babette Beher, Pascal Amireault, Michael Dussiot, Ming Dao, Mitchell V. Hull, Case W. McNamara, Camille Roussel, Papa Alioune Ndour, Laura Maria Sanz, Francisco Javier Gamo, Pierre Buffet
Summary: Malaria parasites multiply in red blood cells, but can be eliminated when the cells become stiff. Through screening, two safe drugs were found that can block the transmission of malaria.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Qiaodong Wei, Xiaolong Wang, Ce Zhang, Ming Dao, Xiaobo Gong
Summary: In this study, we investigated the morphological changes and mechanical behavior of red blood cells (RBCs) during aging using an in vitro mechanical fatigue model. We identified three typical shape transformations of RBCs during mechanical fatigue, which are strongly associated with the loss of surface area. Mathematical models were constructed to describe the evolution of surface area and membrane shear modulus, and an ensemble parameter was developed to quantitatively evaluate the aging status of RBCs. This study provides a novel in vitro fatigue model for studying the mechanical behavior of RBCs and a quantitative index for differentiating individual RBCs based on their age and physical properties.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Ting Yang, T. A. Venkatesh, Ming Dao
Summary: In this study, the mechanical responses of materials with graded nanostructured surfaces during fretting sliding are compared to homogeneous materials. The results show that metallic materials with a graded nanostructured surface exhibit superior fretting damage resistance by reducing the plastically deformed surface areas and volumes by more than 80%. By decreasing the friction coefficient, optimal fretting resistance can be achieved in the graded nanostructured material.
Article
Materials Science, Multidisciplinary
Katia Zolotovsky, Swati Varshney, Steffen Reichert, Eric M. Arndt, Ming Dao, Mary C. Boyce, Christine Ortiz
Summary: This text explores how armored fish exoskeletons balance flexibility and protection, revealing through modeling, 3D printing, and experimental testing the mechanical origin of anisotropic bending stiffness in fish scale architectures, providing design guidelines for biomimetics.
COMMUNICATIONS MATERIALS
(2021)
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.
