Article
Materials Science, Multidisciplinary
Chao Li, Jin-Su Baek, Jung-Hyuk Koh
Summary: This study demonstrates that the introduction of CeO2 and Y2O3 can improve the piezoelectric properties and electromechanical coupling coefficient of BCZT ceramics. Additionally, these dopants promote grain growth process, enhancing the overall performance of the material.
Article
Chemistry, Multidisciplinary
Weijie Zheng, Jiaqi Lin, Xinmei Liu, Wenlong Yang, Yuanshuo Li
Summary: The study systematically investigated the effect of co-doping Ce and Sb on the performance of BCZTC ceramics, showing significant improvements in structure, properties, and microstructure. The co-doped ceramics exhibited enhanced grain growth, relative density, and electrical performance, making them promising candidates for lead-free devices.
Article
Materials Science, Ceramics
Sun Wenjing, Junzhan Zhang, Siyu Ge, Peng Shi, Leilei Li, Ying Zhang, Hudie Yuan, Dongyun Gui, Zongmo Shi
Summary: The influence of solid content on the pore morphology and mechanical and piezoelectric properties of porous BCZT ceramics was systematically investigated. The results showed that an increase in solid content led to a decrease in porosity and pore size, an increase in ceramic connectivity, and an increase in compressive strength. The best ferroelectric performance was achieved at a solid content of 30%, while the relative dielectric constant and piezoelectric constant increased with an increase in solid content. At a solid content of 20%, the maximum values of g33 and FOM33 were obtained.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Indrani Coondoo, Joao Vidal, Igor Bdikin, R. Surmenev, Andrei L. Kholkin
Summary: Lead-free multiferroic particulate composites were prepared using solid state reaction method, and their structure, properties, and magnetoelectric coupling effect were investigated. The composites exhibited soft ferromagnetic behavior at room temperature and showed maximum magnetoelectric coupling effect at a certain impurity ratio.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Xiang Tai Guo, Zi Long Yu, Liang Liang Liu, Li Lin Xiang, Ya Xin Sun, Juan Liu
Summary: This paper investigates the evolution of structure and properties of BiFeO3-(Ba0.85Ca0.15)(Ti0.9Hf0.1)O-3 (BFO-BCTH) ceramics. XRD analysis shows the coexistence of rhombohedral R3c phase and pseudocubic (PC) phase in all samples, and the content of PC phase increases with increasing BCTH content. Two dielectric anomalies are observed for all BFO-BCTH samples. The leakage current density significantly decreases with increasing doping BCTH content, and the ferroelectric and piezoelectric properties are enhanced for x = 0.25-0.27 samples. The magnetic properties of the moderately doped ceramics are significantly improved, but the magnetization intensity decreases due to magnetic dilution caused by increased doping content.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Xueliang Duan, Juanjuan Wang, Yuyang He, Pengkang Ma
Summary: In this study, high-dielectric (1 - x)(Bi0.5Na0.5)TiO3-x(Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3 (BNT-BCZT) ceramics were fabricated by combining solid-state sintering technique and two-part synthesis. XRD measurements confirmed the formation of a stable solid solution between BNT and BCZT. The BNT-BCZT ceramics exhibited larger piezoelectric constant, lower remnant polarization, and lower coercive field compared to pure BNT ceramics.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Zehuan Wang, Denghao Ma, Yunhan Wang, Yan Xie, Zhonghui Yu, Jin Cheng, Li Li, Liang Sun, Shuxiang Dong, Hong Wang
Summary: A design strategy inspired by Kirigami/Origami was proposed for the preparation of curved and porous piezoelectric ceramics with specific shapes. The ceramics produced using this strategy exhibit a high piezoelectric constant and are well-suited for use in the human body to detect pulse signals. This strategy provides a new approach for the large-scale and low-cost production of complex-shaped ceramics.
Article
Chemistry, Physical
S. Satapathy, Golla Prudhvi, Azam Ali Khan, Pratik Deshmukh, Anju Ahlawat, K. R. S. Preethi Meher, A. K. Karnal
Summary: MFO/BCZT ceramic composite exhibits multiferroic and magnetoelectric coupling properties with proper surface interaction, showing potential for device applications at room temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Manufacturing
Zi-Xuan He, Xue-Tian Gong, Chun-Lei Liu, Quan-Pei Du, Jia-Min Wu, Guang- Zu Zhang, Yu-Sheng Shi
Summary: In this study, BCZT ceramics were successfully prepared using vat photopolymerization, enabling the fabrication of devices with complex structures and high resolution. The results showed that increasing the sintering temperature improved the phase composition and electric properties of the ceramics.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
A. Moure, P. Val-Gomez, A. del Campo, J. F. Fernandez, F. Rubio-Marcos
Summary: In this study, the stress dynamics and its temperature dependence arising from the Orthorhombic-Tetragonal Polymorphic Phase Boundary (PPB) in lead-free potassium sodium niobate (KNN)-based ceramics were investigated. The growth of Orthorhombic phases is limited by the high-temperature tetragonal phase distributions, and two main mechanisms regulate the decrease of stress processes: microstructural effects hinder the formation of non-180° domains, while ferroelectric domain distribution and local structural heterogeneity contribute to the phase transition widening.
MATERIALS & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Yuvasree Purusothaman, Haoyang Leng, Aman Nanda, Ilan Levine, Shashank Priya
Summary: A lead-free piezoelectric ceramic based on (K,Na)NbO3 is textured using NaNbO3 seeds in the (001) direction, resulting in improved electromechanical coefficients at room temperature. The textured composition with 5 wt % NN template exhibits enhanced electromechanical coefficients and is used to fabricate a flexible piezoelectric energy harvester. The textured energy harvester outperforms the random ceramic-based harvester due to its higher figure-of-merit value.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Pan Yang, Lingxia Li, Shihui Yu, Wei Peng, Kangli Xu
Summary: This study investigates the influence of BMT on the microstructure, dielectric properties, and energy storage performance of relaxor ceramics. With the increasing content of BMT, the grain size of the ceramics gradually increases, the dielectric constant decreases, and a high energy storage performance is achieved at x = 0.15.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Fanghui Mou, An Xue, Qibin Liu, Shiqiang Peng, Yuanyu Wang, Enpei Cai, Sifan Wang
Summary: The study found that different doping contents can affect the phase coexistences of lead-free piezoelectric ceramics, with ceramics exhibiting multiphase coexistences showing superior electrical properties, achieving outstanding performance at x = 0.2 mol%.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Myang Hwan Lee, Hae In Choi, Da Jeong Kim, Ji Su Kim, Tae Kwon Song
Summary: Hard piezoelectric properties were investigated in lead-free BiFeO3-BaTiO3 (BF- BT) ceramics. Rhombohedral (R) phase ceramics of (1 - x)BF-xBT (x = 0.20-0.30) were prepared. The x = 0.20 ceramic showed the best hard piezoelectric properties, with the highest Q(m) = 403 and the highest T-C = 607°C. In contrast, the x = 0.30 ceramic showed soft piezoelectric properties, with d(3)(3) = 301 pC/N and k(p) = 0.33, and T-C = 510°C. The BF-BT system in the R-phase-rich region has good hard piezoelectric properties for transducer applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Acoustics
Huabin Yang, Yuanyuan Sun, Huayun Gao, Xinyi Zhou, Hua Tan, Chang Shu, David Salamon, Shibo Guan, Shenggui Chen, Haibo Zhang
Summary: In this study, BF-xBT ceramics were prepared by a solid-state approach, and the effect of BT content on the properties was investigated. The ceramic with a BT content of 0.30 exhibited the highest sensitivity and showed excellent stability under high-temperature conditions.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2022)
Article
Computer Science, Artificial Intelligence
Yilin Guo, Wen Feng Lu, Jerry Ying Hsi Fuh
Summary: This study proposes a semi-supervised deep learning-based framework for manufacturability assessment of metal cellular structures, representing complex structures as 3D binary arrays with efficient voxelization methods. By training a deep learning classifier with only a small amount of experimental data using a semi-supervised learning approach, the framework demonstrates advantages over existing DFAM methods and machine learning models in predicting manufacturability, even for various other complex geometries with limited training data.
JOURNAL OF INTELLIGENT MANUFACTURING
(2021)
Review
Engineering, Biomedical
Niyou Wang, Jerry Ying Hsi Fuh, S. Thameem Dheen, A. Senthil Kumar
Summary: Bone defects and diseases can have severe consequences, but orthopedic implants and scaffolds help in the treatment by promoting bone growth. Metallic and metallic oxide nanoparticles offer unique properties that can enhance orthopedic implants and scaffolds, but their potential toxicity to cells and tissues needs to be carefully considered.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Tsai-Fu Chung, Po-Han Chiu, Cheng-Ling Tai, You-Lin Li, Le-Min Wang, Chih-Yuan Chen, Jien-Wei Yeh, Chien-Nan Hsiao, Da-Zheng Ou, Shing-Hoa Wang, Jer-Ren Yang
Summary: The Mn-free Fe27Co24Ni23Cr26 high-entropy alloy underwent ballistic deformation at room temperature, revealing different microstructural features in various regions, including lamellar annealing nanotwins, complex nanotwin structures, high density of dislocations, and stacking faults. These structures play a crucial role in restricting dislocation movement in the alloy.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Xianyin Duan, Xinyue Chen, Kunpeng Zhu, Tao Long, Shiyang Huang, Fuh Y. H. Jerry
Summary: In the selective laser melting process, temperature and stress distribution evolution have a significant impact on the microstructure, build quality, and mechanical properties of components. Finite element methods are used to simulate and predict the building process to monitor temperature and stress distribution changes in real time. Experimental results suggest that optimizing laser power, scanning speed, and spot diameter parameters can improve the build quality of SLM parts.
Article
Engineering, Manufacturing
Guo Yilin, Jerry Fuh Ying Hsi, Lu Wen Feng
Summary: Additive manufacturing allows for complex geometries in parts, expanding the design space to microarchitecture scale. Optimizing structures within this expanded design space can improve performance. A surrogate model based on 3D convolutional neural networks provides flexibility in predicting material properties of microscale structures.
VIRTUAL AND PHYSICAL PROTOTYPING
(2021)
Article
Engineering, Manufacturing
K. Ren, Y. Chew, N. Liu, Y. F. Zhang, J. Y. H. Fuh, G. J. Bi
Summary: This study introduces a new method combining finite element simulation and machine learning to select a multi-layer laser infill toolpath planning strategy that minimizes localized heat accumulation.
VIRTUAL AND PHYSICAL PROTOTYPING
(2021)
Article
Nanoscience & Nanotechnology
Xue Wang, Liping Zhao, Jerry Ying Hsi Fuh, Heow Pueh Lee
Summary: This paper analyzes the effects of statistical pore characteristics on the mechanical behavior of LPBF processed parts and proposes a micromechanical model to predict the mechanical properties of the materials. The relationship among pore features is studied to gain insights on how the pore details affect the tensile behavior of the parts.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Automation & Control Systems
Kunpeng Zhu, Jerry Ying Hsi Fuh, Xin Lin
Summary: Metal-based additive manufacturing (MAM) processes show great potential in various industrial applications, but defects in the process can greatly impact the quality and reliability of the final products. MAM process monitoring, especially with the use of machine learning (ML) frameworks, is crucial for improving build quality and eliminating defects. This article discusses different monitoring methods and proposes a ML framework for process condition monitoring, highlighting the importance of advancing ML-based research in this field.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
Article
Materials Science, Multidisciplinary
Cheng-Ling Tai, Po-Jui Tai, Ting-Jung Hsiao, Po-Han Chiu, Chien-Yu Tseng, Tzu-Ching Tsao, Tsai-Fu Chung, Yo-Lun Yang, Chih-Yuan Chen, Shing-Hoa Wang, Jer-Ren Yang
Summary: The effects of natural ageing treatment on the microstructures and mechanical properties of AA7075 aluminum alloy were studied. The results showed that natural ageing treatment significantly increased the hardness of the samples, and the artificially aged samples with prior natural ageing reached the peak tensile and yield strength values.
Article
Materials Science, Multidisciplinary
Ting-Jung Hsiao, Po-Han Chiu, Cheng-Lin Tai, Tzu-Ching Tsao, Chien-Yu Tseng, Yi-Xian Lin, Hsueh-Ren Chen, Tsai-Fu Chung, Chih-Yuan Chen, Shing-Hoa Wang, Jer-Ren Yang
Summary: In this study, artificial aging treatments were performed on Al-5.98Zn-2.86Mg-1.61Cu alloy and Al-5.91Zn-2.83Mg-1.98Cu alloy after solid solution treatment. It was found that the optimal strengths were achieved after artificial aging at 120 degrees C for 24 h for both alloys. The average sizes and number density of the major strengthening precipitates, eta', were calculated using transmission electron microscopy (TEM) images and electron energy loss spectroscopy (EELS).
Editorial Material
Engineering, Manufacturing
Hao Wang, Jerry Ying Hsi Fuh
JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING
(2023)
Review
Engineering, Biomedical
Harish K. Handral, Vaishali P. Natu, Tong Cao, Jerry Y. H. Fuh, Gopu Sriram, Wen F. Lu
BIO-DESIGN AND MANUFACTURING
(2022)
Review
Engineering, Manufacturing
Xing Peng, Lingbao Kong, Jerry Ying Hsi Fuh, Hao Wang
Summary: Additive manufacturing technology has advanced rapidly, allowing for production of complex parts with improved surface quality and mechanical properties. Post-processing technologies are applied to address challenges faced during AM processes, enhancing the overall quality of additively manufactured parts.
JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING
(2021)
Review
Engineering, Biomedical
Niyou Wang, Jerry Ying Hsi Fuh, S. Thameem Dheen, A. Senthil Kumar
Summary: With the continuous improvement of nanoparticle synthesis methods, it is possible to better meet the needs of different applications and enhance their widespread use.
BIO-DESIGN AND MANUFACTURING
(2021)
Article
Automation & Control Systems
Kunpeng Zhu, Jerry Ying Hsi Fuh, Xin Lin
Summary: Defects in metal-based additive manufacturing processes hinder its reliable application in critical industries like aerospace and medical, highlighting the importance of process monitoring. A machine learning framework provides a technical basis for monitoring, with shallow and deep learning methods proposed in this article for monitoring the MAM process.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
