Article
Chemistry, Multidisciplinary
Zhao Li, Hao-Cheng Thong, Yun-Fan Zhang, Ze Xu, Zhen Zhou, Yi-Xuan Liu, Yue-Yu-Shan Cheng, Shi-Hong Wang, Chunlin Zhao, Feng Chen, Ke Bi, Bing Han, Ke Wang
Summary: Innovative defect engineering has led to well-balanced performances in PZT-based ceramics, surpassing many current commercial counterparts and showing great potential for advanced electromechanical applications.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Ceramics
Ruizhi Wang, Enling Tang, Guolai Yang, Yafei Han, Chuang Chen, Mengzhou Chang, Kai Guo, Liping He
Summary: This research studies the discharge characteristics of PZT under high-pressure stress pulses and the effect of different circuits on its electrical output. The critical open-circuit measurement resistance (Rcritial) of PZT decreases with stress frequency, and the output voltage is positively correlated with load resistance. Experiments confirm a reverse positive charge appearing at the negative pole of the material during stress unloading.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Bo-Kun Koo, Soon-Jong Jeong, Dong-Hwan Lee, Dong-Jin Shin, Min -Soo Kim, In -Sung Kim, Piyl-Whan Han
Summary: The electric cycling characteristics of Cu/(0.2)(PbMg1/3Nb2/3O3)-0.8(PbZr0.475Ti0.525O3) multilayer ceramic actuators were investigated, and the annealing temperature was found to have significant effects on their performance. After electrical cycling, the sample annealed at 400 degrees C showed significant degradation in the electromechanical coupling coefficient and dynamic piezoelectric constant, while the sample annealed at 225 degrees C showed less degradation. X-ray diffraction and X-ray photoelectron spectroscopy analyses revealed differences in crystalline structures that affected the performance.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Jae Man Park, Jun Sae Han, Joo Won Oh, Seong Jin Park
Summary: This research investigated the rheological behavior and mechanical properties of PMN-PZT ceramic feedstock, finding that feedstocks with lower solids loading exhibit better rheological characteristics, which are crucial for manufacturing micro-scale piezoelectric structures with high aspect ratios. Additionally, the study highlights the importance of solid loading on mechanical properties such as flexural stress and elastic modulus.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Engineering, Manufacturing
Xiaolong An, Yahang Mu, Jiawang Chen, Jingjing Liang, Jinguo Li, Yizhou Zhou, Xiaofeng Sun
Summary: The addition of ZrO2 mineralizer aggravates light scattering effect during the curing process, but it also inhibits crack formation and improves high-temperature mechanical properties. Optimal mechanical performance can be achieved by controlling the content of ZrO2 mineralizer within the range of 2.0-2.5 vol%.
ADDITIVE MANUFACTURING
(2022)
Article
Construction & Building Technology
Pengfei Li, Wei Jiang, Rong Lu, Dongdong Yuan, Jinhuan Shan, Jingjing Xiao
Summary: This study assessed the design and durability performance of piezoelectric materials based on pavement perception by preparing PZT/PVDF composites, testing their electrical and mechanical properties, determining the optimal volume ratio, and preparing durable piezoelectric perception devices. The results showed that composites with a 50% PZT volume ratio had superior comprehensive properties and good durability even after 150,000 repeated loads.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Murali Duddi, Amarteja Kocherla, Kolluru V. L. Subramaniam
Summary: The article investigates the effects of material and structural size on the electrical impedance response of embedded PZT sensors used in smart sensing concrete. Lead Zirconate Titanate (PZT) is used to develop an embedded sensor for concrete monitoring. The research explores the relationship between dynamic response, material resistance, and structural stiffness in concrete specimens of different sizes.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Materials Science, Ceramics
M. A. Torres, M. A. Madre, O. J. Dura, G. Garcia, S. Marinel, P. Martinez-Filgueira, A. Sotelo
Summary: This study investigated the effect of hot-pressing conditions on Sr-doped Ca3Co4O9 materials. Results showed that increasing temperature and pressure during hot-pressing improved grain orientation, density, flexural strength, and microhardness, while decreasing electrical resistivity. Thermal conductivity values varied irregularly, and the highest ZT values were achieved at 900 degrees C and 61 MPa.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Geological
Prateek Negi, Tanusree Chakraborty, Suresh Bhalla
Summary: Cyclic loading deteriorates the strength of structures slowly, potentially leading to fatigue failure. The study investigates the feasibility of using piezo-based sensors and the electro-mechanical impedance technique for timely detecting damages in rocks under cyclic loading, showing promising potential in structural health monitoring of rocks.
Article
Materials Science, Ceramics
Longbiao Li
Summary: Under monotonic and cyclic tensile loading, stochastic brittle fragmentations significantly influence the mechanical behavior of fiber-reinforced ceramic-matrix composites (CMCs). Experimental and theoretical models were used to study the synergistic effects of matrix and fiber fragmentations on loading/unloading hysteresis behavior. The study also analyzed the impacts of fiber volume fraction and strength on the hysteresis loops of CMCs, providing valuable insights for composite material design optimization.
CERAMICS INTERNATIONAL
(2021)
Article
Neurosciences
Yuxia Hu, Yufei Wang, Rui Zhang, Yubo Hu, Mingzhu Fang, Zhe Li, Li Shi, Yankun Zhang, Zhong Zhang, Jinfeng Gao, Lipeng Zhang
Summary: The study investigated the use of resting-state EEG indicators in stroke rehabilitation evaluation. The results showed significant differences in QEEG and non-linear parameters among the severe, moderate, and mild groups, with an accuracy rate of 85.3% for the optimal feature classification combination.
COGNITIVE NEURODYNAMICS
(2023)
Article
Materials Science, Multidisciplinary
Mahmoud Barati, Behnaz Amini, Valentin Segouin, Laurent Daniel, Shabnam Arbab Chirani, Sylvain Calloch
Summary: This study investigates the behavior of soft PZT ceramic under compressive cyclic loadings to understand dissipative processes and domain switching mechanisms. Infrared thermography and digital image correlation techniques are used to measure temperature and displacement, revealing significant energy dissipation during mechanical loadings. The research shows that domain wall activity is independent of the initial polarization state under cyclic compressive stress, highlighting the influence of domain switching mechanisms on PZT ceramic response.
Article
Materials Science, Ceramics
Qi Song, Zhitao Cheng
Summary: This research investigates the dynamic mechanical properties and fracture behavior of TiB2-SiC/B4C composite ceramics under high strain rates. The results show that these composite ceramics have excellent dynamic compression strength (2750 MPa) and a pronounced strain-rate strengthening effect. The Hugoniot elastic limit is calculated as 18.49 GPa, and the dynamic fracture mechanisms are summarized into three main points: the strengthening effect of in situ second phases, the mixed-inter/transgranular fracture mode for energy absorption, and the role of anchoring effect and thermal expansion coefficient mismatch in energy dissipation and fracture toughness improvement. This work provides a foundation for the application and development of lightweight armor ceramic materials.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Composites
Zhiwen Huang, Xiao Yang, Zhikang Yuan, Ya Sun, Xuan Liu, Gang Sun, Jun Hu, Jinliang He
Summary: In this study, a modified Voronoi network model is developed to simulate the response of electrical field grading materials under arbitrary excitation. The model accurately describes the grain-boundary structure of ZnO microvaristors and incorporates the nonlinear conductivity based on carrier transport mechanism. It successfully replicates the resistive contacts between fillers and the micro-region breakdown phenomenon during the formation of conduction path. The model's accuracy is evaluated using AC and surge measurements for ZnO/SiR samples.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Ryota Watanabe, Aira Matsugaki, Takuya Ishimoto, Ryosuke Ozasa, Takuya Matsumoto, Takayoshi Nakano
Summary: This study established an ex vivo bone culture system using embryonic mouse femurs to artificially control the mechanical environment. The findings showed that mechanical loading promoted bone growth and development, and induced the formation of an oriented collagen/apatite microstructure.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Ceramics
Suraj Manikandan, Naveen Aruchamy, Lucas Allirol, Stephanie Girod, Sebastjan Glinsek, Emmanuel Defay, Torsten Granzow
Summary: This paper investigates the dielectric response of PZT thin films prepared by solution deposition at different frequencies and temperatures. The results show that the PZT films exhibit two relaxation phenomena in their permittivity, with the low-frequency relaxation affected by temperature and the high-frequency relaxation practically independent of temperature.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Alfredo Blzquez Martnez, Patrick Grysan, Stephanie Girod, Sebastjan Glinsek, Torsten Granzow
Summary: The study demonstrates the existence of bulk photovoltaic effect in solution-processed BiFeO3 thin films, providing direct evidence for its existence in polycrystalline films.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
Uwe Schroeder, Terence Mittmann, Monica Materano, Patrick D. Lomenzo, Patrick Edgington, Young H. Lee, Meshari Alotaibi, Anthony R. West, Thomas Mikolajick, Alfred Kersch, Jacob L. Jones
Summary: Researchers conducted detailed studies on phase transitions in doped HfO2 and ZrO2-based films with varying dopant and oxygen content, revealing the direct impact of dopants and oxygen content on phase transition temperature, as well as observing a first-order phase transition and peak in dielectric constant.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Physics, Applied
Alexis Payne, H. Alex Hsain, Younghwan Lee, Nicholas A. Strnad, Jacob L. Jones, Brendan Hanrahan
Summary: This study investigates the temperature sensitivity of electrical properties of Al-doped HfO2 thin films. The results show that these films exhibit stable capacitance and energy storage density within the range of -125 to 125 degrees C, demonstrating their potential for temperature-stable microelectronics.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Sukhyun Kang, Sang Hoon Kim, Han Bit Lee, Sungwook Mhin, Jeong Ho Ryu, Young Won Kim, Jacob L. Jones, Yong Son, Nak Kyu Lee, Kangpyo Lee, Yunseok Kim, Kyung Hwan Jung, Hyuksu Han, Suk Hee Park, Kang Min Kim
Summary: Recent progress in piezoelectric-based wearable devices has achieved high-performance energy harvesting for human-sensing applications. However, existing piezoelectric nanomaterials have low piezoelectricity, limiting the industrial-scale development of efficient piezoelectric devices. This study demonstrates a peapod-inspired design, in which ZnSnO3 anchored on surface-modified carbon nanotubes, significantly enhances the piezoelectricity of P(VDF-TrFE)-based nanofibers. These nanofibers show great potential for use in flexible energy-harvesting and pulse-sensing systems, with high output power and imperceptible pulse detection.
Article
Materials Science, Ceramics
Naveen Aruchamy, Stephanie Girod, Sebastjan Glinsek, Emmanuel Defay, Torsten Granzow
Summary: This study compares the fatigue behavior of fully transparent lead zirconate titanate films on fused silica glass or sapphire, respectively, with coplanar interdigitated top electrodes and no bottom electrodes, to that of the same systems in a traditional metal-insulator-metal parallel plate capacitor geometry. The polarization hysteresis decreases rapidly in the latter geometry during bipolar electrical cycling, while systems with coplanar electrodes show no notable fatigue up to 107 cycles. This difference is explained by the columnar microstructure of the films, where the grain boundaries act as trapping sites for oxygen vacancies in coplanar electrode geometries, preventing the formation of agglomerates that cause fatigue through domain wall pinning.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
H. Alex Hsain, Younghwan Lee, Suzanne Lancaster, Patrick D. Lomenzo, Bohan Xu, Thomas Mikolajick, Uwe Schroeder, Gregory N. Parsons, Jacob L. Jones
Summary: By inserting a 1 nm Al2O3 layer at the HZO/TiN interface, a protective passivating layer is introduced, resulting in improved remanent polarization and endurance of TiN/HZO/TiN capacitors.
Article
Physics, Applied
Alfredo Blazquez Martinez, Patrick Grysan, Stephanie Girod, Veronika Kovacova, Sebastjan Glinsek, Torsten Granzow
Summary: The study investigates the bulk photovoltaic effect in polycrystalline solution-deposited bismuth ferrite thin films, under different stress conditions induced by different substrates. The results show that the short-circuit bulk photovoltaic current increases by 150% when the compressive stress changes to tensile stress. This increase is attributed to the intrinsic piezophotovoltaic effect, indicating the potential to strain engineer the bulk photovoltaic effect in thin films.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
H. Alex Hsain, Younghwan Lee, Patrick D. Lomenzo, Ruben Alcala, Bohan Xu, Thomas Mikolajick, Uwe Schroeder, Gregory N. Parsons, Jacob L. Jones
Summary: Ferroelectric hafnium-zirconium oxide (HZO) is a promising material for low-power non-volatile memory applications due to its ferroelectricity at the nanoscale and compatibility with silicon-based technologies. The interface between HZO and its electrode is crucial for device performance. In this study, the effect of breaking vacuum during the sequential deposition steps is investigated. The results show that breaking vacuum after bottom electrode deposition leads to interfacial oxidation and increased carbon contamination, which affect the ferroelectric properties.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Alfredo Blazquez Martinez, Patrick Grysan, Stephanie Girod, Sebastjan Glinsek, Naveen Aruchamy, Pranab Biswas, Mael Guennou, Torsten Granzow
Summary: Electro-optic thin film materials play a crucial role in the fabrication of optical modulators in integrated photonic circuits and it is important to develop strategies to tune the linear electro-optic effect. Strain engineering has emerged as a powerful tool for optimizing the electro-optic coefficients in ferroelectric thin films. This study investigates the electro-optical properties of polycrystalline bismuth ferrite (BiFeO3) thin films and characterizes their electro-optic coefficients under different substrate-induced thermal stress.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Green & Sustainable Science & Technology
Madison D. Horgan, H. Alex Hsain, Jacob L. Jones, Khara D. Grieger
Summary: Analysis of the environmental, health, and societal impacts of lead-free piezoelectrics is crucial for materials development. The screening-level EMRA approach proposed in this paper is used to compare mining and processing routes for hafnia, a potential replacement for PZT, and identify the more sustainable route.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2023)
Article
Energy & Fuels
Junning Li, Alvar Torello, Youri Nouchokgwe, Torsten Granzow, Veronika Kovacova, Sakyo Hirose, Emmanuel Defay
Summary: Electrocaloric (EC) materials offer a promising alternative to traditional caloric heat pumps, as they can achieve significant temperature changes under the application of electric fields. Researchers have found EC effect in lead-free BaTiO3 multilayer capacitors, which exhibit strong first-order phase transition and improved electrical resistivity by adding a dopant. These findings suggest the potential for designing lead-free caloric cooling prototypes using optimized BaTiO3 capacitors.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Changhao Zhao, Sergey Prosandeev, Laurent Bellaiche, Fei Li, Shujun Zhang, Shengtao Li, Jacob L. Jones
Summary: In this study, the structural characteristics of the relaxor ferroelectric lead magnesium niobate (PMN) at different length scales are investigated using theoretical simulations and pair distribution function (PDF) analysis. The results reveal a disordered low-symmetry structure at the smallest length scale and a cubic crystallographic average structure at large length scale. Furthermore, a rhombohedral phase is found at the intermediate length scale due to chemical ordered regions with ordered local electric fields and quasi-correlated Pb displacements.
Review
Plant Sciences
Imani Madison, Lydia Gillan, Jasmine Peace, Flavio Gabrieli, Lisa van den Broeck, Jacob L. Jones, Rosangela Sozzani
Summary: Phosphorus is crucial for plant growth and crop yields, but its application in agriculture faces challenges such as pollution and low bioavailability. Understanding uptake and signaling mechanisms can help develop strategies to address these issues.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Nanoscience & Nanotechnology
Jose P. B. Silva, Ruben Alcala, Uygar E. Avci, Nick Barrett, Laura Begon-Lours, Mattias Borg, Seungyong Byun, Sou-Chi Chang, Sang-Wook Cheong, Duk-Hyun Choe, Jean Coignus, Veeresh Deshpande, Athanasios Dimoulas, Catherine Dubourdieu, Ignasi Fina, Hiroshi Funakubo, Laurent Grenouillet, Alexei Gruverman, Jinseong Heo, Michael Hoffmann, H. Alex Hsain, Fei-Ting Huang, Cheol Seong Hwang, Jorge Iniguez, Jacob L. Jones, Ilya V. Karpov, Alfred Kersch, Taegyu Kwon, Suzanne Lancaster, Maximilian Lederer, Younghwan Lee, Patrick D. Lomenzo, Lane W. Martin, Simon Martin, Shinji Migita, Thomas Mikolajick, Beatriz Noheda, Min Hyuk Park, Karin M. Rabe, Sayeef Salahuddin, Florencio Sanchez, Konrad Seidel, Takao Shimizu, Takahisa Shiraishi, Stefan Slesazeck, Akira Toriumi, Hiroshi Uchida, Bertrand Vilquin, Xianghan Xu, Kun Hee Ye, Uwe Schroeder
Summary: Ferroelectric hafnium and zirconium oxides have shown significant progress in ultralow-power electronic systems, but technical limitations still hinder their application. This article aims to provide a comprehensive overview of the current state, challenges, and prospects for the development of these materials, with the collaboration of experts from different fields.
