A5064528002- Ferroelectric and Piezoelectric Materials
- Acoustic Wave Resonator Technologies
- Multiferroics and related materials
- Dielectric materials and actuators
- Microwave Dielectric Ceramics Synthesis
- Ultrasound Imaging and Elastography
- Piezoelectric Actuators and Control
- Advanced Sensor and Energy Harvesting Materials
- Advanced Materials and Mechanics
- Acoustic Wave Phenomena Research
- Electronic and Structural Properties of Oxides
- Ultrasonics and Acoustic Wave Propagation
- Perovskite Materials and Applications
- Copper-based nanomaterials and applications
- Advanced Photocatalysis Techniques
- Micro and Nano Robotics
- Soft Robotics and Applications
- Innovative Energy Harvesting Technologies
Xi’an University
2025
Xi'an University of Technology
2025
Harbin Institute of Technology
2018-2024
Wuhan Engineering Science & Technology Institute
2024
Peking University
2020-2022
Shenzhen University
2022
Harbin University
2018
Abstract [001] C ‐Textured 0.55Pb(Ni 1/3 Nb 2/3 )O 3 –0.15PbZrO –0.3PbTiO (PNN‐PZT) ceramics are prepared by the templated grain‐growth method using BaTiO (BT) platelet templates. Samples with different template contents fabricated and compared in terms of texture fraction, microstructure, piezoelectric, ferroelectric dielectric properties. High piezoelectric performance ( d 33 = 1210 pC N −1 , * 1773 pm V at 5 kV cm ) high figure merit g ⋅ (21.92 × 10 −12 m 2 achieved ‐textured PNN‐PZT...
Abstract It is desired to obtain a piezoceramic with high piezoelectric coefficient and low dielectric loss simultaneously for energy harvester application. Herein, it reported that the 0.025Pb(Mn 1/3 Nb 2/3 )O 3 ‐0.525Pb(Ni ‐0.135PbZrO ‐0.315PbTiO (PMNN‐PZT) ceramic exhibits superior charge parameter e 33 of 37.74 pC m −2 tanδ 0.45%. Furthermore, PMNN‐PZT ceramic‐based magneto‐mechano‐electric coupled (MMEC‐EH) varying‐stiffness cantilever designed fabricated, which shows strong...
Although the MPB composition 0.42PNN-0.21PZ-0.37PT ceramic has high piezoelectric properties, its temperature stability at room is rather poor due to low phase-transition temperature. By texture engineering using BaTiO3 (BT) as template, of this material can be greatly improved. In range from up 140 °C, effective strain constant d33* 0.42PNN-0.21PZ-0.37PT-3BT only changed by 4.9% 1278 1215 pm/V, while nontextured counterpart 46.7% value 920 pm/V with maximum deviation 1350 80 °C. addition,...
A WO3-x/TiO2-x nanotube array (NTA) heterojunction photoanode was strategically designed to improve photoelectrocatalytic (PEC) performance by establishing a synergistic vacancy-induced self-doping effect and localized surface plasmon resonance (LSPR) of metalloid non-stoichiometric tungsten suboxide. The NTA synthesized through successive process anodic oxidation form TiO2 arrays, magnetron sputtering deposit WO3-x, post-hydrogen reduction engender oxygen vacancy in TiO2-x as well...
Next-generation electromechanical conversion devices have a significant demand for high-performance lead-free piezoelectric materials to meet environmentally friendly requirements. However, the low properties of piezoceramics limit their application in high-end transducer applications. In this work, 0.96K0.48Na0.52Nb0.96Sb0.04O3-0.04(Bi0.5-xSmx)Na0.5ZrO3 (abbreviated as T-NKN-xSm) ceramic was designed through phase regulation and texture engineering, which is expected solve difficulty....
The progress of next-generation electromechanical devices is substantially reliant upon achieving high coupling performance in piezoelectric materials. Here, a local stress regulation strategy introduced to significantly enhance the overall response lead-free piezoceramics. A remarkable large coefficient (d33) ∼800 pC N−1 and longitudinal factor (k33) 88% are obtained (K,Na)NbO3 (KNN)-based textured From both experimental examinations theoretical simulation, including phase-field analyses,...
Piezoelectric ceramic devices, which utilize multifarious vibration modes to realize electromechanical coupling and energy conversions, are extensively used in high-technological fields. However, the excitation of basic is mainly subjected natural eigenfrequency related structure material parameters. Herein, inspired by metamaterial theory, a programmable, 3D ordered with piezoceramic strain units (3D OSPSU) developed artificially generate broad frequency band other than only narrow...
Abstract The development of high‐performance potassium sodium niobate (KNN)‐based piezoceramics for next‐generation transducer devices is essential a sustainable society. However, apart from remarkable piezoelectrical properties, considerable momentum should also be paid to preferable mechanical properties the reliable operation electronic devices. Herein, novel three‐step sintering technique proposed in this study modulate grain growth behavior, leading simultaneous enhancement...
Continual precision actuations with nanoscale resolution over large ranges have extensive requirements in advanced intelligent manufacturing and precise surgical robots. To produce continual nanostep motion, conventionally, multiple pairs of piezo-actuators are employed to operate inchworm principle under complex three- or four-phase timing signal drive. Inspired by the idea ordered structures functional units, a much simpler piezoelectric actuator consisting (2 × 2) arrayed, cofired...
The development of piezoelectric ceramics characterized by both large response and high temperature stability is imperative for the advancement practical electromechanical devices. However, existing high-performance often encounter compromised due to ferroelectric phase transitions occurring within low-temperature regions. In this work, we focused on Sm-doped Pb(Ni<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>-PbZrO<sub>3</sub>-PbTiO<sub>3 </sub>(PNN-PZT:Sm) with tetragonal (T)-phase structure...
In this work, we report a cofired-12-layer ceramic based standing-wave linear piezoelectric ultrasonic micromotor (SW-LPUM) with high-load-density using LiCO3 doped 0.05Pb(Mn1/3Sb2/3)O3-0.47PbZrO3-0.48PbTiO3 (PMnS-PZT) material. The proposed SW-LPUM features miniaturized structure (12.45 × 5.3 3.5 mm3) and excellent comprehensive actuation performances, such as fast response time (0.05 ms), high resolution (50 nm), broad adjustable velocity range (from 0.01 to 123.7 mm s−1). Specifically,...
In this paper, 0.36Pb(Ni[Formula: see text]Nb[Formula: text])O 3 –0.24PbZrO –0.40PbTiO (PNN-PZT) ceramic was prepared, and texture engineering performed on PNN-PZT to improve its electromechanical properties temperature stability. Single element ultrasonic transducers were prepared using PNN-PZT, textured ceramics, their performance evaluated compared a PZT-5H based transducer as the benchmark. It is shown that sensitivity bandwidth of ceramic-based are much superior regular transducers.