Article
Acoustics
Cecile Floer, Omar Elmazria, Natalya Naumenko, Florian Bartoli, Jaafar Ghanbaja, Thierry Aubert, Sami Hage-Ali
Summary: This study investigates a batteryless, wireless, and packageless acoustic wave sensor based on LN-Y128 substrate and AlN overlayer, demonstrating its potential applications. Experimental measurements and simulations of the AlN/IDT(Pt)/LN-Y128 bilayer structure show promising prospects for this packageless high-temperature sensor.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Article
Engineering, Electrical & Electronic
F. Laidoudi, F. Kanouni, A. Assali, C. Caliendo, S. Amara, H. Nezzari, F. Boubenider
Summary: This paper numerically studies a solidly mounted resonator (SMR) based on AlN doped with Yttrium (Y) in thickness shear (TS) mode, which shows improved electromechanical performance and liquid sensing capabilities. The effect of Y concentrations on the acoustic properties of the SMR and its sensitivity to liquids mass loading, viscosity, and conductivity are investigated. The results demonstrate the potential of Y-doped AlN for high sensitive sensors in liquids characterization.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Electrical & Electronic
Ahmet Bicer, Aysevil Salman Durmuslar, Nurettin Korozlu, Ahmet Cicek
Summary: This study introduces an add-drop filter based on a two-dimensional phononic crystal with linear waveguides coupled through a ring resonator. Numerical investigations show that the filter can detect methanol concentration in ethanol with high sensitivity and a significant contrast ratio between the drop and add port outputs. The filter has a small footprint and can be calibrated for concentration sensing in different binary liquid mixtures.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Analytical
Liang Lei, Bo Dong, Yuxuan Hu, Yisong Lei, Zhizhong Wang, Shuangchen Ruan
Summary: This article introduces a high-frequency SAW resonator based on a sandwiched structure, which improves its phase velocity and electromechanical coupling coefficient for better performance. The sandwiched structure can achieve an operating frequency of up to 6.15 GHz, with high electromechanical coupling coefficient and phase velocity, providing a new option for the design of high-performance and high-frequency SAW devices.
Article
Physics, Applied
Qinwen Xu, Jie Zhou, Yan Liu, Yang Zou, Wenjuan Liu, Yao Cai, Chengliang Sun
Summary: This paper proposes a method of suppressing spurious modes in high-performance Lamb wave devices by reducing the overlap length of electrodes. The use of an AlN/Al0.8Sc0.2N composite film enables a balance between the electromechanical coupling coefficient (k(t)(2)) and Q factor. The study utilizes finite-element analysis and experimental fabrication of Lamb wave resonators with different electrode configurations to verify the effectiveness of spurious mode suppression.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Multidisciplinary Sciences
Yoav Hazan, Ahiad Levi, Michael Nagli, Amir Rosenthal
Summary: The authors demonstrate high-resolution in vivo optoacoustic tomography using a miniaturized silicon-photonics acoustic detector coated with a sensitivity-enhancing elastomer. This detector allows for tomographic imaging with spread functions narrower than 20 μm and eliminates the parasitic effect of surface acoustic waves. The miniaturized detector provides higher resolution compared to piezoelectric array transducers commonly used in medical ultrasound and optoacoustic imaging.
NATURE COMMUNICATIONS
(2022)
Article
Acoustics
Erlend Magnus Viggen, Havard Kjellmo Arnestad
Summary: This article investigates an enhanced model for sound radiation near and below coincidence. Unlike the classical model, this model fully respects conservation of energy by balancing the radiated power with power lost from the guided wave underlying the vibration. The model successfully validates against exact solutions for leaky A0 Lamb waves around coincidence.
JOURNAL OF SOUND AND VIBRATION
(2023)
Article
Chemistry, Analytical
Laixia Nian, Yuanhang Qu, Xiyu Gu, Tiancheng Luo, Ying Xie, Min Wei, Yao Cai, Yan Liu, Chengliang Sun
Summary: The piezoelectric constants of AlN, ScAlN, and AlN/ScAlN composites were obtained through first-principles calculation and Mori-Tanaka model. Five types of AlN/ScAlN thin films were prepared on 8-inch silicon substrates, and the film quality was characterized by measuring crystal quality, roughness, and stress distribution. The results showed that the composite film effectively addressed the problem of abnormal grains and reduced roughness. A lamb wave resonator with an AlN/Sc0.2Al0.8N composite was fabricated, which had an effective electromechanical coupling coefficient K-eff(2) of 6.19% and potential for designing high-frequency broadband filters.
Article
Chemistry, Analytical
Yuan Ning, Menglun Zhang, Hongxiang Zhang, Xuexin Duan, Yi Yuan, Buohua Liu, Wei Pang
Summary: This study explores the mechanism of a new acoustic micro-ejector using a Lamb wave transducer array, which can stably generate picoliter droplet jetting through a combination of acoustic pressure waves and acoustic streaming. Experimental results demonstrate that the ejector can continuously produce uniform small water droplets at a high rate, thanks to a large liquid height window and high ejection stability, making it suitable for demanding biochemical applications.
Article
Acoustics
Stefan Braun, Helmut Nowotny, Ewald Benes, Martin Groeschl
Summary: In this paper, a general rigorous transfer matrix description for one-dimensional (1D) layered structures consisting of piezoelectric, visco-elastic, and dielectric layers of arbitrary number is introduced to characterize the electrical and mechanical behavior of a general piezoelectric transducer or resonator with two electrodes and arbitrary acoustic termination impedances (Rig-1D-model).
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Chemistry, Analytical
Viktor Fairuschin, Felix Brand, Alexander Backer, Klaus Stefan Drese
Summary: Nondestructive evaluation of elastic properties is critical for monitoring thin structures. Recent research shows that guided acoustic waves' dispersive nature can accurately determine their elastic properties. This study presents a new approach using piezoelectric transducers to measure group velocities ratio, achieving high accuracy with a simple setup for industrial use.
Article
Chemistry, Analytical
Johannes Landskron, Florian Doetzer, Andreas Benkert, Michael Mayle, Klaus Stefan Drese
Summary: In this study, a new method that uses signals from different sound propagation paths to compensate for flow measurement errors in domestic water meters is proposed. The method is validated through simulations and experimental data, demonstrating its ability to separate the effects of temperature and limescale deposition on flow measurement and provide an improved solution.
Article
Chemistry, Analytical
Haiyan Sun, Shitao Lv, Aoyu Zhang, Chenguang Song, Xinyi Sun, Fazeng Tan, Liuhong Liang, Yinfang Zhu, Jicong Zhao
Summary: This paper introduces a high quality-factor and spectrum-clean AlN Lamb-wave resonator, which achieves improved Q values and spectral purity through optimized boundary reflection conditions and electrode design.
Article
Acoustics
P. Shivashankar, N. Nocera, S. Livadiotis, S. Mozaffar, M. R. Drew, S. Salamone
Summary: Rodent models of behavior generate multimodal data that can be used to study physiology, behavior, and underlying psychological states. This article lays the foundations for using guided ultrasonic waves to detect behavior and draw inferences about acoustic startle responses. Experimental findings validate the practicality of this technology and demonstrate its capability to enhance studies of rodent behavior.
Article
Nanoscience & Nanotechnology
Eyglis Ledesma, Ivan Zamora, Jesus Yanez, Arantxa Uranga, Nuria Barniol
Summary: This research introduces a compact single cell for monitoring fluid properties, demonstrating high sensitivity and performance using a single device for multi-functional detection.
MICROSYSTEMS & NANOENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Yuanyuan Zhang, Qianqian Chen, Ruijuan Qi, Hao Shen, Fengrui Sui, Jing Yang, Wei Bai, Xiaodong Tang, Xuefeng Chen, Zhengqian Fu, Genshui Wang, Shujun Zhang
Summary: In this work, a high-performance multilayer heterostructure (PbZrO3/PbTiO3)n is reported, which achieves a high electric breakdown strength (2.9 MV/cm) and a maximum recoverable energy storage density of 36.4 J/cm3 through the heterostructure strategy. The competitive effects of interfacial blockage and local strain defects on the breakdown strength are revealed, showing an inflection point at n = 3. Atomic-scale characterizations shed light on the underlying microstructure mechanism of the interplay between heterointerface dislocations and decreased energy storage performance. This study demonstrates the potential of well-designed multilayers with high energy storage performance through heterostructure engineering.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Bin Zhang, Xiao-ming Chen, Zhe Pan, Peng Liu, Minmin Mao, Kaixin Song, Zhu Mao, Rong Sun, Dawei Wang, Shujun Zhang
Summary: In this study, a series of all-organic dielectric polymer composites were fabricated by blending NTCDA with PEI. These composites exhibited excellent energy storage performance at high temperatures, with high discharge energy density and efficiency. This research provides a facile and effective strategy for the design of high-temperature dielectric polymers for advanced electronic and electrical systems.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Jiahao Wang, Libing Bai, Cong Chen, Jie Zhang, Quan Zhou, Lulu Tian, Jun Luo, Wei Huang, Yuhua Cheng
Summary: In this article, a field reconstruction technique based on scanning laser displacement measurement is developed to accurately capture the dynamic deformation field distribution on the surface of IGBT chips. The impacts of switching conditions on the deformation fluctuation characteristics of IGBT chips are investigated comprehensively. The results show that the middle region of the IGBT chip suffers from a relatively larger deformation compared to the edge area. In addition, the deformation fluctuation is negatively correlated with the switching frequency, positively related to load amplitude, and shows a trend of increasing first, and then, decreasing with duty cycle.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Review
Chemistry, Multidisciplinary
Hong Zhou, Liangge Xu, Zhihao Ren, Jiaqi Zhu, Chengkuo Lee
Summary: This review introduces the combination of machine learning (ML) and surface-enhanced spectroscopy techniques (SERS/SEIRA) and discusses the benefits of ML algorithms for SERS/SEIRA. It also highlights the applications of ML-combined SEIRA/SERS in molecular diagnostics and screening and provides perspectives on future developments in ML-integrated SEIRA/SERS.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Lixiang Lai, Bin Li, Shuo Tian, Zhihao Zhao, Shujun Zhang, Yejing Dai
Summary: A giant unipolar electrostrain of 1.6% is achieved in Sr/Nb-doped Bi-0.5(Na0.82K0.18)(0.5)TiO3 lead-free textured piezoceramics by defect dipole design, which is comparable to or even higher than state-of-the-art lead-based piezoelectric single crystals. The enhanced electrostrain is realized through reversible electric-field-induced phase transition, grain orientation engineering, and defect dipole engineering. This research provides a general strategy for designing piezoceramics with high electrostrain.
ADVANCED MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Peter Kabakov, Taeyang Kim, Zhenxiang Cheng, Xiaoning Jiang, Shujun Zhang
Summary: Piezoelectric materials can convert electrical energy into mechanical response and combining different types of piezoelectric materials into composites can create well-rounded properties. These composites have the advantage of combining the flexibility of polymers with the high electromechanical coupling and piezoelectric coefficients of ferro-electric ceramics or single crystals, making them suitable for various applications such as medical ultrasound imaging and therapy, underwater acoustic sensing, industrial structural health monitoring, and energy harvesting.
ANNUAL REVIEW OF MATERIALS RESEARCH
(2023)
Article
Instruments & Instrumentation
Chao Ren, Libing Bai, Ruilong Shi, Jie Zhang, Xu Zhang, Cong Chen
Summary: Current distribution measurement methods are widely used in various fields, including medical examinations, semiconductor devices fault prediction, and structural integrity assessment. However, existing methods cannot provide high spatial resolution images of current distribution. Therefore, a non-contact method based on infrared thermography is proposed in this study to accurately measure current amplitude and reconstruct current direction using thermal variations and the passivity of the electric field.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Multidisciplinary Sciences
Jinglei Li, Wanbo Qu, John Daniels, Haijun Wu, Linjing Liu, Jie Wu, Mingwen Wang, Stefano Checchia, Shuai Yang, Haobin Lei, Rui Lv, Yang Zhang, Danyang Wang, Xuexin Li, Xiangdong Ding, Jun Sun, Zhuo Xu, Yunfei Chang, Shujun Zhang, Fei Li
Summary: We developed a seed-passivated texturing process using Ba(Zr, Ti)O3 microplatelet templates to fabricate textured PZT ceramics. This process promotes template-induced grain growth in titanium-rich PZT layers and enables the desired composition through interlayer diffusion of zirconium and titanium. The textured PZT ceramics exhibited excellent properties, with Curie temperatures of 360 degrees C, piezoelectric coefficients d(33) of 760 picocoulombs per newton and g(33) of 100 millivolt meters per newton, and electromechanical couplings k(33) of 0.85. This study overcomes the challenge of fabricating textured rhombohedral PZT ceramics by suppressing the chemical reaction between PZT powder and titanate templates.
Article
Multidisciplinary Sciences
Nengneng Luo, Li Ma, Gengguang Luo, Chao Xu, Lixiang Rao, Zhengu Chen, Zhenyong Cen, Qin Feng, Xiyong Chen, Fujita Toyohisa, Ye Zhu, Jiawang Hong, Jing-Feng Li, Shujun Zhang
Summary: The authors designed NaNbO3 based ceramics to achieve a reversible phase transformation between antiferroelectric and ferroelectric phases, resulting in a well-defined double hysteresis loop in the P-E hysteresis curve. NaNbO3 is a lead-free antiferroelectric material with potential applications in energy storage capacitors, solid-state cooling, and displacement transducers. A new strategy of reducing the oxygen octahedral tilting angle is proposed to stabilize the antiferroelectric phase of NaNbO3, and its effectiveness is confirmed through experimental characterization. The resulting ceramic exhibits highly reversible phase transitions and improved properties compared to pure NaNbO3.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jincymol Joseph, Yumeng Du, Zhenxiang Cheng, Shujun Zhang
Summary: The fabrication of ceramic capacitors requires breakthroughs in technology to address concerns about sustainability, cost, and power consumption. A low temperature sintered xBiScO(3)-(1-x)BaTiO3 (BS-BT) with x = 0.4 has been found to have excellent energy storage performance and temperature stability. The use of this material leads to improved breakdown field and energy storage properties due to decreased grain size. This study also explores the compatibility of different electrode materials, expanding the possibilities for cost-effective production.
Article
Nanoscience & Nanotechnology
Leiyang Zhang, Ruiyi Jing, Hongliang Du, Yunyao Huang, Qingyuan Hu, Yuan Sun, Yunfei Chang, Denis Alikin, Xiaoyong Wei, Wenwu Cao, Vladimir Shur, Shujun Zhang, Dragan Damjanovic, Li Jin
Summary: This research introduces a novel approach to texture engineering in order to enhance the electrostrictive effect. The (Ba0.95Ca0.05)(Ti0.88Sn0.12)O-3 (BCTS) ceramics exhibit ultrahigh electrostrictive strain and negligible hysteresis, offering great potential for advancements in this field.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Jianguo Chen, Binghao Cui, John E. Daniels, Jianli Wang, Qinfen Gu, Ying Jiang, Zhenxiang Cheng, Jinrong Cheng, Shujun Zhang
Summary: The origins of unipolar strain, strain hysteresis, and remnant strain in Mn-modified BF-BT ceramics near the pseudo-cubic and rhombohedral (PC-R) phase boundary were investigated using high-energy synchrotron X-ray diffraction. It was found that the largest unipolar strain occurred at the composition with a single pseudo-cubic phase, due to the synergetic contributions from reversible phase transition, non-180 degrees domain switching, and lattice distortion. The phase boundary composition exhibited irreversible phase transition, with the unipolar strain attributed to lattice distortion. The lowest strain hysteresis and remnant strain were observed in BF-BT ceramics with rhombohedral phase, as reversible lattice distortion dominated the strain level.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Multidisciplinary Sciences
Xinhui Li, Shan He, Yanda Jiang, Jian Wang, Yi Yu, Xiaofei Liu, Feng Zhu, Yimei Xie, Youyong Li, Cheng Ma, Zhonghui Shen, Baowen Li, Yang Shen, Xin Zhang, Shujun Zhang, Ce-Wen Nan
Summary: Polymer nanocomposites with optimized interfacial structures between nanoparticles and polymers can greatly enhance the material properties. In polar polymers, two interfacial layers, namely an inner bound polar layer and an outer polar layer, are observed around nanoparticles. This bilayer structure can significantly enhance the polarity-related properties of polymer nanocomposites.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Xiuhua Yin, Hong Zhou, Mengling Zhang, Juan Su, Xiao Wang, Sijie Li, Zaixing Yang, Zhenhui Kang, Ruhong Zhou
Summary: This study discovered an ultra-small nanodot, C3N, that inhibits the aggregation of A beta peptides and improves behavioral deficits in an AD mouse model. C3N nanodots not only reduce the levels of A beta peptides but also protect neurons and synapses.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Cheng Xu, Zhihao Ren, Hong Zhou, Jingkai Zhou, Dongxiao Li, Chengkuo Lee
Summary: This study investigates the impact of near-field coupling on the chirality response of chiral metamaterials. It is observed that strong near-field coupling induces less chiral response, providing evidence for the assumption. The study also demonstrates the use of enhanced near-field coupling for glucose enantiomer sensing and explores the potential of using arrayed metamaterials for broadband signal detection.
ADVANCED FUNCTIONAL MATERIALS
(2023)
