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
Materials Science, Ceramics
Tianqiong Wu, Wu Zhang, Fafu Liu, Zhanmin Dou, Shengqiang Han, Pengyuan Fan, Sheng-Gui Chen, Chanatip Samart, David Salamon, Hua Tan, Haibo Zhang
Summary: In this research, the introduction of 0.93NBT-0.07BT ceramic into 0.7BF-0.3BT ceramic has enhanced the piezoelectric property by creating a morphotropic phase boundary. XRD analysis confirms the presence of a homogeneous solid solution in the (0.7BF-0.3BT)-x(0.93NBT-0.07BT) ceramics, still within the MPB region. This study provides a new approach for the application of BF-BT ceramics in high-temperature piezoelectric devices.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Muhammad Habib, Myang Hwan Lee, Fazli Akram, Myong-Ho Kim, Won-Jeong Kim, Tae Kwon Song
Summary: This research has achieved excellent piezoelectric performance in lead-free ceramics, with high piezoelectric strain, low strain hysteresis, high Curie temperature, and a high figure of merit, making it suitable for a wide range of high-temperature commercial applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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
Aizhen Song, Yixuan Liu, Tianyi Feng, Haitao Li, Yuanyuan Zhang, Xuping Wang, Lisha Liu, Bo-Ping Zhang, Jing-Feng Li
Summary: This study demonstrates a facile approach to overcome the temperature instability issue of piezoelectric ceramics and achieve high-performance materials with excellent temperature stability.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Qiangwei Kou, Bin Yang, Haobin Lei, Shuai Yang, Zerui Zhang, Linjing Liu, Hang Xie, Yuan Sun, Yunfei Chang, Fei Li
Summary: Lead-free ceramics with superior piezoelectric performance are synthesized by a synergistic design strategy of integrating crystallographic texture, multiphase coexistence, and doping engineering, without sacrificing the Curie temperature. This work provides important guidelines for developing novel ceramics with outstanding piezoelectric properties and can largely expand application fields of textured BaTiO3-based ceramics into high-performance and multilayer electronic devices.
ACS APPLIED MATERIALS & INTERFACES
(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
Soukaina Merselmiz, Zouhair Hanani, Uros Prah, Daoud Mezzane, Lahoucine Hajji, Zahra Abkhar, Matjaz Spreitzer, Damjan Vengust, David Fabijan, Anna G. Razumnaya, Olesia Shapovalova, Igor A. Luk'yanchuk, Zdravko Kutnjak
Summary: This study investigates the structural, electrical, piezoelectric, and piezoelectric energy harvesting properties of Ba0.85Ca0.15Zr0.10Ti0.90O3 (BCZT) and BaTi0.89Sn0.11O3 (BTSn) mixed ceramic materials. The addition of BTSn allows for a wider temperature range of application, and the 0.2BTSn ceramic exhibits excellent piezoelectric energy harvesting properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Review
Materials Science, Multidisciplinary
Xuefan Zhou, Guoliang Xue, Hang Luo, Chris R. Bowen, Dou Zhang
Summary: This comprehensive review focuses on the development of lead-free sodium bismuth titanate (BNT) based ceramics, discussing their composition, microstructure, macroscopic properties, and potential applications in various fields. It also highlights the origin of macroscopic behavior, strategies for optimizing functional properties, and current challenges in this area, while introducing the potential applications of BNT-based ceramics in electrocaloric, oxide-ion conduction, and luminescence fields. Future perspectives and emerging research directions in this growing area are also provided.
PROGRESS IN MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Kui Chen, Jian Ma, Caiyun Shi, Wenjuan Wu, Bo Wu
Summary: By phase engineering and co-doping with Ta and Sb, the piezoelectric performance and temperature stability of KNNTSx-BSNZ ceramics have been improved, expanding the application potential of KNN-based ceramics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Chaoqiong Zhu, Ziming Cai, Limin Guo, Ying Jiang, Longtu Li, Xiaohui Wang
Summary: In this study, high-temperature dielectric lead-free ceramics were constructed by introducing trace MgO, effectively controlling dielectric loss and leakage current at high temperatures. The ceramics demonstrated excellent stability and high energy density.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Ceramics
Shenghao Wang, Hongbo Liu, Yuanyuan Wang, Hailan Qin, Jianwei Zhao, Zhilun Lu, Zhu Mao, Dawei Wang
Summary: BF-ST ceramics are a novel class of lead-free dielectric materials with notable dielectric constants and remarkable thermal stability. The microstructure and electrical properties of BF-ST ceramics near the morphotropic phase boundary were comprehensively investigated. The findings show that increasing the SrTiO3 content leads to changes in phase fractions and the formation of a distinctive heterogeneous core-shell microstructure.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Yuxia Kong, Xin Li, Zhengxiang Li, Jigong Hao
Summary: This study achieved excellent electrostrictive properties in Ni/Mn-modified ceramics, with a giant electrostrain and a high electrostriction coefficient. The materials exhibited stable electrical performance at high temperatures and fatigue resistance, showing great potential for actuator applications that require good cycling reliability.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Ceramics
Shengfang Shi, Hideki Hashimoto, Tohru Sekino
Summary: Lead-free BCZT ceramics were greatly optimized in piezoelectric properties by doping Co ions, with Co2+ and Co3+ playing different roles in enhancing the properties. The content ratio Co3+/Co2+ was found to be correlated with piezoelectric performance, with ceramics containing 0.10 wt% of Co ion showing the best performance.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Diyan Yang, Jihui Han, Jie Yin, Haoyue Xue, Jiagang Wu
Summary: The K/Na ratio can regulate the depolarization temperature and improve the temperature stability of (Bi0.5Na0.5)TiO3-based materials. The phase structure and electrical properties of Bi-0.5(Na1-xKx)(0.5)TiO3 ceramics can be modulated by changing K/Na ratio. The BNKTx system exhibits excellent piezoelectric response at the morphotropic phase boundary.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Anyang Cui, Yan Ye, Kai Dai, Yawei Li, Liangqing Zhu, Kai Jiang, Liyan Shang, Guisheng Xu, Zhigao Hu, Shujun Zhang, Junhao Chu
Summary: The study explores the development of next-generation electromechanical devices using ternary relaxor-PbTiO3 based ferroelectric crystals. Researchers have designed a monoclinic heterophase in a single crystal with optimized composition, which exhibits ultrahigh piezoelectric coefficient. Through high-resolution spectroscopic-microscopic technique, they observed two different heterophase mixtures responsible for different functionalities and correlated them with the ferroelectric-dominated and relaxor-ferroelectric-dominated nanodomain structure.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Jincymol Joseph, Zhenxiang Cheng, Shujun Zhang
Summary: NN-modified BS-BT ceramics exhibit excellent temperature stability and energy storage performance, making them promising for high temperature capacitor and dielectric energy storage applications.
JOURNAL OF MATERIOMICS
(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
Materials Science, Ceramics
Li Ma, Zhiyi Che, Chao Xu, Zhenyong Cen, Qin Feng, Xiyong Chen, Fujita Toyohisa, Jing-Feng Li, Shujun Zhang, Nengneng Luo
Summary: In this study, a strategy to reduce the consumption of silver and achieve good energy storage properties in silver niobate based ceramics was successfully demonstrated. By co-modifying with sodium and tantalum, a high recoverable energy storage density of 6.5 J/cm3 and a good energy storage efficiency of 78% were achieved in the 40Na-65Ta composition. This work promotes the commercialization potential of relaxor antiferroelectric ceramics for energy storage applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Multidisciplinary Sciences
Huajie Luo, Hui Liu, Houbing Huang, Yu Song, Matthew G. Tucker, Zheng Sun, Yonghao Yao, Baitao Gao, Yang Ren, Mingxue Tang, He Qi, Shiqing Deng, Shujun Zhang, Jun Chen
Summary: We propose an innovative strategy based on defect chemistry to achieve a giant strain of 1.12% in lead-free Bi0.5Na0.5TiO3 (BNT)-based ceramics by forming a defect-engineered morphotropic phase boundary. The incorporation of the hypothetical perovskite BaAlO2.5 with oxygen defect into BNT leads to strongly polarized directional defect dipoles, resulting in a strong pinning effect after aging. The large asymmetrical strain is mainly attributed to the aligned defect dipoles along the crystallographic [001] direction destroying the long-range ordering of the ferroelectric and promoting reversible phase transition and polarization rotation.
Article
Chemistry, Physical
Hexing Liu, Jiayu Chen, Jian Wang, Yi Sun, Cong Wang, Pengxiang Zhang, Zhonghui Shen, Xin Zhang, Bao-Wen Li, Ce-Wen Nan, Shujun Zhang
Summary: A general strategy is proposed to enhance the breakdown strength and energy density of polymer dielectric materials by coating Ca2Nb3O10 nanosheets on the surface of polyvinylidene fluoride film. The coating layers of Ca2Nb3O10 nanosheets exhibit high insulation feature, resulting in remarkably enhanced breakdown strength and discharged energy density.
MATERIALS TODAY ENERGY
(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
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
Engineering, Electrical & Electronic
Kehao Feng, Zhenghua Zhang, Guohua Bai, Xiuyuan Fan, Rongzhi Zhao, Xuefeng Zhang
Summary: This paper proposes a new method to accurately evaluate the high-frequency power loss of soft magnetic materials. Through a two-step calibration, the system is able to compensate for the phase angle discrepancy between the exciting current and induced voltage, enabling a higher power loss measurement frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Mingfang Kang, Tong Liu, Hongmei Sun, Lin Li, Keliang Wang
Summary: In this study, the absorption performance of ambient nitrogenous toxic gases on a monolayer of blue phosphorus phase germanium selenide (GeSe) was investigated using density-functional theory calculations. The results showed that GeSe monolayer exhibits higher sensitivity and selectivity for the hazardous gas NO.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Yaqiong Niu, Zhicheng Zou, Longsheng Cheng, Chaofeng Ye
Summary: This paper proposes a novel method to stabilize the laser diode output using a close-loop control with two feedbacks. The proposed method performs better for long-time operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jiajie Li, Ying Liu, Zhen Chai, Qian Cao, Renjie Li, Yueyang Zhai
Summary: This study proposed an efficient and high-quality beam-splitting method based on a diffractive optical element, enabling multichannel SERF atomic magnetometers to achieve ultra-high consistency and sensitivity. It has significant applications in array biomagnetic measurement systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
E. Oliveira, C. Doering, H. Fouckhardt
Summary: With the development of Lab on a chip technology, fluid management using dispersed droplets has become an important approach. Electrowetting on dielectric (EWOD) is one method for droplet actuation, but it requires prior definition of droplet positions. Optoelectrowetting (OEW) goes further by allowing changes in electrical parameters through impinging light spots, without the need for predefined droplet positions. This study re-evaluates the key parameters of OEW and explores their effects on droplet actuation using numerical optimization methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Haipeng Wang, Zhiguo Wang, Gancheng Zhu, Shuai Zhang
Summary: A novel capacitive proximity skin was developed to improve the performance of robotics in handling liquid-filled containers. This skin features a flexible structure that can adapt to different grippers and seamlessly integrate with Robot Operating System. Experimental results demonstrated that this proximity skin achieved data-lossless detection and contactless measurement of liquid level, making it suitable for grasping operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Tsenguun Byambadorj, Xiangyu Zhao, Yutao Qin, Yogesh B. Gianchandani
Summary: In this research, a monolithically microfabricated Knudsen pump (KP) without suspended membranes was presented. These pumps offer improved mechanical robustness, wider process window, and simplified microfabrication process compared to previous designs. The experimental results matched the modeling results well, indicating the potential for monolithic integration onto complex lab-on-a-chip systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Hamed Karami, Saeed Karami Chemeh, Vahid Azizi, Hooman Sharifnasab, Jose Ramos, Mohammed Kamruzzaman
Summary: Aroma is a significant quality trait for pharmaceutical plants and their products, indicating the quality of the raw material. An electronic nose is an efficient approach for identifying and evaluating the aroma of essential oils. In this study, tarragon was dried at different temperatures and air velocities, and the purity of tarragon essential oil was evaluated using an electronic nose. Multivariate data analysis and artificial neural networks modeling were employed to quantify and classify the obtained essential oils.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Xiaoyang Duan, Dan Xu, Wenjun Jia, Ran Li, Bohao Sun, Ruitian Yan, Wenjie Zhao
Summary: Flower-like WO3/WS2 heterojunction materials constructed via a low-temperature in-situ oxidation method exhibit significant improvements in the detection of NO2 gas in gas sensors, along with good selectivity and reproducibility.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Peng Yu, Mengyang Zhang, Manqi You, Yuxi Gao, Landong Xiao, Yan Peng, Jingxia Lai, Zhouzhao Shi, Siwei Luo, Gencai Guo, Gang Guo
Summary: Recent studies have shown that two-dimensional Janus transition metal dichalcogenides (TMDs) have great potential for applications in gas sensors. By conducting first principles calculations, this study explores the potential application of Pd-doped monolayer HfSeS as gas sensor materials for detecting CO, CO2, NH3, and NO. The results demonstrate the good thermodynamical stability and reversible adsorption of these molecules on both pristine and Pd-doped HfSeS, with Pd-doped HfSeS showing higher sensitivity towards NO due to its metallic behavior upon NO adsorption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jinlan Yang, Linjiao Li, Jun Huang, Quan Zhang, Hiba Affane
Summary: This study proposes a method for large-scale aggregation of micro-particles by creating a vortex region using low-frequency oscillation. Experimental results show that this method can achieve a large aggregation area and has the advantages of low cost and low power consumption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jitendra Singh, Saurabh Kumar Gupta, Vinita
Summary: In this investigation, a Surface Acoustic Wave (SAW) formalin gas sensor was explored for low-level formalin gas sensing applications. The sensor showed stable response and high sensitivity to formalin gas concentration, making it a reliable and useful sensor for room temperature operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Junyao Wang, Yahao Liu, Huan Liu, Qi Hou, Jianxin Xu, Hongxu Pan, Jingran Quan, Yansong Chen, Hanbo Yang, Lixiang Li
Summary: A flexible electrode with a serpentine-shaped tetra-chiral structure was designed to improve the mechanical properties and prevent mechanical fracture of flexible electrodes. The research demonstrated that this structure reduced the maximum tensile stress by 87.19% compared to the existing tetra-chiral structure. The flexible electrode remained conductive even at a strain of 70% and showed resistance values of 5 ohm and 4.4 ohm at a bending angle of 180 degrees and after 1000 fold cycles. Furthermore, the flexible electrodes showed great potential in biological signal monitoring, particularly in collecting ECG and pulse signals.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
M. S. Sikandar Bathusha, Israr Ud Din, Rehan Umer, Kamran A. Khan
Summary: Graphene-based nanomaterials are used as embedded sensors to monitor fracture behavior in composite structures. This study investigates the in-situ crack propagation and fracture behavior in a glass fiber reinforced polymer composite using embedded reduced graphene oxide coated fabrics and highly conductive graphene nanoplatelet paper.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
