Article
Engineering, Electrical & Electronic
Thibault P. Delhaye, Nicolas Andre, Laurent A. Francis, Denis Flandre
Summary: This article introduces a new classification methodology for high resolution membrane based MEMS piezoresistive pressure sensors, based on a new figure of merit (FoM) that allows for evaluating the ultimate limit of detection of a technology. The proposed FoM is validated through extensive literature survey and comparisons, showing that wet etching techniques outperform reactive ion etching in membrane release for higher performance.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Byeongwook Jo, Hidetoshi Takahashi, Tomoyuki Takahata, Isao Shimoyama
Summary: The article describes an angular accelerometer with high sensitivity and low crosstalk using a MEMS piezoresistive cantilever and spiral liquid channels. By increasing the number of turns of the spiral channel, high sensitivity and low crosstalk from the nontarget axis can be achieved.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Xingyin Xiong, Xudong Zou, Zheng Wang, Kunfeng Wang, Zhitian Li, Wuhao Yang
Summary: This paper introduces a novel method to improve the sensitivity of MRAs by utilizing the electrostatic spring softening effect, which can enhance the sensitivity of the prototype device without sacrificing mechanical robustness or increasing the size of the device. Experimental results show that by applying a sensitivity enhancing bias voltage of 67V in a linear scale range of +/- 1 g, the sensitivity of the prototype device increased from 492.7 Hz/g to 2277 Hz/g.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Peng Wang, Yujun Yang, Manlong Chen, Changming Zhang, Nan Wang, Fan Yang, Chunlei Peng, Jike Han, Yuqiang Dai
Summary: To meet the measurement needs of multidimensional high-g acceleration in fields such as weapon penetration, aerospace, and explosive shock, a biaxial piezoresistive accelerometer incorporating tension-compression is meticulously designed. The study thoroughly examines the tension-compression measurement mechanism and designs the sensor's sensitive structure. It develops a signal test circuit to effectively mitigate cross-interference and applies the finite element method to analyze the structure and obtain the performance indices of the sensor.
Article
Engineering, Electrical & Electronic
Qinpeng Liu, Wangfei Liu, Chunfang Wang, Rong Zhang, Wei Fan, Dakuan Yu, Xueguang Qiao
Summary: A high-quality accelerometer based on Fiber Bragg Grating (FBG) has been designed, with good response characteristics, high main-axis sensitivity, and low cross sensitivity. It is suitable for low-frequency oil and gas seismic exploration due to its wide frequency range, high sensitivity, and low fluctuation.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Cheng Li, Bo Yang, Xiang Zheng, Zhenyu Sun, Luqiang Zhou, Xin Huang, Xin Guo
Summary: This work presents the development of a force-rebalanced micro-optics accelerometer using interferometry. The device achieves force feedback control through a grating-based MEMS interferometer and a soft robber magnet. It demonstrates improved performance and compact size, making it highly applicable for microseismic observations in confined environments.
IEEE SENSORS JOURNAL
(2022)
Article
Physics, Multidisciplinary
Upasana Rani, Peeyush Kumar Kamlesh, Tarun Kumar Joshi, Sheetal Sharma, Rajeev Gupta, Samah Al-Qaisi, Ajay Singh Verma
Summary: In this study, the authors investigated the inherent properties of antiperovskite materials, such as bulk modulus, lattice constant, density of states, band gap, effective mass, refractive index, dielectric constant, extinction coefficient, and absorption coefficient, using density functional theory-based first-principles calculations. These materials exhibit high absorption in the Visible, Ultraviolet, and Near Infrared regions, making them promising for optoelectronic devices.
Article
Chemistry, Physical
Nurlan Tokmoldin, Joachim Vollbrecht, Seyed Mehrdad Hosseini, Bowen Sun, Lorena Perdigon-Toro, Han Young Woo, Yingping Zou, Dieter Neher, Safa Shoaee
Summary: This research shows that the fill factor of organic solar cells is closely related to the long-range carrier drift and diffusion lengths, and a simple method using steady-state photoconductance measurements can determine these characteristic lengths and the fill factor. While a straightforward approach can improve the fill factor of organic solar cells, their limitation lies in the small diffusion lengths of photogenerated carriers.
ADVANCED ENERGY MATERIALS
(2021)
Article
Acoustics
Inno Odira, James Keraita, Jean Byiringiro
Summary: In this study, we propose a novel solution to the vibration rectification error (VRE) in quasi-static applications of capacitive MEMS accelerometers. By integrating a multimode thermoelastic damping (TED)-tuned beam mass damper (TBMD), the VRE caused by asymmetric railing can be effectively compensated. Numerical simulations suggest that the higher the mode shapes of the TED-damped tuned beam mass damper, the better the damping effect and the vibration rectification factor.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Engineering, Electrical & Electronic
Zhenyu Sun, Cheng Li, Luqiang Zhou, Xin Huang, Bo Yang
Summary: This article presents the design of an electromagnetic feedback optical MEMS accelerometer with temperature control. The device consists of two single accelerometer chips assembled via manual microassembly. The electromagnetic feedback control system ensures linear operation, and the temperature control system maintains a stable operating temperature. Experimental results show that the device has high voltage sensitivity, wide dynamic range, low noise floor, and good bias stability. This device has significant potential in seismic and gravity measurements.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Awatef Khlifi, Aftab Ahmed, Brahim Mezghani, Rajul Patkar, Pradeep Dixit, Fares Tounsi, Maryam Shojaei Baghini
Summary: This paper investigates the static and dynamic performances of a new enhanced design of 3-axis MEMS polymer piezoresistive accelerometer. The key geometric parameters are optimized using a developed numerical finite element model (FEM). The results show that the proposed design has improvements in induced stress fields compared to similar silicon-based designs found in literature. With a low-cost and simple fabrication process-flow provided, this design shows potential for practical applications.
MICROELECTRONICS JOURNAL
(2022)
Article
Physics, Condensed Matter
Peeyush Kumar Kamlesh, Ruchita Gautam, Sarita Kumari, Ajay Singh Verma
Summary: The study investigates the properties of XScZ half-Heusler compounds using density functional theory. It reveals that these semiconductors are suitable for optoelectronic devices and thermoelectric applications, showing high figure of merit.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
Peeyush Kumar Kamlesh, Rohit Agrawal, Upasana Rani, Ajay Singh Verma
Summary: The study investigates the structural, mechanical, thermal stability, electronic, optical, and thermoelectric properties of AlNiX half-Heusler compounds. The compounds exhibit metallic behavior with good mechanical and thermal stability, making them suitable for applications in photovoltaic devices and UV radiation shields.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Deepak Bansal, Prem Kumar, Amit Kumar
Summary: In order to further develop RF MEMS technology, it is necessary to determine scaling laws based on the working principles of different devices to optimize device performance. Current research focuses on deriving spring constant scaling laws for electrostatic RF MEMS devices to improve switch response and address limitations of MEMS technology.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Qiu Wang, Zongfeng Li, Huafeng Liu, Qiangwei Xu, Shitao Yan, Leiming Zhang, Shaolin Zhang, Xiaoxiao Song, Ziqiang Qu, Li Liu, Jinquan Liu, Liangcheng Tu
Summary: This article introduces a MEMS acceleration sensor with lower noise floor and larger input range for use in spaceborne scientific experiments in microgravity environment. The performance of MEMS-M-3 has been verified on the ground and in orbit, suitable for active vibration isolation systems for spaceborne scientific experiments and other space applications.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
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)