Article
Engineering, Electrical & Electronic
Akash Buragohain, Gouree Shankar Das, Yatish Beria, Ahmed Jamal Abdullah Al-Gburi, Partha Protim Kalita, Trishna Doloi
Summary: This paper presents a highly sensitive differential Hexagonal Split Ring Resonator (HSRR) sensor operating at 5.3 GHz for characterizing the permittivity of organic liquids. The sensor design is based on a hexagonal shape, which allows for better field concentration and power transfer. The sensor is capable of accurately determining the complex permittivity of unknown liquid samples with high sensitivity and immunity to environmental fluctuations.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Chemistry, Analytical
Mohammad Alibakhshikenari, Bal S. Virdee, Taha A. Elwi, Innocent D. Lubangakene, Renu K. R. Jayanthi, Amer Abbood Al-Behadili, Zaid A. Abdul Hassain, Syed Mansoor Ali, Giovanni Pau, Patrizia Livreri, Sonia Aissa
Summary: This paper presents a non-invasive measurement technique to determine the permittivity of materials based on a modified metamaterial unit-cell sensor. By tightly coupling opposite sides of the sensor, two distinct resonant modes are excited, and perturbation of the fundamental mode is used to determine the permittivity. The sensitivity of the sensor is enhanced four-fold by constructing a tri-composite split-ring resonator.
Article
Chemistry, Analytical
Khuzairi Masrakin, Siti Zuraidah Ibrahim, Hasliza A. Rahim, Saidatul Norlyana Azemi, Ping Jack Soh, Sugchai Tantiviwat
Summary: This paper analyzes a microwave resonator sensor based on a square split-ring resonator operating at 5.122 GHz for permittivity characterization of a material under test (MUT). A single-ring square resonator edge (S-SRR) is coupled with several double-split square ring resonators to form the structure (D-SRR). The function of the S-SRR is to generate a resonant at the center frequency, whereas D-SRRs function as sensors, with their resonant frequency being very sensitive to changes in the MUT's permittivity.
Article
Engineering, Electrical & Electronic
Xueyun Han, Xiaosong Li, Yingping Zhou, Zhongjun Ma, Peidong Peng, Chenghao Fu, Lei Qiao
Summary: This article proposes a planar microwave sensor loaded with a complementary curved ring resonator (CCRR) for measuring the permittivity of substrate materials, which shows promising application in the field of permittivity measurement.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Mohammad Abdolrazzaghi, Nir Katchinskiy, Abdulhakem Y. Elezzabi, Peter E. Light, Mojgan Daneshmand
Summary: The study demonstrates the use of microwave sensors for monitoring glucose concentration in serum with high sensitivity and resolution, capable of detecting lower concentrations of glucose. This technique could be valuable for developing noninvasive glucose sensors for real-time monitoring in biomedical applications.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Weina Liu, Junjie Zhang, Kama Huang
Summary: A dual-band sensor based on a planar rectangular cavity loaded with pairs of improved planar resonators is used to measure the permittivity difference of liquids with a small volume. The sensor can detect changes in the dielectric characteristics of liquids and classify liquids, with a miniaturized design.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Physics, Applied
S. S. Olokede, M. L. Neyestana, Marco Chu, M. Daneshmand, H. E. Naguib
Summary: A cylindrical dual-mode planar microwave ring resonator designed for a permanent moisture sensor shows stability and accuracy through optimization and experimental validation.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Arezoo Hosseini, Omid Niksan, Kasra Khorsand Kazemi, Mandeep Chhajer Jain, Kishor Kumar Adhikari, Mohammad Hossein Zarifi
Summary: This study presents an alternative approach to reduce the near-field coupling of SRRs by positioning them in the Fresnel zone of two antennas, leading to improved sensitivity and resolution of the sensing platform.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Xingyun Zhang, Cunjun Ruan, Yunhao Cao
Summary: This study introduces a low-cost, compact, and high sensitivity dual-mode microwave sensor for edible oil determination and quality monitoring. The sensor operates at 12.6 GHz and 16.2 GHz, with a measured sensitivity as high as 7.4% and 9.9% at first and second resonance, respectively. The estimated error of dielectric constant is less than 0.28%, making this sensor a cost-effective and accurate solution.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Astronomy & Astrophysics
Moein Navaei, Pejman Rezaei, Sina Kiani
Summary: This paper evaluates the human milk dielectric constant using a microwave sensor. The proposed sensor combines a simple microstrip line and a split ring resonator, with a resonance frequency of 6 GHz. When up to 30 μl of milk is placed on the sensing area of the sensor, it causes a shift in the resonance frequency. The dielectric constant of six human milk samples was measured using a network analyzer, and three similar samples were measured using the built-in sensor. The microwave sensor has a Q-factor of 38 and a sensitivity of 0.17%. It demonstrates acceptable performance compared to previous sensors, providing a simple method for determining the normal behavior of human milk with a small sample requirement.
Article
Chemistry, Analytical
Alejandro Rivera-Lavado, Alejandro Garcia-Lamperez, Maria-Estrella Jara-Galan, Emilio Gallo-Valverde, Paula Sanz, Daniel Segovia-Vargas
Summary: This paper proposes a low-cost passive sensor for real-time permittivity characterization of hydrocarbon fluids. The sensor's characterization is performed through both full-wave simulation and measurements, demonstrating its effectiveness in discriminating different types of crude and estimating their properties.
Article
Computer Science, Information Systems
Ammar Armghan, Turki M. Alanazi, Ahsan Altaf, Tanveerul Haq
Summary: The work presents a compact, inexpensive, and efficient dual band microwave sensor based on CSSRR structures, with high Q factor and wide sensing range. The sensor operates at 5.35 GHz and 7.99 GHz dual bands, detecting frequency shifts in transmission mode and conducting sensitivity analysis on common dielectric substrates.
Article
Materials Science, Multidisciplinary
Maryam Moradpour, Ehsan Hosseini, Mandeep C. Jain, Rakesh Narang, Nicolas Tanguy, Mohammad H. Zarifi
Summary: In this study, an all-organic and environmentally friendly microwave split-ring resonator (SRR) was developed using the conducting polymer PEDOT:PSS, with optimized performance in solid and gas sensing applications. The fabricated organic microwave resonators (OMRs) showed scalability and sensitivity, and could potentially replace traditional metal-based resonators in various scenarios.
APPLIED MATERIALS TODAY
(2021)
Article
Engineering, Environmental
Benjamin D. Wiltshire, Kiana Mirshahidi, Anupama Vijaya Nadaraja, Sadaf Shabanian, Roozbeh Hajiraissi, Mohammad Hossein Zarifi, Kevin Golovin
Summary: This study demonstrates that embedded sensors within protective fabrics can more fully characterize liquid repellency while simultaneously detecting hazardous substances, enhancing the performance of personal protective equipment.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Xiaoming Liu, Dan Zhang, Shuo Yu, Chen Wang, Xiaofan Yang, Ye Wang
Summary: A dual-band resonant sensor has been developed for measuring low permittivity materials, with the capability to measure in the range of 2-10. By adding a square patch, the local field is enhanced, resulting in improved sensitivity. The sensor demonstrates high accuracy and sensitivity, surpassing existing designs.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Computer Science, Artificial Intelligence
Mohammad Abdolrazzaghi, Soheil Hashemy, Ali Abdolali
NEURAL COMPUTING & APPLICATIONS
(2018)
Article
Engineering, Electrical & Electronic
Mohammad Abdolrazzaghi, Mojgan Daneshmand
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2018)
Article
Chemistry, Analytical
Mohammadreza Fayaz, Masoud Jahandar Lashaki, Mohammad Abdolrazzaghi, Mohammad H. Zarifi, Zaher Hashisho, Mojgan Daneshmand, James E. Anderson, Mark Nichols
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Chemistry, Analytical
Mohammad Abdolrazzaghi, Mojgan Daneshmand
Article
Engineering, Electrical & Electronic
Zahra Abbasi, Hamid Niazi, Mohammad Abdolrazzaghi, Weixing Chen, Mojgan Daneshmand
IEEE SENSORS JOURNAL
(2020)
Article
Engineering, Electrical & Electronic
Nazli Kazemi, Mohammad Abdolrazzaghi, Petr Musilek, Mojgan Daneshmand
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2020)
Article
Engineering, Electrical & Electronic
Mohammad Abdolrazzaghi, Mojgan Daneshmand
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2020)
Article
Engineering, Electrical & Electronic
Mohammad Abdolrazzaghi, Nir Katchinskiy, Abdulhakem Y. Elezzabi, Peter E. Light, Mojgan Daneshmand
Summary: The study demonstrates the use of microwave sensors for monitoring glucose concentration in serum with high sensitivity and resolution, capable of detecting lower concentrations of glucose. This technique could be valuable for developing noninvasive glucose sensors for real-time monitoring in biomedical applications.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Nazli Kazemi, Mohammad Abdolrazzaghi, Petr Musilek
Summary: This study utilizes machine learning algorithms to address the vulnerability of planar microwave sensors to ambient temperature changes and its impact on material perception. By conducting experiments on a wide range of dielectric constant concentrations and accurately classifying material types while predicting temperatures, the proposed scheme successfully investigates the limit of detection. The final hyperparameter optimization identifies multilayer perceptron (MLP) and support vector machine (SVM) as the best performing algorithms with accuracies of 0.97 and 0.99, respectively.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2021)
Review
Chemistry, Analytical
Mohammad Abdolrazzaghi, Vahid Nayyeri, Ferran Martin
Summary: This review article provides a comprehensive outlook on various methodologies to enhance the sensitivity, resolution, and robustness of arbitrary microwave sensors. Practical approaches with prototype examples are presented, and the main applications of these procedures are reported. Sensors implementing the proposed techniques show higher performance for high-end and real-life use.
Article
Chemistry, Analytical
Mohammad Abdolrazzaghi, Nazli Kazemi, Vahid Nayyeri, Ferran Martin
Summary: This research investigates the use of artificial intelligence to improve the selectivity of microwave sensors for liquid mixture sensing. By incorporating a regenerative amplifier, the quality factor of the microwave sensor was significantly improved. A deep neural network (DNN) was used to characterize binary mixtures, while a convolutional neural network (CNN) was employed for ternary mixtures, resulting in enhanced selectivity.
Proceedings Paper
Engineering, Electrical & Electronic
Mohammad Abdolrazzaghi, Nazli Kazemi, Mojgan Daneshmand
2019 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Mohammad Abdolrazzaghi, Mojgan Daneshmand
2019 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Mohammad Abdolrazzaghi, Mojgan Daneshmand
2018 IEEE MTT-S INTERNATIONAL MICROWAVE WORKSHOP SERIES ON ADVANCED MATERIALS AND PROCESSES FOR RF AND THZ APPLICATIONS (IMWS-AMP)
(2018)
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)
