Article
Engineering, Electrical & Electronic
Pawel Kopyt, Bartlomiej Salski, Jerzy Krupka
Summary: This article presents a new, more precise method for measuring the complex permittivity components of isotropic and anisotropic laminar materials, as well as an analysis of sources of measurement uncertainty with recommendations.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2022)
Article
Materials Science, Ceramics
Jakkree Boonlakhorn, Supinya Nijpanich, Prasit Thongbai, Pornjuk Srepusharawoot
Summary: In this study, Y2/3Cu3Ti4O12 ceramics were fabricated using a modified sol-gel method, and their structural, dielectric, and electrical parameters were systematically investigated. The results showed a fine-grained ceramic microstructure and high dielectric permittivity in the sintered samples. Density functional theory calculations and experimental verification revealed the presence of oxygen vacancies and charge compensation mechanisms in the ceramics, which might contribute to the semiconductive region and high dielectric permittivity. The findings suggest the potential application of Y2/3Cu3Ti4O12 in electronic devices.
CERAMICS INTERNATIONAL
(2022)
Article
Instruments & Instrumentation
Sachin Seth, Apala Banerjee, Nilesh K. Tiwari, M. Jaleel Akhtar
Summary: A tunable automated standalone RF sensor system based on ANN is proposed, achieving a higher tuning range with a modified design configuration. The ANN is trained using S-parameters of various dielectric samples as a training dataset, providing reasonably accurate results for the extracted complex permittivity.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Materials Science, Ceramics
Lin Zhou, Mingjia Jiang, Yaqiong Sun, Dong Yang, Jinhua Xu, Zhanhui Peng, Di Wu, Lingling Wei, Pengfei Liang, Xiaolian Chao, Zupei Yang
Summary: In this study, various (Cu0.5W0.5)xTi1-xO2 (CWTOx) ceramics were fabricated by a traditional solid reaction method, showing a high permittivity (epsilon r>104), low dielectric loss (tan delta < 0.1), and good temperature stability within a broad frequency/temperature range for CWTO0.015 ceramic, which meets the application requirement of X8R. Abnormal dielectric relaxation phenomena at low and high temperature regions were explained by interface polarization and ionization of oxygen vacancies, respectively, and the CP performance of CWTOx ceramics was predominantly influenced by the interface barrier layer capacitance effect according to complex impedance, XPS, and EPR results. This finding is expected to promote the further development and application of CP materials.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Dandan Gao, Jian Wang, Jiyang Xie, Wanbiao Hu
Summary: By incorporating Ca2+ into LiCuNb3O9, the material exhibits polyvalent Cu cations and different local states and conduction behaviors. All compositions show similar room-temperature CP response, but with two dielectric relaxations.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Katy S. Gerace, Michael T. Lanagan, John C. Mauro
Summary: Understanding the mechanisms contributing to dielectric properties of glasses is critical for designing new compositions for microwave frequency applications. In this work, dielectric permittivity was measured for a series of niobiosilicate glasses with varying compositions. The calculations of polarizability and experimental results reveal that SiO2 polarizability depends on the chemistry and connectivity of the glass, which has important implications for designing glass compositions for microwave frequency applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Xue-Quan Huang, Mei-Zhen Xiao, Fu-Chang Chen, Qin Shi, Xiao He
Summary: In this article, a new method for measuring permittivity using multiple TMmn0 modes of the cylindrical cavity is proposed. The TMmn0 modes have more degrees of freedom compared to traditional modes, enabling multifrequency measurement using just a single cavity. By strategically positioning the substrate, the TM220, TM430, TM540, and TM460 modes of the cavity can be perturbed simultaneously, allowing for multifrequency measurement. A numerical method based on perturbation theory is presented for achieving high-precision measurement. Experimental results show competitive accuracy compared to traditional methods.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Physics, Multidisciplinary
Pankaj Kumar Tripathi, Kunwar Vikram, Mithlesh Tiwari, Ajay Shriram
Summary: The dielectric properties of the nematic mesophase with bias voltage were investigated, showing that the dielectric permittivity increases significantly at a temperature of 56 degrees C due to the interaction between the linking group of nematic molecules and the applied bias voltage. The presence of bias voltage results in an enhanced dielectric permittivity in nematic liquid crystal, indicating an increase in dipole moment.
Article
Multidisciplinary Sciences
Jean Paul Djioko, Jacques Atangana, Helene Carole Edima
Summary: The spectral analysis of dielectric materials based on the modified Debye model is studied in this paper. It is found that the ten-order Debye model presents an asymmetric loss curve and a double relaxation peak, indicating the presence of multiple relaxation phenomena. Increasing resistance and capacitors stabilizes the material and reduces instability, highlighting the dielectric material response.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Ceramics
Zichen He, Minghe Cao, Eugene Furman, Michael T. Lanagan, Hua Hao, Zhonghua Yao, Zhiyong Yu, Hanxing Liu
Summary: The dielectric properties of SrTiO3 ceramics prepared by plasma-activated sintering were investigated. The material exhibited high permittivity and low dielectric loss, with one mode being sensitive to humidity and the other mode showing abnormal slowing down of relaxation rate with increasing temperature.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Multidisciplinary Sciences
Lingjie Duan, Junsheng Duan, Ming Li
Summary: In this paper, a new relaxation model was proposed by expressing the relaxation function in the time domain in terms of the Mittag-Leffler functions. The proposed model represents a group of non-Debye relaxation phenomena and shows a transition between the CC and the KWW models. The relaxation properties described by the new model are analyzed.
Article
Materials Science, Ceramics
Jie Li, Ying Tang, Zhiwei Zhang, Weishuang Fang, Laiyuan Ao, Aihong Yang, Laijun Liu, Liang Fang
Summary: Two cubic garnet-structured Sr3B2Ge3O12 ceramics (SYG and SHG) synthesized by high temperature solid-phase reaction method were studied for their phase formation, sintering behavior, and microwave dielectric performance. The SYG and SHG ceramics exhibited different dielectric properties, with their negative temperature coefficient of resonant frequency (τf) values tuned to near-zero by adjusting their intrinsic dielectric properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Electrical & Electronic
Jin Cheng, Yunpeng Zhang, Jiawei Long, En Li
Summary: In this paper, a quasi-optical resonator with a new coupling method and parasitic-mode-suppressing in 110-170 GHz is proposed. The coupling of the terahertz (THz) quasi-optical resonator is achieved through PCB substrate processing and pressurized flange. Furthermore, the parasitic mode is effectively suppressed by slitting the plane mirror to minimize its impact on the main mode during testing. The feasibility of the system for complex dielectric testing of materials in the 110-170 GHz range is demonstrated through the testing of a fused quartz sample.
ELECTRONICS LETTERS
(2023)
Article
Materials Science, Textiles
Prabir K. Mukherjee, Srijan Das
Summary: By studying the dielectric properties of different textile materials and the dielectric permittivity of water-polyester mixture, it can be concluded that the experimental results in this theoretical paper show excellent agreement with the calculated results.
JOURNAL OF THE TEXTILE INSTITUTE
(2021)
Article
Materials Science, Ceramics
Qingyang Tang, Zhicheng Shi, Mingli Han, Qifa He, Davoud Dastan, Yao Liu, Runhua Fan
Summary: In this study, three-layer BaTiO3/SrTiO3 ceramic composites were fabricated and the effects of SrTiO3 modification on their phase structures, microstructures and dielectric performance were investigated. The results showed that SrTiO3 doping can refine the grain size of BaTiO3 ceramics and increase their permittivity and dielectric loss. The high permittivity and low loss make these composites promising candidates for microwave antennas, field effect transistors and dielectric capacitors.
CERAMICS INTERNATIONAL
(2023)
Article
Biochemistry & Molecular Biology
Natalia Naumova, Hanna Hlukhova, Alexander Barannik, Alexey Gubin, Irina Protsenko, Nickolay Cherpak, Svetlana Vitusevich
BIOCHIMICA ET BIOPHYSICA ACTA-GENERAL SUBJECTS
(2019)
Article
Physics, Condensed Matter
Yurii Kutovyi, Ihor Zadorozhnyi, Volodymyr Handziuk, Hanna Hlukhova, Nazarii Boichuk, Mykhaylo Petrychuk, Svetlana Vitusevich
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2019)
Article
Nanoscience & Nanotechnology
F. Gasparyan, N. Boichuk, S. Vitusevich
Article
Chemistry, Multidisciplinary
Ya. Shchur, O. Pavlyuk, A. S. Andrushchak, S. Vitusevich, A. V. Kityk
Article
Biophysics
Yurii Kutovyi, Hanna Hlukhova, Nazarii Boichuk, Marcus Menger, Andreas Offenhaeusser, Svetlana Vitusevich
BIOSENSORS & BIOELECTRONICS
(2020)
Article
Multidisciplinary Sciences
Yurii Kutovyi, Ignacio Madrid, Ihor Zadorozhnyi, Nazarii Boichuk, Soo Hyeon Kim, Teruo Fujii, Laurent Jalabert, Andreas Offenhaeusser, Svetlana Vitusevich, Nicolas Clement
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Multidisciplinary
Jie Li, Yurii Kutovyi, Ihor Zadorozhnyi, Nazarii Boichuk, Svetlana Vitusevich
ADVANCED MATERIALS INTERFACES
(2020)
Article
Physics, Applied
Yurii Kutovyi, Ignacio Madrid, Nazarii Boichuk, Soo Hyeon Kim, Teruo Fujii, Laurent Jalabert, Andreas Offenhaeusser, Svetlana Vitusevich, Nicolas Clement
Summary: With the fast shrinking of transistor dimensions, the importance of low-frequency noise suppression techniques like Single-trap phenomena (STP) in nanoscale devices is highlighted. By optimizing gate voltages and conditions, useful signals can be extracted from background noise through a stochastic switching effect.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Yurii Kutovyi, Volodymyr Piatnytsia, Nazarii Boichuk, Ihor Zadorozhnyi, Jie Li, Mykhailo Petrychuk, Svetlana Vitusevich
Summary: This study investigates the impact of channel doping concentration on the capture process of charge carriers by a single trap in liquid-gated silicon nanowire structures, revealing a significant effect of the channel doping concentration on the single-trap dynamic. An analytical model is developed to explain the enhancement of sensitivity for single-trap phenomena biosensing with an increase in channel doping concentration, opening prospects for advanced single trap-based devices.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Alexey Gubin, Irina A. Protsenko, Alexander A. Barannik, Nickolay T. Cherpak, Svetlana A. Vitusevich
Summary: This study proposes and develops a multifrequency microwave characterization technique for measuring the complex permittivity of small volumes of liquid using a single quartz whispering-gallery-mode resonator and a microfluidic chip. The technique is calibrated and applied to investigate the complex permittivity of L-lysine in water solutions.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2022)
Article
Engineering, Electrical & Electronic
Ahmed Medhat, Dina Salah, Nazarii Boichuk, Ibrahim Hassan, Svetlana Vitusevich, Amal Kasry
Summary: A new electronic pH sensor utilizing a hybrid film of graphene nanoplatelets and gold nanoparticles as the active layer has been developed, showing an enhanced sensitivity compared to previous sensors. The increase in sensitivity is attributed to the n-doping of the GP layer by the Au nanoparticles, leading to an increase in surface potential of the sensor.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Yurii Kutovyi, Li Jie, Ihor Zadorozhnyi, Hanna Hlukhova, Nazarii Boichuk, Dmytro Yehorov, Marcus Menger, Svetlana Vitusevich
Proceedings Paper
Engineering, Electrical & Electronic
I. Protsenko, A. Barannik, N. Cherpak, A. Gubin, D. Kireev, S. Vitusevich
2019 49TH EUROPEAN MICROWAVE CONFERENCE (EUMC)
(2019)
Article
Quantum Science & Technology
V. V. Korotyeyev, Yu M. Lyaschuk, V. A. Kochelap, L. Varani, D. Coquillat, S. Danylyuk, S. Brose, S. A. Vitusevich
SEMICONDUCTOR PHYSICS QUANTUM ELECTRONICS & OPTOELECTRONICS
(2019)
