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Open-Ended Coaxial Probe Technique for Dielectric Measurement of Biological Tissues: Challenges and Common Practices [PDF]

Diagnostics, 2018
Electromagnetic (EM) medical technologies are rapidly expanding worldwide for both diagnostics and therapeutics. As these technologies are low-cost and minimally invasive, they have been the focus of significant research efforts in recent years.
Alessandra La Gioia, Emily Porter, Ilja Merunka, Atif Shahzad, Saqib Salahuddin, Marggie Jones, Martin O’Halloran   +6 more
doaj   +2 more sources

Effect of the Annealing Conditions on the Strain Responses of Lead-Free (Bi_0.5Na_0.5)TiO₃–BaZrO₃ Ferroelectric Thin Films

Crystals, 2023
Bismuth sodium titanate (Bi0.5Na0.5)TiO3 (BNT)–based thin films have attracted large attention for the production of modern precise micro–devices due to their outstanding strain responses.
Zhe Wang, Jinyan Zhao, Wei Ren
doaj   +1 more source

The Vertically Heteroepitaxial Structure for Lead-Free Piezoelectric K_0.5Na_0.5NbO₃ Films

Crystals, 2023
The effect of epitaxial strain on the electrical properties of ferroelectric films has been widely investigated. However, this kind of strain is generally attributed to the substrate clamping constraints and is easily relaxed when the thickness of films ...
Zhe Wang, Lingyan Wang, Wei Ren, Chao Li, Yi Quan, Kun Zheng, Jian Zhuang   +6 more
doaj   +1 more source

Controlled Measurement Setup for Ultra-Wideband Dielectric Modeling of Muscle Tissue in 20–45 °C Temperature Range

Sensors, 2021
In order to design electromagnetic applicators for diagnostic and therapeutic applications, an adequate dielectric tissue model is required. In addition, tissue temperature will heavily influence the dielectric properties and the dielectric model should,
Gertjan Maenhout, Tomislav Markovic, Bart Nauwelaers   +2 more
doaj   +1 more source

Heterogeneous Skin Phantoms for Experimental Validation of Microwave-Based Diagnostic Tools

Sensors, 2022
Considerable exploration has been done in recent years to exploit the reported inherent dielectric contrast between healthy and malignant tissues for a range of medical applications.
Jasmine Boparai, Milica Popović
doaj   +1 more source

Highly heterogeneous epitaxy of flexoelectric BaTiO3-δ membrane on Ge

Nature Communications, 2022
The integration of epitaxial complex oxides on semiconductor and flexible substrates is required but challenging. Here, the authors report the highly heterogeneous epitaxy of transferrable BaTiO3-δ membrane with enhanced flexoelectricity on Ge (011).
Liyan Dai, Jinyan Zhao, Jingrui Li, Bohan Chen, Shijie Zhai, Zhongying Xue, Zengfeng Di, Boyuan Feng, Yanxiao Sun, Yunyun Luo, Ming Ma, Jie Zhang, Sunan Ding, Libo Zhao, Zhuangde Jiang, Wenbo Luo, Yi Quan, Jutta Schwarzkopf, Thomas Schroeder, Zuo-Guang Ye, Ya-Hong Xie, Wei Ren, Gang Niu   +22 more
doaj   +1 more source

W-Band Sensor for Complex Permittivity Measurements of Rod Shaped Samples

IEEE Access, 2021
A novel W-band sensor for complex permittivity measurements of rod shaped samples based on reflectometer method is described. Characterization of dielectric materials around 100 GHz is quite a challenge.
Yevhen Yashchyshyn, Krzysztof Derzakowski, Changying Wu, Grzegorz Cywinski   +3 more
doaj   +1 more source

Effect of Open-Ended Coaxial Probe-to-Tissue Contact Pressure on Dielectric Measurements

Sensors, 2020
Open-ended coaxial probes are widely used to gather dielectric properties of biological tissues. Due to the lack of an agreed data acquisition protocol, several environmental conditions can cause inaccuracies when comparing dielectric data. In this work,
Gertjan Maenhout, Tomislav Markovic, Ilja Ocket, Bart Nauwelaers   +3 more
doaj   +1 more source

Research on assessment method for main insulation state of converter transformer based on time‐frequency domain dielectric response

IET Science, Measurement & Technology, 2023
The converter transformer is an essential part of the DC transmission system. Compared with the traditional oil‐impregnated AC transformer, the main insulation of the converter transformer bears more complex electric field aging stress during long‐term ...
Yizhou Zhang, Hao Yun, Mingze Zhang, Shengjie Lei, Yufei Sun   +4 more
doaj   +1 more source

A quasi‐optical resonator with new coupling method and parasitic‐mode‐suppressing in 110–170 GHz

Electronics Letters, 2023
In this paper, a quasi‐optical resonator with new coupling method and parasitic‐mode‐suppressing in 110–170 GHz is proposed. The coupling of terahertz (THz) quasi‐optical resonator in this paper is realized by PCB substrate processing and pressurized ...
Jin Cheng, Yunpeng Zhang, Jiawei Long, En Li   +3 more
doaj   +1 more source