Flexible Gas-Permeable and Resilient Bowtie Antenna for Tensile Strain and Temperature Sensing

Xu, Hongcheng; Zheng, Weihao; Yuan, Yangbo; Xu, Dingbang; Qin, Yuxin; Zhao, Ningjuan; Duan, Qikai; Jin, Yujian; Wang, Yuejiao; Wang, Weidong; Lü, Yang; Gao, Libo

doi:10.1109/jiot.2022.3188265

Cited by 8 publications

(4 citation statements)

References 49 publications

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“…New materials such as graphene and carbon nanotubes combined with flexible materials are also used in the fields of semiconductor devices, broadband lightweight electromagnetic shielding, and smart devices.e.g. Xu et al [96] developed a flexible bow-tie antenna with high permeability and stretch resistance and prepared a low-impedance flexible carbon nanotube-silver (CNT-Ag) substrate to serve as a conductor for the antenna. By optimizing the multibeam bending geometry and wrapping it in porous thermoplastic polyurethane fibers, a five-beam antenna capable of withstanding a relatively large tensile stress of 25.2 MPa was obtained.…”

Section: Methodsmentioning

confidence: 99%

A review of research on RF MEMS for metaverse interactions

Nan,

Jia,

et al. 2024

J. Micromech. Microeng.

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Metaverse as a comprehensive integration of multiple digital technologies of the new generation, enables human beings to bring unprecedented immersive experiences with the support of virtual reality, augmented reality, blockchain, digital twin, Artificial Intelligence, haptic IoT, and human-computer interaction. In view of the urgent need for high-speed and high-capacity data transmission as well as high integration, RF MEMS devices have become the core components for metaverse system building due to their advantages of miniaturization, high integration, and low power consumption. Playing a pivotal role in real-time high-capacity data transmission and signal processing in metaverse interactive systems, the low cost and high performance of RF MEMS devices have once again become the focus of attention for people from all walks of life. Therefore, this paper focuses on the working principles and performance optimization of RF MEMS devices. Firstly, the classification and basic principles of RF MEMS devices are introduced, followed by the advanced fabrication technology and optimization scheme of MEMS devices, and then the advanced applications of RF MEMS devices in the field of metaverse are discussed in focus, including IoT mobile communication, Artificial Intelligence, and flexible wearables. Finally, the prospects and potential challenges for the development of RF MEMS devices interacting with the metaverse are summarized and discussed.

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Section: Methodsmentioning

confidence: 99%

A review of research on RF MEMS for metaverse interactions

Nan,

Jia,

et al. 2024

J. Micromech. Microeng.

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“…When developing epidermal flexible pressure sensing arrays, biocompatibility is always the first priority, and favorable stretchability of the arrays is the most important step. Therefore, stretchable structures, as one of the overall structures of sensing arrays (shown in Figure 5 D), have a broad prospect for future applications in the development of wearable devices, human-machine interaction, and other fields [ 133 , 139 ].…”

Section: Array Structures Overviewmentioning

confidence: 99%

A Review of Epidermal Flexible Pressure Sensing Arrays

Nan

Cao

et al. 2023

Biosensors

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In recent years, flexible pressure sensing arrays applied in medical monitoring, human-machine interaction, and the Internet of Things have received a lot of attention for their excellent performance. Epidermal sensing arrays can enable the sensing of physiological information, pressure, and other information such as haptics, providing new avenues for the development of wearable devices. This paper reviews the recent research progress on epidermal flexible pressure sensing arrays. Firstly, the fantastic performance materials currently used to prepare flexible pressure sensing arrays are outlined in terms of substrate layer, electrode layer, and sensitive layer. In addition, the general fabrication processes of the materials are summarized, including three-dimensional (3D) printing, screen printing, and laser engraving. Subsequently, the electrode layer structures and sensitive layer microstructures used to further improve the performance design of sensing arrays are discussed based on the limitations of the materials. Furthermore, we present recent advances in the application of fantastic-performance epidermal flexible pressure sensing arrays and their integration with back-end circuits. Finally, the potential challenges and development prospects of flexible pressure sensing arrays are discussed in a comprehensive manner.

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“…Previous studies have verified the resonant frequency or working bandwidth shifts or mismatches with varying temperatures owing to the thermal sensitivity of the substrate [ 29 , 30 , 31 , 32 , 33 , 34 ]. For example, Tchafa et al proposed a Rogers RT/duroid 5880-based copper antenna with 40.5 ppm/°C frequency changes in TM 001 mode [ 35 ] and Xu et al used a CNT-based gas-permeable and resilient bowtie antenna to achieve 0.54 MHz/°C thermal sensitivity [ 36 ]. Mitradip et al proposed a flexible temperature sensor with a sensitivity of ~1.2%/°C by a printed chipless poly (3,4-ethylenedioxythiophene):polystyrene (PEDOT:PSS)-based antenna [ 37 ].…”

Section: Introductionmentioning

confidence: 99%

Flexible Symmetric-Defection Antenna with Bending and Thermal Insensitivity for Miniaturized UAV

Nan,

Kang,

Zhang

et al. 2024

Micromachines

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Flexible conformal-enabled antennas have great potential for various developable surface-built unmanned aerial vehicles (UAVs) due to their superior mechanical compliance as well as maintaining excellent electromagnetic features. However, it remains a challenge that the antenna holds bending and thermal insensitivity to negligibly shift resonant frequency during conformal attachment and aerial flight, respectively. Here, we report a flexible symmetric-defection antenna (FSDA) with bending and thermal insensitivity. By engraving a symmetric defection on the reflective ground, the radiated unit attached to the soft polydimethylsiloxane (PDMS) makes the antenna resonate at the ISM microwave band (resonant frequency = 2.44 GHz) and conformal with a miniaturized UAV. The antenna is also insensitive to both the bending-conformal attachment (20 mm < r < 70 mm) and thermal radiation (20~100 °C) due to the symmetric peripheral-current field along the defection and the low-change thermal effect of the PDMS, respectively. Therefore, the antenna in a non-bending state almost keeps the same impedance matching and radiation when it is attached to a cylinder-back of a UAV. The flexible antenna with bending and thermal insensitivity will pave the way for more conformal or wrapping applications.

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Flexible Gas-Permeable and Resilient Bowtie Antenna for Tensile Strain and Temperature Sensing

Cited by 8 publications

References 49 publications

A review of research on RF MEMS for metaverse interactions

A review of research on RF MEMS for metaverse interactions

A Review of Epidermal Flexible Pressure Sensing Arrays

Flexible Symmetric-Defection Antenna with Bending and Thermal Insensitivity for Miniaturized UAV

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