Anisotropic magnetic liquid metal film for wearable wireless electromagnetic sensing and smart electromagnetic interference shielding

Zhu, Ruiqi; Li, Zhenyang; Deng, Gao; Yu, Yuanhang; Shui, Jianglan; Yu, Rong; Pan, Caofeng; Liu, Xiaofang

doi:10.1016/j.nanoen.2021.106700

Cited by 171 publications

(86 citation statements)

References 39 publications

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“…It has further contributed to developing flexible electronics, especially tactile sensors. [ 1–4 ] Up to now, tactile sensors have made significant breakthroughs with novel features such as stretchable, [ 5–7 ] self‐healing, [ 8,9 ] self‐powered, [ 10,11 ] and multi‐functional properties. [ 12–14 ] Most of these tactile sensors must require battery storage to provide energy if they continuously collect information.…”

Section: Introductionmentioning

confidence: 99%

Fully Fibrous Large‐Area Tailorable Triboelectric Nanogenerator Based on Solution Blow Spinning Technology for Energy Harvesting and Self‐Powered Sensing

Tao

Liu

et al. 2022

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An all‐fibrous large‐area (20 × 50 cm2) tailorable triboelectric nanogenerator (LT‐TENG) is prepared using a one‐step solution blow spinning technology, which has the advantages of easy operation, scale‐up in the area, and high production efficiency. The prepared LT‐TENG is composed of polyvinylidene fluoride (PVDF)/MXene (Ti3C2Tx) nanofibers (NFs) and conductive textile. Benefiting from the fibrous materials and large‐area properties, the LT‐TENG possesses the merits of good tailorability, breathability, hydrophobicity, and washability. When optimized by mixing the MXene into PVDF NFs, the LT‐TENG has a preferable output and sensing property, with a detection range over 16 kPa and a relatively high sensitivity of 12.33 V KPa−1. At maximum applied pressure, the voltage, current, and charge are 108 V, 38 µA, and 35 nC, respectively. This LT‐TENG can serve as a biomechanical energy harvester when used as wearable devices with an output power density of 12.6 mW m−2 at an external load resistance of 500 MΩ, and it also has the ability of self‐powered tactile sensing for pressure mapping and slide sensing. Thus, this LT‐TENG exhibits great potential prospects in wearable devices, intelligent robots, and human–machine interaction.

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Section: Introductionmentioning

confidence: 99%

Fully Fibrous Large‐Area Tailorable Triboelectric Nanogenerator Based on Solution Blow Spinning Technology for Energy Harvesting and Self‐Powered Sensing

Tao

Liu

et al. 2022

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“…45 Previous research studies on EMI shields gradually tend to be more suitable for massive application scenarios, such as hightemperature resistance, [46][47][48][49][50][51] corrosion resistance, [52][53][54][55][56] transparency, [57][58][59][60][61] flexibility, [62][63][64][65][66][67] and wearable performance. [68][69][70][71][72] Song et al reported cellulose carbon aerogel@reduced graphene oxide (CCA@rGO) aerogel/polydimethylsiloxane composites exhibiting excellent EMI shielding performance with EMI shielding effectiveness (SE) up to 51 dB. 5 The skin-core structure of CCA@rGO aerogels contributes to great prospects for applications in lightweight, flexible EMI shielding composites.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in 3D printed structures for electromagnetic wave absorbing and shielding

Zhou

Zhang

Nie

et al. 2022

Mater. Chem. Front.

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“…With the blossoming of wireless communications in recent years, human beings are facing with ever-growing electromagnetic radiations generated by various digital devices that rise significant issues to physical health and disturbed electromagnetic compatibility. − In addition, increasingly fierce military competition has also promoted technological upgrading of radar system which brings early detection threat to aircrafts and armored vehicles. , Facing the increasing complexity of the electromagnetic environment, it is extremely desirable to develop an advanced electromagnetic stealth technology that can adaptively trap the energy of electromagnetic waves at liberty. One of the exciting breakthrough is the emergence of metamaterial and metasurface devices that greatly enhance the capabilities for controlling electromagnetic waves and open up new horizons.…”

Section: Introductionmentioning

confidence: 99%

Graphene-Based Optically Transparent Metasurface Capable of Dual-Polarized Modulation for Electromagnetic Stealth

Zhang

Shao

et al. 2022

ACS Appl. Mater. Interfaces

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Microwave stealth technology with optical transparency is of great significance for solar-powered aircrafts (e.g., satellites or unmanned aerial vehicles) in increasingly complex electromagnetic environments. By coating them with optically transparent absorbing materials or devices, these large-sized solar panels could avoid detection by radar while maintaining highly efficient collection of solar energy. However, conventional microwave-absorbing materials/devices for solar panels suffer from bulky volume and fixed stealth performance that significantly hinders their practicality or multifunctionality. Particularly, dynamic modulation of microwave absorption for dual polarization remains a challenge. In this paper, we propose the design, fabrication, and characterization of an optically transparent and dynamically tunable microwave-absorbing metasurface that enables dual modulations (amplitude and frequency) independently for two orthogonal linearly polarized excitations. The tunability of the proposed metasurface is guaranteed by an elaborately designed anisotropic meta-atom composed of a patterned graphene structure whose electromagnetic responses for different polarizations can be dynamically and independently controlled via bias voltages. The dual tunability in such a graphene-based absorbing metasurface is experimentally measured, which agrees well with those numerical results. We further build an equivalent lumped circuit model to analyze the physical relation between the tunable sheet resistance of graphene and the polarization-independent modulations of the metasurface. Taking into account the advantages of optical transparency and flexibility, the proposed microwave-absorbing metasurface significantly enhances the multitasking stealth performance in complex scenarios and has the potential for advanced solar energy devices.

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Anisotropic magnetic liquid metal film for wearable wireless electromagnetic sensing and smart electromagnetic interference shielding

Cited by 171 publications

References 39 publications

Fully Fibrous Large‐Area Tailorable Triboelectric Nanogenerator Based on Solution Blow Spinning Technology for Energy Harvesting and Self‐Powered Sensing

Fully Fibrous Large‐Area Tailorable Triboelectric Nanogenerator Based on Solution Blow Spinning Technology for Energy Harvesting and Self‐Powered Sensing

Recent advances in 3D printed structures for electromagnetic wave absorbing and shielding

Graphene-Based Optically Transparent Metasurface Capable of Dual-Polarized Modulation for Electromagnetic Stealth

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