2023
DOI: 10.1002/admt.202201532
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Shorted Micro‐Waveguide Array for High Optical Transparency and Superior Electromagnetic Shielding in Ultra‐Wideband Frequency Spectrum

Abstract: While functional materials with both light transmitting and electromagnetic shielding are highly desirable and have made rapid advancements, only very few of them meet the stringent electromagnetic interference (EMI) shielding criteria for optoelectronic systems. Achieving high optical transparency and superior EMI shielding in a broad frequency spectrum is a remaining challenge in both academic and industrial areas. Herein, a design strategy of shorted micro‐waveguides (SMWs) array to decouple the light trans… Show more

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Cited by 12 publications
(3 citation statements)
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“…With the arrival of the commercial fifth generation (5G) network, miniaturized and wearable/flexible electronic devices are becoming increasingly popular, posing new challenges to electromagnetic interference (EMI) shielding components. One prominent challenge is that the involved EMI shielding materials could provide a high-enough EMI shielding effectiveness (SE) at a thin thickness. ,, EMI SE is the key merit for evaluating the ability of a material to block electromagnetic waves (EMWs), which is defined as the logarithmic ratio of incident power to transmitted power, expressed in decibels (dB) . The higher the EMI SE value, the better the shielding effect and the lesser the EMW leakage .…”
Section: Introductionmentioning
confidence: 99%
“…With the arrival of the commercial fifth generation (5G) network, miniaturized and wearable/flexible electronic devices are becoming increasingly popular, posing new challenges to electromagnetic interference (EMI) shielding components. One prominent challenge is that the involved EMI shielding materials could provide a high-enough EMI shielding effectiveness (SE) at a thin thickness. ,, EMI SE is the key merit for evaluating the ability of a material to block electromagnetic waves (EMWs), which is defined as the logarithmic ratio of incident power to transmitted power, expressed in decibels (dB) . The higher the EMI SE value, the better the shielding effect and the lesser the EMW leakage .…”
Section: Introductionmentioning
confidence: 99%
“…Alongside the development in wearable sensors, biochemical sensors, flexible multimodal sensors, , and pressure sensors, the manufacturing technology and fabrication process level of sensors and circuits on flexible films have witnessed significant improvement. Among them, pressure sensors are particularly relevant to this advancement. Capacitive flexible pressure sensors, commonly used in this field, possess advantages such as simple device structure, stable signal, and low energy consumption. , As a core parameter, the sensitivity has shown significant improvement in recent research. The ionic flexible pressure sensor (IFS) introduces the electronic double layer effect (EDL) at the dielectric (such as ionic nanofibrous or gel membranes) or electrode interface, which greatly enhances sensitivity through the unique ultrahigh specific capacitance of the nanoscale ion–electron interface. Innovative design of microstructures on the ion–electron interface is one of the most effective ways to enhance sensor performance, , offering a broad range of design options, including regularly raised peaks, , microcolumn arrays, dome-like structures, , and surface patterns formed by randomly distributed microstructures (molded using sandpaper or natural templates) , due to their higher compressibility compared to just one planar dielectric layers.…”
Section: Introductionmentioning
confidence: 99%
“…They work by allowing electromagnetic waves of specific wavelengths to pass through. Traditional filters come in two main structures: a grid structure [7,8] and a metal-based structure [9,10]. The current transparent electromagnetic shielding materials, such as metal oxide conductive film and metal nanowire film materials, face a challenge in achieving high infrared transmittance and microwave shielding efficiency simultaneously.…”
Section: Introductionmentioning
confidence: 99%