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Flexible Gallium Nitride: Flexible Gallium Nitride for High‐Performance,Strainable Radio‐Frequency Devices (Adv. Mater. 47/2017)
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Nicholas R. Glavin Kelson D. Chabak Eric R. Heller Elizabeth A. Moore Timothy A. Prusnick Benji Maruyama Dennis E. Walker Jr. Donald L. Dorsey Qing Paduano Michael Snure 《Advanced materials (Deerfield Beach, Fla.)》2017,29(47)
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Nicholas R. Glavin Kelson D. Chabak Eric R. Heller Elizabeth A. Moore Timothy A. Prusnick Benji Maruyama Dennis E. Walker Jr. Donald L. Dorsey Qing Paduano Michael Snure 《Advanced materials (Deerfield Beach, Fla.)》2017,29(47)
Flexible gallium nitride (GaN) thin films can enable future strainable and conformal devices for transmission of radio‐frequency (RF) signals over large distances for more efficient wireless communication. For the first time, strainable high‐frequency RF GaN devices are demonstrated, whose exceptional performance is enabled by epitaxial growth on 2D boron nitride for chemical‐free transfer to a soft, flexible substrate. The AlGaN/GaN heterostructures transferred to flexible substrates are uniaxially strained up to 0.85% and reveal near state‐of‐the‐art values for electrical performance, with electron mobility exceeding 2000 cm2 V?1 s?1 and sheet carrier density above 1.07 × 1013 cm?2. The influence of strain on the RF performance of flexible GaN high‐electron‐mobility transistor (HEMT) devices is evaluated, demonstrating cutoff frequencies and maximum oscillation frequencies greater than 42 and 74 GHz, respectively, at up to 0.43% strain, representing a significant advancement toward conformal, highly integrated electronic materials for RF applications. 相似文献
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Ziping Wu Yonglong Wang Xianbin Liu Chao Lv Yesheng Li Di Wei Zhongfan Liu 《Advanced materials (Deerfield Beach, Fla.)》2019,31(9)
Wearable electronics have received considerable attention in recent years. These devices have penetrated every aspect of our daily lives and stimulated interest in futuristic electronics. Thus, flexible batteries that can be bent or folded are desperately needed, and their electrochemical functions should be maintained stably under the deformation states, given the increasing demands for wearable electronics. Carbon nanomaterials, such as carbon nanotubes, graphene, and/or their composites, as flexible materials exhibit excellent properties that make them suitable for use in flexible batteries. Herein, the most recent progress on flexible batteries using carbon nanomaterials is discussed from the viewpoint of materials fabrication, structure design, and property optimization. Based on the current progress, the existing advantages, challenges, and prospects are outlined and highlighted. 相似文献
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Flexible Electrodes: Roll‐to‐Roll Production of Transparent Silver‐Nanofiber‐Network Electrodes for Flexible Electrochromic Smart Windows (Adv. Mater. 41/2017)
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Sen Lin Xiaopeng Bai Haiyang Wang Haolun Wang Jianan Song Kai Huang Chang Wang Ning Wang Bo Li Ming Lei Hui Wu 《Advanced materials (Deerfield Beach, Fla.)》2017,29(41)
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Wen Xiang Lim Manukumara Manjappa Yogesh Kumar Srivastava Longqing Cong Abhishek Kumar Kevin F. MacDonald Ranjan Singh 《Advanced materials (Deerfield Beach, Fla.)》2018,30(9)
Incorporating semiconductors as active media into metamaterials offers opportunities for a wide range of dynamically switchable/tunable, technologically relevant optical functionalities enabled by strong, resonant light–matter interactions within the semiconductor. Here, a germanium‐thin‐film‐based flexible metaphotonic device for ultrafast optical switching of terahertz radiation is experimentally demonstrated. A resonant transmission modulation depth of 90% is achieved, with an ultrafast full recovery time of 17 ps. An observed sub‐picosecond decay constant of 670 fs is attributed to the presence of trap‐assisted recombination sites in the thermally evaporated germanium film. 相似文献
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Flexible Photodetectors: Low‐Temperature Heteroepitaxy of 2D PbI2/Graphene for Large‐Area Flexible Photodetectors (Adv. Mater. 36/2018)
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Jincan Zhang Yucheng Huang Zhenjun Tan Tianran Li Yichi Zhang Kaicheng Jia Li Lin Luzhao Sun Xiwen Chen Zhenzhu Li Congwei Tan Jinxia Zhang Liming Zheng Yue Wu Bing Deng Zhaolong Chen Zhongfan Liu Hailin Peng 《Advanced materials (Deerfield Beach, Fla.)》2018,30(36)
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