【摘 要】
：
Specific topographic Ni anchoring on reduced graphene oxide (rGO) composites show an astronomical potential as effective wave absorbers due to the synergistic e
【机 构】
：
Key Laboratory of Advanced Materials Processing & Mold, Ministry of Education, National Engineering
论文部分内容阅读
Specific topographic Ni anchoring on reduced graphene oxide (rGO) composites show an astronomical potential as effective wave absorbers due to the synergistic electromagnetic loss effects.Herein,Ni/rGO composites with different topography were successfully prepared via hydrothermal in-situ reduction method.The structure and morphology characteristics revealed that particle-like,chain-like,coin-like and flower-like Ni were closely anchored onto rGO,respectively.The electromagnetic wave absorption (EMA) performance revealed that chain-like Ni/rGO exhibited the optimal reflection loss of-43.7 dB with a thickness of 1.8 mm as well as the EAB of 6.1 GHz at 2.0 mm among all samples due to the good impedance match and the synergistic dielectric and magnetic losses.Besides,one conclusion can be drawn that excellent magnetic coupling effect and impedance matching were the main reasons for significantly improving the EMA performance.Considering the systematic dependence of morphology on EMA,this work provides a perspective for designing high-performance absorbing materials.
其他文献
Selective hydrogenation of aromatic amines,especially chemicals such as aniline and bis(4-aminocyclohexyl)methane for non-yellowing polyurethane,is of particula
李少蕙大学念新闻传播,毕业后当电台DJ,然后在香港达彼思,恒美,智威汤逊及李奥贝纳从初级文案做到高级创意总监,再加入纽约ADMERASIA,回到中国,在上海继续摘星,替上海李奥贝
Plant polyphenol-based coordination polymers (CPs) with ultra-small particle size and tailorable compositions are highly desired in biomedical applications,but
近年来,社会经济发展水平的提升,使人民群众的生活水平和质量得到了极大的改善,汽车也逐渐成为家庭的标配.在这种情况下,人们对汽车的安全性提出了更高的需求,这无疑对汽车企
什么是AI艺术?rn2018年10月,全球艺术巨头佳士得拍卖行拍卖了一件特殊的艺术品.一幅名为《爱德蒙·贝拉米的肖像》的AI画作最终以43.25万美元的价格成交.巴黎艺术团体Obvious
聊天记录和虚拟币,都是资产?rn随着科技的日益发展,互联网时代改变了人们的许多生活方式,电子支付、电子邮件、掌上银行、电子钱包……“将自己的账号传给后人”似乎已经不是
A novel Pd-Fe/α-Al2O3 catalyst was synthesized by incipient-wetness impregnation method with bayberry tannin as chelating promoter and commercial hollow column
“事鬼神”,是不靠谱的rn在早期社会,虫灾经常被认为是先祖或者神灵降下的灾难,因此,古人最初的除虫手段也是以形而上的献祭祷告为主——尤其是在“事鬼神”的殷商.可想而知,
肌肉酸痛，还带延迟的？ 这个几乎会发生在所有运动者身上的现象其实有一个统一的名字——“延迟性肌肉酸痛”（DOMS，Delaved Onset Muscle Soreness）。顾名思義，这种酸痛一般出现在运动后的12～24小时，在24～72小时达到顶峰，直到运动后的5～7天逐渐消失并恢复正常。除了明显的酸痛感，可能还会伴随着肌肉僵硬、活动幅度受限的情况，从而影响随后的运动表现甚至正常的行走活动。
数学建模就是让学生运用所学数学知识去解决实际问题的一种过程。旨在引导学生把数学知识与现实问题联系起来,寻找解决途径,而这个过程本身就是一个创新的过程。因此,培养学