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A novel spoof surface plasmon polariton structure to reach ultra-strong field confinements 预览
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作者 Pei Hang He Hao Chi Zhang +5 位作者 Xinxin Gao Ling Yun Niu Wen Xuan Tang Jiayuan Lu Le Peng Zhang Tie Jun Cui 《光电进展(英文)》 2019年第6期9-15,共7页
Ultrathin corrugated metallic structures have been proved to support spoof surface plasmon polariton (SPP) modes on two-dimension (2D) planar microwave circuits.However,to provide stronger field confinement,larger wid... Ultrathin corrugated metallic structures have been proved to support spoof surface plasmon polariton (SPP) modes on two-dimension (2D) planar microwave circuits.However,to provide stronger field confinement,larger width of strip is required to load deeper grooves,which is cumbersome in modern large-scale integrated circuits and chips.In this work,a new spoof SPP transmission line (TL) with zigzag grooves is proposed.This new structure can achieve stronger field confinement compared to conventional one with the same strip width.In other words,the proposed spoof SPP TL behaves equivalently to a conventional one with much larger size.Dispersion analysis theoretically indicates the negative correlation between the ability of field confinement and cutoff frequencies of spoof SPP TLs.Numerical simulations indicate that the cutoff frequency of the proposed TL is lower than the conventional one and can be easily modified with the fixed size.Furthermore,two samples of the new and conventional spoof SPP TLs are fabricated for experimental demonstration.Measured S-parameters and field distributions verify the ultra-strong ability of field confinement of the proposed spoof SPP TL.Hence,this novel spoof SPP structure with ultra-strong field confinement may find wide applications in microwave and terahertz engineering. 展开更多
关键词 ULTRATHIN corrugated metallic STRUCTURE surface PLASMON POLARITONS field confinement ZIGZAG GROOVES
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Inverse opal manganese dioxide constructed by few-layered ultrathin nanosheets as high-performance cathodes for aqueous zinc-ion batteries
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作者 Hao Ren Jin Zhao +3 位作者 Lan Yang Qinghua Liang Srinivasan Madhavi Qingyu Yan 《纳米研究:英文版》 SCIE EI CAS CSCD 2019年第6期1347-1353,共7页
Considering the high safety,low-cost and high capacity,aqueous zinc ion batteries have been a potential candidate for energy storage ensuring smooth electricity supply.Herein,we have synthesized inverse opal manganese... Considering the high safety,low-cost and high capacity,aqueous zinc ion batteries have been a potential candidate for energy storage ensuring smooth electricity supply.Herein,we have synthesized inverse opal manganese dioxide constructed by few-layered ultrathin nanosheets by a solution template method at mild temperature.The ultrathin nanosheets with the thickness as small as 1 nm are well separated without obvious aggregation.Used as cathode material for aqueous zinc ion batteries,the few-layered ultrathin nanosheets combined with the inverse opal structure guarantee excellent performance.A high specific discharge capacity of 262.9 mAh·g^-1 is retained for the 100th cycle at a current density of 300 mA·g^-1 with a high capacity retention of 95.6%.A high specific discharge capacity of 121 mAh·g^-1 at a high current density of 2,000 mA·g^-1 is achieved even after 5,000 long-term cycles.The ex-situ X-ray diffraction (XRD) patterns,selected-area electron diffraction (SAED) patterns and high-resolution transmission electron microscopy (HRTEM) results demonstrate that the discharge/charge processes involve the reversible formation of zinc sulfate hydroxide hydrate on the cathode while in-plane crystal structure of the layered bimessite MnO2 could be maintained.This unique structured MnO2 is a promising candidate as cathode material for high capacity,high rate capability and long-term aqueous zinc-ion batteries. 展开更多
关键词 inverse OPAL ULTRATHIN few-layered NANOSHEETS MnO2 zinc ion batteries
超薄型钽浆阳极电容器的制备及性能分析 预览
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作者 潘齐凤 阳元江 +2 位作者 刘桥 田东斌 刘一峰 《电子器件》 CAS 北大核心 2019年第3期569-573,共5页
高体积效率、超薄型化是实现钽电容器进一步小型化的有效技术途径。基于丝网印刷技术,提出了一种新的钽阳极制作方法,即首先将高比容钽粉制成浆料,然后印刷在钽箔上进行高温烧结作为电容器的阳极片,接着利用传统的阳极氧化方法生成五氧... 高体积效率、超薄型化是实现钽电容器进一步小型化的有效技术途径。基于丝网印刷技术,提出了一种新的钽阳极制作方法,即首先将高比容钽粉制成浆料,然后印刷在钽箔上进行高温烧结作为电容器的阳极片,接着利用传统的阳极氧化方法生成五氧化二钽(Ta2O5)作为电容器的电介质,并通过多次浸渍硝酸锰、高温热分解循环被覆二氧化锰(MnO2)作为阴极材料。该方法制备的电容器其钽芯厚度最薄可以达到0.2 mm,体积效率相比传统技术提高了30%,而且经过125 ℃、2000h寿命测试,试验样品各项电性能参数稳定。基于丝网印刷工艺技术制造钽浆阳极的方法将加速钽电容器小型化和薄型化的发展。 展开更多
关键词 钽浆 丝网印刷 超薄型 体积效率 钽电容器 寿命试验
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S-1805/Ag/Au Hybrid Transparent Electrodes for ITO-free Flexible Organic Photovoltaics
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作者 WEN Xuemei YI Fangshun +3 位作者 JI Jinhai BI Yangang ZHANG Wenyi WANG Wenquan 《高等学校化学研究:英文版》 SCIE CAS CSCD 2019年第3期509-513,共5页
We fabricated an S-1805/Ag/Au hybrid transparent electrode based on 4.4 lini ultrathin Au film, which exhibited a high transparency(T=78% at 550 nm), a low sheet resistance(Rs=70Ωl/sq), and an extremely smooth surfac... We fabricated an S-1805/Ag/Au hybrid transparent electrode based on 4.4 lini ultrathin Au film, which exhibited a high transparency(T=78% at 550 nm), a low sheet resistance(Rs=70Ωl/sq), and an extremely smooth surface(roughness=0.37 nm). The three-dimensional(3D) island growth mode of 4.4 nm Au film was resisted by tlie chemical bonding effect of the nonconductive S-1805 film and the wetting behavior of 0.6 nm Ag layer. The S-1805/Ag/Au hybrid transparent electrodes were used as the replacement of ITO anodes in flexible organic photovoltaics(OPVs), and the S-1805/Ag/Au-based OP Vs resulted in the similar power conversion efficiency compared to ITO-based devices. High flexibility and mechanical robustness were demonstrated in the ITO-free OPVs without obvious degeneration in device performance after over 2000 repeated bending cycles. 展开更多
关键词 ULTRATHIN metal film HYBRID TRANSPARENT ELECTRODE FLEXIBLE organic photovoltaics
Fabrication of NiFe layered double hydroxide with well-defined laminar superstructure as highly efficient oxygen evolution electrocatalysts
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作者 Hao Zhang Haoyi Li +1 位作者 Bilal Akram Xun Wang 《纳米研究:英文版》 SCIE EI CAS CSCD 2019年第6期1327-1331,共5页
Structure-activity relationship (SAR) is the key problem of nanoscience,thus to fabricate novel and well-defined nanostructure will provide a new insight on catalyst preparation method.Highly active and low cost elect... Structure-activity relationship (SAR) is the key problem of nanoscience,thus to fabricate novel and well-defined nanostructure will provide a new insight on catalyst preparation method.Highly active and low cost electrocatalysts for oxygen evolution reaction (OER) are of great importance for future renewable energy conversion and storage.Herein,NiFe-based layered double hydroxides with laminar structure (NFLS) were successfully fabricated via a one-step hydrothermal approach by using sodium dodecyl sulfate as surfactant.The as-fabricated NFLS showed a well-defined periodic layered-stacking geometry with a scale down to 1-nm.Benefitting from the unique structure,NFLS exhibited an excellent catalytic activity towards OER with current densities of 10 mA·cm^-2 at overpotential of 197 mV.The synergistic effect of Ni and Fe plays a key role in electrode reactions.The present work provides a new insight to improve the OER performance by rational design of electrocatalysts with unique structures. 展开更多
关键词 layered double hydroxide STRUCTURE-ACTIVITY relationship ULTRATHIN nanostructure ELECTROCATALYSIS oxygen evolution reaction
Early gastric cancer diagnostic ability of ultrathin endoscope loaded with laser light source 预览
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作者 Takuto Suzuki Yoshiyasu Kitagawa +1 位作者 Rino Nankinzan Taketo Yamaguchi 《世界胃肠病学杂志:英文版》 SCIE CAS 2019年第11期1378-1386,共9页
BACKGROUND Conventionally, the low luminous intensity, low image resolution, and difficulty in operation have been reported with the ultrathin endoscope. However, it has markedly advanced recently. The improvement of ... BACKGROUND Conventionally, the low luminous intensity, low image resolution, and difficulty in operation have been reported with the ultrathin endoscope. However, it has markedly advanced recently. The improvement of the diagnostic ability is expected.AIM To compare the early gastric cancer diagnostic ability of an ultrathin endoscope loaded with a laser light source and that of the conventional endoscope.METHODS The target subjects were 375 consecutive patients who underwent endoscopy at our hospital for post-endoscopic submucosal dissection follow-up of gastric cancer from January to August 2018. During endoscopy, the ultrathin endoscope was used in 140 patients(37.3%), and the conventional endoscope was used in235 patients(62.7%). Patient background was adjusted using the propensity score matching method, and gastric cancer detection ability was evaluated in the two groups.RESULTS The gastric cancer detection rate was 7.8% in the ultrathin endoscope group and7.0% in the conventional endoscope group, and the mean intragastric observation time was 4.1 ± 1.7 min in the ultrathin endoscope group and 4.1 ± 1.9 min in the conventional endoscope group, showing no significant differences between the groups. Moreover, the biopsy implementation rate was 31.8% in the ultrathin endoscope group and 41.1% in the conventional endoscope group, and the biopsy prediction rate was 17.9% and 13.2%, respectively, showing no significant differences between the groups.CONCLUSION The gastric cancer diagnostic ability of the ultrathin endoscope loaded with a laser light source was comparable to that of the conventional endoscope. The observation time was also comparable. Thus, endoscopy using the ultrathin endoscope loaded with the laser light source would be the first option in screening examinations of gastric cancer due to its low invasion. 展开更多
关键词 CONVENTIONAL ENDOSCOPE GASTRIC cancer LASER light source Screening ULTRATHIN ENDOSCOPE
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Facile synthesis of ultrathin metal-organic framework nanosheets for Lewis acid catalysis
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作者 Xiaofei Zhang Lin Chang +7 位作者 Zhongjie Yang Yanan Shi Chang Long Jianyu Han Binhao Zhang Xueying Qiu Guodong Li Zhiyong Tang 《纳米研究:英文版》 SCIE EI CAS CSCD 2019年第2期437-440,共4页
Ultrathin metalorganic framework (MOF) nanosheets are attracting great interest in catalysis due to their unique and intriguing two-dime nsional (2D) features. Although many progresses have been achieved, it is still ... Ultrathin metalorganic framework (MOF) nanosheets are attracting great interest in catalysis due to their unique and intriguing two-dime nsional (2D) features. Although many progresses have been achieved, it is still highly desirable to develop novel strategies for controllable synthesis of the well-defined ultrathin MOF nanosheets. Herein we report a polyvinylpyrrolidone (PVP)-assisted route to synthesize the ultrathin Ni-MOF nanosheets characteristic of 1.5 nm in thickness, in which PVP is reacted with 2-aminoterephthalic acid (H2BDC-NH2) via formation of C=N bon d, followed by coord inatio n with Ni2+ io ns to form the ultrathi n MOF n anosheets. Impressively, when used in the Kno eve nagel condensation reactions of propane dinitrile with different aldehydes, ultrathin Ni-MOF nanosheets display the significantly enhanced catalytic activity and good stability in respect with the bulk Ni-MOF, mainly owing to the exposed active sites as well as facile mass transfer and diffusion of substrates and products. 展开更多
关键词 ULTRATHIN NANOSHEET METAL-ORGANIC framework Lewis acid site KNOEVENAGEL CONDENSATION
Hydrothermal Synthesized Co-Ni3S2 Ultrathin Nanosheets for Efficient and Enhanced Overall Water Splitting
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作者 JIAN Juan YUAN Long +5 位作者 LI He LIU Huanhuan ZHANG Xinghui SUN Xuejiao YUAN Hongming FENG Shouhua 《高等学校化学研究:英文版》 SCIE CAS CSCD 2019年第2期179-185,共7页
We used the one-step hydrothennal controlled synthesis method for Co-Ni3S2 ultrathin nanosheets grown directly on nickel foam(NF).The as-synthesized Co-Ni3S2/NF showed eiilianced activities in the hydrogen evolution r... We used the one-step hydrothennal controlled synthesis method for Co-Ni3S2 ultrathin nanosheets grown directly on nickel foam(NF).The as-synthesized Co-Ni3S2/NF showed eiilianced activities in the hydrogen evolution reaction(HER),oxygen evolution reaction(OER)and better overall water splitting(OWS)efficiency than the iin-doped Ni3S2/NF.the voltage of Co-Ni3S2/NF for OWS was only 1.58 V at the current density of 10 niA/cm^2 and with long time(>30 h)current output during the current-density(i-t)test.The good i-t pertonnance was also observed in both HER and OER processes.Additionally,the Co-Ni3S2/NF showed a large current density(>1A/cm^2)for both HER and OER.Wlien the current densities reached 100 and 1000 mA/cm^2,the required overpotentials tor Co-Ni3S2/NF were 0.35 and 0.75 V for OER and 0.30 and 0.85 V for HER.Therefore,after introducing Co,the activity of Ni3S2-based material was strongly enhanced. 展开更多
关键词 Co-Ni3S2/nickel tbam(NF) ULTRATHIN NANOSHEET Water splitting Hydrogen EVOLUTION REACTION Oxygen EVOLUTION REACTION
Preparation and modulation of a novel thin-walled carbon foam 预览
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作者 Zhihong Qin Peng Chang +2 位作者 Lingling Ma Lianghui Bu Zhaolan Song 《矿业科学技术学报:英文版》 CSCD 2019年第2期281-287,共7页
By foaming and carbonization processes under atmospheric pressure,a novel thin-walled carbon foam with developed foam structure was successfully prepared from loose medium component(LMC)separated from raw coal by extr... By foaming and carbonization processes under atmospheric pressure,a novel thin-walled carbon foam with developed foam structure was successfully prepared from loose medium component(LMC)separated from raw coal by extraction and back-extraction method.The influences of foaming time,carbonization time,and micromolecule content on foam structure were investigated by scanning electron microscope and mercury injection data.Moreover,foaming mechanism of LMC was analyzed and expounded.The results showed that spherical pores and uniform ultrathin pore walls constitute threedimensional foam structure of carbon foam and foam structure is developed with well connectivity.The effects of foaming time,carbonization time,and micromolecule content on foam structure are significant.Especially,average pore diameters of carbon foams prepared from the extracts of LMC are much smaller.With the rise of extraction rate,average pore diameter decreases and pore size distribution is more concentrated on the aperture section of 0-10 lm. 展开更多
关键词 Carbon foam LOOSE medium component ULTRATHIN PORE walls PREPARATION MODULATION
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Bi系低熔点玻璃粉对无机超薄膨胀型钢结构防火涂料性能的影响研究
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作者 乔浩 刘承友 +1 位作者 李洪玲 但建明 《化工新型材料》 CAS CSCD 北大核心 2019年第3期242-246,共5页
为提高无机超薄膨胀型钢结构防火涂料的防火性能,参照熔体发泡法制备泡沫陶瓷的原理,将Bi系低熔点玻璃粉作为高温熔体添加到防火涂料中,达到高温条件下为涂料膨胀提供熔体,提高涂料的膨胀倍数,优化涂料的膨胀结构,提高涂料防火性能的目... 为提高无机超薄膨胀型钢结构防火涂料的防火性能,参照熔体发泡法制备泡沫陶瓷的原理,将Bi系低熔点玻璃粉作为高温熔体添加到防火涂料中,达到高温条件下为涂料膨胀提供熔体,提高涂料的膨胀倍数,优化涂料的膨胀结构,提高涂料防火性能的目的。对添加低熔点玻璃粉防火涂料的阻燃效果、涂层结构、涂层质量热损失以及耐火时间进行分析测试。结果表明,掺加6%~8%的低熔点玻璃粉Bi2O3-B2O3-ZnO(325-390-435℃)可有效地改善防火涂层的膨胀结构和隔热性能,涂层的膨胀倍数达到10倍左右,耐火时间达到120min。热重分析表明,添加玻璃粉的防火涂料具有较高的稳定性,高温条件下残余率达77.34%。 展开更多
关键词 超薄 膨胀 耐火 低熔点玻璃粉 无机防火涂料
超薄锗片粘蜡工艺研究 预览
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作者 王云彪 陈雅楠 +1 位作者 田原 耿莉 《电子工艺技术》 2018年第5期297-300,共4页
超薄锗片是制作多结空间太阳能电池的主要衬底材料,随着空间卫星技术的不断发展,对高质量超薄锗抛光片的需求量正在逐年增加.粘蜡抛光是获得高平整度抛光片的主要手段,也是未来超薄大尺寸锗单晶片加工的必然选择.从涂蜡参数、烘烤条件... 超薄锗片是制作多结空间太阳能电池的主要衬底材料,随着空间卫星技术的不断发展,对高质量超薄锗抛光片的需求量正在逐年增加.粘蜡抛光是获得高平整度抛光片的主要手段,也是未来超薄大尺寸锗单晶片加工的必然选择.从涂蜡参数、烘烤条件、翻转吸头和压头参数影响等方面,研究蜡层厚度及均匀性和粘蜡后表面形变问题,通过调整参数,重新设计翻转吸头,确定了适合超薄锗片的粘蜡工艺,获得了高平整度的锗抛光片. 展开更多
关键词 超薄锗片 抛光片 粘蜡 表面形变 吸头
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Synthesis of ultrathin semicircle-shaped copper nanowires in ethanol solution for low haze flexible transparent conductors
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作者 Ye Zhan~ Jiangna Guo +2 位作者 Dan Xu Yi Sun Feng Yan 《纳米研究:英文版》 SCIE EI CAS CSCD 2018年第7期3899-3910,共12页
铜 nanowires (CuNWs ) 由于他们的优秀传导性和透明性为下一代的透明光设备正在成为一个不可缺少的项目。在这个工作, ultrathin 有 15 nm 和一段 30 m (2,000 的方面比率) 的一条直径的塑造半圆的铜 nanowires (SCuNWs ) 在乙醇被综... 铜 nanowires (CuNWs ) 由于他们的优秀传导性和透明性为下一代的透明光设备正在成为一个不可缺少的项目。在这个工作, ultrathin 有 15 nm 和一段 30 m (2,000 的方面比率) 的一条直径的塑造半圆的铜 nanowires (SCuNWs ) 在乙醇被综合答案。影响 SCuNWs 的形态学和 dispersity 的机制和因素被调查。准备 SCuNWs 在聚乙烯 terephthalate (宠物) 或 polydimethylsiloxane (PDMS ) 底层上是涂的制作灵活透明售票员(FTC ) 。制作 FTC 展出了优秀 optoelectrical 性能和低薄雾。另外,制作 FTC 在拉长并且弯曲期间显示出高机械的稳定性,显示他们在灵活光设备的大潜力。 展开更多
关键词 售票员 乙醇 合成 光设备 透明性 传导性 形态学
平板集热器超薄化分析和设计 预览
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作者 王凌 张轲 +1 位作者 赵彩霞 邵芳芳 《节能技术》 CAS 2018年第6期536-539,共4页
为提高平板集热器(FPC)的建筑构件化程度。本文构建了单层盖板平板集热器(FPC)热损失模型,分析了盖板到吸热体的间距L、保温层厚度E等对FPC热损的影响规律。根据顶部热损Ut在Lmin=10±2mm时有最小值的结论,并结合保温材料导热系数... 为提高平板集热器(FPC)的建筑构件化程度。本文构建了单层盖板平板集热器(FPC)热损失模型,分析了盖板到吸热体的间距L、保温层厚度E等对FPC热损的影响规律。根据顶部热损Ut在Lmin=10±2mm时有最小值的结论,并结合保温材料导热系数的测试结果,制作了1#FPC(厚度80mm,保温材料为50mm岩棉)和2#FPC(厚度50mm,保温材料为10mm真空绝热板(VIP板)两款集热器,通过基于集热器采光面积的瞬时效率η曲线方程,表明两者效率截距η0,和总热损系数a基本一致。证明了超薄FPC(50mm)设计的合理性,能够满足FPC的实际应用要求。 展开更多
关键词 平板集热器 减薄 保温材料 真空绝热板 热损
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800万像素超薄非球面手机镜头设计 预览
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作者 邱鑫 王艳 《科技创新导报》 2018年第20期74-76,78共4页
为了满足市场对高像素超薄手机镜头的需求,基于美国专利US8274593B2作为初始结构,采用控制变量法,分别控制非球面曲率半径、高次非球面系数、圆锥系数及镜片厚度,设计了一款800万像素超薄非球面手机镜头。该镜头光学总长为4.7mm,空间频... 为了满足市场对高像素超薄手机镜头的需求,基于美国专利US8274593B2作为初始结构,采用控制变量法,分别控制非球面曲率半径、高次非球面系数、圆锥系数及镜片厚度,设计了一款800万像素超薄非球面手机镜头。该镜头光学总长为4.7mm,空间频率为150lp/mm时,全视场的MTF值大于0.2,相对畸变小于0.9031%,最大视场的相对照度达到了63.2%,全视场的弥散斑半径均小于4.1μm,镜头不仅超薄且可获得优良的成像质量。 展开更多
关键词 非球面 超薄 手机镜头
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基于电阻膜与超材料的超薄宽频吸波体设计 预览
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作者 张泽奎 王东红 +1 位作者 王蓬 李宝毅 《功能材料》 CSCD 北大核心 2018年第4期4213-4216,共4页
设计了一种基于多层电阻膜和超材料的超薄宽频吸波体模型。该吸波体由两层含介质基板的电阻膜片和一层一阶Minkowski分形双方环(minkowski fractal double square loop,MFDSL)电谐振器结构组成,各层电阻膜片阻值相同,但外形不同。仿真... 设计了一种基于多层电阻膜和超材料的超薄宽频吸波体模型。该吸波体由两层含介质基板的电阻膜片和一层一阶Minkowski分形双方环(minkowski fractal double square loop,MFDSL)电谐振器结构组成,各层电阻膜片阻值相同,但外形不同。仿真分析结果表明,该吸波体对1.2~20 GHz频段内垂直入射的电磁波的吸收率均大于90%;同时对于45°角入射的TE和TM波仍能保持良好的吸收性能,具有宽入射角特性和极化不敏感的特点,且厚度仅有1 mm。另外,对不同电阻膜片阻值得分析结果表明,随着电阻膜片阻值的增大,该吸波体的吸波效果更好,吸波性能更加稳定。 展开更多
关键词 电阻膜 超材料 超薄 宽频带 吸波
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Flexible ultrathin all-solid-state supercapacitors
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作者 Rui Wang QingRong Wang +5 位作者 MinJie Yao KeNa Chen XinYu Wang Li-Li Liu ZhiQiang Niu Jun Chen 《稀有金属:英文版》 SCIE EI CAS CSCD 2018年第6期536-542,共7页
灵活 ultrathin 有好电气化学、机械的性能的所有固态的 supercapacitors 被灵巧的方法制作。单个墙的碳 nanotubes (SWCNT )-polyaniline (PANI ) 电影电极并且 poly (乙烯基白酒)(PVA )/H <sub>3</sub > PO <sub>4&... 灵活 ultrathin 有好电气化学、机械的性能的所有固态的 supercapacitors 被灵巧的方法制作。单个墙的碳 nanotubes (SWCNT )-polyaniline (PANI ) 电影电极并且 poly (乙烯基白酒)(PVA )/H <sub>3</sub > PO <sub>4</sub> 电解质电影被准备由打印水花并且纺纱涂层策略分别地。因此, supercapacitor 的厚度仅仅是 8.4 ? m。当到 PANI 的 SWCNT 的集体比率是 1:1 时,张力的力量和电极的幼仔模量是 10.9 和 655 ? MPa 分别地。supercapacitors 的内部接触抵抗仅仅基于这个电极是 15-30。而且,这个电极的特定的电容能到达大约 355.5 ? F 展开更多
关键词 固态 电气化学 POLY PANI 状态显示 存储设备 电极 乙烯基
高阶HDI印制电路对基板材料性能的新要求 预览
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作者 陈世金 《印制电路信息》 2018年第A02期461-467,共7页
HDI板在智能手机、医疗电子、汽车电子等多个领域得到广泛应用,随着终端消费者对电子产品提出越来越多的需求,加之HDI在新型领域的应用逐步推广.这就对HDI制作技术、设备和HDI电路板使用的板材等提出了越来越高的要求。HDI印制电路... HDI板在智能手机、医疗电子、汽车电子等多个领域得到广泛应用,随着终端消费者对电子产品提出越来越多的需求,加之HDI在新型领域的应用逐步推广.这就对HDI制作技术、设备和HDI电路板使用的板材等提出了越来越高的要求。HDI印制电路对材料的高频高速、超薄化和稳定性等方面有了更多、更高的新要求.为的是满足电子产品的高密度封装、多功能化、小型化和高可靠性等。从而赢得客户的信赖及抢占更多的市场份额。 展开更多
关键词 板材 多功能化 可靠性 高频高速 超薄化 稳定性
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顺序注塑成型技术改善超薄笔记本外壳质量的研究 预览 被引量:2
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作者 黄珍媛 肖尧 +2 位作者 陈邑 汪智勇 杨金表 《塑料工业》 CAS CSCD 北大核心 2017年第1期53-56,79共5页
超薄笔记本外壳相比其他塑料件而言具有表面积大、厚度很薄的特点,为了实现其平衡填充,需要采用多浇口浇注系统。但是在多浇口注塑成型过程中,普通的冷流道浇注系统很容易使制品表面产生大量的熔接痕,严重影响塑件的外观质量和力学... 超薄笔记本外壳相比其他塑料件而言具有表面积大、厚度很薄的特点,为了实现其平衡填充,需要采用多浇口浇注系统。但是在多浇口注塑成型过程中,普通的冷流道浇注系统很容易使制品表面产生大量的熔接痕,严重影响塑件的外观质量和力学性能。提出将热流道顺序阀控制技术应用于超薄笔记本外壳的多浇口注塑成型,以提升制件表面质量。通过Moldflow模流分析软件对针阀顺序控制过程进行模拟,并对各个阀浇口的开关时间进行优化,有效地减少和消除笔记本外壳表面的熔接痕和气泡,最终提高笔记本外壳的质量和性能。最后将优化后的方案投入试生产,所得到的结果与模拟预测结果基本一致。 展开更多
关键词 超薄 笔记本外壳 熔接痕 多浇口 顺序注塑成型
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超薄电子玻璃工厂电气节能设计 预览
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作者 张卫 李燕红 陈济丰 《建材世界》 2017年第5期32-36,49共6页
该文从供配电系统设计、控制系统设计、照明系统设计、能效管理系统设计、光伏发电系统设计等方面,分析了超薄电子玻璃工厂电气节能设计的主要措施以及节能设计产生的经济效益。
关键词 超薄 玻璃工厂 节能
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High-efficiency organic light-emitting diodes based on ultrathin blue phosphorescent modification layer
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作者 朱云柯 钟建 +3 位作者 雷疏影 陈辉 邵双双 林宇 《中国物理B:英文版》 SCIE EI CAS CSCD 2017年第8期395-399,共5页
Yellow organic light-emitting devices(YOLEDs) with a novel structure of ITO/MoO_3(5 nm)/NPB(40 nm)/TCTA(15 nm)/CBP:(tbt)_2Ir(acac)(x%)(25 nm)/FIrpic(y nm)/TPBi(35 nm)/Mg:Ag are fabricated. The ultrathin blue phosphore... Yellow organic light-emitting devices(YOLEDs) with a novel structure of ITO/MoO_3(5 nm)/NPB(40 nm)/TCTA(15 nm)/CBP:(tbt)_2Ir(acac)(x%)(25 nm)/FIrpic(y nm)/TPBi(35 nm)/Mg:Ag are fabricated. The ultrathin blue phosphorescent bis[(4,6-difluorophenyl)-pyridi-nato-N,C2■](picolinate) iridium(Ⅲ)(FIrpic) layer is regarded as a highperformance modification layer. By adjusting the thickness of FIrpic and the concentration of (tbt)_2Ir(acac), a YOLED achieves a high luminance of 41618 cd/m~2, power efficiency of 49.7 lm/W, current efficiency of 67.3 cd/A, external quantum efficiency(EQE) of 18%, and a low efficiency roll-off at high luminance. The results show that phosphorescent material of FIrpic plays a significant role in improving YOLED performance. The ultrathin FIrpic modification layer blocks excitons in EML. In the meantime, the high triplet energy of FIrpic(2.75 eV) alleviates the exciton energy transport from EML to FIrpic. 展开更多
关键词 有机电致发光器件 磷光材料 超薄 修饰 蓝光 外部量子效率 MoO3 功率效率
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