【摘 要】
:
We present double-connective dendritic unit pairs which exhibit the left-handed property for electromagnetic wave normal incidence. Based on the tunable charact
【机 构】
:
Department of Applied Physics,Northwestern Polytechnical University,Xi’an 710072
论文部分内容阅读
We present double-connective dendritic unit pairs which exhibit the left-handed property for electromagnetic wave normal incidence. Based on the tunable characteristics of electrorheological fluids (ERF) as the electric field, we experimentally study the influence of the distance of electrodes, the number of stacked layers, and the intensity of the exteal electric field upon the ERF to the left-handed transmission peak of the double-connective dendritic structure. The results show that the transmission could be enhanced with the increase of distance or the number of layers. Furthermore, by changing the intensity of the electric fields, the left-handed transmission peak can be modulated actively, and the maximum shift is up to 160 MHz.
其他文献
今年是国家恢复高考四十周年。四十年来,高考命题、招生制度不断调整、优化,人才培养与选拔机制日趋科学与理性,让我们看到了可喜的变化与努力。 2014年9月,国务院发布《关于深化考试招生制度改革的实施意见》,确定浙沪两地为全国高考综合改革试点省市,今年则更是被称为“新高考元年”。其中,如浙江实行以专业平行投档录取,考生最多可报80个志愿。可见,新高考致力于强化学生的选择自由,使“学其想学,考其所长”
Structures of polyimide (6051) films modified by irradiation of 2.0 MeV Si ions with different fluences are studied in detail. Variations of the functional grou
用萌发率为100%的Kalyan Sona品种籽粒,用1%Hgcl_2灭菌,经蒸馏水充分漂洗后,置蒸馏水与室温(约25℃)下吸涨24小时后,保持在5±2℃下冷处理5、10、15灭,与未处理的对照同时播种
The visual quality of human eyes is much restricted by high-order aberrations as well as low-order aberrations (defocus and astigmatism), but each term of high-
武汉市江汉区北湖小学教师涂丽玲上课时不慎摔倒,致尾椎骨折,不能久站又不能坐下。为不影响班上51个孩子的学习进度,涂丽玲跪在椅子上讲课,近三个星期没有落下一节课,全班学生及家长为之感动。(5月12日《武汉晨报》) 涂丽玲老师的“跪椅上课”,使我想起太多的教师挂吊瓶上课、拉吊绳上课、坐轮椅上课、拄拐杖上课、打石膏上课等感人事迹。他们的敬业精神和奉献精神理应受到全社会的赞誉。可是,当赞美铺天盖地汇于这
On the basis of a Rayleigh scattering model for a single nanoparticle illuminated by a TEM00 laser beam, we theoretically and numerically study the speckle form
我们学校地处偏僻,中午很多孩子回不了家,就在学校午休。孩子们很多时候不愿呆在教室里休息,但迫于管制,他们一声不响地“困”在课室里。每当午休结束铃声响起,孩子们的激情瞬间爆发,他们像是泄了闸的洪水咆哮而出,整个校园霎时沸腾起来。不久后,学校就颁布新的制度规定:禁止学生午休结束时发出喊叫声,违者将被扣除本班“行为模范”荣誉。于是,每次的午休結束,校园里便不再喧闹了。 这不禁让我想到曾经在公园看到的一
2015年,随着“撤点并校”政策的推进,原本拥有几百名师生的贵州省兴仁县回龙镇塘山村村小被并到臨近村小,校舍一度荒废。据悉,从1997年到塘山村村小撤销的2015年,全国小学由62.88万所减至19.05万所。星星点点的村小在地图上逐渐消失,闲置校舍的处理成为一道难题。(5月24日《中国青年报》) 去年,笔者特地回了一趟乡下老家,去看了40年前的启蒙小学。它位于雪峰山深处,十多年前一直有1-4年
We present an experimental study on coherent beam combining of three watt-level fiber amplifiers using a stochas-tic parallel gradient descent (SPGD) algorithm.