【摘 要】
：
Metamaterials show us that natures laws might not always be as fixed as they seem to be.One of the laws of optics,for example,states that a light ray passing fr
论文部分内容阅读
Metamaterials show us that natures laws might not always be as fixed as they seem to be.One of the laws of optics,for example,states that a light ray passing from one transparent medium to another-air to water orglass,say-is bent at the interface by an amount that depends on the so-called refractive indices of the two media.And all transparent materials have a refractive index greater than that of a vacuum (or,roughly speaking,of air),which is set equal to 1.Or do they? In the 1960s,the Russian physicist Victor Veselago explained what would be needed,in theory,for a material to have a refractive index that is not only less than 1 but in fact negative,so that it bends light the ‘wrong way’.
其他文献
Animal models are essential in research aiming to understand human biology and diseases,yet far too often clinical trials fail with drugs and therapeutic approa
12月的榕城,寒意渐浓,但浓不过戏剧人、戏剧观众的热情。根据省委关于组织改革开放以来福建省戏剧优秀作品回顾展的要求,3日至28日由省文化厅主办的“纪念改革开放三十周年福
五十年前,尹桂芳先生率领她创建的芳华越剧团,离开繁华的大上海,来到当时相当贫困、不时还战火纷飞的福建。弹指一挥间,半个世纪过去了。一代代芳华人,无论是在沐浴着阳光的
INTRODUCTIONOptical lithography is the primary tool for the fabrication of micro/nanostructures in micro-electronic and opto-electronic applications,which has f
Quantum computation was envisioned by Feynman as a valuable means of solving quantum problems [1].The question is,how do we prove the superiority of quantum com
目的 总结介入治疗布加综合征(BCS)468 例成功经验.方法 对468 例BCS 患者行下腔静脉(IVC)或经皮肝穿肝静脉(HV)造影,确定病变部位、类型,再用导丝硬头或破膜针穿通阻塞部位
2008年12月21日上午,新版《唐琬》座谈会在福建省芳华越剧团举行,文化部艺术司司长于平亲临指导,福建省文化厅副厅长陈立华与艺术处处长赵建宏,该剧编剧王仁杰、导演徐春兰,
The power of quantum computation derives from algorithmic methods that exploit the availability of quantum superposition and entanglement to perform computation
Smart phones,video,computer games,social platforms and mobile payments have dramatically changed our daily lives in the past 10 years.Behind the rise of the int
INTRODUCTION Earth observation (EO) by airborne and satellite remote sensing and in situ observations plays a fundamental role in monitoring our planet. In the last decade, machine learning has attain