磁性金属蝴蝶鳞片磁控光学响应效应  

The optical response of Co-plated butterfly wing scales controlled by a magnetic field

作　　者：杨林[1] 陈建军[1] 顾佳俊[1] 张荻[1] 

机构地区：[1]上海交通大学金属基复合材料国家重点实验室,上海200240

出　　处：《科学通报》2014年第25期2499-2504,共6页Chinese Science Bulletin

基　　金：国家自然科学基金(51271116;51171110);国家重点基础研究发展计划(2012CB619600)资助

摘　　要：多种蝴蝶鳞片具有三维跨尺度的亚微米结构,可在不同方向上呈现不同颜色,表现结构色特征.为了充分利用这一天然构造,本文以蝴蝶鳞片为模板,通过化学原位合成法,在鳞片表面成功地镀覆一层磁性金属钴,使得蝴蝶鳞片兼具结构色与磁性特征.进而可通过外加磁场人工控制磁性金属鳞片的角度和方向,使其反射不同颜色的可见光.该结果可为具有自然生物体三维亚微米结构的新型"磁光开关"的设计提供新思路.Most Morpho butterfly wings are vividly iridescent, which means that the wings appear to change color as the angle of view changes. Wing scales were used as templates and could be plated successfully with a homogeneous layer of magnetic Co metal through a series of chemical treatments and in situ synthesis so that the iridescent characteristics can be used in real applications. The thin layer of metal Co nanoparticles provides the wing scales with iridescent and magnetic properties. In this investigation, we show that the Co-plated wing scales can be moved from a fiat to an upright position when they are exposed to an externally applied magnetic field. This property is fundamental for the design of a new conceptual device, the magnetic-light switch.

关 键 词：蝴蝶鳞片 结构色 磁光开关 

分 类 号：TB306[一般工业技术—材料科学与工程]