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Rotating 1-D magnetic photonic crystal balls with a tunable lattice constant
Nanoscale ( IF 5.8 ) Pub Date : 2017-06-14 00:00:00 , DOI: 10.1039/c7nr03335d Wei Luo 1, 2, 3, 4, 5 , Jindan Yan 1, 2, 3, 4, 5 , Yali Tan 1, 2, 3, 4, 5 , Huiru Ma 3, 4, 6, 7, 8 , Jianguo Guan 1, 2, 3, 4, 5
Nanoscale ( IF 5.8 ) Pub Date : 2017-06-14 00:00:00 , DOI: 10.1039/c7nr03335d Wei Luo 1, 2, 3, 4, 5 , Jindan Yan 1, 2, 3, 4, 5 , Yali Tan 1, 2, 3, 4, 5 , Huiru Ma 3, 4, 6, 7, 8 , Jianguo Guan 1, 2, 3, 4, 5
Affiliation
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The responsive photonic crystal (RPC) balls with adjustable lattice constant and controllable rotation developed to date are all based on Janus particles of three dimensional (3-D) periodical structures, which suffer from color uneveness and asymmetric volume change, limiting the applications in the fields of encoding, sensing and displays. In this study, we have developed the first 1-D magnetic photonic crystal balls with tunable lattice constants by fixing collectively oriented periodical 1-D magnetic nanochain-like structures in responsive polymer poly(N-isopropylacrylamide) hydrogel balls under magnetic field (H) and UV irradiation. The structural colors of the balls are uniform on the entire ball and can be regulated by temperature (T) and solvents. The as-prepared RPC balls always retain a perfectly spherical shape even when the hydrogel volume changes with stimuli because of the low content of the included 1-D magnetic nanochain-like structures. This endows smooth rotation in the H direction to switch “on/off” their structural colors at various stimuli, as demonstrated by a colorful display application at temperature ranging from 10 to 35 °C. The as-developed RPC balls are expected to have promising potential applications in color display, rewritable signage, biological and chemical sensors owing to their excellent multi-response properties.
中文翻译：
具有可调晶格常数的旋转一维磁性光子晶体球
迄今为止，具有可调晶格常数和可控旋转的响应式光子晶体（RPC）球均基于三维（3-D）周期性结构的Janus粒子，这些粒子遭受颜色不均匀和体积不对称变化的困扰，从而限制了其在原子光学领域的应用。编码，感应和显示领域。在这项研究中，我们通过在磁场（H）下将集体取向的周期性1-D磁性纳米链状结构固定在响应性聚合物聚（N-异丙基丙烯酰胺）水凝胶球中，开发了第一个具有可调晶格常数的1-D磁性光子晶体球。和紫外线照射。球的结构颜色在整个球上是均匀的，并且可以通过温度（T）和溶剂。所制备的RPC球始终保持完美的球形，即使水凝胶的体积因刺激而变化，这是因为所含的1-D磁性纳米链状结构的含量较低。这赋予了在H方向上的平滑旋转，以在各种刺激下“打开/关闭”其结构颜色，如彩色显示应用在10至35°C的温度范围内所证明的。由于其出色的多响应特性，预计已开发的RPC球在彩色显示器，可擦写标牌，生物和化学传感器中具有广阔的应用前景。
更新日期：2017-07-14
中文翻译：
具有可调晶格常数的旋转一维磁性光子晶体球
迄今为止，具有可调晶格常数和可控旋转的响应式光子晶体（RPC）球均基于三维（3-D）周期性结构的Janus粒子，这些粒子遭受颜色不均匀和体积不对称变化的困扰，从而限制了其在原子光学领域的应用。编码，感应和显示领域。在这项研究中，我们通过在磁场（H）下将集体取向的周期性1-D磁性纳米链状结构固定在响应性聚合物聚（N-异丙基丙烯酰胺）水凝胶球中，开发了第一个具有可调晶格常数的1-D磁性光子晶体球。和紫外线照射。球的结构颜色在整个球上是均匀的，并且可以通过温度（T）和溶剂。所制备的RPC球始终保持完美的球形，即使水凝胶的体积因刺激而变化，这是因为所含的1-D磁性纳米链状结构的含量较低。这赋予了在H方向上的平滑旋转，以在各种刺激下“打开/关闭”其结构颜色，如彩色显示应用在10至35°C的温度范围内所证明的。由于其出色的多响应特性，预计已开发的RPC球在彩色显示器，可擦写标牌，生物和化学传感器中具有广阔的应用前景。
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