Effect of asymmetrical nanostructures on detecting the optical rotational properties of large biofilament structures
Effect of asymmetrical nanostructures on detecting the optical rotational properties of large biofilament structures
复制标题
不对称纳米结构对检测大型生物丝结构旋光特性的影响
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
E. H. Khoo
中科院分区：
文献类型：
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作者：
Yan Jun Liu;S. Wu;D. Popp;E. Leong;Y. Hor;W. K. Phua;K. L. Mok;Jinghua Teng;R. Robinson;E. Li;E. H. Khoo
本文介绍了锥形不对称伽马离子对生物分子结构旋光特性和灵敏度检测的影响。该不对称结构由玻璃结构上的金材料组成，并浸入水中。首先通过测量圆二色性 (CD) 光谱来确定未旋转阵列的手性。观察到由布洛赫周期理论和表面共振模式产生的三种模式。然后，每个不对称伽马迪翁结构在臂处逐渐变细。锥度分数定义了锥形端与非锥形端的比率，用于定义新设计。然后使用电子束光刻技术制造设计，并使用旋光计进行圆二色光谱测试。光谱显示三种 CD 模式的幅度和波长发生变化，特别是对于较小的锥度部分。
In this paper, the effect of tapered asymmetrical gammadion on the optical rotational properties and sensitivity detection of biomolecular structures is presented. The asymmetrical structure is made up of gold material on a glass structure and immersed in water. The chirality of the un-rotated array is first determined by measuring the circular dichroism (CD) spectrum. Three modes, arising from Bloch periodic theory and surface resonance mode are observed. Then each asymmetrical gammadion structure is tapered at the arms. Tapering fraction, which define the ratio of tapered end to the untapered end is used for defining the new design. The designs are then fabricated using e-beam lithography and tested using the polarimeter for CD spectra. The spectra show that the three CD modes changes in degree amplitude and wavelength, especially for smaller tapering fractions.