Gap-dependent SERS effect of ordered composite plasmonic nanoparticle arrays and its application for detection of sodium saccharin

Yang Shaosong; Liu Guangqiang; Meng Luping; Wang Xing; Xiong Ying; Luo Qingping; Feng Sujuan

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Gap-dependent SERS effect of ordered composite plasmonic nanoparticle arrays and its application for detection of sodium saccharin

机译：有序复合等离子体纳米粒子阵列的间隙依赖性SERs效应及其检测糖精钠的应用

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Sodium saccharin (SS) is usually used in the field of synthetic sweeter food processing. Excessive consumption of SS may cause many health problems. Therefore, it is very necessary to achieve rapid and highly sensitive detection of SS. Here, method based on surface enhanced Raman scattering (SERS) effect using high density ordered gold wrapped polystyrene spheres (Au@PSs) composite plasmonic nanoparticle arrays as substrate, can achieve quantitative detection of SS in aqueous solution within a certain concentration range. The gap distance between two adjacent Au@PSs can be well controlled. Such arrays are fabricated by a magnetron sputtering deposition method on ordered separated PSs arrays manufactured through reactive ion etching (RIE) method. Due to the high density of sub-10 nm gaps contained in such arrays, the structure exhibits strong SERS activity. Finite difference time domain (FDTD) method calculation also confirms that the fabricated substrate possess enhanced electromagnetic field at the gap site. SERS measurement shows that the limit of detection (LoD) for SS is 10-7 M, which is far below the national standard (= 5 mg/kg approximate to 2.07 x 10-5 M). Further study shows a good linear relationship between SERS peak intensity and SS concentration in the range of 10-7 M-103 M. This study provides a new and highly sensitive SERS substrate for the simple, rapid, low cost and highly efficient detection of the SS.commentSuperscript/Subscript Available/comment

机译：糖精（SS）通常用于合成甜菜食品加工领域。 SS的过度消耗可能导致许多健康问题。因此，实现SS的快速且高度灵敏的检测是非常必要的。这里，使用高密度有序的金包覆的聚苯乙烯球（Au @ PSS）复合等离子体纳米粒子阵列作为衬底的基于表面增强拉曼散射（SERS）效应的方法，可以在一定浓度范围内达到水溶液中Ss的定量检测。两个相邻的AU @ PSS之间的间隙距离可以很好地控制。这种阵列通过磁控溅射沉积方法在通过反应离子蚀刻（RIE）方法制造的有序分离的PSS阵列上。由于这种阵列中包含的亚10 nm间隙的高密度，该结构表现出强烈的SERs活性。有限差分时域（FDTD）方法计算还证实了制造的基板在间隙位点具有增强的电磁场。 SERS测量表明，SS的检测极限（LOD）是10-7米，远低于国家标准（<= 5mg / kg近似为2.07 x 10-5 m）。进一步的研究表明，SERS峰值强度和SS浓度之间的良好线性关系在10-7 m-103米的范围内。该研究为简单，快速，低成本和高效检测提供了一种新的和高敏感的SERS基板。 SS。<注释>上标/下标可用

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来源
《Optical Materials》 |2021年第2期|110788.1-110788.7|共7页
作者
Yang Shaosong; Liu Guangqiang; Meng Luping; Wang Xing; Xiong Ying; Luo Qingping; Feng Sujuan;
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Qufu Normal Univ Sch Phys & Engn Shandong Prov Key Lab Laser Polarizat & Informat Qufu 273165 Shandong Peoples R China;

Qufu Normal Univ Sch Phys & Engn Shandong Prov Key Lab Laser Polarizat & Informat Qufu 273165 Shandong Peoples R China;

Qufu Normal Univ Sch Phys & Engn Shandong Prov Key Lab Laser Polarizat & Informat Qufu 273165 Shandong Peoples R China;

Qufu Normal Univ Sch Phys & Engn Shandong Prov Key Lab Laser Polarizat & Informat Qufu 273165 Shandong Peoples R China;

Southwest Univ Sci & Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

Southwest Univ Sci & Technol State Key Lab Environm Friendly Energy Mat Mianyang 621010 Sichuan Peoples R China;

Qufu Normal Univ Sch Phys & Engn Shandong Prov Key Lab Laser Polarizat & Informat Qufu 273165 Shandong Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
SERS; Saccharin sodium; Detection; Ordered array; Gap-controllable;

机译：sers;糖精钠;检测;有序阵列;差距控制;

Gap-dependent SERS effect of ordered composite plasmonic nanoparticle arrays and its application for detection of sodium saccharin

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