Ultrasmooth Gold Nanogroove Arrays: Ultranarrow Plasmon Resonators with Linewidth down to 2 nm and Their Applications in Refractive Index Sensing

Shen Yang; He Kai; Zou QiushunXing ShanHuang JiayuanZheng ManchunShe XiaoyiJin Chongjun

首页> 外文期刊>Advanced functional materials >Ultrasmooth Gold Nanogroove Arrays: Ultranarrow Plasmon Resonators with Linewidth down to 2 nm and Their Applications in Refractive Index Sensing

【24h】

Ultrasmooth Gold Nanogroove Arrays: Ultranarrow Plasmon Resonators with Linewidth down to 2 nm and Their Applications in Refractive Index Sensing

机译：Ultrasmooth Gold Nanogroove Arrays: Ultranarrow Plasmon Resonators with Linewidth down to 2 nm and Their Applications in Refractive Index Sensing

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Plasmonic nanostructures offer an enticing prospect in many applications, ranging from lasing to biosensing, due to their unrivaled light concentration beyond the diffraction limit. However, this promise is substantially undercut by the intrinsically high losses in metals. Here, an experimental ultra-high-Q plasmon resonance with a linewidth down to 2 nm (Q-factor approximate to 350) and a resonance intensity of 51% in an ultrasmooth gold nanogroove array is reported. Such an experimental ultranarrow resonance arises from two key factors. First, a geometrical-induced coupling between the Fabry-Perot and Wood's anomaly modes significantly suppresses the groove array's radiative damping. Second, an ultrasmooth gold surface fabricated by template stripping minimizes its surface scattering and grain boundary scattering. Benefiting from this ultranarrow resonance, a figure of merit (FOM) of 284 and an FOM* of 617 in refraction index (RI) sensing under normally incident detection are demonstrated, the former of which is the record FOM in all reported broad-RI-range plasmonic RI sensors. The array is further demonstrated as a surface thickness sensor for detecting mercaptocarboxylic acids with the surface sensitivity of 0.18 nm/CH2, which suggests that the array is a promising platform for thickness detection of surface analytes and label-free biomedical sensing.

著录项

来源
《Advanced functional materials》 |2022年第10期|2108741.1-2108741.12|共12页
作者
Shen Yang; He Kai; Zou QiushunXing ShanHuang JiayuanZheng ManchunShe XiaoyiJin Chongjun;
展开▼
作者单位

Sun Yat Sen Univ, Sch Mat Sci & Engn, Guangzhou Key Lab Flexible Elect Mat & Wearable D, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China;

Sun Yat Sen Univ, Sch Mat Sci & Engn, Guangzhou Key Lab Flexible Elect Mat & Wearable D, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China|Sun Yat Sen Univ, Collaborat Innovat Ctr Canc Med, State Key Lab Oncol South China;

展开▼
收录信息
原文格式 PDF
正文语种英语
中图分类
关键词
decay rate; grating; grooves; plasmonic resonance; quality factor; refraction index sensing;

Ultrasmooth Gold Nanogroove Arrays: Ultranarrow Plasmon Resonators with Linewidth down to 2 nm and Their Applications in Refractive Index Sensing

摘要

著录项

相关主题

期刊订阅