Hybrid Plasmonic Symmetry‐Protected Bound state in the Continuum Entering the Zeptomolar Biodetection Range

等离子体子 光子学 材料科学 光电子学 电介质 纳米材料 等离子纳米粒子 纳米技术 纳米尺度
作者
Elena Clabassi,Gianluca Balestra,Giulia Siciliano,Laura Polimeno,Iolena Tarantini,Elisabetta Primiceri,David Maria Tobaldi,Massimo Cuscunà,F. Quaranta,A. Passaseo,Alberto Rainer,Silvia Romano,Gianluigi Zito,Giuseppe Gigli,Vittorianna Tasco,Marco Esposito
出处
期刊:Small [Wiley]
标识
DOI:10.1002/smll.202411827
摘要

Abstract Photonics bound states in the continuum (BICs) are peculiar localized states in the continuum of free‐space waves, unaffected by far‐field radiation loss. Although plasmonic nano‐antennas squeeze the optical field to nanoscale volumes, engineering the emergence of quasi‐BICs with plasmonic hotspots remains challenging. Here, the origin of symmetry‐protected (SP) quasi‐BICs in a 2D system of silver‐filled dimers, quasi‐embedded in a high‐index dielectric waveguide, is investigated through the strong coupling between photonic and plasmonic modes. By tailoring the hybridizing plasmonic/photonic fractions, a trade‐off is selected at which the quasi‐BIC exhibits both high intrinsic Q‐factor and strong near‐field enhancement because of dimer‐gap hotspot activation. Not only radiation loss is damped but in a configuration sustaining a lattice of plasmonic hotspots. This leads to an advantageous small modal volume for enhancing light‐matter interaction. The layout of nearly embedded dimers is designed to maximize the spatial overlap between the optical field and the target molecules, enhancing reactive sensing efficiency. The architecture is evaluated for its ability to detect transactive response DNA‐binding protein 43. The refractometric sensitivity outperforms current label‐free biosensing platforms, reaching the zeptomolar range. The approach highlights the potential of combining plasmonic and dielectric nanomaterials for advanced sensing technologies.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
霜刃完成签到,获得积分10
刚刚
CuSO4完成签到,获得积分10
1秒前
军军问问张完成签到,获得积分10
2秒前
yueqi完成签到 ,获得积分10
2秒前
眠茶醒药完成签到,获得积分10
3秒前
Xiaoxiao应助shinn采纳,获得10
5秒前
cat关闭了cat文献求助
7秒前
英姑应助xuexi采纳,获得10
8秒前
wihjnfnk发布了新的文献求助10
8秒前
yls完成签到,获得积分10
8秒前
郑未晚完成签到,获得积分10
9秒前
9秒前
情怀应助大饼卷肉采纳,获得10
11秒前
科研通AI2S应助旋律采纳,获得10
12秒前
CipherSage应助飘逸的寄柔采纳,获得10
12秒前
SciGPT应助小妮采纳,获得10
14秒前
adding发布了新的文献求助10
14秒前
15秒前
17秒前
17秒前
18秒前
honey完成签到,获得积分10
18秒前
小李先绅发布了新的文献求助10
18秒前
21秒前
大神装完成签到,获得积分10
22秒前
青衣北风发布了新的文献求助10
23秒前
23秒前
旋律完成签到,获得积分10
23秒前
失眠朋友发布了新的文献求助10
23秒前
23秒前
jiujiuhuang完成签到,获得积分10
23秒前
专注寻菱完成签到,获得积分10
23秒前
MAKEYF发布了新的文献求助10
24秒前
26秒前
27秒前
zyw发布了新的文献求助10
27秒前
科研通AI5应助王sir采纳,获得10
27秒前
追寻的雁完成签到,获得积分10
27秒前
27秒前
28秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Immigrant Incorporation in East Asian Democracies 600
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3967544
求助须知:如何正确求助?哪些是违规求助? 3512763
关于积分的说明 11165008
捐赠科研通 3247759
什么是DOI,文献DOI怎么找? 1794027
邀请新用户注册赠送积分活动 874808
科研通“疑难数据库(出版商)”最低求助积分说明 804528