Spatial-Tunable Au Nanoparticle Functionalized Si Nanorods Arrays for Surface Enhanced Raman Spectroscopy.

Dongdong Lin, Kunjie Dai, Tianxiang Yu, Wenhui Zhao, Wenwu Xu

Abstract read

In one paragraph

Article in Nanomaterials (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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3 · Its place in the literature

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1 citing paper in PubMed.

Self-Assembled Au Nanoparticle Monolayers on Silicon in Two- and Three-Dimensions for Surface-Enhanced Raman Scattering Sensing.ACS applied nano materials · 2022
Article

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5 · Who and what money

Authors and funding

5 authors.

Dongdong LinDepartment of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, 818 Fenghua Road, Ningbo 315211, China.

Kunjie DaiDepartment of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, 818 Fenghua Road, Ningbo 315211, China.

Tianxiang YuDepartment of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, 818 Fenghua Road, Ningbo 315211, China.

Wenhui ZhaoDepartment of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, 818 Fenghua Road, Ningbo 315211, China.

Wenwu XuDepartment of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, 818 Fenghua Road, Ningbo 315211, China.

Funding

National Natural Science Foundation of China 11804174Natural Science Foundation of Ningbo 2018A610319Natural Science Foundation of Zhejiang Province LY18B030003

6 · The paper itself

Abstract

In this study, hexagonal-packed Si nanorods (SiNRs) arrays were fabricated and conjugated with Au nanoparticles (AuNPs) in different spatial distributions for surface-enhanced Raman spectroscopy (SERS). The AuNPs were functionalized on the bottom of SiNRs (B-SiNRs@AuNPs), top of SiNRs (T-SiNRs@AuNPs) and sides of SiNRs (S-SiNRs@AuNPs), respectively. Our results demonstrated that the SiNRs conjugated with AuNPs on the sides achieved high reproducibility in detection of R6G molecules, while the AuNPs on the top of the SiNRs obtained the strongest Raman enhancement. In addition, the substrate with S-SiNRs@AuNPs obtained the highest spatial uniformity of enhancement. The finite-difference time-domain simulation gave further evidence that the incident light could be confined in the space of SiNRs arrays and yield a zero-gap enhancement coupled with the AuNPs. Our study provided a spatially tunable SiNRs@AuNPs substrate with high sensitivity and reproducibility in molecular detection.

Indexed as

Au nanoparticlesdetectionSERSSi nanorodssurface plasmon resonance

Identifiers

PMID32635490

DOI10.3390/nano10071317

PMCPMC7407171

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