Probing the SERS brightness of individual Au nanoparticles, hollow Au/Ag nanoshells, Au nanostars and Au core/Au satellite particles: single-particle experiments and computer simulations†,Nanoscale

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Probing the SERS brightness of individual Au nanoparticles, hollow Au/Ag nanoshells, Au nanostars and Au core/Au satellite particles: single-particle experiments and computer simulations†
Nanoscale ( IF 5.8 ) Pub Date : 2018-11-09 00:00:00 , DOI: 10.1039/c8nr06028b
Vi Tran _{1,

2,

3,

4,

5} , Christian Thiel _{1,

5,

6,

7,

8} , Jan Taro Svejda _{1,

5,

6,

7,

8} , Mandana Jalali _{1,

5,

6,

7,

8} , Bernd Walkenfort _{1,

2,

3,

4,

5} , Daniel Erni _{1,

5,

6,

7,

8} , Sebastian Schlücker _{1,

2,

3,

4,

5}

Affiliation

Different classes of plasmonic nanoparticles functionalized with the non-resonant Raman reporter molecule 4-MBA are tested for their SERS signal brightness at the single-particle level: gold nanoparticles, hollow gold/silver nanoshells, gold nanostars, and gold core/gold satellite particles. Correlative SERS/SEM experiments on a set of particles from each class enable the unambiguous identification of single particles by electron microscopy as well as the characterization of both their elastic (LSPR) and inelastic (SERS) scattering spectra. Experimental observations are compared with predictions from FEM computer simulations based on 3D models derived from representative TEM/SEM images. Single gold nanostars and single gold core/gold satellite particles exhibit a detectable SERS signal under the given experimental conditions, while single gold nanoparticles and single hollow gold/silver nanoshells are not detectable.

中文翻译：

探索单个Au纳米颗粒，中空Au / Ag纳米壳，Au纳米星和Au核/ Au人造卫星的SERS亮度：单颗粒实验和计算机模拟†

测试了用非共振拉曼报告分子4-MBA功能化的不同类型的等离子体纳米颗粒在单颗粒水平上的SERS信号亮度：金纳米颗粒，中空金/银纳米壳，金纳米星和金核/金卫星颗粒。对来自每个类别的一组粒子进行的相关SERS / SEM实验可通过电子显微镜明确鉴定单个粒子，并表征其弹性（LSPR）和非弹性（SERS）散射光谱。将实验观察结果与基于基于代表性TEM / SEM图像的3D模型的FEM计算机模拟的预测结果进行比较。在给定的实验条件下，单个金纳米星和单个金核/金卫星颗粒显示出可检测的SERS信号，

更新日期：2018-11-09

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