Optical Fiber-Based Surface-Enhanced Raman Scattering Sensor Using Au Nanovoid Arrays

Chang, Shwu Fen; Nyagilo, James O.; Wu, Jiaqi; Hao, Yaowu; Davé, Digant P.

doi:10.1007/s11468-012-9335-7

Cited by 13 publications

(13 citation statements)

References 22 publications

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“…254–257 These novel SERS substrates are also easily integrated into conventional chromatography, microfluidics, and other biological assays, and therefore hold great promise in future SERS applications. In addition, one of the most promising features of future SERS is the capability of multiplexed detection in live animals.…”

Section: Discussionmentioning

confidence: 99%

Plasmon-enhanced optical sensors: a review

Cushing

2015

Analyst

818

715

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Surface plasmon resonance (SPR) has found extensive applications in chemi-sensors and biosensors. Plasmons play different roles in different types of optical sensors. SPR transduces a signal in a colorimetric sensor through shifts in the spectral position and intensity in response to external stimuli. SPR can also concentrate the incident electromagnetic field in a nanostructure, modulating fluorescence emission and enabling plasmon-enhanced fluorescence to be used for ultrasensitive detection. Furthermore, plasmons have been extensively used for amplifying a Raman signal in a surface-enhanced Raman scattering sensor. This paper presents a review of recent research progress in plasmon-enhanced optical sensing, giving an emphasis on the physical basis of plasmon-enhanced sensors and how these principles guide the design of sensors. In particular, this paper discusses the design strategies for nanomaterials and nanostructures to plasmonically enhance optical sensing signals, also highlighting the applications of plasmon-enhanced optical sensors in health care, homeland security, food safety and environmental monitoring.

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Section: Discussionmentioning

confidence: 99%

Plasmon-enhanced optical sensors: a review

Cushing

2015

Analyst

818

715

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“…To investigate the LSPR effect at the metal/semiconductor interface, the 3-D FDTD simulation [24][25][26] was conducted to understand electric field distribution over a wide range of wavelength by solving the Maxwell's equations. The FDTD simulation is based on Yee's algorithm with a perfectly-matched layer boundary condition and a grid spacing of 0.1 nm.…”

Section: Fdtd Simulationmentioning

confidence: 99%

Anatase TiO2 nanobelts with plasmonic Au decoration exhibiting efficient charge separation and enhanced activity

Hsu¹,

Shen²,

Zi³

et al. 2014

Journal of Alloys and Compounds

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“…In an earlier work we have described fabrication of AuNVs on glass coverslips that are suitable for fiber-tip surface enhanced Raman spectroscopy applications (Chang et al 2012). Large Raman scattering enhancement is achieved due to EM field cavity modes in nano-void structures which are generated by strong local plasmons.…”

Section: Design Of Plasmonic Resonatorsmentioning

confidence: 99%

“…3D and 2D nanostructures have a reported sensitivity ranging from 40 nm/RIU to 996 nm/RIU (Chen et al 2008;Haes and Duyne 2004;Malinsky et al 2001;Marinakos et al 2007;Nath and Chilkoti 2001;Nehl et al 2006;Sun and Xia 2002;Tam et al 2004) when measuring bulk refractive index changes. A new type of negative relief 2D nano-structure in the form of metallic nano-voids have been theoretically and experimentally demonstrated to support large LSPR modes that can be tuned with proper selection of void parameters (Baumberg et al 2005;Chang et al 2012;Cole et al 2007). Besides large resonance modes supported by nano-void arrays, they are suitable for facile low cost fabrication (Chang et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…A new type of negative relief 2D nano-structure in the form of metallic nano-voids have been theoretically and experimentally demonstrated to support large LSPR modes that can be tuned with proper selection of void parameters (Baumberg et al 2005;Chang et al 2012;Cole et al 2007). Besides large resonance modes supported by nano-void arrays, they are suitable for facile low cost fabrication (Chang et al 2012). …”

Section: Introductionmentioning

confidence: 99%

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