Optical response of silver nanoneedles on a mirror

A. Keeman; Ernst S. Kooij; D. van Dam; R.E.I. Schropp; M. Di Vece

doi:10.1007/s11468-015-9900-y

Optical response of silver nanoneedles on a mirror

A. Keeman, Ernst S. Kooij, D. van Dam, R.E.I. Schropp, M. Di Vece

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results are complemented by finite-difference time-domain (FDTD) calculations. Plasmon resonances on the nanoneedles can indeed be observed in the polarized optical response. This study reveals the details of the complex antenna-like behaviour of the nanoneedles which gives an agreement between experiment and FDTD simulation. The simulations show that the plasmon resonances lead to an effective negative refractive index, originating from the negative refractive index of the nanoneedles in combination with its supporting substrate, i.e. a mirror. This original study of a complex plasmonic system by ellipsometry and FDTD has great relevance for applications, making use of intricate light matter interaction.

Original language	English
Pages (from-to)	1089-1096
Number of pages	8
Journal	Plasmonics
Volume	10
Issue number	5
DOIs	https://doi.org/10.1007/s11468-015-9900-y
Publication status	Published - 2015

Keywords

METIS-312945
IR-99804

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10.1007/s11468-015-9900-y

optical response

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title = "Optical response of silver nanoneedles on a mirror",

abstract = "Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results are complemented by finite-difference time-domain (FDTD) calculations. Plasmon resonances on the nanoneedles can indeed be observed in the polarized optical response. This study reveals the details of the complex antenna-like behaviour of the nanoneedles which gives an agreement between experiment and FDTD simulation. The simulations show that the plasmon resonances lead to an effective negative refractive index, originating from the negative refractive index of the nanoneedles in combination with its supporting substrate, i.e. a mirror. This original study of a complex plasmonic system by ellipsometry and FDTD has great relevance for applications, making use of intricate light matter interaction.",

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TY - JOUR

T1 - Optical response of silver nanoneedles on a mirror

AU - Keeman, A.

AU - Kooij, Ernst S.

AU - van Dam, D.

AU - Schropp, R.E.I.

AU - Di Vece, M.

N1 - Open access

PY - 2015

Y1 - 2015

N2 - Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results are complemented by finite-difference time-domain (FDTD) calculations. Plasmon resonances on the nanoneedles can indeed be observed in the polarized optical response. This study reveals the details of the complex antenna-like behaviour of the nanoneedles which gives an agreement between experiment and FDTD simulation. The simulations show that the plasmon resonances lead to an effective negative refractive index, originating from the negative refractive index of the nanoneedles in combination with its supporting substrate, i.e. a mirror. This original study of a complex plasmonic system by ellipsometry and FDTD has great relevance for applications, making use of intricate light matter interaction.

AB - Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results are complemented by finite-difference time-domain (FDTD) calculations. Plasmon resonances on the nanoneedles can indeed be observed in the polarized optical response. This study reveals the details of the complex antenna-like behaviour of the nanoneedles which gives an agreement between experiment and FDTD simulation. The simulations show that the plasmon resonances lead to an effective negative refractive index, originating from the negative refractive index of the nanoneedles in combination with its supporting substrate, i.e. a mirror. This original study of a complex plasmonic system by ellipsometry and FDTD has great relevance for applications, making use of intricate light matter interaction.

KW - METIS-312945

KW - IR-99804

U2 - 10.1007/s11468-015-9900-y

DO - 10.1007/s11468-015-9900-y

M3 - Article

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SP - 1089

EP - 1096

JO - Plasmonics

JF - Plasmonics

SN - 1557-1955

IS - 5

ER -

Optical response of silver nanoneedles on a mirror

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