Creating Well-defined hot spots for surface-enhanced Raman scattering by single-crystalline noble metal nanowire pairs

Taejoon Kang; Ilsun Yoon; Ki Seok Jeon; Wonjun Choi; Yonghoon Lee; Kwanyong Seo; Youngdong Yoo; Q. Han Park; Hyotcherl Ihee; Yung Doug Suh; Bongsoo Kim

doi:10.1021/jp809391c

Creating Well-defined hot spots for surface-enhanced Raman scattering by single-crystalline noble metal nanowire pairs

Taejoon Kang, Ilsun Yoon, Ki Seok Jeon, Wonjun Choi, Yonghoon Lee, Kwanyong Seo, Youngdong Yoo, Q. Han Park, Hyotcherl Ihee, Yung Doug Suh, Bongsoo Kim

Department of Physics

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

54 Citations (Scopus)

Abstract

Well-defined surface-enhanced Raman scattering (SERS) active systems were fabricated by single-crystalline noble metal nanowires. Crossed and parallel nanowire pairs were constructed by using a nanomanipulator to create SERS hot spots in the form of nanowire junction. SERS spectra of brilliant cresyl blue (BCB), p-mercaptoaniline (pMA), and p-mercaptobenzoic acid (pMBA) were observed at the junction of two nanowires. The SERS enhancement and polarization dependence are correlated well with the enhanced electric field intensities calculated by the finite difference time domain (FDTD) method for specific nanowire geometries. These simple and effective SERS active systems have a practical advantage that the hot spots can be readily located and visualized by an optical microscope. These well-defined SERS active systems based on noble metal nanowires can be further developed to find applications in a variety of biological and chemical sensing.

Original language	English
Pages (from-to)	7492-7496
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	18
DOIs	https://doi.org/10.1021/jp809391c
Publication status	Published - 2009 May 7

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Creating Well-defined hot spots for surface-enhanced Raman scattering by single-crystalline noble metal nanowire pairs",

abstract = "Well-defined surface-enhanced Raman scattering (SERS) active systems were fabricated by single-crystalline noble metal nanowires. Crossed and parallel nanowire pairs were constructed by using a nanomanipulator to create SERS hot spots in the form of nanowire junction. SERS spectra of brilliant cresyl blue (BCB), p-mercaptoaniline (pMA), and p-mercaptobenzoic acid (pMBA) were observed at the junction of two nanowires. The SERS enhancement and polarization dependence are correlated well with the enhanced electric field intensities calculated by the finite difference time domain (FDTD) method for specific nanowire geometries. These simple and effective SERS active systems have a practical advantage that the hot spots can be readily located and visualized by an optical microscope. These well-defined SERS active systems based on noble metal nanowires can be further developed to find applications in a variety of biological and chemical sensing.",

author = "Taejoon Kang and Ilsun Yoon and Jeon, {Ki Seok} and Wonjun Choi and Yonghoon Lee and Kwanyong Seo and Youngdong Yoo and Park, {Q. Han} and Hyotcherl Ihee and Suh, {Yung Doug} and Bongsoo Kim",

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doi = "10.1021/jp809391c",

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AU - Kang, Taejoon

AU - Yoon, Ilsun

AU - Jeon, Ki Seok

AU - Choi, Wonjun

AU - Lee, Yonghoon

AU - Seo, Kwanyong

AU - Yoo, Youngdong

AU - Park, Q. Han

AU - Ihee, Hyotcherl

AU - Suh, Yung Doug

AU - Kim, Bongsoo

PY - 2009/5/7

Y1 - 2009/5/7

N2 - Well-defined surface-enhanced Raman scattering (SERS) active systems were fabricated by single-crystalline noble metal nanowires. Crossed and parallel nanowire pairs were constructed by using a nanomanipulator to create SERS hot spots in the form of nanowire junction. SERS spectra of brilliant cresyl blue (BCB), p-mercaptoaniline (pMA), and p-mercaptobenzoic acid (pMBA) were observed at the junction of two nanowires. The SERS enhancement and polarization dependence are correlated well with the enhanced electric field intensities calculated by the finite difference time domain (FDTD) method for specific nanowire geometries. These simple and effective SERS active systems have a practical advantage that the hot spots can be readily located and visualized by an optical microscope. These well-defined SERS active systems based on noble metal nanowires can be further developed to find applications in a variety of biological and chemical sensing.

AB - Well-defined surface-enhanced Raman scattering (SERS) active systems were fabricated by single-crystalline noble metal nanowires. Crossed and parallel nanowire pairs were constructed by using a nanomanipulator to create SERS hot spots in the form of nanowire junction. SERS spectra of brilliant cresyl blue (BCB), p-mercaptoaniline (pMA), and p-mercaptobenzoic acid (pMBA) were observed at the junction of two nanowires. The SERS enhancement and polarization dependence are correlated well with the enhanced electric field intensities calculated by the finite difference time domain (FDTD) method for specific nanowire geometries. These simple and effective SERS active systems have a practical advantage that the hot spots can be readily located and visualized by an optical microscope. These well-defined SERS active systems based on noble metal nanowires can be further developed to find applications in a variety of biological and chemical sensing.

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JO - Journal of Physical Chemistry C

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ER -

Creating Well-defined hot spots for surface-enhanced Raman scattering by single-crystalline noble metal nanowire pairs

Abstract

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