Surface enhanced Raman spectroscopy by interfered femtosecond laser created nanostructures

Chao Wang; Yun Ching Chang; Jimmy Yao; Claire Luo; Stuart Yin; Paul Ruffin; Christina Brantley; Eugene Edwards

doi:10.1063/1.3676040

Surface enhanced Raman spectroscopy by interfered femtosecond laser created nanostructures

Chao Wang, Yun Ching Chang, Jimmy Yao, Claire Luo, Stuart Yin, Paul Ruffin, Christina Brantley, Eugene Edwards

Electrical Engineering

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

24 Scopus citations

Abstract

A type of surface enhanced Raman spectroscopy (SERS) by interfered femtosecond laser created nanostructures on Cu metal is presented. It is found out that finer and more uniform nanostructures (with an average feature size 100 nm or smaller) can be created on Cu metal by interfered femtosecond illumination with a phase mask. Significantly enhanced Raman signal (with an enhancement factor around 863) can be realized by using the nanostructured Cu substrate created by the interfered femtosecond laser illumination. The experimentally measured enhancement factor agrees relatively well with the theoretical analyses. Since the nanostructures can be inscribed in real time and at remote locations by the femtosecond laser inscription, the proposed SERS can be particularly useful for the standoff detection of chemicals.

Original language	English (US)
Article number	023107
Journal	Applied Physics Letters
Volume	100
Issue number	2
DOIs	https://doi.org/10.1063/1.3676040
State	Published - Jan 9 2012

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3676040

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title = "Surface enhanced Raman spectroscopy by interfered femtosecond laser created nanostructures",

abstract = "A type of surface enhanced Raman spectroscopy (SERS) by interfered femtosecond laser created nanostructures on Cu metal is presented. It is found out that finer and more uniform nanostructures (with an average feature size 100 nm or smaller) can be created on Cu metal by interfered femtosecond illumination with a phase mask. Significantly enhanced Raman signal (with an enhancement factor around 863) can be realized by using the nanostructured Cu substrate created by the interfered femtosecond laser illumination. The experimentally measured enhancement factor agrees relatively well with the theoretical analyses. Since the nanostructures can be inscribed in real time and at remote locations by the femtosecond laser inscription, the proposed SERS can be particularly useful for the standoff detection of chemicals.",

author = "Chao Wang and Chang, {Yun Ching} and Jimmy Yao and Claire Luo and Stuart Yin and Paul Ruffin and Christina Brantley and Eugene Edwards",

note = "Funding Information: Authors greatly acknowledge the partial financial support of this work by an ONR basic research program. The views and opinions of its authors do not necessarily state or reflect those of the U.S. Government or any agency thereof. Reference to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof.",

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AU - Wang, Chao

AU - Chang, Yun Ching

AU - Yao, Jimmy

AU - Luo, Claire

AU - Yin, Stuart

AU - Ruffin, Paul

AU - Brantley, Christina

AU - Edwards, Eugene

N1 - Funding Information: Authors greatly acknowledge the partial financial support of this work by an ONR basic research program. The views and opinions of its authors do not necessarily state or reflect those of the U.S. Government or any agency thereof. Reference to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof.

PY - 2012/1/9

Y1 - 2012/1/9

N2 - A type of surface enhanced Raman spectroscopy (SERS) by interfered femtosecond laser created nanostructures on Cu metal is presented. It is found out that finer and more uniform nanostructures (with an average feature size 100 nm or smaller) can be created on Cu metal by interfered femtosecond illumination with a phase mask. Significantly enhanced Raman signal (with an enhancement factor around 863) can be realized by using the nanostructured Cu substrate created by the interfered femtosecond laser illumination. The experimentally measured enhancement factor agrees relatively well with the theoretical analyses. Since the nanostructures can be inscribed in real time and at remote locations by the femtosecond laser inscription, the proposed SERS can be particularly useful for the standoff detection of chemicals.

AB - A type of surface enhanced Raman spectroscopy (SERS) by interfered femtosecond laser created nanostructures on Cu metal is presented. It is found out that finer and more uniform nanostructures (with an average feature size 100 nm or smaller) can be created on Cu metal by interfered femtosecond illumination with a phase mask. Significantly enhanced Raman signal (with an enhancement factor around 863) can be realized by using the nanostructured Cu substrate created by the interfered femtosecond laser illumination. The experimentally measured enhancement factor agrees relatively well with the theoretical analyses. Since the nanostructures can be inscribed in real time and at remote locations by the femtosecond laser inscription, the proposed SERS can be particularly useful for the standoff detection of chemicals.

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Surface enhanced Raman spectroscopy by interfered femtosecond laser created nanostructures

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All Science Journal Classification (ASJC) codes

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