Fabrication and near-field visualization of a wafer-scale dense plasmonic nanostructured arrayElectronic supplementary information (ESI) available: FE-SEM, PiFM and AFM images of Ag nanostructures, and SERS signal uniformity over a 4 inch area. See DOI: 10.1039/c7ra13322g
Developing a sensor that identifies and quantifies trace amounts of analyte molecules is crucially important for widespread applications, especially in the areas of chemical and biological detection. By non-invasively identifying the vibrational signatures of the target molecules, surface-enhanced R...
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08.02.2018
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Abstract | Developing a sensor that identifies and quantifies trace amounts of analyte molecules is crucially important for widespread applications, especially in the areas of chemical and biological detection. By non-invasively identifying the vibrational signatures of the target molecules, surface-enhanced Raman scattering (SERS) has been widely employed as a tool for molecular detection. Here, we report on the reproducible fabrication of wafer-scale dense SERS arrays and single-nanogap level near-field imaging of these dense arrays under ambient conditions. Plasmonic nanogaps densely populated the spaces among globular Ag nanoparticles with an areal density of 120 particles per μm
2
upon application of a nanolithography-free simple process consisting of the Ar plasma treatment of a polyethylene terephthalate substrate and subsequent Ag sputter deposition. The compact nanogaps produced a high SERS enhancement factor of 3.3 × 10
7
and homogeneous (coefficient of variation of 8.1%) SERS response. The local near fields at these nanogaps were visualized using photo-induced force microscopy that simultaneously enabled near-field excitation and near-field force detection under ambient conditions. A high spatial resolution of 3.1 nm was achieved. Taken together, the generation of a large-area SERS array with dense plasmonic nanogaps and the subsequent single-nanogap level characterization of the local near field have profound implications in the nanoplasmonic imaging and sensing applications.
This paper presents the fabrication and near-field visualization of a wafer-scale dense plasmonic nanostructured array. |
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AbstractList | Developing a sensor that identifies and quantifies trace amounts of analyte molecules is crucially important for widespread applications, especially in the areas of chemical and biological detection. By non-invasively identifying the vibrational signatures of the target molecules, surface-enhanced Raman scattering (SERS) has been widely employed as a tool for molecular detection. Here, we report on the reproducible fabrication of wafer-scale dense SERS arrays and single-nanogap level near-field imaging of these dense arrays under ambient conditions. Plasmonic nanogaps densely populated the spaces among globular Ag nanoparticles with an areal density of 120 particles per μm
2
upon application of a nanolithography-free simple process consisting of the Ar plasma treatment of a polyethylene terephthalate substrate and subsequent Ag sputter deposition. The compact nanogaps produced a high SERS enhancement factor of 3.3 × 10
7
and homogeneous (coefficient of variation of 8.1%) SERS response. The local near fields at these nanogaps were visualized using photo-induced force microscopy that simultaneously enabled near-field excitation and near-field force detection under ambient conditions. A high spatial resolution of 3.1 nm was achieved. Taken together, the generation of a large-area SERS array with dense plasmonic nanogaps and the subsequent single-nanogap level characterization of the local near field have profound implications in the nanoplasmonic imaging and sensing applications.
This paper presents the fabrication and near-field visualization of a wafer-scale dense plasmonic nanostructured array. |
Author | Kim, Hyung Min Lim, Dong-Kwon Kim, Nam Hoon Kim, Jongwoo Park, Sung-Gyu Yun, Jungheum Jahng, Junghoon Seo, Min-Kyo Song, Jung-Hwan Bae, Tae-Sung Suh, Yung Doug Nowak, Derek B Nam, Sang Hwan Mun, ChaeWon Kim, Dong-Ho Lee, Haemi Morrison, William A |
AuthorAffiliation | KU-KIST Graduate School of Converging Science and Technology Department of Physics and Institute for the NanoCentury Korea Basic Science Institute Korea Research Institute of Chemical Technology (KRICT) Korea Research Institute of Standards and Science Korea Institute of Materials Science (KIMS) KAIST Advanced Functional Thin Films Department Sungkyunkwan University Research Center for Convergence NanoRaman Technology School of Chemical Engineering Korea University Kookmin University Center for Nanocharacterization Molecular Vista Center for Convergent Research of Emerging Virus Infection Jeonju Center Department of Bio & Nano Chemistry |
AuthorAffiliation_xml | – name: Korea Research Institute of Standards and Science – name: Korea University – name: Molecular Vista – name: Sungkyunkwan University – name: KAIST – name: Jeonju Center – name: Korea Basic Science Institute – name: School of Chemical Engineering – name: Korea Institute of Materials Science (KIMS) – name: Center for Nanocharacterization – name: Korea Research Institute of Chemical Technology (KRICT) – name: Department of Bio & Nano Chemistry – name: Research Center for Convergence NanoRaman Technology – name: Advanced Functional Thin Films Department – name: KU-KIST Graduate School of Converging Science and Technology – name: Department of Physics and Institute for the NanoCentury – name: Kookmin University – name: Center for Convergent Research of Emerging Virus Infection |
Author_xml | – sequence: 1 givenname: Jungheum surname: Yun fullname: Yun, Jungheum – sequence: 2 givenname: Haemi surname: Lee fullname: Lee, Haemi – sequence: 3 givenname: ChaeWon surname: Mun fullname: Mun, ChaeWon – sequence: 4 givenname: Junghoon surname: Jahng fullname: Jahng, Junghoon – sequence: 5 givenname: William A surname: Morrison fullname: Morrison, William A – sequence: 6 givenname: Derek B surname: Nowak fullname: Nowak, Derek B – sequence: 7 givenname: Jung-Hwan surname: Song fullname: Song, Jung-Hwan – sequence: 8 givenname: Dong-Kwon surname: Lim fullname: Lim, Dong-Kwon – sequence: 9 givenname: Tae-Sung surname: Bae fullname: Bae, Tae-Sung – sequence: 10 givenname: Hyung Min surname: Kim fullname: Kim, Hyung Min – sequence: 11 givenname: Nam Hoon surname: Kim fullname: Kim, Nam Hoon – sequence: 12 givenname: Sang Hwan surname: Nam fullname: Nam, Sang Hwan – sequence: 13 givenname: Jongwoo surname: Kim fullname: Kim, Jongwoo – sequence: 14 givenname: Min-Kyo surname: Seo fullname: Seo, Min-Kyo – sequence: 15 givenname: Dong-Ho surname: Kim fullname: Kim, Dong-Ho – sequence: 16 givenname: Sung-Gyu surname: Park fullname: Park, Sung-Gyu – sequence: 17 givenname: Yung Doug surname: Suh fullname: Suh, Yung Doug |
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Notes | 10.1039/c7ra13322g Electronic supplementary information (ESI) available: FE-SEM, PiFM and AFM images of Ag nanostructures, and SERS signal uniformity over a 4 inch area. See DOI |
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Title | Fabrication and near-field visualization of a wafer-scale dense plasmonic nanostructured arrayElectronic supplementary information (ESI) available: FE-SEM, PiFM and AFM images of Ag nanostructures, and SERS signal uniformity over a 4 inch area. See DOI: 10.1039/c7ra13322g |
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