High-density plasmonic nanoparticle arrays deposited on nanoporous anodic alumina templates for optical sensor applications

Uldis Malinovskis, Raimonds Poplausks, Donats Erts, Kerstin Ramser, Sigitas Tamulevičius, Asta Tamulevičienė, Yesong Gu, Juris Prikulis*

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Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

This study demonstrates a new, robust, and accessible deposition technique of metal nanoparticle arrays (NPAs), which uses nanoporous anodic alumina (NAA) as a template for capillary force-assisted convective colloid (40, 60, and 80 nm diameter Au) assembly. The NPA density and nanoparticle size can be independently tuned by the anodization conditions and colloid synthesis protocols. This enables production of non-touching variable-density NPAs with controllable gaps in the 20-60 nm range. The NPA nearest neighbor center distance in the present study was fixed to 100 nm by the choice of anodization protocol. The obtained Au NPAs have the resonant scattering maxima in the visible spectral range, with a refractometric sensitivity, which can be tuned by the variation of the array density. The thickness of the NAA layer in an Aluminum-NAA-NPA multilayer system enables further tuning of the resonance frequency and optimization for use with specific molecules, e.g., to avoid absorption bands. Applicability of the mentioned multilayers for colorimetric refractive index (RI) sensing is demonstrated. Their use as Surface-Enhanced Raman Scattering (SERS) substrates is tested using hemoglobin as a biological probe molecule.

OriginalsprogEngelsk
Artikelnummer531
TidsskriftNanomaterials
Vol/bind9
Udgave nummer4
ISSN2079-4991
DOI
StatusUdgivet - apr. 2019

Fingeraftryk

Aluminum Oxide
Optical sensors
Alumina
Nanoparticles
Colloids
Multilayers
Molecules
Metal nanoparticles
Hemoglobin
Aluminum
Raman scattering
Absorption spectra
Refractive index
Hemoglobins
Tuning
Scattering
Substrates

Citer dette

Malinovskis, Uldis ; Poplausks, Raimonds ; Erts, Donats ; Ramser, Kerstin ; Tamulevičius, Sigitas ; Tamulevičienė, Asta ; Gu, Yesong ; Prikulis, Juris. / High-density plasmonic nanoparticle arrays deposited on nanoporous anodic alumina templates for optical sensor applications. I: Nanomaterials. 2019 ; Bind 9, Nr. 4.
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title = "High-density plasmonic nanoparticle arrays deposited on nanoporous anodic alumina templates for optical sensor applications",
abstract = "This study demonstrates a new, robust, and accessible deposition technique of metal nanoparticle arrays (NPAs), which uses nanoporous anodic alumina (NAA) as a template for capillary force-assisted convective colloid (40, 60, and 80 nm diameter Au) assembly. The NPA density and nanoparticle size can be independently tuned by the anodization conditions and colloid synthesis protocols. This enables production of non-touching variable-density NPAs with controllable gaps in the 20-60 nm range. The NPA nearest neighbor center distance in the present study was fixed to 100 nm by the choice of anodization protocol. The obtained Au NPAs have the resonant scattering maxima in the visible spectral range, with a refractometric sensitivity, which can be tuned by the variation of the array density. The thickness of the NAA layer in an Aluminum-NAA-NPA multilayer system enables further tuning of the resonance frequency and optimization for use with specific molecules, e.g., to avoid absorption bands. Applicability of the mentioned multilayers for colorimetric refractive index (RI) sensing is demonstrated. Their use as Surface-Enhanced Raman Scattering (SERS) substrates is tested using hemoglobin as a biological probe molecule.",
keywords = "Colloid deposition, Hemoglobin, Nanoparticle arrays, Plasmonics, Porous anodic aluminum oxide, SERS",
author = "Uldis Malinovskis and Raimonds Poplausks and Donats Erts and Kerstin Ramser and Sigitas Tamulevičius and Asta Tamulevičienė and Yesong Gu and Juris Prikulis",
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High-density plasmonic nanoparticle arrays deposited on nanoporous anodic alumina templates for optical sensor applications. / Malinovskis, Uldis; Poplausks, Raimonds; Erts, Donats; Ramser, Kerstin; Tamulevičius, Sigitas; Tamulevičienė, Asta; Gu, Yesong; Prikulis, Juris.

I: Nanomaterials, Bind 9, Nr. 4, 531, 04.2019.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - High-density plasmonic nanoparticle arrays deposited on nanoporous anodic alumina templates for optical sensor applications

AU - Malinovskis, Uldis

AU - Poplausks, Raimonds

AU - Erts, Donats

AU - Ramser, Kerstin

AU - Tamulevičius, Sigitas

AU - Tamulevičienė, Asta

AU - Gu, Yesong

AU - Prikulis, Juris

PY - 2019/4

Y1 - 2019/4

N2 - This study demonstrates a new, robust, and accessible deposition technique of metal nanoparticle arrays (NPAs), which uses nanoporous anodic alumina (NAA) as a template for capillary force-assisted convective colloid (40, 60, and 80 nm diameter Au) assembly. The NPA density and nanoparticle size can be independently tuned by the anodization conditions and colloid synthesis protocols. This enables production of non-touching variable-density NPAs with controllable gaps in the 20-60 nm range. The NPA nearest neighbor center distance in the present study was fixed to 100 nm by the choice of anodization protocol. The obtained Au NPAs have the resonant scattering maxima in the visible spectral range, with a refractometric sensitivity, which can be tuned by the variation of the array density. The thickness of the NAA layer in an Aluminum-NAA-NPA multilayer system enables further tuning of the resonance frequency and optimization for use with specific molecules, e.g., to avoid absorption bands. Applicability of the mentioned multilayers for colorimetric refractive index (RI) sensing is demonstrated. Their use as Surface-Enhanced Raman Scattering (SERS) substrates is tested using hemoglobin as a biological probe molecule.

AB - This study demonstrates a new, robust, and accessible deposition technique of metal nanoparticle arrays (NPAs), which uses nanoporous anodic alumina (NAA) as a template for capillary force-assisted convective colloid (40, 60, and 80 nm diameter Au) assembly. The NPA density and nanoparticle size can be independently tuned by the anodization conditions and colloid synthesis protocols. This enables production of non-touching variable-density NPAs with controllable gaps in the 20-60 nm range. The NPA nearest neighbor center distance in the present study was fixed to 100 nm by the choice of anodization protocol. The obtained Au NPAs have the resonant scattering maxima in the visible spectral range, with a refractometric sensitivity, which can be tuned by the variation of the array density. The thickness of the NAA layer in an Aluminum-NAA-NPA multilayer system enables further tuning of the resonance frequency and optimization for use with specific molecules, e.g., to avoid absorption bands. Applicability of the mentioned multilayers for colorimetric refractive index (RI) sensing is demonstrated. Their use as Surface-Enhanced Raman Scattering (SERS) substrates is tested using hemoglobin as a biological probe molecule.

KW - Colloid deposition

KW - Hemoglobin

KW - Nanoparticle arrays

KW - Plasmonics

KW - Porous anodic aluminum oxide

KW - SERS

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