Transmission Surface Plasmon Resonance Signal Enhancement via Growth of Gold Nanoparticles on a Gold Grating Surface

Lertvachirapaiboon, Chutiparn; Supunyabut, Chirayut; Baba, Akira; Ekgasit, Sanong; Thammacharoen, Chuchaat; Shinbo, Kazunari; Kato, Keizo; Kaneko, Futao

doi:10.1007/s11468-012-9400-2

Cited by 20 publications

(10 citation statements)

References 32 publications

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“…6A and B show that the reflectivity curve on gold/grating clearly indicates that SPR can be obtained as the presence of the dip peaks in the reflection spectrum upon irradiation with p-polarized light. [41][42][43] Similar to our previous study, the interaction between LSPR of gold nanoparticles on TiO 2 surfaces and grating-coupled SPR of the gold grating substrate could be obtained. 39 The SPR reflection spectra of the TiO 2 -gold grating and the AuNP-TiO 2 nanocomposite/ gold grating substrates are shown in Fig.…”

Section: Gc-spr-enhanced Photocurrent Properties Of Tio 2 and Aunp-desupporting

confidence: 76%

“…We previously reported that a strong electric field was generated from the AuNPs/Au grating film due to the interaction between LSPR of those plasmonic nanoparticles and grating-coupled surface plasmon of gold grating. [41][42][43] Similar to our previous study, the interaction between LSPR of gold nanoparticles on TiO 2 surfaces and grating-coupled SPR of the gold grating substrate could be obtained. Upon direct light irradiation, plasmonic gold nanoparticles can generate a strong electric field by LSPR excitation on the surfaces of those plasmonic particles.…”

Section: Gc-spr-enhanced Photocurrent Properties Of Tio 2 and Aunp-de...supporting

confidence: 76%

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Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO₂thin films

Nootchanat

Ninsonti

Baba

et al. 2014

Phys. Chem. Chem. Phys.

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We fabricated plasmonic gold nanoparticle (AuNP)-TiO2 nanocomposite films and measured the photocurrent that originates from the water-splitting reaction catalyzed by the AuNP-TiO2 nanocomposite photoelectrocatalytic (PEC) electrode. The localized surface plasmon resonance (LSPR) of the gold nanoparticles affected the generation of photocurrent by TiO2 upon illumination with visible light. Electrochemical impedance spectroscopy (EIS) revealed that the improvement in the photocurrent generation originates from an enhancement in electron-hole pair generation induced by the SPR of the plasmonic gold nanoparticles rather than the extension of the electron lifetime. Moreover, we introduced a novel method to enhance the photocurrent of TiO2 by a multiple plasmonic effect, i.e., LSPR of plasmonic gold nanoparticles and the grating-coupled propagating SP on a gold grating. We fabricated the AuNP-TiO2 nanocomposites on a gold-coated Blu-ray disc recordable (BD-R). The enhancement of the photocurrent due to the combination of LSPR and the grating-coupled SP was investigated.

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Section: Gc-spr-enhanced Photocurrent Properties Of Tio 2 and Aunp-desupporting

confidence: 76%

Section: Gc-spr-enhanced Photocurrent Properties Of Tio 2 and Aunp-de...supporting

confidence: 76%

Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO₂thin films

Nootchanat

Ninsonti

Baba

et al. 2014

Phys. Chem. Chem. Phys.

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“…Moreover, when 0.5 at.% Ag–TiO 2 or 1.0 at.% Au–TiO 2 is exposed to grating‐coupled SP excitation, the enhancement factor exceeds 5 at 30°, the angle at which the wavelength of both the SP dip and the absorption peak of TMPyP–SCC was observed. This large enhancement manifests from the strong field enhancement of SP excitation induced by interactions between the grating‐coupled propagating SP excitation and the Au NPs deposited on TiO 2 . SP excitation generates more excitons in the active layer, leading to electron injection into the conduction band of TiO 2 .…”

Section: Resultsmentioning

confidence: 99%

“…Similarly, we have demonstrated that Ag and Au NPs on metallic grating surfaces greatly enhance the surface electric fields. We also investigated the influence of distance between the metal NPs and the Au grating surfaces . As the localized SPs interact with the propagating SPs, they should improve the photoelectric conversion system.…”

Section: Introductionmentioning

confidence: 99%

Multiple plasmonic effect on photocurrent generation of metal‐loaded titanium dioxide composite/dye films on gold grating surface

Chomkitichai

Ninsonti

Baba

et al. 2014

Surface & Interface Analysis

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a We demonstrate the multiple plasmonic effect on the photocurrent properties of photoanodes containing Ag or Au nanoparticles (NPs) loaded onto titanium dioxide film (Ag-TiO 2 or Au-TiO 2 ) on Au grating surfaces. Ag-TiO 2 or Au-TiO 2 nanocomposite particles are prepared by a flame spray pyrolysis route. The structures and morphologies of the prepared products are characterized by high-resolution transmission electron microscopy. The Ag-TiO 2 or Au-TiO 2 composite NPs are deposited by spin coating onto the Au grating surfaces. The photoanode electrode is a layered structure of blu-ray disc-recordable grating substrate/Au/Ag (or Au)-TiO 2 /dye/electrolyte/indium-tin oxide. The plasmonic effect is induced when Ag or Au NPs are located within the propagating surface plasmon (SP) field on the Au grating surface. The short-circuit photocurrent is increased by exciting the grating-coupled propagating SP on the Au gratings and is further enhanced by positioning the Ag or Au NPs within the grating-coupled SP field.

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“…Gold nanoparticles (AuNPs), a widely used gold nanomaterial, have high extinction coefficients and shape-dependent optical properties because of their localized surface plasmon resonance (LSPR) effect. AuNPs in suspensions can thus exhibit various colors, in response to biorecognition events, − commonly giving very sensitive detection or even allowing naked-eye readout. Because the color variation can be associated with an analyte by involving it into a growing and/or aggregating process of AuNPs, − AuNPs have been explored as an attractive type of plasmonic sensors , or used to perform plasmonic immune assays with the aid of natural enzymatic reactions.…”

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confidence: 99%

Strategy To Fabricate Naked-Eye Readout Ultrasensitive Plasmonic Nanosensor Based on Enzyme Mimetic Gold Nanoclusters

et al. 2015

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It is broadly interesting but remains a big challenge to explore nanomaterials-based methods to enable naked-eye observation and determination of ultratrace biomarkers and drugs. In this study, we developed a straightforward and extendable plasmonic nanosensor to enable visually quantitative determination of ultratrace target molecules through combining the use of enzyme-mimetic gold nanoclusters (AuNCs). Starting from sandwiched antibody-antigen (i.e., an analyte)-antibody structure, we conjugated AuNCs on the outer layer antibody to catalyze the decomposition of hydrogen peroxide used to reduce HAuCl4 into gold nanopartilces (AuNPs) for naked eye readout. This strategy is in theory applicable to all immunoreactions available and the protocol proposed to attach AuNCs onto an antibody is suitable to all proteins. The applicability of this type of nanosensor was validated by the determination of various ultratrace analytes such as protein avidin, breast cancer antigen, thyroid hormone, and even methamphetamine (MA), giving a naked-eye-readout limit of detection (LOD), down to 1.0 × 10(-20) M protein avidin, 7.52 × 10(-14) U/mL breast cancer antigen 15-3, 2.0 × 10(-15) mg/mL 3,5,3'-L-triiodothyronine and 2.3 × 10(-18) mg/mL MA. This strategy is thus considered an ultrasensitive way to fabricate plasmonic nanosensors, having wide and invaluable application potential in clinical, biological, and environmental studies, and in food quality control.

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Transmission Surface Plasmon Resonance Signal Enhancement via Growth of Gold Nanoparticles on a Gold Grating Surface

Cited by 20 publications

References 32 publications

Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO₂thin films

Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO₂thin films

Multiple plasmonic effect on photocurrent generation of metal‐loaded titanium dioxide composite/dye films on gold grating surface

Strategy To Fabricate Naked-Eye Readout Ultrasensitive Plasmonic Nanosensor Based on Enzyme Mimetic Gold Nanoclusters

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Transmission Surface Plasmon Resonance Signal Enhancement via Growth of Gold Nanoparticles on a Gold Grating Surface

Cited by 20 publications

References 32 publications

Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2thin films

Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO2thin films

Multiple plasmonic effect on photocurrent generation of metal‐loaded titanium dioxide composite/dye films on gold grating surface

Strategy To Fabricate Naked-Eye Readout Ultrasensitive Plasmonic Nanosensor Based on Enzyme Mimetic Gold Nanoclusters

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Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO₂thin films

Investigation of localized surface plasmon/grating-coupled surface plasmon enhanced photocurrent in TiO₂thin films