Smart Component for Switching of Plasmon Resonance by External Electric Field

Švanda, Jan; Kalachyova, Y.; Slepička, Petr; Švorčı́k, Václav; Lyutakov, Oleksiy

doi:10.1021/acsami.5b08334

Cited by 32 publications

(26 citation statements)

References 39 publications

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“…[1][2][3][4] In particular, in the field of surfaceenhanced Raman spectroscopy (SERS), the application of surface plasmon phenomena represents a unique method for the detection of biomolecules, drugs, explosives, organic pollutants, heavy metals as well as in situ monitoring of chemical reactions. [5][6][7][8][9][10] Taking into account the basic requirements for the analysis of these compounds, an analytical approach must satisfy several requirements: (i) be fast and straightforward, (ii) achieve the detection limits that are as low as possible, and (iii) give reproducible and reliable results.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles

Kalachyova

Martin

Jeřábek

et al. 2017

Phys. Chem. Chem. Phys.

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Surface-enhanced Raman scattering (SERS) spectroscopy is an extremely sensitive analytical technique that is capable of identifying the vibration signatures of target molecules up to single-molecule sensitivity. In this work, the ultrahigh sensitivity of SERS has been achieved through the immobilization of sharp-edges specific nanoparticles -so-called gold multibranched NPs (AuMs) on the silver grating surface through the biphenyl dithiol. This approach allows combining the extremely high SERS enhancement factor (better than that in the case of AuMs immobilized on the flat Ag film) with perfect reproducibility of Raman signals. The grating was created on the polymer substrate using the excimer laser modification and further metal deposition and has an ''active'' area 5 Â 10 mm 2 , enabling the macroscale SERS substrate preparation. The wet-chemistry synthesized AuMs were then immobilized on the grating surface and the produced structure allows SERS measurements with a portable Raman spectrophotometer. The prepared structures were checked using the AFM, UV-Vis, and Raman spectroscopy techniques.

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Section: Introductionmentioning

confidence: 99%

Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles

Kalachyova

Martin

Jeřábek

et al. 2017

Phys. Chem. Chem. Phys.

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“…Plasmonically active metal nanostructures have become a key element in a variety of scientific and technical fields . Their unique interaction with light enables the preparation of optically triggerable catalytic systems, extremely sensitive sensor platforms, and photonic modulators with unprecedented speed . Plasmon‐based sensors are especially favorable due to the extremely low detectable concentration and remarkable versatility of analyte molecules, varying from inorganic ions to biomolecules .…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3] Their unique interaction with light enables the preparation of optically triggerablec atalytic systems, extremely sensitive sensor platforms,a nd photonic modulators with unprecedented speed. [4][5][6][7] Plasmon-based sensors are especially favorable due to the extremelyl ow detectable concentration and remarkable versatility of analyte molecules,v arying from inorganic ions to biomolecules. [8][9][10] Superposition of the electromagnetic field on the plasmon-active surfaceo fm etallic nanostructures can significantly amplify the Raman signal from the surrounding analyte.…”

Section: Introductionmentioning

confidence: 99%

Large‐Scale, Ultrasensitive, Highly Reproducible and Reusable Smart SERS Platform Based on PNIPAm‐Grafted Gold Grating

et al. 2017

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A smart plasmonic sensor based on periodic gold gratings grafted with poly(N‐isopropyl acrylamide) (PNIPAm) has been designed and realized. A periodic gold structure was created on the polymer backing with an excimer laser (1×2 cm2 modified area) and was subsequently covered by thin gold film. In the next step, a 7 nm thick PNIPAm layer was grafted to the gold surface through a two‐step procedure: covalent attachment of 4‐carboxybenzil groups followed by carboxyl groups activation and their coupling with amino‐terminated PNIPAm. Surface properties of the prepared structure and their switchable behavior were investigated using refractometry, wettability measurements, AFM in water, cyclic voltammetry, and pH‐ and temperature‐dependent Z‐potential measurements. The structure enables effective entrapment and SERS detection of azo dyes, significant reduction of minimal detectable concentration of target molecules, and a detection limit down to femtomolar concentrations. Excitation of plasmons on the well‐ordered surface structure also gives excellent reproducibility for SERS along the particular sample surface and as well as on different samples. Additionally, the reversible switching of wettability under repeated temperature changes on the gold plasmonic platform allows multiple uses of the developed system.

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“…We started from the piezoresponsive PVDF/PMMA film, prepared by a solvent evaporation method. The composition of polymer blend (PVDF/PMMA = 1/1 wt%) and preparation procedure were chosen to achieve optimal piezoresponse of polymers' film, which in turn leads to surface flattening under the application of EF …”

Section: Resultsmentioning

confidence: 99%

Multiresponsive Wettability Switching on Polymer Surface: Effect of Surface Chemistry and/or Morphology Tuning

Guselnikova

Postnikov

Elashnikov

et al. 2019

Adv Materials Inter

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The design of responsive surfaces with reversible and fast wettability switching by external control represents one of the most urgent challenges in the surface and interfaces sciences. Especially surfaces responding to more than one stimulus are expected to find even broader range of applications. In this paper, a multiresponsive polymer surface is proposed and investigated that is able to respond to the pH, temperature, and electric field. The surface triggering is subdivided into chemically‐based (pH and temperature) and morphologically‐based (application of electric field). The various combinations of three external triggering are applied separately, conjunctively, or adversarily for detailed investigation of their joint action effect. It is found that the most significant changes in wettability switching are achieved by the simultaneous combination of the reversible chemistry and morphology switching. Oppositely, the utilization of the wettability switching through the combination of chemical stimuli produces negative interference of surface response, with the suppression of stimuli efficiency.

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Smart Component for Switching of Plasmon Resonance by External Electric Field

Cited by 32 publications

References 39 publications

Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles

Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles

Large‐Scale, Ultrasensitive, Highly Reproducible and Reusable Smart SERS Platform Based on PNIPAm‐Grafted Gold Grating

Multiresponsive Wettability Switching on Polymer Surface: Effect of Surface Chemistry and/or Morphology Tuning

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