RETRACTED: Plasmonic Nanostructures Prepared by Soft UV Nanoimprint Lithography and Their Application in Biological Sensing

Barbillon, Grégory

doi:10.3390/mi3010021

Cited by 41 publications

(33 citation statements)

References 19 publications

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“…This mechanism is the fundamental of sensitivity of chiral sensors [24][25][26][27]. The shift of the resonance frequency with respect to the dielectric layer between chiral inclusions can be defined by the following equation [28];…”

Section: Simulation and Experimental Setupmentioning

confidence: 99%

Chiral Metamaterial Based Multifunctional Sensor Applications

Karaaslan¹,

Bakır²

2014

PIER

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Abstract-In this work, sensor abilities of a chiral metamaterial based on split ring resonators with double splits (SRDS) are demonstrated both theoretically and experimentally in X band range. This study is based on transmission measurements and simulations monitoring the resonance frequency changes with respect to the thickness of the sensing layer and permittivity values. Experimental and simulated results show that the resonance frequency of the chiral metamaterial based SRDS sensor is linearly related to the permittivity and the thickness of the sensor layer which creates a suitable approach for sensing environment and organic parameters. When the sensor layer filled with the related material, changes in the tissue temperature, sand humidity and calcium chloride density lead to resonance frequency changes. The physical mechanisms are explained by using both equivalent circuit model and the fundamental sensitivity theorem of chiral sensors. This is the first study investigating a sensing mechanism based on the chiral metamaterials in X band range.

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Section: Simulation and Experimental Setupmentioning

confidence: 99%

Chiral Metamaterial Based Multifunctional Sensor Applications

Karaaslan¹,

Bakır²

2014

PIER

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“…Since the trend of smaller AuNPs exhibiting higher surface sensitivity is valid for particles up to 80 nm in diameter and an ad-layer of 15 nm in thickness 41 , the ensemble hypothesis should be applicable in a wide range of situations as long as the four premises are satisfied. This allows the interpretation 11 of ensemble narrowing observed in the literature 13,[23][24][25][26][27] and ensures the adaptability of the sensing platform we will propose in section 3.3. Within an ensemble of AuNPs, since D0 is smaller than D1, LSPR0 is larger than LSPR1, the ELW decreases as a result of thiolation.…”

Section: Resultsmentioning

confidence: 93%

“…3A) confirms the above conclusion and the narrowing effect observed in the literature. 13,[23][24][25][26][27] In short, the ELW is decreased due to a differential behavior that arises from the ensemble size distribution: smaller particles corresponding to the blue side of a spectrum display larger redshifts than the larger ones that contribute to the red side of the spectrum.…”

Section: Resultsmentioning

confidence: 99%

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Narrowing of Plasmon Resonance Peaks as an Ensemble Effect

2018

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The frequency of localized surface plasmon resonance (LSPR) displayed by gold nanoparticles (AuNPs) redshifts as a function of their local refractive index, which renders them valuable transducers for sensing applications. An ensemble hypothesis is presented herein, along with spectroscopic evidence, using the biotin-streptavidin system on immobilized AuNPs to interpret the decrease in ensemble linewidth (ELW) consistently observed upon functionalization of plasmonic nanoparticles and the subsequent analyte binding. These results demonstrate that ELW can be used to monitor recognition reactions, providing spectral details and a possible sensitivity enhancement to the conventional wavelength sensing. A novel sensing platform allowing the simultaneous measurement of both LSPR wavelength and ELW is proposed, which not only combines the advantages of both parameters but also permits real-time measurement and miniaturization.

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“…In the past, the electron-beam lithography (EBL) [15] and photolithography [16] methods can be used to fabricate the nanoparticle arrays for LSPRs' structures. Nanosphere lithography (NSL) [17,18] is one of the most low-cost and high-efficiency methods for producing periodically and geometrically tunable nanostructure arrays.…”

Section: Introductionmentioning

confidence: 99%

Effect of Refractive Index of Substrate on Fabrication and Optical Properties of Hybrid Au-Ag Triangular Nanoparticle Arrays

Wencai¹,

Xiaomeng²,

Zijie³

et al. 2015

激光与光电子学进展

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Abstract:In this study, the nanosphere lithography (NSL) method was used to fabricate hybrid Au-Ag triangular periodic nanoparticle arrays. The Au-Ag triangular periodic arrays were grown on different substrates, and the effect of the refractive index of substrates on fabrication and optical properties was systematically investigated. At first, the optical spectrum was simulated by the discrete dipole approximation (DDA) numerical method as a function of refractive indexes of substrates and mediums. Simulation results showed that as the substrates had the refractive indexes of 1.43 (quartz) and 1.68 (SF5 glass), the nanoparticle arrays would have better refractive index sensitivity (RIS) and figure of merit (FOM). Simulation results also showed that the peak wavelength of the extinction spectra had a red shift when the medium's refractive index n increased. The experimental results also demonstrated that when refractive indexes of substrates were 1.43 and 1.68, the nanoparticle arrays and substrate had better adhesive ability. Meanwhile, we found the nanoparticles formed a large-scale monolayer array with the hexagonally close-packed structure. Finally, the hybrid Au-Ag triangular nanoparticle arrays were fabricated on

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RETRACTED: Plasmonic Nanostructures Prepared by Soft UV Nanoimprint Lithography and Their Application in Biological Sensing

Cited by 41 publications

References 19 publications

Chiral Metamaterial Based Multifunctional Sensor Applications

Chiral Metamaterial Based Multifunctional Sensor Applications

Narrowing of Plasmon Resonance Peaks as an Ensemble Effect

Effect of Refractive Index of Substrate on Fabrication and Optical Properties of Hybrid Au-Ag Triangular Nanoparticle Arrays

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