3D-quantification of biomolecular covers using surface plasmon-polariton resonance experiment

Chegel, V. I.; Chegel, Yu.; Guiver, Michael D.; Lopatynskyi, A. M.; Lopatynska, Olga; Lozovski, V.

doi:10.1016/j.snb.2008.04.012

Cited by 13 publications

(12 citation statements)

References 11 publications

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“…Ordered gold nanoparticle arrays were produced by means of NIL technique according to the protocol described earlier [ 24,25]. Briefly, Pyrex glass substrates were cleaned in a 1:1 piranha solution (30% H2O2:29% NH4OH), rinsed with a copious amount of DI:H2O, and dried using N2.…”

Section: Fabrication Of Ordered Nsa Samplesmentioning

confidence: 99%

Au nanostructure arrays for plasmonic applications: annealed island films versus nanoimprint lithography

Lopatynskyi¹,

Lytvyn²,

Назаренко³

et al. 2016

Nano Online

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(http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This paper attempts to compare the main features of random and highly ordered gold nanostructure arrays (NSA) prepared by thermally annealed island film and nanoimprint lithography (NIL) techniques, respectively. Each substrate possesses different morphology in terms of plasmonic enhancement. Both methods allow such important features as spectral tuning of plasmon resonance position depending on size and shape of nanostructures; however, the time and cost is quite different. The respective comparison was performed experimentally and theoretically for a number of samples with different geometrical parameters. Spectral characteristics of fabricated NSA exhibited an expressed plasmon peak in the range from 576 to 809 nm for thermally annealed samples and from 606 to 783 nm for samples prepared by NIL.Modelling of the optical response for nanostructures with typical shapes associated with these techniques (parallelepiped for NIL and semi-ellipsoid for annealed island films) was performed using finite-difference time-domain calculations. Mathematical simulations have indicated the dependence of electric field enhancement on the shape and size of the nanoparticles. As an important point, the distribution of electric field at so-called 'hot spots' was considered. Parallelepiped-shaped nanoparticles were shown to yield maximal enhancement values by an order of magnitude greater than their semi-ellipsoid-shaped counterparts; however, both nanoparticle shapes have demonstrated comparable effective electrical field enhancement values. Optimized Au nanostructures with equivalent diameters ranging from 85 to 143 nm and height equal to 35 nm were obtained for both techniques, resulting in the largest electrical field enhancement. The application of island film thermal annealing method for nanochips fabrication can be considered as a possible cost-effective platform for various surface-enhanced spectroscopies; while the NIL-fabricated NSA looks like more effective for sensing of small-size objects.

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Section: Fabrication Of Ordered Nsa Samplesmentioning

confidence: 99%

Au nanostructure arrays for plasmonic applications: annealed island films versus nanoimprint lithography

Lopatynskyi¹,

Lytvyn²,

Назаренко³

et al. 2016

Nano Online

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“…[132][133][134] The approach accounts for the local-field effects, and thus allows for estimating correctly the influence of the system shape and dimensions on its MO response. In addition to the localized surface plasmon characteristic of nano-objects, propagating SPPs are of great application relevance 135 in spectroscopy, 136 microscopy, 137 and sensorics, [138][139][140] to name a few.…”

Section: Magneto-optical Propertiesmentioning

confidence: 99%

Multifunctional Magnetoplasmonic Nanomaterials and Their Biomedical Applications

Zhou¹,

Zou²,

Koh³

et al. 2014

j biomed nanotechnol

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Multifunctional magnetoplasmonic (Au-Fe x O y ) nanomaterials are characterized by some features of iron oxide and gold, such as surface chemistry, special optical properties, and superparamagnetic properties, which have helped to draw much attention to their biomedical applications. In this review, the state of the art of this rapidly developing field is described. We review the developments in different approaches to integrating the magnetic and plasmonic properties in a single nanoparticle with different morphological traits. Specific plasmonic and magneto-optical properties of magnetoplasmonic nanoparticles are explained; this information should shed light on the future development of multifunctional magnetoplasmonic nanomaterials. We also review cytotoxicity of magnetoplasmonic nanoparticles by in vitro and in vivo studies. With the multifunctional properties of magnetoplasmonic nanomaterials, a variety of applications such as biosensor, bioseparation, multimodal imaging, and therapeutics is possible and is highlighted here, in addition to outlining the future trends and perspectives of these sophisticated nanocomposites.

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“…Let us suppose that the meso-particles form the rare array, which means that average distances between the particles are larger than linear dimensions of them. Taking into account the results of the works [14,19,20], one can consider the meso-particles as the point-like dipoles which polarises as the nonpointness object with the defined shape and dimension. Thus the second term in the right part of Equation (8) can be reduced to…”

Section: Absorption Spectra Of Two-dimensional Cone-like Particle Arraysmentioning

confidence: 99%

Local Field Effects in the Luminescence of the Cone-Like Nanohills

Lozovski¹,

Medvíd²,

Piatnytsia³

2012

OPJ

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The main purpose of the work is to clarify the physical mechanisms which leads to the specific spectrums of the structures [1-3]. The work is based on the ideas of the effective susceptibility. The effective susceptibility of cone-shaped nanohills located at the semiconductor surface is obtained in the frame of local-field approach. The knowledge of the effective susceptibility allows to calculate the optical absorption profiles. Using the approach similar to Levshin rule the photoluminescence spectra were calculated. Obtained results were compared with experimental luminescence spectra obtained earlier. The significant machanisms, that define the peculiarities of the spectra, is the shape of the nanoclasters and the inhomogeneity of the nanohills array are justificated. The main issue of the work is that the cause of the luminescence spectrums has electodynamical nature without spatial quantisation effects

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3D-quantification of biomolecular covers using surface plasmon-polariton resonance experiment

Cited by 13 publications

References 11 publications

Au nanostructure arrays for plasmonic applications: annealed island films versus nanoimprint lithography

Au nanostructure arrays for plasmonic applications: annealed island films versus nanoimprint lithography

Multifunctional Magnetoplasmonic Nanomaterials and Their Biomedical Applications

Local Field Effects in the Luminescence of the Cone-Like Nanohills

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