Plasmonic particles of colloidal silver in high-resolution recording media

Andreeva, O. V.; Андреева, Н. В.; Kuzmina, T. B.

doi:10.1134/s0030400x17010027

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…They can be fabricated with tight control over the optical properties as well as the mechanical properties such as the porosity (linked to the pore size) and thickness [93]- [95]. They have been used to create substrates for recording holograms and also for point-of-care diagnosis of non-small cell lung cancer [94], [96]. These substrates provide a large surface area for interaction and are mechanically robust and chemically stable.…”

Section: E) Cellulose Membrane Substratementioning

confidence: 99%

Fibre Optic SERS Probes For Remote Sensing

Pandya¹

2021

Preprint

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Surface Enhanced Raman Spectroscopy (SERS) enhances spontaneous Raman spectroscopy by the virtue of plasmon resonance of nanoparticles. Clinical application of SERS is challenging as nanoparticles remain in the body for long periods of time and a full toxicity analysis has yet to be extensively studied. In this study, Nanosphere lithography (NSL) was used to create optical fibers with nanoparticle enhanced tips for remote sensing using SERS. A custom designed RS collection setup was created for optimal collection of spectra from the optical fibers. It was found that an optical fiber with 0.5 numerical aperture (NA) allowed for better detection of Raman peaks while mitigating the fluorescence background of the optical fiber without any optical filters. Such a sensing platform can potentially be used to temporarily introduce nanoparticles into a sensing environment as it allows retracting the nanoparticles along with the tip. Nanoporous SERS platform has been fabricated using nanoporous silica glass with 7 nm and 17 nm pore diameters. An inexpensive fabrication approach of sputter deposition of Au layers was employed on prefabricated nanoporous silica glasses. 7 nm pore glasses provided larger enhancement than the glasses with 17 nm pores. A gold layer thickness of 25 nm was observed to produce largest enhancements. Nanoporous SERS substrates allow a larger effective SERS area compared to NSL based fabrication substrates and such nanoporous structures can be potentially fabricated on optical fiber tips for remote sensing. Finite Element Modeling (FEM) method was implemented for simulating single nanoparticles, an infinite periodic array of nanoparticles and nanoporous films using COMSOL Multiphysics software package. The extinction spectra obtained theoretically were found to match the experimental results for single nanoparticles. The maximum enhancement for the periodic array was two orders of magnitude larger than single particles while the integrated (average) enhancement was only two and a half times larger. Nanoporous films were also modelled using the FEM technique. Preliminary clinical data were collected from excised breast tissues for evaluating RS as a tool for cancer diagnostics. Spectral peaks from healthy tissues were found to be prominent than cancerous tissues and further experiments are needed to create a multivariate classification model for diagnostics.

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Section: E) Cellulose Membrane Substratementioning

confidence: 99%

Fibre Optic SERS Probes For Remote Sensing

Pandya¹

2021

Preprint

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“…Practical class demonstrates how real setup on the analysis of food products really works; "Applied holography": lecture gives an overview of holographic method of recording and reconstruction of information and the most perspective applications. In addition, the latest researches in the area of applications of holographic method are discussed, and an overview of existing and emerging materials for holography is given 1 , giving the opportunity not only to assess the physics of the process but also understand the technical difficulties and challenges that exist today in this scientific area. At practical class each participant could record display hologram and take it as a present from laboratory.…”

Section: Workhops On Photonics and Optoinformaticsmentioning

confidence: 99%

Workshops on photonics and optoinformatics for school students at ITMO University

Андреева

Ismagilov

Kuzmina

et al. 2017

14th Conference on Education and Training in Optics and Photonics: ETOP 2017

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The program of workshops on photonics and optoinformatics was created at Department of Photonics and Optical Information Technologies in ITMO University by specialists in scientific and educational areas. These workshops are carried out for students of the best schools of Saint-Petersburg specialized in physics and mathematics, such as Gubernatorial Lyceum and Presidential Lyceum, and best schools of Russia. Every year about 500 of school students come to our workshops, including Annual summer educational practice.

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“…The methods of increasing their diffractive efficiency are investigated by IFMO [68][69]. The material with the great color transfer Ultimate-08 is developed by Alkiss Lembessis.…”

Section: Holographic Approach For the Creating Of Intraocular Lensesmentioning

confidence: 99%

Methods for creation of diffractive intraocular lenses

Gornostay¹

2017

Collection of Selected Papers of the III International Conference on Information Technology and Nanotechnology

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Hybrid intraocular lenses (IOLs) are diffractive-refractive lenses with pseudoaccomodation. They can imitate the optical system of health eye more precisely, than other types. These lenses have 2-3 or more stable focuses. I proposed a comparison of hybrid IOLs: their shape, their processing, their aberrations and diffractive efficiency. I showed a review of new methods for correction of chromatism and I proposed a method of using volume holograms. I discussed features of possible materials.

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Plasmonic particles of colloidal silver in high-resolution recording media

Cited by 4 publications

References 6 publications

Fibre Optic SERS Probes For Remote Sensing

Fibre Optic SERS Probes For Remote Sensing

Workshops on photonics and optoinformatics for school students at ITMO University

Methods for creation of diffractive intraocular lenses

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