A5041975035- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
- Seismic Imaging and Inversion Techniques
- Advanced Fiber Optic Sensors
- Photonic Crystals and Applications
- Seismic Waves and Analysis
- Image and Signal Denoising Methods
- Advanced Biosensing Techniques and Applications
- Plasmonic and Surface Plasmon Research
- Drilling and Well Engineering
- Underwater Acoustics Research
- Geotechnical and Geomechanical Engineering
- Speech and Audio Processing
- Blind Source Separation Techniques
- Photodynamic Therapy Research Studies
- Biosensors and Analytical Detection
- Cancer and Skin Lesions
- Seismology and Earthquake Studies
- Monoclonal and Polyclonal Antibodies Research
- Graphene research and applications
- Zoonotic diseases and public health
- NMR spectroscopy and applications
- Yersinia bacterium, plague, ectoparasites research
- Engineering Diagnostics and Reliability
- Advanced Fiber Laser Technologies
Institute of Glass
2016-2024
Glass Technology Services
2023
St Petersburg University
2018-2020
Saratov State University
2015-2019
Geologorazvedka (Russia)
2019
Microstructured optical waveguides (MOW) are of great interest for chemical and biological sensing. Due to the high overlap between a guiding light mode an analyte filling one or several fiber capillaries, such systems able provide strong sensitivity with respect variations in refractive index thickness materials. Here, we introduce novel type functionalized MOWs whose capillaries coated by layer-by-layer (LBL) approach, enabling alternate deposition silica particles (SiO2) at different...
Optical fibers are widely used in bioimaging systems as flexible endoscopes that capable of low-invasive penetration inside hollow tissue cavities. Here, we report on the technique allows magnetic resonance imaging (MRI) hollow-core microstructured (HC-MFs), which paves way for combing MRI and optical bioimaging. Our approach is based layer-by-layer assembly oppositely charged polyelectrolytes magnetite nanoparticles inner core surface HC-MFs. Incorporation into polyelectrolyte layers...
A sensor based on microstructured waveguides (MWGs) with a hollow core inner surface covered polyelectrolyte-layer-stabilized gold nanostars was developed for the SERS sensing of dissolved analytes. polyelectrolyte-layer coating over glass cladding served as spacer, reducing nonlinear optical effects in near plasmonic hotspots nanoparticles, stabilizing agent thermodynamically unstable and an fine-tuning MWG bandgaps. This approach can be used to construct different kinds sensors analytes,...
Photonic crystal fibers (PCFs) with a hollow core are one of the most promising solid support fiber-optic sensors. The main advantages PCF as sensor elements in clinical analysis minimization optical interactions from sample and ability to analyze small volume samples. At same time, low sorption capacity glass which is basic material for fabrication PCF, limits their use development biosensors. Modification inner surface can be solution problem. In this work synthesis self-assembled films...
In this paper, we numerically and experimentally propose a novel hollow-core microstructured optical fiber (HC-MOF) biosensor for refractive index determination. The sensing mechanism of the proposed sensor is based on photonic bandgap effect location transmission maxima fiber, which strongly depend liquid analyte RI filled in core. HC-MOF demonstrates spectral sensitivity 5636.3 nm/RIU with detection range 1.333 to 1.3385 different ratios plasma blood serum our experimental studies. here...
The use of photonic crystal fibers as a basis elements for biosensor construction is perspective trend. advantages this approach are the micro and nano volumes samples significant strengthening analytical signal while increasing optical path length. Quantum dots most promising fluorescent markers in based analysis. quantum dots, case, associated with stability, wide range excitation extremely narrow high luminescence intensity. In work we have investigated behavior properties CdSe core-shell...
Relevance . As part of ensuring sanitary and epidemiological well-being, in the territory natural plague foci Russian Federation, according to indications, population is vaccinated against this infection. The lack a unified scheme for evaluating effectiveness vaccination dictates need develop universal express methods that allow screening studies anti-plague immunity, including field. Aims. To evaluate method direct detection antibodies Yersinia pestis biological material using...
Summary The paper describes an operational experience of crosshole seismic testing (CST) applied on a real object. features field survey, data processing and analysis results are demonstrated. On the site three methods borehole survey were actually used: vertical profiling (VSP), reversed VSP (RVSP), CST. was implemented in order to build initial model. RVSP necessary clarify properties upper waterless part section. CST basis for determining It shown that modern equipment software allow...
The advantages of microstructured fibers application to photometrical determination positive and negative agglutination reaction is discussed. One can use this method for blood typing Rh affinity. based on discrimination the scattering properties probes with a specific non-specific agglutinating serum.
The luminescence of the quantum dots different colors glow in samples photonic crystal fibers modified with self-organizing layers polyaniline was studied.
Summary In systems based on fiber-optic sensors, an optical fiber can serve as both a medium for transmitting information and sensitive element. The DAS (Distributed Acoustic Sensing) technology deploys sensor measuring acoustic effects with high spatial resolution over entire length of receiving system. range application this is very wide includes the protection perimeters long objects, monitoring roads railways, pipelines condition, dams other complex highly engineering structures,...
Optical sensing is a powerful tool for recognition interactions in biosystems. Nowadays sensor systems allow to determinate the biomolecules biological fluids with high sensitivity, reproducibility and minimum standard error. Usually analyses are carried out heterogeneous format, which significantly complicates procedure increases single analysis cost. The swap from homogeneous format promising solution. Microstructured optical fibers (MOFs) possible platform creation of such sensors....
Summary At present, when carrying out offshore seismic operations using the HR/VHR/UHR (high-resolution, very-high-resolution and ultra-high-resolution) techniques, various types of sources elastic waves are used, such as electric sparker ("sparkers"), electrodynamic ("boomers") small volume air guns. The signature these differs significantly from each other depends on parameters their operation in case. In addition, streamer towing depth affects resulting waveform. Typically, a includes...
The microstructured waveguide biosensor is described. was tested in experiments for analysis of water, tea, coffee, wine and strong drinks. has a high sensitivity to the optical properties medium, filling up waveguide's core. small size, good integration ability compatibility use industrial settings make such very promising various applications, including food industry.
Hot-points in biosensors development, such as an application of new bifunctional platforms with example photonic crystal fibers and multiplexing labels multiloaded quantum dots nanostructures are discussed.
Microstructural optical waveguides with the hollow core are actively studied as a promising support for heterogeneous immunoassay in development of new biosensor elements medicine and biology. Overcoming limitations associated low sorption capacity glass used production is crucial step this assay format. In work possibility silanization microstructural using (3-glycidyloxypropyl) trimethoxysilane their further application to enzymatic was studied.
Photonic crystal fibers with hollow core (HC PCFs) are a specific class of optical characterized by microstructure periodic holes oriented along fiber. The combination HC PCF Raman spectroscopy for biosensors creation is attractive in the terms low sample volume, possibility to increase integration time without degradation and maintaining constant focus during experiments. Here we propose layer-by-layer polyelectrolyte coating inner surface order obtain charge-selective absorption analyte,...
Summary This paper considers the possibilities of simultaneous source technology, ways processing data obtained by such sources, and prospects for using sources this type in high ultra resolution seismic surveys. The method separation each is proposed. power technology on model estimated.