A5048625774- Spectroscopy Techniques in Biomedical and Chemical Research
- Spectroscopy and Chemometric Analyses
- Optical Imaging and Spectroscopy Techniques
- Spectroscopy and Laser Applications
- Semiconductor Quantum Structures and Devices
- Photonic and Optical Devices
- Magnetic Properties of Alloys
- Advanced Semiconductor Detectors and Materials
- Semiconductor Lasers and Optical Devices
- Photonic Crystal and Fiber Optics
- Optical Coatings and Gratings
- Magnetic Properties and Applications
- Laser Material Processing Techniques
- Advanced Fiber Optic Sensors
- Water Quality Monitoring and Analysis
- Thermal and Kinetic Analysis
- Laser Design and Applications
- Osteoarthritis Treatment and Mechanisms
- Chalcogenide Semiconductor Thin Films
- Microstructure and Mechanical Properties of Steels
- Infrared Thermography in Medicine
- Psychology of Development and Education
- Molecular Biology Techniques and Applications
- Psycholinguistics and Behavioral Studies
- Nanofabrication and Lithography Techniques
Moscow State Pedagogical University
2022
Russian Academy of Sciences
2016-2017
Prokhorov General Physics Institute
2008
Moscow State University of Fine Chemical Technologies
1997-2005
Moscow Architectural Institute
1997-2003
Central Research Institute of Ferrous Metallurgy I P Bardina
1975
Abstract Development of infrared (IR) fibers and hollow waveguides (HWGs) was in good progress to meet growing market demands for laser power delivery, flexible IR‐imaging remote process‐spectroscopy spectral range from 1 18 μm. Parameters IR‐glass fibers, polycrystalline IR‐fibers (PIR‐fibers) silver halides HWGs are compared enable optimal choice the production IR‐cables, spectroscopy probes multispectral bundles (Fig. 1).
Optical spectroscopy is increasingly used for cancer diagnostics. Tumor detection feasibility in human kidney samples using mid- and near-infrared (NIR) spectroscopy, fluorescence Raman has been reported (Artyushenko et al., Spectral fiber sensors diagnostics vitro. In Proceedings of the European Conference on Biomedical Optics, Munich, Germany, 21-25 June 2015). present work, a simplification NIR spectroscopic analysis was studied. The conventional high-resolution method tumor replaced by...
Matching pairs of tumor and non-tumor kidney tissue samples four patients were investigated ex vivo using a combination two methods, attenuated total reflection mid infrared spectroscopy fluorescence spectroscopy, through respectively prepared adjusted fiber probes. In order to increase the data information content, measurements on in both methods performed same 31 preselected positions. Multivariate analysis revealed synergic effect combining for diagnostics compared individual techniques.
Polycrystalline infrared (PIR) fibers are used for numerous applications, one of those being power delivery CO2 −lasers. However, the fiber tip surface’s transmittance cannot be increased with conventional antireflection coatings due to surface unevenness. Antireflection microstructures (ARMs) offer an alternative way increasing transmittance. In this work, ARMs were fabricated on AgClBr by single-pulse femtosecond laser ablation. A single-surface 92.8% at 10.6 µm, a −laser operation...
Limited operating bandwidth originated from strong absorption of glass materials in the infrared (IR) spectral region has hindered potential applications microstructured optical waveguide (MOW)-based sensors. Here, we demonstrate multimode regime up to 6.5 µm for hollow-core (HC) MOWs drawn borosilicate soft glass. Effective light guidance central HC (diameter ∼240 µm) was observed 0.4 despite high losses (0.4 and 1 dB/cm near- mid-IR, respectively). Additional optimization structure can...
The feasibility of direct (ie, without sample preparation) quantitative analysis total hydrocarbons and water in oil‐contaminated soils using mid‐infrared spectroscopy an attenuated reflection (ATR) probe has been investigated. Spectral characteristics unpolluted composed sand, clay, dolomite, humus have studied over the full range (4000‐400 cm −1 ). Spectra 25 typical soil samples containing varying levels oil analyzed a chalcogenide infrared fiber–based with ZrO 2 crystal as ATR element....
Cancers of the abdominal cavity comprise one most prevalent forms cancers, with highest contribution from colon and rectal cancers (12% human population), followed by stomach (4%). Surgery, as preferred choice treatment, includes selection adequate resection margins to avoid local recurrences due minimal residual disease. The presence functionally vital structures can complicate margins. Spectral analysis tissue samples in combination chemometric models constitutes a promising approach for...
A multispectral fiber optic probe has been developed that enables simultaneous analysis of various liquid and solid samples using attenuated total reflection mid-infrared spectroscopy fluorimetry. The design was optimized ray-tracing simulation the light propagation. Technical evaluation confirmed its output signal quality comparable to respective probes for single methods. capability deliver complementary chemical information from same measurement point illustrated model biological tissue....
Laser light sources are routinely applied building blocks in optical sensor technologies. While lasers emitting at a precisely defined wavelength within narrow emission bands, chem/bio-sensing applications frequently demand multi-wavelength illumination for addressing series of species. Instead using broadband radiation sources, it is viable strategy to efficiently combine the beams emitted from different maintain spectral brightness and yet cover extended regimes. In this study,...
The optical and electrical characteristics of p–n photodiodes based on monocrystalline n‐Si (wafers with ρ = 70 10 Ohm · cm SOI) implanted B + in the dose range 1 × 14 –1 15 сm −2 annealed at 900 °C (20 min) are studied. structures exhibit photosensitivity short‐wavelength infrared region (SWIR) different maximum intensities depending resistivity. Leakage currents also dose‐dependent. character SOI spectra is somewhat different. properties described terms formation extended defects deep...
Abstract A fiber probe has been developed that enables simultaneous acquisition of mid-infrared (MIR) and Raman spectra in the region 3100–2600 cm −1 . Multimodal measurement is based on a proposed ZrO 2 crystal design at tip an attenuated total reflection (ATR) probe. Mid-infrared ATR are obtained through pair chalcogenide infrared (CIR) fibers mounted base crystal. The both excitation weak signal from portion sample front using additional silica located plane perpendicular to CIR fibers....
A compact fiber-optic probe for combinational vibrational spectroscopy was developed and evaluated. The is capable of simultaneous acquisition mid-infrared ATR Raman spectra from the same spot in region 3100-2600 cm-1 which contains predominantly responses C-H stretching vibrations hydrocarbon residues that has been widely employed organic, analytic, biological, polymer chemistry.
Presentation of unique multispectral fiber system using 4 key spectral methods in broad 0.3-16µm range to enable remote control media composition changes with robust single and combi-fiber probes enhance process efficiency in-line.
Combination of FTIR spectroscopy with fiber optics provides a powerful diagnostic tool for diagnosing human diseases, including osteoarthritis. To detect cartilage degradation, an arthroscopic probe based on polycrystalline fibers was developed and evaluated equine specimen. The hook shape allows reaching significant portion the articular surface; flat tip ensures avoidance tissue destruction. Efficient QCL-coupling stable transmission PIR under bending assembling effective thin arthroscopy...
Silver halide polycrystalline infrared fibers (PIR) have unique properties such as excellent transmittance in the spectral range from 3 to 17 µm, while also being highly flexible, non-toxic, and non-hygroscopic. They are used industry medicine for CO 2 -laser power delivery, flexible imaging, remote process spectroscopy. While PIR possess a quite low attenuation (0.1-0.5 dB/m) 8-12 µm range, their total is limited by significant Fresnel reflections at fiber end faces due high refractive...
This article concerns the issue of academic motivation in context modern higher education. Higher education and employers formulate requirements for future professionals. A professional society is need competent graduates institutions that determine students' expectations learning process drives changes contents, scope new hierarchy motives. Understanding specifics directly determines efficiency as well formation human beings their personal motivation. The sample consisted young adults, male...