A5059426111- Electromagnetic wave absorption materials
- Diamond and Carbon-based Materials Research
- Advanced Fiber Laser Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Luminescence Properties of Advanced Materials
- Photoacoustic and Ultrasonic Imaging
- Thyroid Cancer Diagnosis and Treatment
- Biosensors and Analytical Detection
- Cardiovascular, Neuropeptides, and Oxidative Stress Research
- Mechanical and Optical Resonators
- Polymer Nanocomposites and Properties
- Nanowire Synthesis and Applications
- Carbon Nanotubes in Composites
- Graphene and Nanomaterials Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Advanced Energy Technologies and Civil Engineering Innovations
- Smart Materials for Construction
- Pulmonary Hypertension Research and Treatments
- Plasmonic and Surface Plasmon Research
- Carbon and Quantum Dots Applications
- Cardiovascular Disease and Adiposity
- Cardiovascular Effects of Exercise
- Solid-state spectroscopy and crystallography
- Hormonal Regulation and Hypertension
- Lanthanide and Transition Metal Complexes
Center for Physical Sciences and Technology
2022-2024
Belarusian State University
2019-2022
Abstract Monitoring of tiny intracell temperature variations is high importance to understand the mechanisms exothermic/endothermic processes inside living cells. Small shifts in thermal balance may drastically influence cell functioning and induce pathological conditions. By using biocompatible diamond single‐crystal microneedles enriched with nitrogen‐vacancy (NV)/silicon‐vacancy (SiV) color centers, this study demonstrates all‐optical vitro monitoring physiologically significant range...
A systematic spectroscopic characterization of highly homogeneous water suspensions 'buckydiamonds' comprising sp3cubic nanodiamond (ND) core covered with disordered sp2shell densely decorated oxygen-containing groups demonstrates the excitation-wavelength-dependent photoluminescence (PL) given by at least four types specific structures on ND surface (hydroxyl, C=O containing ketones, carboxylic anhydrides, and carboxyl groups). PL properties NDs possess concentration-dependent behavior...
We propose a simple, fast, and low-cost method for producing Au-coated black Si-based SERS-active substrates with proven enhancement factor of 106. Room temperature reactive ion etching silicon wafer followed by nanometer-thin gold sputtering allows the formation highly developed lace-type Si surface covered homogeneously distributed islands. The mosaic structure deposited use Au-uncovered domains Raman peak intensity normalization. fabricated SERS have prominent uniformity (with less than...
Papillary thyroid carcinoma (PTC) is one of the most common, well-differentiated carcinomas gland. PTC nodules are often surrounded by a collagen capsule that prevents spread cancer cells. However, as malignant tumor progresses, integrity this protective barrier compromised, and cells invade surroundings. The detection capsular invasion is, therefore, crucial for diagnosis choice treatment development new approaches aimed at increase diagnostic performance great importance. In present study,...
We demonstrated that wide-field second harmonic generation (SHG) microscopy of lung tissue in combination with quantitative analysis SHG images is a powerful tool for fast and label-free visualization the fibrosis pathogenesis pulmonary arterial hypertension (PAH). Statistical revealed changes collagen content morphology during monocrotaline-induced PAH progression rats. First order statistics disclosed dependence overproduction on time, indicated tightening fiber network around blood...
Black silicon (bSi) is a highly absorptive material in the UV-vis and NIR spectral range. Photon trapping ability makes noble metal plated bSi attractive for fabrication of surface enhanced Raman spectroscopy (SERS) substrates. By using cost-effective room temperature reactive ion etching method, we designed fabricated profile, which provides maximum signal enhancement under excitation when nanometrically-thin gold layer deposited. The proposed substrates are reliable, uniform, low cost...
The electromagnetic properties of chloroprene rubber after long-term ultraviolet ageing, oil immersion and thermal degradation were experimentally investigated in the frequency range from 1 kHz up to THz.Ageing was shown terms mechanical change complex dielectric permittivity.Within whole decrease permittivity observed treatment combined with comparison stored under normal conditions.In contrast, ageing without leads increase rubbers all ranges.A non-invasive express method detection is...
Charge Transfer Luminescence (CTL) processes play a major roles in Yb:YAG laser materials act as source of energy losses decrease the performance this material. In work, temperature dependence CTL single crystal was investigated. A 375-nm picosecond used excitation source. It shown that change affects emission intensity and position maximum occurring between perturbated F+ centers Yb3+ ions. The increase caused blueshift CTL, while have inverted U-shape. measured luminescence lifetime CLT...
The identification of tumor capsular invasion as a sign malignancy is currently employed in traditional histopathology routines for thyroid nodules. However, its limitations are associated with the assessment criteria invasion, which often lead to disagreements among observers. aim this paper introduce widefield imaging technique combined quantitative collagen analysis identify areas neoplasms. In study, we application polarization-resolved second harmonic generation microscopy entire nodule...
Biocompatible single-crystal diamond needles enriched with nitrogen and silicon vacancy (NV SiV) color centers in a controllable manner via modified chemical vapor deposition synthesis are employed by Lena Golubewa, Polina Kuzhir co-workers (article number 2200631) for improved all-optical thermometry based on the temperature dependence of SiV zero-phonon-line (ZPL) peak position, FWHM, photoluminescence lifetime, ratiometrically determined ZPL intensity. Simultaneous spectrally separated...
The universal method of creating inexpensive layered radar absorbing structures capable operating within a wide frequency range has been proposed and experimentally investigated. model the created absorber can be represented as two-layer structure mounted on metal substrate. top layer is resistive second dielectric layer, with given thickness. nanostructured carbon-introduced polyester film was used layer. Silicone rubber thickness from 0.6 to 4 mm Aluminum foil an adhesive experimental...
We demonstrate that commercially available window tinting films could be used multifunctionally, i.e., for electromagnetic shielding and absorption at frequencies below 1 THz along with visible light ultraviolet protection. The fine control of the film optical properties by their structural composition can also to extend performance lower frequency ranges, terahertz microwave. two types thin protective loaded either carbon or iron oxide micro- nano-inclusions were studied in microwave (12–18...
The stability of blue and green luminescent graphene quantum dots doxorubicin aggregates was evaluated by optical methods. During this study, the absorption fluorescence spectra GQD DOX, as well quenching kinetics, were measured in different pH environments using stationary spectrophotometry aim study is to evaluate changes investigate formation these compounds over time environments.
The photoluminescence (PL) properties of nanodiamonds (NDs) produced by light hydrodynamic pulse (LHDP) technology were investigated and their potential applications in the field sensing discussed. PL characteristics ND suspensions are shown to be complex depend on excitation wavelength. behavior is believed originate from composite shell formed during LHDP synthesis. Environmental changes have also been affect spectroscopic shell. Specifically, pH dependence intensity measured at different...
Charge Transfer Luminescence (CTL) processes play a major roles in Yb:YAG laser materials act as source of energy losses decrease the performance this material. In work, temperature dependence CTL single crystal was investigated. A 375-nm picosecond used excitation source. It shown that change affects emission intensity and position maximum occurring between perturbated F+ centers Yb3+ ions. The increase caused blueshift CTL, while have inverted U-shape. measured luminescence lifetime CLT...