A5027075577- 2D Materials and Applications
- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Graphene research and applications
- MXene and MAX Phase Materials
- Perovskite Materials and Applications
- Advanced biosensing and bioanalysis techniques
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Metamaterials and Metasurfaces Applications
- Near-Field Optical Microscopy
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Copper Interconnects and Reliability
- ZnO doping and properties
- Spectroscopy Techniques in Biomedical and Chemical Research
- Semiconductor materials and devices
- Laser-Ablation Synthesis of Nanoparticles
- Boron and Carbon Nanomaterials Research
- Biosensors and Analytical Detection
- Advanced Antenna and Metasurface Technologies
- Photorefractive and Nonlinear Optics
- Optical Coatings and Gratings
- nanoparticles nucleation surface interactions
- Nanowire Synthesis and Applications
Moscow Institute of Physics and Technology
2016-2025
Institute of Physics and Technology
2017-2024
Moscow Power Engineering Institute
2023
Skolkovo Institute of Science and Technology
2019
We report a comprehensive experimental study of optical and electrical properties thin polycrystalline gold films in wide range film thicknesses (from 20 to 200 nm). Our results are supported by theoretical calculations based on the measured morphology fabricated films. demonstrate that dielectric function metal is determined its structural morphology. Although fabrication process can be absolutely same for different films, strongly depend thickness. studies show imaginary part gold, which...
Large optical anisotropy observed in a broad spectral range is of paramount importance for efficient light manipulation countless devices. Although giant was recently the mid-infrared wavelength range, visible and near-infrared intervals, problem remains acute with highest reported birefringence values 0.8 BaTiS3 h-BN crystals. This inspired an intensive search among natural artificial materials. Here, we demonstrate that layered transition metal dichalcogenides (TMDCs) provide answer to...
Abstract Layered semiconductors such as transition metal dichalcogenides (TMDs) offer endless possibilities for designing modern photonic and optoelectronic components. However, their optical engineering is still a challenging task owing to multiple obstacles, including the absence of rapid, contactless, reliable method obtain dielectric function well evaluate in situ changes constants exciton binding energies. Here, we present an advanced approach based on ellipsometry measurements...
Atomically thin transition metal dichalcogenides (TMDCs) present a promising platform for numerous photonic applications due to excitonic spectral features, possibility tune their constants by external gating, doping, or light, and mechanical stability. Utilization of such materials sensing optical modulation purposes would require clever design, as itself the 2D can offer only small phase delay - consequence atomic thickness. To address this issue, we combine films semiconductors which...
Graphene-metal hybrid nanostructures have attracted considerable attention due to their potential applications in nanophotonics and optoelectronics. The output characteristics of devices based on such largely depend the properties metals. Here, we study optical, electrical structural continuous thin gold copper films grown by electron beam evaporation monolayer graphene transferred onto silicon dioxide substrates. We find that presence has a significant effect optical losses resistance, both...
Surface plasmon polaritons can give a unique opportunity to manipulate light at scale well below the diffraction limit reducing size of optical components down that nanoelectronic circuits. At same time, plasmonics is mostly based on noble metals, which are not compatible with microelectronics manufacturing technologies. This prevents plasmonic from integration both silicon photonics and microelectronics. Here, we demonstrate ultralow-loss copper waveguides fabricated in simple complementary...
Biomimetic patterning emerges as a promising antibiotic-free approach to protect medical devices from bacterial adhesion and biofilm formation. The main advantage of this lies in its simplicity scalability for industrial applications. In study, we employ it produce antibacterial coatings based on silicone materials, widely used the healthcare industry. doing so, patterned substrates with topography various flower petals (rose, chamomile, pansy, magnolia) studied relationship between...
Plasmonic biosensing has been demonstrated to be a powerful technique for quantitative determination of molecular analytes and kinetic analysis biochemical reactions. However, interfaces most plasmonic biosensors are made noble metals, such as gold silver, which not compatible with industrial production technologies. This greatly limits applications beyond pharmaceutical research. Here, we propose investigate copper-based biosensor chips fully fabricated standard complementary...
Optical constants of monolayers MoS2 and WS2 were measured by spectroscopic ellipsometry in the spectral range 365–1700 nm. Analysis spectra was carried out, taking into account excitonic nature dispersion. In considered wavelength range, excitons originate from different interband transitions. As a result, they can be described via Tauc–Lorentz oscillators, one for each exciton. The scalability universality such an approach could applied extended to other transition metal dichalcogenides.
Abstract Sub‐10 nm continuous metal films are promising candidates for flexible and transparent nanophotonics optoelectronic applications. In this article, it is demonstrated that monolayer MoS 2 a perspective adhesion layer the deposition of conductive gold with thickness only 3–4 nm. Optical properties ultrathin deposited on 2D grown by chemical vapor investigated spectroscopic ellipsometry over wide wavelength range (300–3300 nm). Results show optical losses in increase decreasing due to...
Graphene is a promising building block material for developing novel photonic and optoelectronic devices. Here, we report comprehensive experimental study of chemical-vapor deposited (CVD) monolayer graphene’s optical properties on three different substrates ultraviolet, visible, near-infrared spectral ranges (from 240 to 1000 nm). Importantly, our ellipsometric measurements are free from the assumptions additional nanometer-thick layers water or other media. This issue critical practical...
With the advance of on-chip nanophotonics, there is a high demand for high-refractive-index and low-loss materials. Currently, this technology dominated by silicon, but van der Waals (vdW) materials with refractive index can offer very advanced alternative. Still, up to now, it was not clear if optical anisotropy perpendicular layers might be hindering factor development vdW nanophotonics. Here, we studied WS2-based waveguides in terms their properties and, particularly, possible crosstalk...
Abstract Nature is abundant in material platforms with anisotropic permittivities arising from symmetry reduction that feature a variety of extraordinary optical effects. Principal axes are essential characteristics for these effects define light-matter interaction. Their orientation – an orthogonal Cartesian basis diagonalizes the permittivity tensor, often assumed stationary. Here, we show low-symmetry triclinic crystalline structure van der Waals rhenium disulfide and diselenide...
Abstract Graphene/ h BN heterostructures can be considered as one of the basic building blocks for next-generation optoelectronics mostly owing to record-high electron mobilities. However, currently, studies intrinsic optical properties graphene are limited standard substrates (SiO 2 /Si, glass, quartz) despite growing interest in graphene/ heterostructures. This attributed a challenging task determination BN’s strongly anisotropic dielectric tensor total response. In this study, we overcome...
The plasmonic sensors based on silver nanoparticles are limited in application due to their relatively fast degradation the ambient atmosphere. technology of ion-beam modification for creation monocrystalline (NPs) with stable properties will expand nanostructures. In present study, highly-stable NPs were formed basis a thin film by low-energy ion irradiation. Combined lithography, this technique allows nanoparticle ensembles variant forms. characterization showed long-term outstanding Ag...
SnS2 and SnSe2 have recently been shown to a wide range of applications in photonic optoelectronic devices. However, because incomplete knowledge about their optical characteristics, the use engineering remains challenging. Here, we addressed this problem by establishing linear nonlinear properties broad (300-3300 nm) spectral range. Coupled with first-principle calculations, our experimental study unveiled full dielectric tensor SnSe2. Furthermore, established that is promising material for...
The lattice geometry of natural materials and the structural artificial are crucial factors determining their physical properties. Most have predetermined geometries that lead to fixed characteristics. Here, demonstration a carbon nanotube network serves as an example system with controllable orientation achieving on-demand optical Such allows programming response depending on constituent nanotubes leads switching its dielectric tensor from isotropic anisotropic. Furthermore, it also for...
We propose and study a microstructure based on dielectric cuboid placed thin metal film that can act as an efficient plasmonic lens allowing the focusing of surface plasmons at subwavelength scale. Using numerical simulations plasmon polariton (SPP) field intensity distributions, we observe high-intensity spots formation nanojet (PJ) telecommunication wavelength 1530 nm. The fabricated was characterized using amplitude phase-resolved scattering-type scanning near-field optical microscopy....
Two-dimensional layers of transition-metal dichalcogenides (TMDs) have been widely studied owing to their exciting potential for applications in advanced electronic and optoelectronic devices. Typically, monolayers TMDs are produced either by mechanical exfoliation or chemical vapor deposition (CVD). While the former produces high-quality flakes with a size limited few micrometers, latter gives large-area but nonuniform surface resulting from multiple defects randomly oriented domains. The...
We report an ultra-sensitive broadband photodetector based on horizontally aligned titanium disulfide nanosheets (TNs). Firstly, TNs were synthesized using the chemical vapor transport (CVT) technique to develop photodetector, and then as-prepared deposited between interdigitated electrodes (IDEs) dielectrophoresis (DEP) technique. The photodetection performance of was analysed by illuminating device with different wavelength low-power LED lights. sensitivity as-developed has been studied...
Abstract The growing family of two-dimensional crystals has been recognized as a promising platform for investigation rich low-dimension physics and production variety devices. Of particular interest are recently reported atomic sheets non-van der Waals materials, which reshape our understanding chemical bonds enable heterostructures with novel functionality. Here, we study the structural optical properties ultrathin InGaS 3 produced by standard mechanical cleavage. Our ab initio...
The exceptional optical, electrical, and mechanical capabilities of layered transition metal carbides, nitrides, carbonitrides, called MXenes, revolutionized materials science. Among them, Ti3C2 received the most attention owing to developed synthesis processing methods, high conductivity, pronounced plasmonic response. latter, however, remains controversial with open question whether peak around 800 nm has or interband origin. To address this issue, we combine spectroscopic ellipsometry...