A5028567135- Thermal Radiation and Cooling Technologies
- Terahertz technology and applications
- Carbon Nanotubes in Composites
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Graphene research and applications
- Superconducting and THz Device Technology
- Mechanical and Optical Resonators
- Topological Materials and Phenomena
- Advanced Thermoelectric Materials and Devices
- Silicon Nanostructures and Photoluminescence
- Semiconductor Quantum Structures and Devices
- Photonic Crystals and Applications
- Nanowire Synthesis and Applications
- Graphene and Nanomaterials Applications
- Neuroscience and Neural Engineering
- Physics of Superconductivity and Magnetism
- Surface and Thin Film Phenomena
- Semiconductor materials and devices
- Polydiacetylene-based materials and applications
- Silicon and Solar Cell Technologies
- Quantum and electron transport phenomena
- Thin-Film Transistor Technologies
- Semiconductor materials and interfaces
- Nanotechnology research and applications
Moscow State Pedagogical University
2015-2024
National Research University Higher School of Economics
2013-2024
Lomonosov Moscow State University
2011-2019
Kurchatov Institute
2013-2018
Moscow Institute of Physics and Technology
2013-2018
Moscow State University of Psychology & Education
2018
Moscow State Institute of Electronics and Mathematics
2013-2015
National Research University of Electronic Technology
2013
Delft University of Technology
2013
Plasmons, collective oscillations of electron systems, can efficiently couple light and electric current, thus be used to create sub-wavelength photodetectors, radiation mixers, on-chip spectrometers. Despite considerable effort, it has proven challenging implement plasmonic devices operating at terahertz frequencies. The material capable meet this challenge is graphene as supports long-lived electrically-tunable plasmons. Here we demonstrate plasmon-assisted resonant detection by...
Graphene is considered as a promising platform for detectors of high-frequency radiation up to the terahertz (THz) range due its superior electron mobility. Previously, it has been shown that graphene field effect transistors (FETs) exhibit room temperature broadband photoresponse incoming THz radiation, thanks thermoelectric and/or plasma wave rectification. Both effects similar functional dependences on gate voltage, and therefore, was difficult disentangle these contributions in previous...
Abstract The rectification of electromagnetic waves to direct currents is a crucial process for energy harvesting, beyond-5G wireless communications, ultra-fast science, and observational astronomy. As the radiation frequency raised sub-terahertz (THz) domain, ac-to-dc conversion by conventional electronics becomes challenging requires alternative protocols. Here, we address this challenge tunnel field-effect transistors made bilayer graphene (BLG). Taking advantage BLG’s electrically...
We report on the voltage response of carbon nanotube devices to sub-terahertz (THz) radiation. The contain nanotubes (CNTs), which are over their length partially suspended and Van der Waals bonded a SiO2 substrate, causing difference in thermal contact. observe DC upon exposure 140 GHz Based observed gate power dependence, at different temperatures, we argue that signal is both photovoltaic. room temperature responsivity microwave THz range exceeds CNT based reported before.
We report on the sub-terahertz (THz) (129-450 GHz) photoresponse of devices based single layer graphene and nanoribbons with asymmetric source drain (vanadium gold) contacts. Vanadium forms a barrier at interface, while gold an Ohmic contact. find that low temperatures (77 K) detector responsivity rises increasing frequency incident sub-THz radiation. interpret this result as manifestation plasmonic effect in relatively long wavelengths. Graphene nanoribbon display similar pattern, albeit...
We consider the carrier transport and plasmonic phenomena in lateral carbon nanotube (CNT) networks forming device channel with asymmetric electrodes. One electrode is Ohmic contact to CNT network another Schottky contact. These structures can serve as detectors of terahertz (THz) radiation. develop model for response which comprise a mixture randomly oriented semiconductor CNTs (s-CNTs) quasi-metal (m-CNTs). The proposed includes concept two-dimensional plasmons relatively dense (CNT...
The rapid development of infrared spectroscopy, observational astronomy, and scanning near-field microscopy has been enabled by the emergence sensitive mid- far-infrared photodetectors. Superconducting hot-electron bolometers (HEBs), known for their exceptional signal-to-noise ratio fast photoresponse, play a crucial role in these applications. While superconducting HEBs are traditionally crafted from sputtered thin films such as NbN, potential layered van der Waals (vdW) superconductors is...
Despite the intensive development of terahertz technologies in last decade, there is still a shortage efficient room‐temperature radiation detectors. Carbon nanotubes (CNTs) are considered as very promising material possessing many features peculiar for graphene (suppression backscattering, high mobility, etc.) combined with bandgap carrier spectrum. In this paper, we investigate possibility to incorporate individual CNTs into devices that similar Schottky diodes. The latter currently used...
Demand for efficient terahertz radiation detectors resulted in intensive study of the asymmetric carbon nanostructures as a possible solution that problem. It was maintained photothermoelectric effect under certain conditions results strong response such devices to even at room temperature. In this work, we investigate different mechanisms underlying nanotube (CNT) based sub-terahertz and radiation. Our structures are formed with CNT networks instead individual CNTs so effects probed more...
Polymer composites containing nanocarbon fillers are under intensive investigation worldwide due to their remarkable electromagnetic properties distinguished not only by components as such, but the distribution and interaction of inside polymer matrix. The theory herein reveals that a particular effect connected with homogeneity composite manifests itself in terahertz range. Transmission time-domain spectroscopy was applied nanocomposites obtained co-extrusion PLA additions graphene...
Demand for efficient terahertz (THz) radiation detectors resulted in intensive study of the asymmetric carbon nanostructures as a possible solution that problem. In this work, we systematically investigate response nanodevices to sub-terahertz using different sensing elements: from dense nanotube (CNT) network individual CNT. We conclude based on CNTs both semiconducting and quasi-metallic demonstrate much stronger sub-THz region than disordered CNT networks at room temperature. also...
Light incident upon materials can induce changes in their electrical conductivity, a phenomenon referred to as photoresistance. In semiconductors, the photoresistance is negative, light-induced promotion of electrons across band gap enhances number charge carriers participating transport. superconductors, positive because destruction superconducting state, whereas normal metals it vanishing. Here we report qualitative deviation from standard behavior metallic graphene. We show that Dirac...
Despite decades of intensive studies, some aspects charge transport through carbon nanotubes (CNTs) remain poorly understood. Here, we explore the properties field-effect devices based on metallic CNTs, where density states is supposed to be constant and a field effect not anticipated. The observed current-voltage characteristics are qualitatively different from these expectations. conductance our shows significant modulation as function gate voltage. However, minimal does show temperature...
We report on a method of synthesis single-walled carbon nanotubes percolated networks silicon dioxide substrates using monodisperse Co and Ni catalyst. The catalytic nanoparticles were obtained by modified reverse micelles bis-(2-ethylhexyl) sulfosuccinate sodium in isooctane solution that provides the nanoparticle size control range 1 to 5 nm. metallic characterized transmission electron microscopy (TEM) atomic-force (AFM). Carbon synthesized chemical vapor deposition CH4/H2 composition at...
We report on detection of sub-THz radiation (129-430 GHz) using graphene based asymmetric field-effect transistor (FET) structures with different channel geometry: monolayer graphene, nanoribbons. In all devices types we observed the similar trends response radiation. The fell increasing frequency at room temperature, but increased 77 K. Our calculations show that change in trend dependence K is associated appearance plasma waves channel. Unusual properties p-n junctions are highlighted...
Abstract In this paper, we study terahertz detectors based on single quasimetallic carbon nanotubes (CNT) with asymmetric contacts and different metal pairs. We demonstrate that, depending the contact metallization of device, various detection mechanisms are manifested.