ITMO University , former Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, abbreviated as SPbNRU ITMO, is a Russian technical university located in St. Petersburg, Russia. It trains specialists in cutting-edge technologies directed at science and technical development. The university is awarded a National Research University category in 2009. It belongs to the list of top 15 Russian universities included in the government program of improving international competitiveness among leading research and educational centers.Today, ITMO University has over 13,000 students, 30 academic departments and about 1000 teaching staff. The main university campus is on Kronverkskiy Prospect, 49.University scientific interests are concentrated in the fields of information technologies, photonics and optics. Wikipedia.
Dubrovskii V.G.,Saint Petersburg State University of Information Technologies, Mechanics and Optics
Journal of Crystal Growth | Year: 2017
It is often thought that the ensembles of semiconductor nanowires are uniform in length due to the initial organization of the growth seeds such as lithographically defined droplets or holes in the substrate. However, several recent works have already demonstrated that most nanowire length distributions are broader than Poissonian. Herein, we consider theoretically the length distributions of non-interacting nanowires that grow by the material collection from the entire length of their sidewalls and with a delay of nucleation of the very first nanowire monolayer. The obtained analytic length distribution is controlled by two parameters that describe the strength of surface diffusion and the nanowire nucleation rate. We show how the distribution changes from the symmetrical Polya shape without the nucleation delay to a much broader and asymmetrical one for longer delays. In the continuum limit (for tall enough nanowires), the length distribution is given by a power law times an incomplete gamma-function. We discuss interesting scaling properties of this solution and give a recipe for analyzing and tailoring the experimental length histograms of nanowires which should work for a wide range of material systems and growth conditions. © 2017 Elsevier B.V.
Agency: European Commission | Branch: FP7 | Program: CSA | Phase: ICT-2009.1.6 | Award Amount: 883.39K | Year: 2010
The objective of the MyFIRE project is\n-\tthe multidisciplinary networking of research communities addressing both technological, socio-economical and environmental aspects of the Future Internet\n-\tthe coordination of research experience and user-driven open innovation activities establishing common concepts, roadmaps, methodologies and tools, based on standardised approaches.\nMyFIRE project develops the efficient mechanisms of test beds process to make it more effective and used. MyFIRE identifies the user communities and their needs for improving research value of the huge investments in FIRE testbeds.\nMyFIRE develops a unique and new approach addressing the optimisation, the design, the set up and the use of the experimental test facilities by increasing awareness on economic data and technical related best practices\nThe MyFIRE project will apply a methodology known and successfully used by its partners in previous support projects. The approach is to create a supportive environment, which enables key stakeholders to focus on the central question, develop consensus and collectively develop and agree on best practices for testing facilities across the scientific community.\nMyFIRE project will create an environment providing the awareness for the efficient development of experimental facilities in Europe in collaboration with international partners, especially in the BRIC countries. This will reflect the balance between the requirements for strong collaboration and the stakeholders expectations thus achieving the good experimental activities to develop the sustainable testing methodologies able to contribute to European standards development. The framework will be developing through the creation of open dialogue between the ICT networking research communities and experts from key areas of sociology, policy making, economic models and standardisation.
Agency: European Commission | Branch: FP7 | Program: CSA | Phase: ICT-2011.5.6 | Award Amount: 752.51K | Year: 2011
eGovPoliNet sets up an international community in ICT solutions for governance and policy modelling. The international community of researchers and practitioners will share and advance research and insights from practical cases around the world. To achieve this, eGovPoliNet will build on experiences accumulated by leading actors bringing together the innovative knowledge of the field. Capabilities, tools and methods brought forward by academia, ICT industry, highly specialised policy consulting firms, and policy operators and governance experts from governments will be investigated and collected in an international knowledge base. Comparative analyses and descriptions of cases, tools and scientific approaches will complement this knowledge base. Therewith, the currently existing fragmentation across disciplines will be overcome.Functions of eGovPoliNet towards community building, RTD monitoring and comparative analysis will mainly be conducted in an internet-based participatory manner, complemented with regular physical meetings attached to conferences. Community building of experts from academia, industry and public organizations, and other interested stakeholders will be supported by a community portal for knowledge sharing, collaboration, dissemination, and multidisciplinary constituency building in an open environment. eGovPoliNet expertise covers a wide range of aspects for social and professional networking and multidisciplinary constituency building along the axes of technology, participative processes, governance, policy modelling, social simulation and visualisation. Regular physical and virtual meetings with off- and online discussions and comparative studies will contribute to capacity building of the community.Through sharing of approaches and exposing them to the communitys discussions, eGovPoliNet will advance the way research, development and practice is performed worldwide in using ICT solutions for governance and policy modelling.
Agency: European Commission | Branch: FP7 | Program: CSA | Phase: ICT-2011.3.5 | Award Amount: 663.87K | Year: 2011
Optical Design and Simulation have a tremendous potential to facilitate disruptive research and product innovation. Since optical systems are key components in a broad range of modern devices, optical design plays an essential role in the technology of the XXI-st century. To support European small and medium enterprises in gaining and keeping a leading position in optics and photonics, we propose the support action called ?SME?s Training and Hands-on Practice in Optical Design and Simulation? (SMETHODS). The European consortium offering SMETHODS consists of 7 partners that are the most prominent academic institutions in optics in their countries. Through fully integrated collaborative training sessions, the consortium will provide professional assistance as well as hands-on training in a variety of design tasks on imaging optics, non-imaging optics, wave optics and diffraction optics. For each of these four training domains, 5-day training sessions will be given by several instructors from the consortium partners and by external speakers from industry. Nowadays there exists a strong demand for this kind of support action. Large companies have the resources to organize the necessary training courses internally, but SME?s lack such abilities. In the absence of systematic trainings such as SMETHODS, SME engineers often have to improve their professional abilities with less efficient autodidactic means. This training, which is unique in Europe, will fill the gap between academic courses given at universities and training activities provided by software producers that are focused on specific design software. In the first phase, SMETHODS will provide support activities to SMEs, researchers and companies during 30 months of EC financial support. During this period SMETHODS will, based on experience gained,consider how SMETHODS can continue to serve and support its users after EC funding has stopped.
Agency: European Commission | Branch: FP7 | Program: MC-ITN | Phase: FP7-PEOPLE-2013-ITN | Award Amount: 3.19M | Year: 2013
There is a severe shortage in the European photonics industry of graduates and PhDs with broad expertise in modelling and design of industrially relevant optical systems and components. This shortage is aggravated because most applied design methodologies are strongly based on previous experience of the designer. In general, these methods also have a limited efficiency because they heavily rely on trial and error. The project has therefore two objectives of equal importance: 1. The development of disruptive new optical design tools that are broadly applicable to optical design problems and that significantly increase design productivity and efficiency; 2. Advanced training through research and hands-on practice of highly skilled optical scientists given by leading European universities and European optical industries. European academic and industrial partners that are leading in the research on new optical design methodologies and in designing advanced optical systems and components for modern industrial applications will work together in ADOPSYS. We will develop for the inverse problem of optical design new strategies that reduce the amount of human trial-and-error effort significantly, and will apply them to a wide variety of industrially relevant design problems including energy efficient lighting systems, high resolution systems and machine vision, inspection and safety. The ADOPSYS partners together cover the complete modern field of optical modelling and design and its applications, a coverage which no single European group or institute can provide alone. Therefore, the ADOPSYS team is ideally prepared for high level education and training during collaborative multi-disciplinary research, research workshops in optical modelling and design, trainings in transferable skills and on-the-job training during secondments provided by the industrial partners, so that the ESR fellows will be optimally prepared for a successful career as optical scientists.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: ICT-2013.5.4 | Award Amount: 3.43M | Year: 2013
The main goal of the project is to develop a research prototype of an easy-to-use, highly visual and intuitive tool for social networks and e-participation platforms, called the Policy Compass, enabling citizens and public officials to easily create, apply, share, embed, annotate and discuss causal models, charts and graphs of historical data from trusted open data sources. The aim is to develop methods and tools that facilitate more factual, evidence-based, transparent and accountable policy evaluation and analysis.\nThe research question we want to address in the Policy Compass project is whether and how open public data, social media, e-participation platforms, fuzzy cognitive maps and argumentation technology can be integrated and applied to provide better tools on the World-Wide Web for constructing, sharing, visualising and debating progress metrics and causal models of policies.\nThe Policy Compass will make better use of Europes open public data resources and empower policy-makers and citizens (especially the younger generation) to better assess government policies in the policy analysis and monitoring phases of the policy cycle.
Poddubny A.,RAS Ioffe Physical - Technical Institute |
Iorsh I.,RAS Ioffe Physical - Technical Institute |
Belov P.,Saint Petersburg State University of Information Technologies, Mechanics and Optics |
Kivshar Y.,Australian National University
Nature Photonics | Year: 2013
Electromagnetic metamaterials, artificial media created by subwavelength structuring, are useful for engineering electromagnetic space and controlling light propagation. Such materials exhibit many unusual properties that are rarely or never observed in nature. They can be employed to realize useful functionalities in emerging metadevices based on light. Here, we review hyperbolic metamaterials-one of the most unusual classes of electromagnetic metamaterials. They display hyperbolic (or indefinite) dispersion, which originates from one of the principal components of their electric or magnetic effective tensor having the opposite sign to the other two principal components. Such anisotropic structured materials exhibit distinctive properties, including strong enhancement of spontaneous emission, diverging density of states, negative refraction and enhanced superlensing effects. © 2013 Macmillan Publishers Limited. All rights reserved.
Noskov R.E.,Saint Petersburg State University of Information Technologies, Mechanics and Optics |
Belov P.A.,Saint Petersburg State University of Information Technologies, Mechanics and Optics |
Kivshar Y.S.,Australian National University
Physical Review Letters | Year: 2012
We study modulational instability in nonlinear arrays of subwavelength metallic nanoparticles and analyze numerically nonlinear scenarios of the instability development. We demonstrate that modulational instability can lead to the formation of regular periodic or quasiperiodic modulations of the polarization. We reveal that such nonlinear nanoparticle arrays can support long-lived standing and moving oscillating nonlinear localized modes-plasmon oscillons. © 2012 American Physical Society.
Petrov M.,Saint Petersburg State University of Information Technologies, Mechanics and Optics
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2015
In this paper we report on a numerical study of plasmonic nanoparticle chains with long-range dipole-dipole interaction. We have shown that introduction of positional disorder gives a peak in the density of resonant states at the frequency of individual nanoparticle resonance. This peak is referred to as Dyson singularity in one-dimensional disordered structures and, according to our calculations, governs the spectral properties of local density of states. This provides disorder-induced Purcell enhancement that can find applications in random lasers and for surface-enhanced Raman-scattering spectroscopy. We stress that this effect relates not only to plasmonic nanoparticles but also to an arbitrary chain of nanoparticles or atoms with resonant polarizabilities. © 2015 American Physical Society.
Polotsky A.A.,Saint Petersburg State University of Information Technologies, Mechanics and Optics
Journal of Physics A: Mathematical and Theoretical | Year: 2014
The adsorption of a periodic heteropolymer onto a periodic heterogeneous surface is studied using the two-dimensional partially directed walk model of the polymer. We show how the generating function approach developed by Polotsky (2012 J. Phys A: Math. Theor. 45 425004) for the adsorption of a random copolymer onto a random surface can be extended to the case of an arbitrary periodic heteropolymer and a chemically heterogeneous surface: the main equation remains unchanged and the transition probability matrices acquire the special form of circulant matrices of a dimension equal to the corresponding sequence and surface periods, while the particular structure of periods in the polymer and on the surface is encoded in the diagonal 'interaction matrix'. The developed approach is applied to study the adsorption of a symmetric multiblock copolymer onto a symmetric multiblock two-letter surface. Analysis of the adsorption transition point dependence on polymer and surface block sizes and different sets of polymer-surface interaction parameters reveals interesting 'odd-even' and 'recognition' effects. Beyond the transition point, temperature dependences of the main conformational and thermodynamic characteristics demonstrate that adsorption can occur as a two-stage process, where binding of the polymer chain to the surface is followed by 'tuning' the chain conformations in order to maximize the number of energetically favourable contacts. The two-stage adsorption is characterized by the appearance of the maximum on the heat capacity curves. © 2014 IOP Publishing Ltd.