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Romania
Citizenship:
Ph.D. degree award:
2009
Mr.
István Ferenc
Tóth
Dr.
-
INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M
Researcher
Web of Science ResearcherID:
G-9880-2013
Personal public profile link.
Curriculum Vitae (07/07/2021)
Expertise & keywords
Network science
Atomic collisions phenomena
Ultrashort laser pulse phenomena
Pyhton
C programming
Fortran
Machine/Deep Learning
Artificial neural networks
Projects
Publications & Patents
Entrepreneurship
Reviewer section
eXtreme ultraviolet to soft-X-ray Photonic Integrated Circuits
Call name:
P 3 - SP 3.6 - Premierea participării în Orizont 2020
PN-III-P3-3.6-H2020-2020-0180
2021
-
2024
Role in this project:
Coordinating institution:
INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M
Project partners:
INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)
Affiliation:
Project website:
https://www.itim-cj.ro/xpic/
Abstract:
This project aims at the realization of a new technological platform for the development of a EUV – soft X-ray integrated photonics (X-PIC), a lab-on-chip instrument as coherent source for XUV and soft X-ray radiation. This platform X-PIC is based on high-order harmonic generation (HHG) of mid-infrared pulses in hollow-core waveguides. The miniaturized waveguides will be fabricated within the project consortium, these will be filled with noble gas which will serve as interaction medium for HHG of the laser pulses coupled in to the waveguide. In order to increase the the high-harmonic flux we will explore experimentally feasible quasi-phase-matching configurations through the controlled modulation of the waveguide's diameter and gas pressure.
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Nanostructured microfluidic analytical platform for dual SERS-electrochemical detection of emerging environmental pollutants
Call name:
EEA Grants - Proiecte Colaborative de Cercetare
RO-NO-2019-0517
2020
-
2024
Role in this project:
Coordinating institution:
INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M
Project partners:
INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO); UNIVERSITATEA DE MEDICINA SI FARMACIE "IULIU HATIEGANU" (RO); SINTEF AS (NO); NANOM MEMS SRL (RO)
Affiliation:
Project website:
https://www.itim-cj.ro/polsens/
Abstract:
Environmental contamination with pesticides causes negative impact on soil, water, and whole ecosystems. Studies evidenced links between pesticides and diseases such as Parkinson’s, prostate cancer, immune depression, allergies, and others in population groups heavily exposed to pesticides. Chronic exposure to low levels of pesticides also raises toxicity concerns. Persistent organic pollutants (POPs) are a class of very dangerous pollutants, capable of long-range transport, bio-accumulation in human and animal tissue, and bio-magnification in food chains. In such an exposed environment almost everyone has POPs in their body, including newborns or even embryos. Highly accessible analytical platforms for fast, selective and decentralized detection of dangerous chemicals are therefore of very high demand.
Within this project we propose to develop sensing platforms able to detect environmental pollutants by simultaneous optical spectroscopy and electrochemistry. A nanostructured plasmonic chip will be the core of the spectro-electrochemical sensor combining the advantages of highly specific and sensitive surface enhanced Raman spectroscopy (SERS) to the versatility, portability, and low costs of electrochemical (EC) sensing. The dual SERS-EC sensing platform will be integrated in a microfluidic system, in order to benefit from reproducible measurements due to highly defined environment, easy handling of small sample volumes, high throughput detection, and even sample preparation and mixing procedures in continuous flow. Additionally, a second dual sensing cell based on common spectrophotometer cuvettes, for ml-scale sample volumes will be developed. The proof of concept will be demonstrated on organohalide pesticide endosulfan, an emerging pollutant (EP) selected from the new POPs list of the Stockholm Convention and the JRC Watch List. Extending the adaptability of the proposed sensing platform to the detection of other environmental pollutants (e.g. lamda-cyhalotrin, thiabendazole) will be also pursued. Our research aims to provide sensing platforms by which these substances can be detected in surface waters samples and also to contribute to the scientific data regarding POPs accumulation and distribution. The design and experimental development of the SERS-electrochemical sensor aims for device portability for field (in-situ) applications, such as monitoring EPs in surface waters at critical sites (e.g. in the vicinity of a possible pollution source).
To overcome the involved scientific and technical challenges and achieve the proposed objectives, a diverse range of expertise, skills and infrastructure capacities are combined: optical simulations and experiments, nanofabrication, microsystems technologies and microfluidics, advanced characterisation tools, plasmonics, surface enhanced Raman spectroscopy, DFT calculations, electrochemistry, gas chromatography, chemometric tools. The proposed consortium is a highly trained and experienced one, relatively young, and with a very good gender balance. No ethical issues implying human or animal testing are raised by the implementation of this project.
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Laser pulse shaping and characterization: measurement, reconstruction software and adaptive optics
Call name:
ELI_03/01.10.2020
2020
-
2023
Role in this project:
Key expert
Coordinating institution:
INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M
Project partners:
INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M ()
Affiliation:
INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M ()
Project website:
Abstract:
The main purpose of this project is to develop a fast numerical instrument which performs the complete temporal-spectral reconstruction of the ultrashort laser pulses at ELI-NP facility.
Here we propose to develop a software based on artificial neural networks (ANN) for the complete reconstruction of laser pulses generated at ELI-NP. ANNs are high performance and high speed deep learning algorithms, which have been successfully used in diverse nonlinear problems and applications like image and pattern recognition, classification, identification.
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Comparative Investigation of the Cortical Circuits in Mouse, NHP and Human
Call name:
P 3 - SP 3.2 - Proiecte ERA.NET - COFUND
COFUND-FLAGERA II-CORTICITY
2018
-
2020
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BABES BOLYAI
Project partners:
UNIVERSITATEA BABES BOLYAI (RO)
Affiliation:
UNIVERSITATEA BABES BOLYAI (RO)
Project website:
http://sirius.phys.ubbcluj.ro:33380/ercsey-ravasz/Corticity
Abstract:
The proposal investigates the differences in physiology, anatomy and organization of the cortex in mouse, non-human primate (NHP) and human. This work requires tight collaborations between physiologists, anatomists and theoreticians. Our capacity to successfully integrate across these approaches is strongly supported by the numerous joint publications linking these disciplines in leading international journals by the PI’s of the consortium. Anatomy: Tract-tracing will be used to build macaque and mouse inter-areal cortical connectomes. This work will generate large data bases on inter-areal connection weights and quantitative measures of laminar distributions as well as atlases of mouse and macaque. The structural basis of hierarchy and local-global integration will be investigated with viral tracers that will be used to map the long distance and local input to the parent neurons of feedforward and feedback connections in visual cortex of mouse and macaque. Physiology: Hierarchical processing in the human, NHP and mouse brains will be compared using electrophysiological and imaging approaches and together with tract tracing, will inform embedded large-scale dynamic models of inter-areal processing in the cortex. Differences in the inter-areal matrix density lead to widely different core structures across the three species, which will be explored by weighted network structural analysis, thereby revealing the core-periphery organization, which we hypothesize could be relevant to the Global Neuronal Workspace theory of consciousness. We will manipulate consciousness with anesthetics and stimulation techniques in macaque and mouse thereby by exploring Global Neuronal Workspace function via auditory signatures of consciousness in a predictive coding paradigm. Modeling: Conditional Granger causality analysis on multi-variate time series recordings will help identify functional subnetwork motifs, in order to explore the links between structural and dynamical features in the networks across the three species. Whole-brain computational modeling will address the functional role of the underlying anatomy by studying in silico theoretical measures of integration and segregation allowing topological hierarchical analyses of effective connectivity as opposed to anatomical or functional connectivity. Altogether, the project aims to provide quantitative metrics of differences in brain organization related to changes in brain size and order, and will demonstrably underpin the relevance of investigations in the mouse and macaque for understanding the human brain.
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Continuous dynamical systems as state transition networks: a new perspective on brain signal analysis
Call name:
P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2016-1457
2018
-
2020
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BABES BOLYAI
Project partners:
UNIVERSITATEA BABES BOLYAI (RO)
Affiliation:
UNIVERSITATEA BABES BOLYAI (RO)
Project website:
http://sirius.phys.ubbcluj.ro:33380/ercsey-ravasz/STNet
Abstract:
Nonlinear dynamics and network science are two powerful research areas with many interdisciplinary applications recently including neuroscience, where understanding brain dynamics and functional connectivity is still in its infancy. Functional networks extracted from EEG and fMRI signals have been frequently studied in the last years for understanding the neurophysiological mechanisms underlying normal and disturbed brain functions, but the low sampling rate of fMRI and the small number of electrodes in the case of EEG limits the power of this approach.
In this project we aim to use state transition networks (STN) defined on continuous dynamical systems to combine the network science approach with nonlinear dynamics theory in order to study brain signals. This will lay the foundations of a method that will unleash the power of the network approach also for low dimensional data sets or even for a single time series (via time delay embedding).
First, we aim to develop the methodology of extracting STNs from continuous dynamics. Studying well-known dynamical systems (Henon map, Lorenz system etc.) we want to understand how dynamical properties, such as chaotic behavior, are reflected in its structure.
Second, we will apply this methodology to extract STNs from sleep EEG brain signals recorded in different clinical conditions: healthy control group, pre-manifest and manifest Huntington’s disease (a genetically inherited progressive neurodegenerative disease). Disrupted sleep being one of the earliest markers of neurodegeneration, comparing different clinical groups we want to identify potential biomarkers/predictors for cognitive decline.
Our project will introduce new concepts and methods in continuous dynamics theory, will open a new direction in neuronal signal processing and can have a direct impact in clinical neuroscience, where biomarkers distinguishing normal and disturbed brain functions play a crucial role.
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Developing an optimal scientometric indicator
Call name:
P 2 - SP 2.1 - Transfer de cunoaștere la agentul economic „Bridge Grant”
PN-III-P2-2.1-BG-2016-0252
2016
-
2018
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BABES BOLYAI
Project partners:
UNIVERSITATEA BABES BOLYAI (RO); EPISTEMIO SYSTEMS S.R.L. (RO)
Affiliation:
UNIVERSITATEA BABES BOLYAI (RO)
Project website:
http://atom.ubbcluj.ro/iota
Abstract:
Improving the quality and efficiency of scientific activity assessment is increasingly important in today's knowledge based society. The global scientific information market exceeds $60 million annually and is currently dominated by Elsevier and Thomson Reuters which, having a dominant position, are not motivated to innovate. In its endeavor to capture a significant slice of this market, the business organization (Epistemio) aims to improve radically, in partnership with the university, the technologies employed for the evaluation of scientific publications. Epistemio has developed a proprietary database with information on over 70 million publications and provides a range of online services, used worldwide by thousands of scientists, at www.epistemio.com. The main objective of the project is the development of a new scientometric indicator, iota, with the following properties: 1) it is associated to individual publications; 2) aggregates citations by weighting them with the iota of citing publications; 3) is normalized to the scientific field and to time; 4) can embed quantitative assessments delivered by peer-review; 5) provides information about the indicator’s precision. For this purpose, the research group will develop a model over citation networks, which is optimal in terms of evaluative properties and computational cost. The model will be analyzed theoretically, tested on real networks and compared with existing indicators. The business organization will benefit from the several years expertise of the research group in applied network science and also from its computational infrastructure.
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Interactions of atoms and molecules with laser pulses and charged particles
Call name:
Exploratory Research Projects - PCE-2011 call
PN-II-ID-PCE-2011-3-0192
2011
-
2016
Role in this project:
Coordinating institution:
Universitatea Babes-Bolyai
Project partners:
Universitatea Babes-Bolyai (RO)
Affiliation:
Universitatea Babes-Bolyai (RO)
Project website:
http://atom.ubbcluj.ro/laser
Abstract:
The spectacular development of experimental techniques in the study of interactions of strong laser pulses and charged projectiles with matter demand for theoretical description and interpretation. This scientific field is also very promising for applications from medicine to thermonuclear plasma, from chemical reaction control to astrophysics. The present project proposes the theoretical study of some newly observed phenomena, their interpretation and in some cases prediction of new features, possibilities.
The proposed objectives are:
1. Theoretical study of the interactions of atoms with strong short laser pulses.
a. Investigation of the intra-pulse interference effects in the photoionization spectrum of atoms.
b. Investigation of the Coulomb potential’s influence on the multiphoton ionization spectrum.
c. Electronic wave-packet measurements/manipulations using the attosecond streaking and pump-probe techniques.
2. Study of interference effects in the ionization of diatomic molecules by charged particle and photon impact
a. Photoionization of diatomic molecules – investigation of coherence and decoherence.
b. Interaction of diatomic molecules with strong short laser pulses.
c. Ionization of diatomic molecules by charged particles.
3. Ionization of molecules by positron and electron impact
a. Calculation of differential cross sections for some small molecules.
b. Calculation of total ionization cross sections by positron and electron impact. Positronium scattering.
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Ionization of NH3 and CH4 molecules by electron and positron impact. Kinematically complete processes.
Call name:
GTC_34032/2013
2013
-
2014
Role in this project:
Project coordinator
Coordinating institution:
UNIVERSITATEA BABES BOLYAI
Project partners:
UNIVERSITATEA BABES BOLYAI ()
Affiliation:
UNIVERSITATEA BABES BOLYAI ()
Project website:
Abstract:
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Interaction of atomic systems with charged particles
Call name:
POSDRU/89/1.5/S/60189
2010
-
2012
Role in this project:
Project coordinator
Coordinating institution:
UNIVERSITATEA BABES BOLYAI
Project partners:
UNIVERSITATEA BABES BOLYAI ()
Affiliation:
UNIVERSITATEA BABES BOLYAI ()
Project website:
Abstract:
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Electronic transitions in atoms and molecules in interaction with charged particles and laser fields
Call name:
CNCSIS (PNII – IDEI), ID_539
2009
-
2010
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BABES BOLYAI
Project partners:
UNIVERSITATEA BABES BOLYAI ()
Affiliation:
UNIVERSITATEA BABES BOLYAI ()
Project website:
Abstract:
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Ionization of molecules by ultrashort laser pulses; Interference effects
Call name:
Romanian Academy 35/3.09.2007
2007
-
2009
Role in this project:
Key expert
Coordinating institution:
UNIVERSITATEA BABES BOLYAI
Project partners:
UNIVERSITATEA BABES BOLYAI ()
Affiliation:
UNIVERSITATEA BABES BOLYAI ()
Project website:
Abstract:
Read more
FILE DESCRIPTION
DOCUMENT
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects
[T: 0.9038, O: 277]