Personal Information
C. Ravariu

Department of Electronic Devices, Circuits and Architectures DCAE, Faculty of Electronics Telecommunications and Information Technology ETTI, "Politehnica" University of Bucharest, Bucharest, Europe, Romania

C. Ravariu
Educations
From 1988 to 1993, Bachelor and master engineer , Romania
From 1994 to 2001, Doctorate , Romania
From 2003 to 2003, Specialty stage , Switzerland
From 2006 to 2006, Specialty stage in Bioengineering , Greece
From 2010 to 2013, PostDoc , Romania - France
Work Experiences
From 1993 to 1999, Scientific Researcher , National Institute of Research and Development for Microtechnology, Romania
From 1999 to present, Assist. Prof. - Professor , Politehnica Univesity of Bucharest, Faculty of Electronics Telecommunications and Information Technology, Bucharest Romania
Projects
From 2008 to 2011, BioFET transistors , Dr. Ravariu was Coordinator of the project. Details: fabrication process of some Filed Effect Transistors with enzyme as receptor layer
From 2008 to 2011, Electro-Cell , Dr. Ravariu was Coordinator of the project. Details: development of new electrical equipments for bio-signal recording at different kind of cell/tissue/organ
From 2006 to 2007, ENIAC RTN-NANOEL, Technology Network for Romania integration in the NANOELectronics european platform , Dr. Ravariu was Participant of the project. Details: development of new nano-electronic devices
From 2000 to 2001, Modelling of the conduction thru SOI-MOSFETs , Dr. Ravariu was Coordinator of the project. Details: different technologies and doping profiles were taken into account
From 2002 to 2004, MOS with mobile gate for circuits of telecommunications , Dr. Ravariu was Coordinator of the project. Details: modeling and technologies implementation
From 2006 to 2007, Characterization systems for nanostructured SOI materials , Dr. Ravariu was Coordinator of the project. Details: in situ characterizations; pseudo-MOS transistor technique;
From 2010 to 2013, POSDRU/89/1.5/S/62557 Program, individual them: Generalized SOI structures for nano- and bio-devices , Dr. Ravariu was responsible of this them. Details: Others materials than Si was studied, as Diamond, Organic semiconductor, enzymes, TiO2 nanotubes and so on.
From 2002 to 2003, International Contract, code ESSOS, partners from Switzerland and Romania , Dr. Ravariu was Participant of the project. Details: Low power electrostatic silicon on sapphire RF switches for telecom applications
Speciality
Electronic Devices and transducers for biosensors
Nanodevices
Bioelectronics: cell modelling, biosensors, BioFETs, Biosignal processing
Spice models for Active Electronic Devices
Devices and circuits for Electrophysiology
Book
Cristian Ravariu. Biodevices: from nanostructures to medical applications, Politehnica Press, ISBN 978-606-515-071-3, Bucharest, 2010, p. 1-232, (in Romanian).
Cristian Ravariu. Electronic devices, Printech Press, ISBN 973-718-133-6, Bucharest, 2004, p. 1-326, (in Romanian). One chapter is devoted to biodevices.
Florin Babarada, Cristian Ravariu. Technologies for micro- and bio-sensors, Printech Press, ISBN 973-718-119-0, Bucharest, 2004, p. 1-258, (in Romanian).
Chapter. Cristian Ravariu. Studies and electrical characterization of sub-400nm SOI structures, Chapter 22-th, pp. 173-189, in book: Advances in Engineering: from theory to application, Politehnica Press Publishing, Bucharest, Romania, ISBN 978-606-515-381-3, total 492 pp, Editors Ecaterina Andronescu and Corneliu Burileanu, published in Oct. 2012.
Chapter. Cristian Ravariu. Contributions to novel methods in electrophysiology aided by electronics devices and circuits, Chapter 6, pp. 123-140, in Book: Applied Biomedical Engineering, ISBN 978-953-307-256-2, 500 pages, InTech publisher Austria-Croatia, Editors: Gaetano D. Gargiulo, Alistair McEwan; August 2011.
Chapter. Cristian Ravariu. Learning in Bioelectronics, Chapter 25, pp. 381-396, in Book: Advanced Learning, ISBN 978-953-307-010-0, InTech publisher Austria-Croatia, Editors: Raquel Hijon-Neira, Aleksandar Lazinica; Nov 2009.
C. Ravariu, D. Cozma. Dispositifs et circuits electroniques pour applications pratiques, Politehnica Press, Romania, Bucharest, 2007, pp. 1-108, ISBN 978-973-7838-34-6, in Francaise.
Chapter. Alexandru Topor, Cristian Ravariu, Florin Babarada, Aurora Salageanu, Iuliana Caras, Bogdan Patrichi, Mobile Electronic Device And Integrated Software For Citokines Fluorescence Detection, Chapter in Book “Monitoring techniques used in life sciences” - published by LAMBERT Academic Publishing, trademark of OmniScriptum GmbH & Co. KG, Germany, in press 2015.
Journal Articles
A. Bondarciuc, C. Ravariu, V. Bondarciuc, G. Alecu. Non-polluting medical technology for environment and patient used in inflammatory diseases monitoring, Environmental Engineering and Management Journal, ISSN: 1582-9596, 2015, vol. 14, no. 4, pp. 763-768.
C. Ravariu. Compact NOI Nano-Device Simulation. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 22, issue 8, Aug 2014, Page(s):1841 - 1844 , ISSN :1063-8210 , DOI:10.1109/TVLSI.2013.2278474
Cristian Ravariu, Ala Bondarciuc. The sensitivity in the IR spectrum of the intact and pathological tissues by laser bio-photometry, Laser in Medical Science, Springer Journal, March 2014, Volume 29, Issue 2, pp 581-588. DOI 10.1007/s10103-013-1358-6, ISSN: 0268-8921.
Cristian Ravariu. Semiconductor Materials Optimization for A TFET Device with Nothing Region On Insulator, IEEE Transaction on Semiconductor Manufacturing Journal, vol. 26, issue 3, pp. 406-413, Aug. 2013, DOI: 10.1109/TSM.2013.2258411
C. Ravariu. The residual doping concentration estimation in a SIMOX film using current measurements, IET Science Measurement & Technology Journal, vol. 7, issue 1, Jan 2013, pp. 1-6, ISSN 1751-8822, DOI:10.1049/iet-smt.2012.0052.
Florin Babarada, Cristian Ravariu, Integrated Environment for Active and Collaborative e-Learning in Micro- and Bio- Electronics, Wulfenia Journal, ISSN: 1561-882X, Impact Factor: 0.267, Vol 20, No. 9, Sep 2013, pp. 51-68.
C. Ravariu, E. Manea, C. Parvulescu, F. Babarada, A. Popescu. Titanium dioxide nanotubes on silicon wafer designated for GOX enzymes immobilization, Digest Journal of Nanomaterials and Biostructures, vol. 6, no 2, pp. 703 - 707, April - June 2011, ISSN 1842 - 3582, Impact factor=1.092.
C. Ravariu, A. Rusu. Arguments for the NOI nanotransistor affiliation to the FETs family, ROMJIST Journal of the Romanian Academy Section for Information Science and Technology, vol. 14, nr. 3, pp. 203–211, 2011, ISSN:1453-8245, Impact factor=0.154
C. Ravariu, F. Babarada. Modeling and simulation of special shaped SOI materials for the nanodevices implementation, Journal of Nanomaterials, vol. 2011, Article ID 792759, 11 pages, July 2011, ISSN: 1687-4110, IF=1.547, DOI: 10.1155/2011/792759
C. Ravariu. The implementation methodology of the real effects in a NOI nanostructure aided by simulation and modelling, Elsevier Journal of Simulation Modeling Practice and Theory, vol. 18, Issue 9, pp. 1274-1285, Oct. 2010, ISSN: 1569-190X, IF=1.18.
C. Ravariu, L.G. Alecu, A. Bondarciuc, F. Babarada. Advanced SOI semiconductor structures for micro-dose biological samples handling, Journal of Optoelectronics and Advanced Materials - Rapid Communications JOAM-RC, vol. 4, nr. 9, pp. 1375-1378, Sept. 2010, IF=0.303, ISSN: 1842-6573.
C. Ravariu, A. Bondarciuc, F. Ravariu, E. Manea, C. Podaru. A first experimental model for a characterisation biodevice with epinephrine solution, ROMJIST Journal of the Romanian Academy Section for Information Science and Technology, vol. 12, Issue: 4, pp. 504-513, 2009, ISSN:1453-8245.
C. Ravariu, F. Ravariu, F. Babarada. Electrical characterization of the epinephrine solution on natural diamond with possible biomedical applications, Digest Journal of Nanomaterials and Biostructures, vol. 2, nr.1, pp.155-162, March, 2007, ISSN 1842 - 3582.
C. Ravariu, A. Rusu, F. Ravariu. Interface electric charge modeling and characterization with distribution generator strings in thin SOI films, Microelectronics Elsevier Journal, vol. 37, nr. 3, pp. 943-947, 2006, ISSN: 0026-2692, IF=0.912
C. Ravariu, A. Rusu, F. Udrea, F. Ravariu. Simulation results of some Diamond On Insulator nano-MISFETs, Diamond and Related Materials Elsevier Journal, vol.15, nr.2, pp.777-782, 2006, ISSN: 0925-9635, IF=1.709,
C. Ravariu, G. Alecu, F. Ravariu. The experimental estimation of the illumination generation rate in a nano-SOI film, Journal of Optoelectronics and Advanced Materials JOAM, vol. 8, nr. 2, pp.593-596, April. 2006, ISSN: 1454-4164, IF=0.457
C. Ravariu, A. Rusu, F. Ravariu, D. Dobrescu, L. Dobrescu. From PSI-MOSFET with silicon on oxide to PSI-MOSFET with silicon carbide on nitride, Diamond and Related Materials Elsevier Journal, vol. 11, Issues 3-6, pp. 1268-1271, Mar.-Jun. 2002, ISSN: 0925-9635, IF=1.9.
Cristian Ravariu, Elena Manea, Alina Popescu, Cecilia Podaru, Catalin Parvulescu, Micro-Technological Steps During the Fabrication of an AcHE Biosensor Designated to the Environment Monitoring, American Journal of Bioscience and Bioengineering, vol. 3, issue 3-1, June 2015, pp. 1-6.
Cristian Ravariu, Daniela Dragomirescu, Different Work Regimes of an Organic Thin Film Transistor OTFT and Possible Applications in Bioelectronics, American Journal of Bioscience and Bioengineering, vol. 3, issue 3-1, June 2015, pp. 7-13.
Florin Babarada, Cristian Ravariu, Dan Prelipceanu, Bogdan Patrichi, Daniela Manuc, Aurora Salageanu, Iuliana Caras, Electronic Tool Interferences with Electrophysiology for the Psychiatric Disorders Monitoring, American Journal of Bioscience and Bioengineering, vol. 3, issue 3-1, June 2015, pp. 14-21, Pub. Date: Apr. 3, 2015.
C. Ravariu, A. Bondarciuc, V. Nahaba, V. Bondarciuc, C. I. Tirgoviste, F. Babarada, O. Dumitrache. The laser biophotometry medical applications for the diabetes foot monitoring, Elsevier Journal of Photodyagnosis and Photodynamic Therapy, vol. 7, suppl. 1, pp. 522-523, July 2010, ISSN 1572-1000, IF=1.263.
C. Ravariu, F. Ravariu. Some optimization of Bio-FETs with electrical charged bioliquid, Romanian Reports in Physics, Vol.58, No.2, pag.189-194, 2006, Publishing House of the Romanian Academy, ISSN 1221-1451, IF=0.3.
Conference Papers
C. Ravariu, F. Babarada, E. Manea, C. Parvulescu, I. Rusu, I. Enache, M. Cristea, J. Arhip. Manufacturing of Capacitive Electrodes on Si-substrate for Electrophysiological Applications, 37-th IEEE International Annual Conference of Semiconductors, 13-15 Oct, 2014, Sinaia, Romania, pp. 151-154.
Cristian Ravariu. Simulations of the nothing on insulator NOI nano-transistor implemented in n-type diamond, 35-th Edition of IEEE International Semiconductor Conference, Location: Sinaia, Romania, Oct. 2012, pp. 453-456, ISSN 1545-827X, ISBN 978-1-4673-0736-9
C. Ravariu, A. Rusu. The non-linear behavior of the Nothing On Insulator NOI nanotransistor from theoretical and numerical studies, 34-th IEEE CAS, Annual Conference of Semiconductors, 2011, Sinaia, Romania, pp. 357-360, DOI 10.1109/SMICND.2011.6095816, ISSN 1545-827X, ISBN 978-1-61284-173-1,
C. Ravariu, F. Ravariu. Simulations of some electro-mechanical phenomenon at nano-cellular level, 32nd IEEE International Semiconductor Conference, Location: Sinaia, Romania, Oct. 12-14. 2009, pp. 127-130, vol. I, ISBN 978-1-4244-4413-7, ISSN: 1545-827X
C. Ravariu, C. Podaru, E. Manea. Design and technological characterization aspects of a gluco-detector BioFET, 32nd IEEE International Semiconductor Conference, Location: Sinaia, Romania, Oct. 12-14. 2009, pp. 281-284, vol. I, ISBN 978-1-4244-4413-7, ISSN: 1545-827X
C. Ravariu, F. Babarada. The simulation of a biosensor in MEMS configuration, 21-th European Modeling and Simulation Sympozium I3M-EMSS, Sep. 23-25. 2009, Puerto Cruz, Tenerife, vol. II, pp. 125-128, in Proceedings Editors R. M. Aguilar, C. Frydman, F. Longo, K. Mekouar, ISBN 978-84-692-5414-1, index ISI, Web of Science Categories:
C. Ravariu, C. Ionescu-Tirgoviste, F. Ravariu. Glucose biofuels properties in the bloodstream in conjunction with the beta cell electro-physiology, Proceedings of 2-nd Edition IEEE - ICCEP International Conference on Clean Electrical Power Conference, Jun. 09-11. 2009, Capri, Italy, pp. 124-127, ISBN 978-1-4244-2544-0, DOI: 10.1109/ICCEP.2009.5212071, index ISI, Web of Science
C. Ravariu, R. Botan. The Electrical Transport Mechanisms Investigation In Adrenergic Synapses Using A Parallel BioOI Biodevice, 19th IEEE International EURASIP Conference of Biosignal, Location: Brno, Czech, under IEEE-EMBS Engineering in Medicine and Biology Society, Jun. 29-30. 2008, pp.63.115-118, Brno, Czech Republic, Edited by Vutium Press, ISSN 1211-412X, ISBN 978-80-214-3612-1.
C. Ravariu, C. Podaru, E. Manea, A. Bondarciuc, D. Vizireanu, A. Rusu, F. Ravariu. Measurements of the Electrical Characteristics in DC and AC Regime for an Epinephrine BOI device, 31st IEEE International Semiconductor Conference, Location: Sinaia, Romania, Oct. 13-15. 2008, pp. 169-172, vol. 1, ISBN 978-1-4244-2004-9, ISSN 1545-827X
Alex. Rusu, N. Golescu, C. Ravariu. Manufacturing and tests of a mobile ECG platform, 31st IEEE International Semiconductor Conference, Location: Sinaia, Romania, Oct. 13-15. 2008, pp. 433-436, vol. 2, ISBN 978-1-4244-2004-9, ISSN 1545-827X
C. Ravariu, A. Rusu, A. Bondarciuc, F. Ravariu, T. Niculiu, F. Babarada, V. Bondarciuc. Modeling and simulation of a nanostructure for a single electron technology implementation, 20th European Modeling and Simulation Symposium EMSS, Location: Amantea, Italy, Sep. 17-19. 2008, pp. 312-315, ISBN 978-88-903724-0-7.
C. Ravariu. The Feed-Back from a Biodevices and Cellular Nano-Electronics Course Learned in an Electrical Engineering Faculty, 8th IEEE International Conference on Advanced Learning Technologies Location: Santander, Spain, Jul. 01-05. 2008, pp.882-884
F. Ravariu, C. Ravariu, O. Nedelcu, F. Babarada, E. Manea, C. Podaru. Mechanical Performance of an Integrate Micropump. Application in Electrophoresiys, 29th IEEE International Semiconductor Conference (CAS 2006), Location: Sinaia, Date: SEP 27-29, 2006, Romania, in Proceedings pp. 193-196, ISBN 1-4244-0109-7
C. Ravariu. A NOI – nanotransistor, 28th IEEE International Semiconductor Conference (CAS 2005), Location: Sinaia, Oct.03-05. 2005, Romania, in Proceedings, pp. 65-68, vol. 1, ISBN 0-7803-9214-0.
C. Ravariu, A. Rusu, O. Nedelcu, F. Ravariu, F. Babarada, L. Dobrescu. A MEMS dedicated to the bio-components detection, inspired from the SON architecture, 28th IEEE International Semiconductor Conference, CAS2005, Location: Sinaia, Oct.03-05. 2005, Romania, in Proceedings vol. 1, pp. 219-222, ISBN 0-7803-9214-0.
F. Ravariu, C. Podaru, O. Nedelcu, C. Ravariu, E. Manea. A Silicon nanoporous membrane used for drug delivery, 27th IEEE International Semiconductor Conference (CAS) Location: Sinaia, Romania, Oct. 04-06 2004, in Proceedings, pp.101-104, ISBN 0-7803-8499-7
C. Ravariu, F. Ravariu, A. Rusu. Analysis of the non – linear responses of some biosensors, IEEE, Int. Conf. Proceedings, Sinaia, Romania, CAS'03, pp.193-196, vol. 1, 2003, ISBN 0-7803-7821-0
F. Ravariu, C. Ravariu, O. Nedelcu. The modeling of a sensor for the human blood pressure, 25th IEEE International Semiconductor Conference, Location: Sinaia, Romania, Oct. 08-12 2002, pp. 67-70, vol.1, ISBN: 0-7803-7440-1
C. Ravariu, A. Rusu, D. Dobrescu, L. Dobrescu, F. Ravariu, C. Codreanu, M. Avram. A Mathematical Model for Threshold Voltage of a Partially and Fully Depleted MOS/SOI Structure with a Gaussian Distribution in the Film, 3-rd Edition IEEE International Conference on Modeling and Simulation of Microsystems, Location: San Diego, CA, Mar. 27-29. 2000, Proceedings with Editors Laudon M.; Romanowicz B., pp. 404-407, 2000, ISBN: 0-9666135-7-0.
C. Ravariu, D. Ursutiu, F. Babarada, J. Arhip, S. S. Arama, G. Radulian, C. Samoila. Remote Measurements of the Gastric Electrical Signals - Between Theory and Practice, 11-th Internat. IEEE Conference on Remote Engineering and Virtual Instrumentation, Porto, Portugal, 26-28 Feb 2014, contrib. no. 97, Proceedings pp. 281-284, 978-1-4799-2025-9/14/$31.00 ©2014 IEEE, indexed IEEE.
Cristian Ravariu. The cellular membrane simulation using dual Semiconductor-Insulator - Semiconductor structures, 9-th IASTED International Conference of Biomedical Engineering BioMED 2012, Innsbruck, Austria, ID 764-100, pp. 358-361, ISBN 978-0-88986-909-7, DOI: 10.2316/P.201 .764-100.
C. Ravariu, F. Babarada, E. Manea, A. Popescu. The electrodes geometry design and global simulations for an ENFET gluco-detector, paper ID 723-084, 8-th IASTED International Conference of Biomedical Engineering BioMED, 2011, Innsbruck, Austria, pp. 429-432, ISBN 978-0-88986-866-3, DOI: 10.2316/P.2011.723-084.
F. Babarada, C. Ravariu, J. Arhip. Electrophysiological Data Processing Using a Dynamic Range Compressor Coupled to a Ten Bits A/D Convertion Port, in Proceedings I-st IEEE International Conference on Data Compression, Communications and Processing (CCP), 21-24 June 2011, Palinuro, Italy, pp. 257-262, DOI 10.1109/CCP.2011.24
C. Ravariu, F. Babarada. The E-Healthcare Point of Diagnosis Implementation as a First Instance, in Proceedings I-st IEEE International Conference on Data Compression, Communications and Processing (CCP), 21-24 June 2011, Palinuro, Italy, pp. 121-124, DOI 10.1109/CCP.2011.23
F. Babarada, C. Ravariu, J. Arhip. Simulation, Optimisation and Design a Platform for in-vivo Electrophysiological Signals Processing, Proceedings of the 23rd European Modeling & Simulation Symposium EMSS, 2011, Rome, Italy, pp. 380-383, ISBN 978-88-903724-4-5
C. Ravariu, A. Popescu, C. Podaru, E. Manea and F. Babarada. The Nanopous Al2O3 Material Used for the Enzyme Entrapping in a Glucose Biosensor, XII Mediterranean Conference on Medical and Biological Engineering and Computing MEDICON 2010, Chalkidiki, Greece, Proceedings, vol. 29 , pp. 459-462, ISBN 978-3-642-13038-0, Pallikarakis, Nicolas; Bamidis, Panagiotis D. (Eds.), ISBN 978-3-642-13039-7
C. Ravariu, A. Bondarciuc, F. Ravariu. From Experimental Investigations with Laser Bio-Photometry to Statistical Models Applied for the Normal and Pathological Tissue, Proceedings of World Congress on Medical Physics and Biomedical Engineering, Vol. 25/VII-2507, Munich, Germany, pp. 34-37, 2009, Editors: Olaf Dössel and Wolfgang C. Schlegel, ISSN 1680-0737, ISBN 978-3-642-03897-6, DOI 10.1007/978-3-642-03885-3, index Springer
C. Ravariu, A. Bondarciuc, W. Kappel, V. Bondarciuc, F. Ravariu. An Identification Function in Clinical Diagnosis Based on the Experimental Measurements with Laser Bio-photometry, IEEE-IFAC 15-th International Symposium on System Identification SYSID Proceedings, S. Malo, France, 2009, pp. 1006-1009, DOI 10.3182/20090706-3-FR-2004.00167
C. Ravariu, A. Sevcenco, M. Auer, C. Ionescu-Tirgoviste, F. Babarada. The BioNEC Platform, International Conf. on Internet Computer Learning ICL 2008, Villach, Austria, pp. Pa-4C/ 1-4, ISBN: 978-3-89958-353-3
Honors and Awards
Tudor Tanasescu Award from the Romanian Academy, for the book: Electronics biodevices: from nanostructures to medical applications, Politehnica Press Publishing, Bucharest, Romania, 232 pages, ISBN 978-606-515-071-3, 2010; award in Dec 2011.
4 Best Paper awards 2000 - 2013
Invited Talks
Cristian Ravariu. SOI devices - new challenges for Nano-Electronics, Workshop on Circuits, Systems and Information Technology WCSIT, Invited presentation, Iasi, IDEO Bussines Center, 3-4 July 2014
C. Ravariu, M. Gherasim, A. Glavan, B. Robu, M. Badea, M. Chitu, Integrated biosensors using active electronic devices, International Conference - New Trends on Sensing- Monitoring-Telediagnosis for Life Sciences- NT-SMT-LS, organised by Transilvania University of Brasov, Romania, during July 24-26, 2014.
A. Bondarciuc, C. Ravariu, V. Bondarciuc. The Infrared emission by laser bio-photometry versus the tissue hydration degree, 9th International Fröhlich’s Symposium, Electrodynamic activity of living cells, Including Microtubule Coherent Modes and Cancer Cell Physics, Praga, Cehia, 2010
ADDRESS
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Tel: (001)347-983-5186