RESEARCH TEAM
   

Research Team: the research team has multidisciplinary expertise in physics and electronics of microsystems and is composed of  10 senior researchers (10 of them with PhD in physics, electronics, microwave), 2 early stage researcher (PhD in electronics).

   

Dr. Alexandru Muller, senior researcher
Dr. Mircea Dragoman, senior researcher
Dr. Dan Neculoiu, senior researcher
Dr. Sergiu Iordanescu, senior researcher

Dr Valentin Buiculescu, senior researcher
Dr. Dan Vasilache senior researcher
Eng. Cristina Buiculescu, senior researcher
Phys. Petrini Ioana, senior researcher

Dr. Alina Cismaru, researcher
Dr Alexandra Stefanescu, researcher
Dr. Alina Cristina Bunea, researcher
Dr. Martino Aldrigo, researcher
Dr. Gina Adam, researcher
PhD. stud. Ioana Geangu, researcher
   
Laboratory Head — Dr. Alexandru Muller (alexandru.muller@imt.ro)

extended CV and publication list available here

He obtained M.Sc.in physics (1972) and PhD in physics at Bucharest University in 1990;

In the early years of his career he worked on the design manufacturing and characterization of silicon microwave diodes (varactor, pin, multiplier SRD’s) and GaAs Schottky diodes, developing new innovative technological processes and high performance devices used in various industrial applications.

His PhD thesis was focused on a new physical model describing the switching behavior of narrow base pin diodes. This model was used in the optimization of the efficiency of microwave step recovery multiplier diodes. Results have been partially published in Solid State Electronics vol 32, pp. 593-601, 1989 (A Muller and S Voinigescu "Heavy doping ftfects and stored charge characteristics in narrow base PIN diodes").

Competences
- Silicon, GaAs and GaN micromachining and nanoprocessing, manufacturing of RF MEMS components and circuits, manufacuring of microwave passive membrane supported circuits, micromachined inductors, filters and antennae, monolithically as well as hybrid integrated receiver modules.

- In the last years Dr Muller was involved in developing acoustic devices (SAWs and FBARs) based on micromachining and nanoprocessing of wide bandgap semiconductors (GaN, AlN). The performances of the SAW and FBAR structures on GaN represent the actual state of the art in the topics. Results were published in IEEE El Dev. Lett. in 2009 and 2010. Dr Muller is now involved in developing of temperature and humidity sensors based on GaN GHz SAW and FBAR structures.

Publications
Dr Muller has published a few tens of papers in high ranked ISI journals like IEEE Electron Dev. Letters, Applied Optics, Thin Film Solids, Appl Phys Lett, Journ. of Micromech. and Microengng, IEEE Trans on MTT, Superlatice & Microstructures etc.. In most of them he was the first author. Dr Muller has more 100 papers in conference proceedings, and has written chapters in books published in Spriger, Francis &Taylor," Editura Academiei" printing houses.

Dr. Muller is reviewer at Elsevier, IoP and IEEE journals.

Dr. Muller is member of PhD Jury in “Politehnica” Univ. Bucharest, Univ. Bucharest and Univ. Paul Sabatier/ LAAS Toulouse.

Long term stages abroad:
- a six month stage in 1991/1992 at IMEC Leven;
- a six month stage at LAAS CNRSToulouse at Director de recherce (2003);

European Projects coordination and participation
- coordinator of the the European FP4 „MEMSWAVE” project (1998-2001), one of the first RF-MEMS projects financed by the EC. The project was nominated in 2002 between the 10 finalists for the Descartes prize of the EC. This was the first and for a long time the only EC project in the IST topics coordinated by an Eastern European country.

- coordinator of the FP7 REGPOT- MIMOMEMS (2008 – 2011) “European Centre of Excellence in Microwave, Millimetre Wave and Optical Devices, based on Micro-Electro-Mechanical Systems for Advanced Communication Systems and Sensors”.

Dr A Muller was and is is the leader of the Romanian team in:
- FP6 NoE AMICOM, 2004-2007, coordinator LAAS Toulouse.
- FP7 Integrated Project NANOTEC, 2011-2014, coordinator Thales TRT.
- FP7 Integrated Project SMARTPOWER, 2011-1014, coordinator Thales TRT.
- FP7 related projects ( ENIAC SE2A (coordinator NXP Semiconductor Netherlands BV), MERCURE (coordinator Thales Research and Technology, France)).

 
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Dr. Mircea Dragoman (mircea.dragoman@imt.ro)

Mircea Dragoman was born in Bucharest in 1955. He graduated the Polytechnical Institute in Bucharest, Electronic Faculty, in 1980. He received the doctoral degree in electronics in 1991. In the period 1980-1984 he has worked as a design engineer in the factory for Automatic Elements (FEA) and then  in the period 1984-1996 he has worked in the Research Institute for Electron Devices ( ICCE)  Bucharest in the microwave laboratory  where he designed and a wide range microwave devices.

Mircea Dragoman is a senior researcher I at the National Research Institute in Microtechnologies, since 1996.. He has realized the first carbon nanotube and graphene circuits in Romania, some of them being the first devices worldwide. He is managing now few Romanian and UE FP7 projects dedicated to nanoelectronics.

In the period 1992-1994 he was the recipient of the Humbold Fellowship award and he has followed postdoctoral studies at Duisburg University, Germany. He was invited professor at : CNR- Istituto di Electtronica dello Stato Solido-Roma (1996), Univ. Saint-Etienne –Franta (1997), Univ. Mannheim (1998-1999, 2001-2002), Univ. Frankfurt  (2003), Univ. Darmstadt (2004); in the period 2005-2006. He was invited professor at CNRS LAAS in the period 2005-2006 and  2008-2010.He had more than 40 invited papers in UE and and he taught 3  univesity courses in France (Nanoelectronics, 2005-2006), in Germany (Nonlinear Phenomena,1992), and Romania (Advanced technological processes, 2010-2012).

He has published 205 scientific papers from which 102 are in ISI ranked peer reviewed journals which are cited 607 times (without self-citations) and has Hirsch factor =13. The papers are dedicated to the following areas: nanoelectronics, microwaves, MEMS, optoelectronics. My current research interests are relied to nanoelectronics. He is co-author of the following books:

  • D. Dragoman, M. Dragoman “Advanced Optoelectronic Devices”, Springer, 421 pages (1999) ,(2011).
  • D. Dragoman, M. Dragoman, “Optical Characterization of Solids, Springer, 450 pages (2002),
  • D.Dragoman, M.Dragoman “Quantum Classical Analogies”, Springer, 400 pages (2004)
  • M.Dragoman, D.Dragoman-Nanoelectronics. Principles and Devices, Artech House, Boston, USA (2006), 1st edition, 420 pages i,( 2006).
  • M.Dragoman, D.Dragoman-Nanoelectronics. Principles and Devices, Artech House, Boston, USA (2008),  2nd edition, 500 pages,(2009).
  • D.Dragoman, and M.Dragoman, Bionanoelectronics, Springer, 300 pages , (2012).

In 2002 he was nominalized at the descartes Prize of UE together other colleagues from IMT and other 6 research teams from abroad. He has received the Romanian Academy Prize  Gh. Cartianu  in  1999, for the book Advanced Optoelectronic Devices, Springer.

 
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Dr. Dan Neculoiu (dan.neculoiu@imt.ro)

Dr. Dan Neculoiu graduated the Polytechnical Institute of Bucharest, Faculty of Electronics in 1985; PhD degree in 1997. As a senior scientist at IMT-Bucharest, his main research areas are the electromagnetic simulations for the design and modelling of microwave circuits, membrane supported millimetre wave filters, antennae and receiver modules. He participated in the FP4 Project “MEMSWAVE” and in FP6 NoE in RF-MEMS “AMICOM”.

Now he is the head of the Romanian team in the FP7 project MEMS-4-MMIC. He is the author of more than 100 papers published in journals and Conference Proceedings in the area of RF-MEMS. Dr Dan Neculoiu is also full professor at the “Politehnica” University Bucharest.
 
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Dr. Sergiu Iordanescu (sergiu.iordanescu@imt.ro)

Mr. Iordanescu received M.Sc. degree in applied electronics in 1972, and Ph.D. degree in radio communication engineering in 2000, both from “Politehnica” University Bucharest; Ph.D. research subject: “PIN diode circuits and passive components on membranes”.

He is IEEE member, MTT Society (starting from 1991), Communication Society and Standards Association (starting from 2003).

From 1972 to 1977 he worked as research engineer with National Institute for Laser, Plasma and Radiation Physics (INFLPR), Magurele-Bucharest, responsible for high-speed pulse measurement techniques.

From 1977 to 2000 he worked with IMT-Bucharest (ICCE until 1996); he was Scientific Director of ICCE from 1991 to 1996. He is currently Senior Research Scientist at IMT-Bucharest.

From 2000 to 2014, he was with Alvarion SRL (Romanian branch of Alvarion Ltd.), as RF Design team leader and then RF Integration team leader, working in design, development, certification and testing of RF circuits and systems for OFDM communication equipment (802.11a /b /g /n and 802.16e).

Now he is involved in projects regarding micro-processed structures and components for microwave and millimiter wave applications. His main research interests concern small-signal and medium power microwave amplifiers, control circuits with PIN diodes, RF MEMS devices.

He is author (or co-author) of 14 scientific papers published in international journals and 44 papers published in international conference proceedings; he is author of 6 Romanian patents.

 
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Dr. Valentin Buiculescu (valentin.buiculescu@imt.ro)

Mr. Buiculescu received in 1972 M. Sc. degree in industrial electronics, and PhD title in radio communication engineering in 2000 from “Politehnica” University Bucharest. He is IEEE member, MTT Society, starting from 1990.

From 1972 to 2000 he worked with IMT Bucharest (ICCE until 1996); he is currently a Senior Research Engineer at IMT Bucharest.

From 2000 to 2010, he was senior research staff engineer with Alvarion Ltd., engaged in development of radio structures used in licensed and wireless access and radio certification for FCC, ETSI and Japanese standards. Now he is involved in projects regarding micro-processed structures and components aimed for low power communication applications.

His main research interests concern radio system design and optimization, microwave mixers, small signal amplifiers, SIW structures, mechanical design.

 
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Dr. Gina Adam (gina.adam@imt.ro)

Gina received her Bachelor’s degree in applied electronics from University Politehnica of Bucharest, Department of Engineering in Foreign Languages, German branch in 2010. She was the first Romanian to be awarded the Fulbright Science and Technology Award by the U.S. Department of State which provided funding for graduate studies at a U.S. institution. She was awarded her PhD. and MS. degrees in electrical engineering in 2015 and 2012 respectively by the University of California Santa Barbara. Her doctoral work in Dr. Dmitri Strukov's lab was on focused on the design, fabrication and electrical characterization of multi-layer TiO2-based memristive crossbars for neuromorphic and logic-in-memory applications

She was awarded a Marie Curie Individual Fellowship by the European Commission for her SelectX project and joined L4 group in April 2016. The project proposes the use of NEMS relays as selector devices for memristor crossbars and pursues the simulation, fabrication and characterization of a proof-of-concept crossbar of monolithically integrated memristor/NEMS device. The project is a collaboration between L4 group at IMT and Nanolab group at EPFL, Switzerland.

 
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Eng. Cristina Buiculescu (cristina.buiculescu@imt.ro)

She has obtained M.Sc. in Electronics at “Politechnica” University Bucharest.

She is working as a senior researcher III in the RF MEMS Laboratory. Her main research activities are now in the field of circuits for the millimeter wave communications (passive circuits elements, monolithically and hybrid integrated receiver front-ends) based on semiconductor (Si, GaAs, GaN) micromachining and acoustic devices (FBARs and SAWs) for

applications in the GHz frequency range, based on micromachining and nanoprocessing of wide band gap semiconductors, (GaN and AlN. She is co-author of 5 ISI papers and 25 international conference papers on microwave and RF-MEMS devices.
She is manager for IEEE International Semiconductor Conference- CAS since 2004.

 
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Eng. Ioana Petrini (ioana.petrini@imt.ro)

M.Sc. in Solid State Physics, University of Bucharest, 1972
Career:
1972-present :Research Scientist at the Research Institute for Electronic Components, now the National Institute for Research and Developments in Microtechnologies (IMT Bucharest since 1996);

Present position: Senior researcher in the Micromachined Structures, Microwave Devices and Circuits Laboratory, IMT Bucharest.

Research interests: Micromachining technologies, RF MEMS, Microphysical characterisation

Competences: silicon and GaAs micromachining; technological processes for GaAs monolithic integrated microwave circuits; design and manufacturing of pressure sensing structures on polyimide/GaAs membranes; manufacturing of microwave circuits supported on dielectric membranes; microphysical characterisations

Participation in national projects (Orizont 2000, MATNANTEC, PNII Programmes), bilateral scientific cooperation projects (with FORTH Heraklion, Irst Trento, Univ Pretoria, KERI Korea) and in EU Projects: MEMSWAVE (1998-2001), AMICOM(2004-2006), “MIMOMEMS” (2008-2010), ENIAC JU.

Publications: more than 50 papers published in International Conference Proceedings and ISI ranked journals.

 
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Dr. Alina Cismaru (alina.cismaru@imt.ro)

She graduated Faculty of Physics, University of Bucharest in 1998, Master degree in Solid State Physics, Faculty of Physics, University of Bucharest in 2000, graduated in Economy, Management Faculty, Academy of Economic Studies Bucharest in 2005, graduated PhD in  Solid State Physics, Faculty of Physics, University of Bucharest in 2008.

From 1998 is working as a researcher, in Micromachined Microwave Structures, Circuits and Devices Laboratory (RF- MEMS laboratory)– IMT  Bucharest.

From 2010 until 2013 she is acting as a  Postdoc Researcher in the POSDRU 6700 projectin RF- MEMS laboratory– IMT Bucharest financed by European Comunity and Ministry of Education, Youth and Sport Romania.

During the period 2002 – 2005, Dr. Cismaru was involved in modeling and microwave measurements of a micromachined MSW devices during the professional stages (2-4 months) in Microwave Microsystem Technology Group (M2T) - CNR Institute, Roma, Italy.

 Professional abilities are the following: modeling and microwave measurements of a micromachined MSW devices, modelling, fabrication and characterisation of electromagnetic band-gap filters in coplanar waveguide (CPW) configuration, microwave measurements of SAW and FBAR devices, microwave and DC measurements of devices based on graphene and CNT for RF-MEMS and biosensors applications, microwave and milimeter wave devices characterisation using on wafer setup and Vector Network Analyser  for 0.4 – 110 GHz frequency range. She is co-author of 18 ISI papers and 20 international conference papers on microwave and RF-MEMS devices.

 
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Dr. Alexandra Raluca Stefanescu (alexandra.stefanescu@imt.ro)

Alexandra Raluca Stefanescu obtained her Bsc in 2006 at Politehnica University of Bucharest. The final project has been realized at École Supérieure d’Electricté (SUPELEC), France.

In 2009 she finished the Phd studies in Electrical Engineering at Politehnica University of Bucharest and she was hired at IMT Bucharest in the frame of the European project FP7 REGPOT (2008 – 2011), European Centre of Excellence in Microwave, Millimeter Wave and Optical Devices based on Micro-Electro-Mechanical Systems for Advanced Communication Systems and Sensors (MIMOMEMS).

Since 2010 she is involved in a post-doctoral program funded by the EU, with a theme in the domain of Radio Frequency Microelectromechanical systems (RF - MEMS).

Her research interests focus on the modeling, design and fabrication of devices and microsystems based on MEMS technology for microwave applications.

 
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Dr. Alina-Cristina Bunea (alina.bunea@imt.ro)

Dr. Alina-Cristina Bunea received the B.Sc. (2009), M.Sc. (2011) and Ph.D. (2016) degrees from the “Politehnica” University of Bucharest, Romania. Her PhD thesis entitled “Contributions to Millimeter Wave Antennas For Imaging Applications”, focused on the design and characterization of high-performance antennas for a single pixel passive receiver front-end for imaging applications (extended summary available here).

She is currently working as a senior researcher (CS3) at IMT Bucharest, where she is involved in the design, 3D electromagnetic modeling and characterization of passive and active microwave circuits.

Her interests include: millimeter wave micromachined circuits, LTCC circuits, as well as the design and characterization of graphene-based microwave devices.
Up to 2017, she was involved in more than 10 international and national research projects and has authored or co-authored more than 40 conference papers, 6 ISI journal papers, 10 book chapters and 2 patents registered at OSIM.

 
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Dr. Martino Aldrigo (martino.aldrigo@imt.ro)

Martino Aldrigo obtained his Master of Science in Telecommunications Engineering in 2009 at the Faculty of Engineering, University of Bologna, Italy, with the final score 110/110 cum laude.

In 2014 he finished his Phd studies in Electronics Engineering, Telecommunications and Information Technology at the Faculty of Engineering, University of Bologna, Italy. In January 2014 he was hired at IMT Bucharest as Assistant Researcher in the frame of the European project FP7 STREP NANORF “Carbon Based Smart System for Wireless Applications” (2011-2015).

Since September 2015, he is a permanent Scientific Researcher at IMT Bucharest.

His research interests focus on the design, modeling, 3D electromagnetic simulation, fabrication and experimental characterization of micro- and nano-devices and systems for microwave and millimeter wave applications, based on graphene and other innovative 2D materials.

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Eng. Ioana Alexandra Giangu (ioana.giangu@imt.ro)

Ioana Alexandra Giangu obtained her Bachelor’s degree in 2011 and in 2013 she became Master of Science in Microsystems, granted by Faculty of Engineering in Electronics, Telecommunications and Information Technology, “Politehnica” University of Bucharest. She is currently a PhD student working to microwave characterization of temperature and pressure sensors based on acoustic devices.
She is employee of IMT Bucharest stating from April 2012 and has participated as team member in several national and FP7 European projects.
Her main activities focus on microwave measurements of SAW and FBAR devices.

 
 

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Last update: January, 2016