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Dr. Velea Alin

Scientific Researcher I

Laboratory of Optical Processes in Nanostructured Materials

alin[DOT]velea[AT]infim[DOT]ro

Education

Interuniversity Microelectronics Center (IMEC), KU Leuven, Belgium - Postdoctoral Fellowship - 2015 – 2016, Project: “Material selection and engineering for selector applications for future high density Resistive RAM Memories

Paul Scherrer Institute (PSI), Switzerland - Sciex Postdoctoral Fellowship, Scientific Exchange Programme NMS-CH - 2013 – 2014, Project: “In situ investigations of phase change in chalcogenide thin films using synchrotron techniques

University of Bucharest, Faculty of Physics, Romania - Ph.D. Fellowship (POSDRU) - Materials Science, 2008 – 2011, Thesis: “Phase change nanomaterials”

University of Bucharest, Faculty of Physics, Romania - M.S. - Materials Science, 2008 – 2010

University of Bucharest, Faculty of Physics, Romania - B.A. - Physics-Informatics, 2003 – 2008

Positions

Scientific Researcher I: National Institute of Materials Physics (NIMP), 2021 – present

Study of phase change in memristor devices;

Structural and optical properties of amorphous ternary chalcogenides thin films prepared by combinatorial sputtering;

Synthesis of Cu2S-ZnS-SnS2 thin films for solar cells;

Synthesis and characterization of 2D monochalcogenides;

 

Scientific Researcher II: National Institute of Materials Physics (NIMP), 2016 – 2021

Materials engineering for Ovonic Threshold Switching by combinatorial magnetron sputtering deposition and high throughput investigations;

Synthesis and characterization of 2D transition metal dichalcogenides;

Development of magnetron sputtering and chemical vapor transport deposition tools for obtaining 2D TMDCs and semiconductor thin films.

 

Postdoctoral research: IMEC, Belgium, 2015 – 2016

Preparation and electrical assessment of crossbar selector devices built by e-beam lithography;

Modeling subthreshold conduction in materials exhibiting ovonic threshold switching (OTS);

 

Scientific Researcher III: National Institute of Materials Physics, 2014 – 2015

X-ray diffraction and X-ray reflectometry investigations of phase change in GeTe, SnSe and GaSb mono and multilayers thin films;

Electrical resistance vs. temperature measurements and I-V characteristics of PCM.

Study of optical properties of chalcogenide phase change films by thermo-ellipsometry;

Simulation of the structure of Ge-As-Te chalcogenide materials during memory switching;

Relationship between the glass-formation domain and the memory-switching phenomena;

 

Postdoctoral research: Paul Scherrer Institute, Switzerland, 2013 – 2014

Study of phase change in chalcogenide thin films using synchrotron techniques (X-ray diffraction and X-ray spectroscopy);

In situ investigations of amorphous chalcogenide layers crystallization;

 

Scientific Researcher: National Institute of Materials Physics, Romania, 2009 – 2013

Arsenic trisulphide microlenses and photonic structures obtained through femtosecond laser irradiation of vacuum thermal deposited/pulsed laser deposited As2S3 thin films; Silver diffusion study in arsenic trisulphide matrix obtained by ultraviolet, green light and broadband light irradiation of As2S3/Ag heterostructures;

 

Doctoral Research: National Institute of Materials Physics, Romania, 2008-2011

Study of undoped and metal doped chalcogenide phase change materials from the Ge – Sb –Te and Sn – Se systems for applications in data storage;

Cellular Automata and Monte Carlo modeling of the switching process in chalcogenide phase change materials;

 

Assistant Researcher: National Institute of Materials Physics, Romania, 2007 – 2009

As2S3 spherical microlenses production and couplings of optical fibers to laser diodes through chalcogenide microlenses; Study of the modifications induced by UV radiation in spherical microlenses made of glassy arsenic sulphide.

Awards

“Radu Grigorovici” prize awarded by the Romanian Academy in 2020 for my work in chalcogenide materials.

Patents

 US10902914B2 Programmable Resistive Memory Element and a Method of Making the Same

Projects

1. Functional 2D materials and heterostructures for hybrid spintronic-memristive devices
Project Type: M-ERA.NET, Start Date: 2019-09-01 End Date: 2022-08-31
2. A map for ovonic threshold switching materials (AMOS)
Project Type: TE, Start Date: 2018-05-02 End Date: 2020-04-30
3. Investigation of phase change in stacked chalcogenide thin films for multistate memory cells
Project Type: TE, Start Date: 2015-10-01 End Date: 2017-11-30

Publications

1. Effect of the stacking order, annealing temperature and atmosphere on crystal phase and optical properties of Cu2SnS3
Authors: Zaki, MY; Sava, F; Simandan, ID; Buruiana, AT; Mihai, C; Velea, A; Galca, AC

Published: MAY 13 2022, SCIENTIFIC REPORTS, 12, 7958, DOI: 10.1038/s41598-022-12045-3

2. Layered SnSe nanoflakes with anharmonic phonon properties and memristive characteristics
Authors: Buruiana, AT; Bocirnea, AE; Kuncser, AC; Tite, T; Matei, E; Mihai, C; Zawadzka, N; Olkowska-Pucko, K; Kipczak, L; Babinski, A; Molas, MR; Velea, A; Galca, AC

Published: OCT 15 2022, APPLIED SURFACE SCIENCE, 599, 153983, DOI: 10.1016/j.apsusc.2022.153983

3. 'Put variety in White': Multi-analytical investigation of the white pigments inlaid on Early Chalcolithic pottery from Southern Romania
Authors: Opris, V; Velea, A; Secu, M; Rostas, AM; Buruiana, AT; Simion, CA; Mirea, DA; Matei, E; Bartha, C; Dimache, M; Lazar, C

Published: APR 2022, JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS, 42, 103402, DOI: 10.1016/j.jasrep.2022.103402

4. Synthesis and characterization of some C-Ti based multilayer and composite nanostructures
Authors: Ciupina, V; Lungu, CP; Vladoiu, R; Prodan, GC; Porosnicu, C; Vasile, E; Prodan, M; Nicolescu, V; Dinca, V; Cupsa, O; Velea, A; Manu, R

Published: MAR-APR 2022, JOURNAL OF OVONIC RESEARCH, 18, DOI: 10.15251/JOR.2022.182.177

5. Synthesis and Characterization of Cu2ZnSnS4 Thin Films Obtained by Combined Magnetron Sputtering and Pulsed Laser Deposition
Authors: Zaki, MY; Sava, F; Buruiana, AT; Simandan, ID; Becherescu, N; Galca, AC; Mihai, C; Velea, A

Published: SEP 2021, NANOMATERIALS, 11, DOI: 10.3390/nano11092403

6. The Effect of the Deposition Method on the Structural and Optical Properties of ZnS Thin Films
Authors: Simandan, ID; Sava, F; Buruiana, AT; Burducea, I; Becherescu, N; Mihai, C; Velea, A; Galca, AC

Published: SEP 2021, COATINGS, 11, DOI: 10.3390/coatings11091064

7. Micrometer Sized Hexagonal Chromium Selenide Flakes for Cryogenic Temperature Sensors
Authors: Buruiana, AT; Sava, F; Iacob, N; Matei, E; Bocirnea, AE; Onea, M; Galca, AC; Mihai, C; Velea, A; Kuncser, V

Published: DEC 2021, SENSORS, 21, DOI: 10.3390/s21238084

8. Multilevel Memristive GeTe Devices
Authors: Velea, A; Dumitru, V; Sava, F; Galca, AC; Mihai, C

Published: MAR 2021, PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 15, DOI: 10.1002/pssr.202000475

9. Influence of Deposition Method on the Structural and Optical Properties of Ge2Sb2Te5
Authors: Simandan, ID; Sava, F; Buruiana, AT; Galca, AC; Becherescu, N; Burducea, I; Mihai, C; Velea, A

Published: JUL 2021, MATERIALS, 14, DOI: 10.3390/ma14133663

10. Thermal stability of amorphous metal chalcogenide thin films
Authors: Sava, F; Simandan, ID; Stavarache, I; Porosnicu, C; Mihai, C; Velea, A

Published: MAY 1 2021, JOURNAL OF NON-CRYSTALLINE SOLIDS, 559, DOI: 10.1016/j.jnoncrysol.2021.120663

11. Structural and optical properties of amorphous Si-Ge-Te thin films prepared by combinatorial sputtering
Authors: Mihai, C; Sava, F; Simandan, ID; Galca, AC; Burducea, I; Becherescu, N; Velea, A

Published: JUN 3 2021, SCIENTIFIC REPORTS, 11, DOI: 10.1038/s41598-021-91138-x

12. Simple and clean method for obtaining Sn nanoparticles for hydrophobic coatings
Authors: Buruiana, AT; Sava, F; Matei, E; Zgura, I; Burdusel, M; Mihai, C; Velea, A

Published: NOV 1 2020, MATERIALS LETTERS, 278, DOI: 10.1016/j.matlet.2020.128419

13. Characterization of C-Ti multilayer thin films obtained by TVA technology
Authors: Ciupina, V; Lungu, CP; Vladoiu, R; Prodan, GC; Porosnicu, C; Vasile, E; Prodan, M; Nicolescu, V; Dinca, V; Manu, R; Cupsa, O; Velea, A

Published: 2020, NANOENGINEERING: FABRICATION, PROPERTIES, OPTICS, THIN FILMS, AND DEVICES XVII, 11467, DOI: 10.1117/12.2567927

14. Chalcogenide Science in Romania
Authors: Lorinczi, A; Badica, P; Botila, T; Ciurea, M; Velea, A; Popescu, A; Socol, G; Antohe, S; Nedelcu, N; Sobetkii, A

Published: NOV 2020, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 257, DOI: 10.1002/pssb.202000284

15. Secondary Crystalline Phases Influence on Optical Properties in Off-Stoichiometric Cu2S-ZnS-SnS2 Thin Films
Authors: Sava, F; Diagne, O; Galca, AC; Simandan, ID; Matei, E; Burdusel, M; Becherescu, N; Becherescu, V; Mihai, C; Velea, A

Published: OCT 2020, MATERIALS, 13, DOI: 10.3390/ma13204624

16. Low power non-volatile memory switching in monolayer-rich 2D WS2 and MoS2 devices
Authors: Mihai, C; Sava, F; Galca, AC; Velea, A

Published: FEB 1 2020, AIP ADVANCES, 10, DOI: 10.1063/1.5140717

17. Effect of the process control agent in the ball-milled powders and SPS-consolidation temperature on the grain refinement, density and Vickers hardness of Fe14Cr ODS ferritic alloys
Authors: Mihalache, V; Mercioniu, I; Velea, A; Palade, P

Published: APR 1 2019, POWDER TECHNOLOGY, 347, 113, DOI: 10.1016/j.powtec.2019.02.006

18. Structural characterisation and thermal stability of SnSe\GaSb stacked films
Authors: Sava, F; Borca, CN; Galca, AC; Socol, G; Grolimund, D; Mihai, C; Velea, A

Published: JAN 2 2019, PHILOSOPHICAL MAGAZINE, 99, 72, DOI: 10.1080/14786435.2018.1529442

19. Nonvolatile resistance switching in monolayer transition metal dichalcogenides: an explanation
Authors: Mihai, C; Velea, A; Sava, F

Published: DEC 2019, SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 34, DOI: 10.1088/1361-6641/ab4b85

20. Structural, Compositional, and Mechanical Characterization of WxCryFe1-x-y Layers Relevant to Nuclear Fusion, Obtained with TVA Technology
Authors: Lungu, M; Porosnicu, I; Dinca, P; Velea, A; Baiasu, F; Butoi, B; Pompilian, OG; Staicu, C; Constantina, PA; Porosnicu, C; Lungu, C; Tiseanu, I

Published: DEC 2 2019, MATERIALS, 12, DOI: 10.3390/ma12244072

21. Energy-enhanced deposition of copper thin films by bipolar high power impulse magnetron sputtering
Authors: Velicu, IL; Ianos, GT; Porosnicu, C; Mihaila, I; Burducea, I; Velea, A; Cristea, D; Munteanu, D; Tiron, V

Published: FEB 15 2019, SURFACE & COATINGS TECHNOLOGY, 359, 107, DOI: 10.1016/j.surfcoat.2018.12.079

22. Negative ion-induced deuterium retention in mixed W-Al layers co-deposited in dual-HiPIMS
Authors: Dinca, P; Tiron, V; Velicu, IL; Porosnicu, C; Butoi, B; Velea, A; Grigore, E; Costin, C; Lungu, CP

Published: APR 15 2019, SURFACE & COATINGS TECHNOLOGY, 363, 281, DOI: 10.1016/j.surfcoat.2019.02.019

23. Thermal stability of phase change GaSb\GeTe, SnSe\GeTe and GaSb\SnSe double stacked films revealed by X-ray reflectometry and X-ray diffraction
Authors: Velea, A; Sava, F; Socol, G; Vlaicu, AM; Mihai, C; Lorinczi, A; Simandan, ID

Published: JUL 15 2018, JOURNAL OF NON-CRYSTALLINE SOLIDS, 492, 17, DOI: 10.1016/j.jnoncrysol.2018.02.033

24. Structural and optical properties of optimized amorphous GeTe films for memory applications
Authors: Galca, AC; Sava, F; Simandan, ID; Bucur, C; Dumitru, V; Porosnicu, C; Mihai, C; Velea, A

Published: NOV 1 2018, JOURNAL OF NON-CRYSTALLINE SOLIDS, 499, 7, DOI: 10.1016/j.jnoncrysol.2018.07.007

25. Thermal Stress Effect on the Structure and Properties of Single and Double Stacked Films of GeTe and SnSe
Authors: Sava, F; Borca, CN; Galca, AC; Socol, G; Grolimund, D; Mihai, C; Velea, A

Published: JUN 2018, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 255, DOI: 10.1002/pssb.201700552

26. Phase change cellular automata modeling of GeTe, GaSb and SnSe stacked chalcogenide films
Authors: Mihai, C; Velea, A

Published: JUN 2018, MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 26, DOI: 10.1088/1361-651X/aab62f

27. Te-based chalcogenide materials for selector applications
Authors: Velea, A; Opsomer, K; Devulder, W; Dumortier, J; Fan, J; Detavernier, C; Jurczak, M; Govoreanu, B

Published: AUG 14 2017, SCIENTIFIC REPORTS, 7, DOI: 10.1038/s41598-017-08251-z

28. Photoexpansion in amorphous As2S3: A new explanation
Authors: Lorinczi, A; Sava, F; Simandan, ID; Velea, A; Popescu, M

Published: SEP 1 2016, JOURNAL OF NON-CRYSTALLINE SOLIDS, 447, 125, DOI: 10.1016/j.jnoncrysol.2016.06.010

29. Amorphous thin films in the gallium-chalcogen system
Authors: Popescu, M; Sava, F; Lorinczi, A; Velea, A; Simandan, ID; Galca, AC; Matei, E; Socol, G; Gherendi, F; Savastru, D; Miclos, S

Published: JUN 2016, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 253, 1037, DOI: 10.1002/pssb.201552551

30. Thin films of amorphous Ga2S3 and rare-earth sulphides
Authors: Popescu, M; Lorinczi, A; Sava, F; Velea, A; Simandan, ID; Badica, P; Burdusel, M; Galca, AC; Socol, G; Jipa, F; Zamfirescu, M

Published: MAR 1 2015, MATERIALS LETTERS, 142, 231, DOI: 10.1016/j.matlet.2014.12.028

31. In-situ characterization of the optical and electronic properties in GeTe and GaSb thin films
Authors: Velea, A; Socol, G; Popescu, M; Galca, AC

Published: OCT 7 2015, JOURNAL OF APPLIED PHYSICS, 118, DOI: 10.1063/1.4932666

32. Ceramics and amorphous thin films based on gallium sulphide doped by rare-earth sulphides
Authors: Popescu, M; Sava, F; Lorinczi, A; Velea, A; Simandan, ID; Badica, P; Burdusel, M; Galca, AC; Matei, E; Preda, N; Secu, M; Socol, G; Jipa, F; Zamfirescu, M; Balan, A

Published: APR 2015, SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 30, DOI: 10.1088/0268-1242/30/4/044001

33. In-situ crystallization of GeTe\GaSb phase change memory stacked films
Authors: Velea, A; Borca, CN; Socol, G; Galca, AC; Grolimund, D; Popescu, M; van Bokhoven, JA

Published: DEC 21 2014, JOURNAL OF APPLIED PHYSICS, 116, DOI: 10.1063/1.4904741

34. Chalcogenide systems at the border of the glass-formation domain: A key for understanding the memory-switching phenomena
Authors: Popescu, M; Velea, A; Sava, F; Lorinczi, A

Published: JUL 2014, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 251, 1339, DOI: 10.1002/pssb.201350104

35. Self-organization and Size Effects in Amorphous Silicon
Authors: Popescu, M; Sava, F; Velea, A

Published: 2014, SIZE EFFECTS IN NANOSTRUCTURES: BASICS AND APPLICATIONS, 205, 45, DOI: 10.1007/978-3-662-44479-5_2

36. Simulation of the structure of GeAs4Te7 chalcogenide materials during memory switching
Authors: Popescu, M; Sava, F; Velea, A; Lorinczi, A; Simandan, ID

Published: JUL 2014, CANADIAN JOURNAL OF PHYSICS, 92, 680, DOI: 10.1139/cjp-2013-0561

37. UV SENSING EFFECT IN LANGMUIR-BLODGETT COMPLEX FILMS CONTAINING A NOVEL SYNTHESIZED Fe(III) PORPHYRIN
Authors: Baschir, L; Fagadar-Cosma, E; Creanga, I; Palade, A; Lascu, A; Birdeanu, M; Savastru, D; Savu, V; Antohe, S; Velea, A; Fagadar-Cosma, G; Popescu, M; Simandan, ID

Published: APR-JUN 2014, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 9, 857, DOI:

38. Optics of microlenses created by irradiation of As2S3 amorphous chalcogenide films with femtosecond laser pulses
Authors: Popescu, M; Velea, A; Miclos, S; Savastru, D

Published: APR 1 2013, PHILOSOPHICAL MAGAZINE LETTERS, 93, 220, DOI: 10.1080/09500839.2012.760058

39. EFFECT OF THERMAL ANNEALING ON THE STRUCTURAL AND OPTICAL PROPERTIES OF Ag/As2S3 MULTILAYERS
Authors: Sava, F; Lorinczi, A; Velea, A; Simandan, ID; Preda, N; Socol, G; Mihailescu, IN; Zamfira, CS; Cretu, NC; Popescu, M

Published: NOV 2013, CHALCOGENIDE LETTERS, 10, 471, DOI:

40. Effect of broadband light on Ag/As2S3 multilayers
Authors: Sava, F; Velea, A; Popescu, M; Lorinczi, A; Simandan, ID; Vlaicu, AM; Socol, G; Mihailescu, IN; Stefan, N

Published: OCT 1 2013, JOURNAL OF NON-CRYSTALLINE SOLIDS, 377, 161, DOI: 10.1016/j.jnoncrysol.2013.02.023

41. Possible mechanism of Ag photodiffusion in a-As2S3 thin films
Authors: Sava, F; Popescu, M; Lorinczi, A; Velea, A

Published: MAY 2013, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 250, 1003, DOI: 10.1002/pssb.201248517

42. Disorder in order: silicon versus graphene
Authors: Popescu, M; Sava, F; Lorinczi, A; Velea, A

Published: MAY 2013, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 250, 1010, DOI: 10.1002/pssb.201248516

43. Modeling the slaving of structural fluctuations in bio-molecules to those of nearby water
Authors: Mihai, C; Velea, A; Roman, N; Tugulea, L; Moldovan, NI

Published: JUL-SEP 2012, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 7, 915, DOI:

44. IMPACT OF SOLUTE MOLECULAR PROPERTIES ON THE ORGANIZATION OF NEARBY WATER: A CELLULAR AUTOMATA MODEL
Authors: Mihai, C; Velea, A; Roman, N; Tugulea, L; Moldovan, NI

Published: APR-JUN 2012, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 7, 475, DOI:

45. Possible mechanisms of switching in amorphous chalcogenides
Authors: Popescu, M; Velea, A

Published: OCT 2012, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 249, 1971, DOI: 10.1002/pssb.201200351

46. LUMINESCENCE OF EUROPIUM IN ARSENIC SULPHIDE MATRIX
Authors: Popescu, M; Lorinczi, A; Velea, A; Simandan, ID; Sava, F; Pavelescu, G; Niciu, GH; Niciu, DO; Mihailescu, IN; Socol, G; Stefan, N

Published: NOV 2011, CHALCOGENIDE LETTERS, 8, 702, DOI:

47. SENSOR OF NITROGEN DIOXIDE BASED ON SINGLE WALL CARBON NANOTUBES AND MANGANESE-PORPHYRIN
Authors: Popescu, M; Simandan, ID; Sava, F; Velea, A; Fagadar-Cosma, E

Published: JUL-SEP 2011, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 6, 1256, DOI:

48. Optical properties of phase change memory Ge1Sb2Te4 glasses
Authors: Iovu, MS; Colomeico, EP; Benea, VG; Popescu, M; Lorinczi, A; Velea, A

Published: NOV-DEC 2011, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 13, 1486, DOI:

49. Eu3+ LUMINESCENCE IN As2S3 DOT NETWORK
Authors: Georgescu, S; Popescu, M; Sava, F; Velea, A; Pavelescu, G

Published: DEC 2011, CHALCOGENIDE LETTERS, 8, 738, DOI:

50. Nanocarbon embedded chalcogenides. Onion-like model
Authors: Popescu, M; Sava, F; Lorinczi, A; Velea, A; Simandan, ID

Published: NOV-DEC 2011, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 13, 1453, DOI:

51. Silver doped As2S3 chalcogenide films: A diffusion study
Authors: Lorinczi, A; Popescu, M; Sava, F; Velea, A; Simandan, ID

Published: 2011, PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 9, 8, 2620, DOI: 10.1002/pssc.201084096

52. COMPLEX PHOTOCONDUCTORS CHALCOGEN-POLYMER
Authors: Simandan, ID; Velea, A; Popescu, M

Published: OCT 2011, CHALCOGENIDE LETTERS, 8, 614, DOI:

53. NON-LINEAR BEHAVIOUR IN SILVER - ARSENIC SULFIDE SYSTEM
Authors: Popescu, M; Lorinczi, A; Gherendi, F; Nistor, M; Velea, A; Simandan, ID; Sava, F

Published: NOV-DEC 2011, JOURNAL OF OVONIC RESEARCH, 7, 133, DOI:

54. LUMINESCENCE OF ARSENIC SULPHIDE DOTS DOPED WITH EUROPIUM, PREPARED BY THERMAL EVAPORATION AND PULSED LASER DEPOSITION METHODS
Authors: Popescu, M; Velea, A; Simandan, ID; Sava, F; Lorinczi, A; Ghervase, L; Pavelescu, G; Mihailescu, IN; Socol, G; Georgescu, S

Published: DEC 2011, CHALCOGENIDE LETTERS, 8, 724, DOI:

55. Influence of defects on the switching speed of Ge2Sb2Te5
Authors: Velea, A; Popescu, M; Lorinczi, A; Sava, F; Simandan, ID; Mihai, C

Published: NOV-DEC 2011, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 13, 1596, DOI:

56. New insight into phase change memories
Authors: Velea, A

Published: JUL 1 2011, JOURNAL OF NON-CRYSTALLINE SOLIDS, 357, 2631, DOI: 10.1016/j.jnoncrysol.2011.02.014

57. TWO DIMENSIONAL PHOTONIC STRUCTURES BASED ON As-S CHALCOGENIDE GLASS
Authors: Popescu, M; Velea, A; Lorinczi, A; Zamfirescu, M; Jipa, F; Miclos, S; Popescu, A; Ciobanu, M; Savastru, D

Published: OCT-DEC 2010, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 5, 1105, DOI:

58. SYNTHESIS AND LUMINESCENCE PROPERTIES OF Nd-DOPED CHALCOGENIDE GLASS (Ge5As2S13) (NdCl3) x (x=0.3%, 0.5%)
Authors: Georgescu, S; Voiculescu, AM; Salamu, S; Niciu, H; Niciu, D; Popescu, M; Lorinczi, A; Velea, A; Simandan, ID

Published: NOV 2010, CHALCOGENIDE LETTERS, 7, 624, DOI:

59. STRUCTURAL DETAILS OF THE Ag-As2S3 INTERFACE OBTAINED BY VACUUM THERMAL EVAPORATION FOLLOWED BY GREEN LASER IRRADIATION
Authors: Lorinczi, A; Velea, A; Matei, E; Simandan, ID; Popescu, M

Published: NOV 2010, CHALCOGENIDE LETTERS, 7, 612, DOI:

60. PREPARATION AND PROPERTIES OF BARIUM STEARATE MULTILAYERS WITH CARBON NANOTUBES, MANGANESE PORPHYRIN AND SILVER NITRATE
Authors: Simandan, ID; Popescu, M; Lorinczi, A; Velea, A; Fagadar-Cosma, E

Published: OCT-DEC 2010, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 5, 1033, DOI:

61. Langmuir and Langmuir-Blodgett films based on stearic acid, barium stearate and carbon nanotubes
Authors: Simandan, ID; Sava, F; Velea, A; Lorinczi, A; Popescu, M

Published: AUG 2010, OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, 4, 1181, DOI:

62. Structure and Mossbauer measurements on SnSe2 bulk and thin films
Authors: Bibicu, I; Lorinczi, A; Velea, A; Sava, F; Popescu, M

Published: OCT 2010, OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, 4, 1571, DOI:

63. MOULDING PROCEDURE FOR THE PREPARATION OF INFRARED GLASSY MICROLENSES AND PRISMS BASED ON ARSENIC SULPHIDE CHALCOGENIDE GLASS
Authors: Niciu, H; Popescu, M; Velea, A; Lorinczi, A; Manea, A; Niciu, D; Lazarescu, M

Published: NOV 2010, CHALCOGENIDE LETTERS, 7, 629, DOI:

64. Structure and properties of silver doped SnSe2 and Ge2Sb2Te5 thin films prepared by pulsed laser deposition
Authors: Popescu, M; Velea, A; Sava, F; Lorinczi, A; Tomescu, A; Simion, C; Matei, E; Socol, G; Mihailescu, IN; Andonie, A; Stamatin, I

Published: MAR 2010, PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 207, 520, DOI: 10.1002/pssa.200982900

65. SIMULATION OF PHASE CHANGE MATERIALS USING CELLULAR AUTOMATA
Authors: Velea, A

Published: OCT-DEC 2010, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 5, 1027, DOI:

66. QUANTITATIVE STRUCTURE - ACTIVITY RELATIONSHIP IN ANTIDIABETIC DRUGS BY USING TOPOLOGICAL DESCRIPTORS
Authors: Popescu, M; Velea, A; Mihai, C; Tivadar, S

Published: JUL-SEP 2010, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 5, 633, DOI:

67. BIOGENIC PRODUCTION OF NANOPARTICLES
Authors: Popescu, M; Velea, A; Lorinczi, A

Published: OCT-DEC 2010, DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES, 5, 1040, DOI:

68. Tellurium based phase change materials
Authors: Velea, A

Published: DEC 2009, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 11, 1987, DOI:

69. Optical fiber coupling to a laser diode through chalcogenide microlenses
Authors: Velea, A; Rusu, M; Popescu, M

Published: OCT 2009, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 11, 1383, DOI:

70. Direct laser writing of two-dimensional photonic structures in amorphous As2S3 thin films
Authors: Popescu, A; Miclos, S; Savastru, D; Savastru, R; Ciobanu, M; Popescu, M; Lorinczi, A; Sava, F; Velea, A; Jipa, F; Zamfirescu, M

Published: NOV 2009, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 11, 1880, DOI:

71. Crystalline-amorphous and amorphous-amorphous transitions in phase-change materials
Authors: Popescu, M; Sava, F; Velea, A; Lorinczi, A

Published: OCT 1 2009, JOURNAL OF NON-CRYSTALLINE SOLIDS, 355, 1823, DOI: 10.1016/j.jnoncrysol.2009.04.053

72. Silver/amorphous As2S3 heterostructure
Authors: Popescu, M; Sava, F; Lorinczi, A; Velea, A; Leonovici, M; Zamfira, S

Published: NOV 2009, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 11, 1594, DOI:

73. Modelling of dissolution kinetics of thin amorphous chalcogenide films
Authors: Popescu, M; Sava, F; Lorinczi, A; Velea, A; Vlcek, M; Jain, H

Published: 2009, PHILOSOPHICAL MAGAZINE LETTERS, 89, 376, DOI: 10.1080/09500830902960117

74. Matrix-assisted photo-amorphization effect in As40S30Se30 films with silver
Authors: Popescu, M; Petkov, K; Sava, F; Taseeva, J; Lorinczi, A; Velea, A

Published: DEC 2009, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 11, 2003, DOI:

75. COMMUTON - A NEW CONCEPT IN SWITCHING MATERIALS
Authors: Popescu, M; Velea, A; Lorinczi, A; Sava, F

Published: MAR-APR 2009, JOURNAL OF OVONIC RESEARCH, 5, 34, DOI:

76. PHASE CHANGE MATERIALS: CHEMICAL BONDING AND STRUCTURAL PROPERTIES
Authors: Velea, A; Popescu, M

Published: SEP-DEC 2009, PROCEEDINGS OF THE ROMANIAN ACADEMY SERIES A-MATHEMATICS PHYSICS TECHNICAL SCIENCES INFORMATION SCIENCE, 10, 236, DOI:

77. Chalcogenide photonic structures
Authors: Popescu, M; Savastru, D; Popescu, A; Miclos, S; Lorinczi, A; Sava, F; Velea, A; Baschir, L; Ciobanu, M; Matei, E; Socol, G; Mihailescu, IN; Niciu, H

Published: SEP 2009, OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS, 3, 859, DOI:

78. Phase-change electrical memory elements and devices
Authors: Popescu, M; Lorinczi, A; Sava, F; Velea, A; Matei, E; Socol, G; Mihailescu, IN

Published: OCT 2008, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 10, 2621, DOI:

79. The modification induced by UV radiation in spherical microlenses made of glassy arsenic sulphide
Authors: Rusu, M; Velea, A; Popescu, M

Published: DEC 2008, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 10, 3171, DOI:

80. Alternating barium stearate and copper stearate LB thin films
Authors: Popescu, M; Lorinczi, A; Velea, A; Sava, F

Published: DEC 2008, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 10, 3415, DOI:

81. Ceramic materials Ba(1-x)SrxTiO3 for electronics - Synthesis and characterization
Authors: Berbecaru, C; Alexandru, HV; Porosnicu, C; Velea, A; Ioachim, A; Nedelcu, L; Tonsan, M

Published: SEP 30 2008, THIN SOLID FILMS, 516, 8214, DOI: 10.1016/j.tsf.2008.04.031

82. DC conductivity in GeSb2Te4 and (GeSb2Te4)(90)(SnSe2)(10) phase change materials
Authors: Popescu, M; Kubliha, M; Kaluzny, J; Velea, A; Lorinczi, A

Published: DEC 2007, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 9, 3953, DOI:

83. Crystallization of PLD deposited ITO thin films by thermal treating in various gaseous environments
Authors: Viespe, C; Grigoriu, C; Popescua, M; Sava, F; Lorinczi, A; Velea, A; Zamfira, S

Published: NOV 2007, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, 9, 3566, DOI:

84. Multilevel Memristive GeTe Devices
Authors: Velea, A; Dumitru, V; Sava, F; Galca, AC; Mihai, C

Published: , PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2000475, DOI: 10.1002/pssr.202000475

85. Chalcogenide Science in Romania
Authors: Lorinczi, A; Badica, P; Botila, T; Ciurea, M; Velea, A; Popescu, A; Socol, G; Antohe, S; Nedelcu, N; Sobetkii, A

Published: , , DOI: 10.1002/pssb.202000284

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