Timucin Velula
Scientific
Researcher 3-st degree

phone: +40-21369 0170 / 163
Fax    : +40-21369 0177

e-mail: velula@infim.ro
http://www.infim.ro/~velula/


EDUCATION:

M. Sc., Physics-University Politehnica of Bucharest, Faculty of Electronics and Telecomunications, 1972


Professional positions
:

Senior research scientist IIIrd degree, Laboratory of Optical Process in Nanostructured Materials (LOPNM), NIMP, 2010-at present

Senior research scientist IIIrd degree, LOS, NIMP, 1974-2009

Assistant researcher, LOS, NIMP, 1972


Professional experiences:

Photoluminescence and FTIR spectroscopy


AWARDS:

Prize for Physics, "Constantin Miculescu", of the Romanian Academy for the group of papers Raman spectroscopy studies on carbon nanoparticles - fullerene and carbon nanotubes 2007


Present Research Interests

Photoluminescence properties of the ZnO nanoparticles

 

Publications in 2005-2009:

1. Electrochemical and vibration properties of single-walled carbon nanotubes in  hydrochloric acid solutions; S.Lefrant, M.Baibarac, I.Baltog, T.Velula, J.Y.Mevellec, O.Chauvet; Diamond and Related Materials;  14 (3-7); 873-880; 2005


2. Surface enhanced Raman scattering and photoluminescence studies on single-walled carbon nanotubes subjected to non-hydrostatic compression; M.Baibarac, I.Baltog, L.Mihut, N.Preda, T.Velula, C. Godon, J.Y.Mevellec, J.Wery, S.Lefrant; Journal of Optoelectronics and Advanced Materials; 7; 2173-2181; 2005


3. Surface-enhanced Raman scattering, photo-luminescence and viscosity studies on C60 aggregates in N-methyl-2-pyrrolidinone; I.Baltog, L.Mihut, M.Baibarac, N.Preda, T.Velula, S.Lefrant; Journal of Optoelectronics and Advanced Materials; 7; 2165-2172; 2005


4. Optical properties of low-dimensional PbI2 particles embedded in polyacrylamide matrix, N. Preda, L. Mihut, I. Baltog, T. Velula, V. Teodorescu, Journal of Optoelectronics and Advanced Materials 8 (3), 909-913, 2006


5. Photoluminescence properties of composites based on zinc oxyde and single-walled carbon nanotubes, M. Baibarac, I. Baltog, M. Husanu, T. Velula, C. Bucur, L. Mihut, N. Preda, Journal of Optoelectronics and Advanced Materials 10 (2), 288, 2008


6. Absorption and luminescence properties of C70 aggregates in solvent mixtures, A.M. Husanu, I. Baltog, M. Baibarac, N.Preda, L. Mihut, T. Velula, C. Bucur, Romanian Journal in Physics 54 (5-6), 529-538, 2009


7. The intercalation of PbI2 with 2, 2-bipyridine evidenced by photoluminescence, FTIR and Raman spectroscopy, N. Preda, L. Mihut, M. Baibarac, I. Baltog, M. Husanu, C. Bucur, T. Velula, Romanian Journal in Physics 54 (7-8), 667-675, 2009


8. Vibrational properties of polyaniline functionalized PbI2, I. Baltog, M. Baibarac, L. Mihut, N. Preda, T. Velula, C. Bucur, M. Husanu, Romanian Journal in Physics 54 (7-8), 677-688, 2009


9. ZnO particles of wurtzite structure as a component in ZnO/carbon nanotube composite, M. Baibarac, I. Baltog, T. Velula, I. Pasuk, S. Lefrant, N. Gautier, Journal of Physics Condensed Matter 21 (44), 445801, 2009


10. Nanostructured gold layers. III. Functionalization of gold layers obliquely deposited onto polystyrene substrate, I. Zgura, T. Beica, L. Frunza, C. Cotirlan-Simioniuc, F. Ungureanu, N. Gheorghe, O. Rasoga, T. Velula, C. Zaharia, Journal of Optoelectronics and Advanced Materials 12 (8), 1729-1738, 2010