Research contract: PN-II-RU-TE-2014-4-2035; No. 112
Project manager: Dr. Andrada LAZEA-STOYANOVA, CS III, e-mail: andrada@infim.ro
Contracting Authority: Executive Agency For Higher Education, Research, Development And Innovation Funding
Funding: Govermental budget, Ministry of Education
Contract duration: 24 months

Institutions involved in the project:

National Institute for Laser, Plasma and Radiation Physics (NILPRP)
Low Temperature Plasma Laboratory
Plasma Processes for Functional Materials and Surfaces Group

Research team:
No. crt. Firstname Surname Place in project
1. Andrada LAZEA-STOYANOVA Project Manager
2. Gheorghe DINESCU Senior Scientist
3. Tomy ACSENTE Senior Scientist
4. Maria-Daniela IONITA Postdoctoral Scientist
5. Cristian STANCU Postdoctoral Scientist
6. Silviu-Daniel STOICA Postdoctoral Scientist
7. Maximilian TEODORESCU Postdoctoral Scientist
8. Nicoleta BANU PhD Student
9. Valentina MARASCU PhD Student


The metallic particles are of great importance due to their specific physical properties. The size, internal structure, morphology, composition, shape and surface properties, are just some of the features that made them suitable for multiple applications in various fields of science and technology. So, the applications based on metallic particles include applications in metallurgy domain, optics, medicine, sensors up to applications in the environment domain. However, in addition to its positive effects, the particles can cause negative effects, for example, the particles may influence the quality of semiconductor chips, or in nuclear fusion, the particles, formed by erosion of the reactor walls, can incorporate tritium limiting the plasma reactors operation. There are many ways for synthesizing metallic particles, but a novelty in getting metallic particles is by using "cold" radiofrequency plasma (13.56 MHz) at atmospheric pressure [1-2]. The approaches from the plasma domain include chemical processes, sustained by decomposing a metallic precursor or by ablation physical processes, spraying, pure metal evaporation followed by condensation. Evaporation / condensation method assisted by plasma is preferred, considering the disadvantages of chemical processes, such as using toxic precursors, possible contamination of the deposited material and post-treatment procedures.

Specific objectives

In the project's development are foreseen to be achieved the following objectives, which are specific, measurable, realistic, and present an innovative problem solving approach by using atmospheric pressure plasma. By using an inert discharge gas (argon), a special design of the plasma source generating a low-temperature plasma and as solid precursor the electrode's bulk material we are able to generate a low temperature plasma ("cold plasma") at atmospheric pressure. One of the project objective is to avoid the following aspects: the usage at atmospheric pressure of toxic and dangerous gases, he contamination problems determined by the usage of liquid precursors and the restrictive domain of precursors types. by using our plasma source concept and design we foreseen an improvement of the overall process of metallic particle synthesis at higher pressures.
  • Design and elaboration of a RF plasma jet source capable to sustain a low-temperature atmospheric pressure plasma and appropriate for metallic particle synthesis.
  • Metallic particles growth using low-temperature RF plasma jet at atmospheric pressure.
  • Metallic particles quality quantification in respect to the growth process parameters.
  • Particles nucleation and growth mechanism in low temperature the plasma jet .


Results delivered within the project:
i) scientific parameters to produce metallic particles, corresponding to each material (copper, titanium or zinc) using the atmospheric pressure plasma source;
ii) quantifying the quality of the metallic particles synthesized in the atmospheric pressure plasma "cold "jet;
iii) establishing the mechanism of the metallic particles synthesis in the atmospheric pressure plasma "cold "jet;
iv) scientific publications.


[1] A. Lazea- Stoyanova, M. Enculescu, S. Vizireanu, V. Marascu, G. Dinescu, Effects of process parameters on growth of metal particles by atmospheric pressure plasma jet, Digest Journal of Nanomaterials and Biostructures, Vol. 9, No. 3, July-September 2014, p. 1241-1247.
[2] A. Lazea-Stoyanova, A. Vlad, A. M. Vlaicu, V. S. Teodorescu, G. Dinescu, Synthesis of copper particles by non-thermal atmospheric pressure plasma jet, Plasma Processes and Polymers, Vol. 12, Issue 8, 836, 2015.




Plasma Processes, Materials and Surfaces Group