C. Luculescu

Publications (2)3.2 Total impact

• Source

  Available from: Alexandra Palla-Papavlu

  Article: A comparative study of DRL-lift and lift on integrated polyisobutylene polymer matrices

  V. Dinca, A. Palla Papavlu, A. Matei, C. Luculescu, M. Dinescu, T. Lippert, F. Di Pietrantonio, D. Cannata, M. Benetti, E. Verona
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  ABSTRACT: This paper presents a comparative study of polymer pixel on sensors obtained by Laser Induced Forward Transfer (LIFT) assisted by a triazene polymer as Dynamic Release Layer (DRL). Polyisobutylene (PIB) was selected as model for chemoselective polymers which could be used as hydrogen-bond acidic polymer for vapor sensors. PIB films deposited on fused silica, respectively, on triazene polymer coated fused silica substrates were used as targets. Both targets were prepared by Matrix Assisted Pulsed Laser Evaporation (MAPLE). The parameters related to a regular, well-defined transfer were analyzed and compared for the substrates with and without the DRL. The morphological characterization of the transferred PIB was performed by Atomic Force Microscopy (AFM), Optical Microscopy, and Scanning Electron Microscopy (SEM). It was found that a minimal thickness of the dynamic release layer, i.e. 100 nm is required to protect the sensitive PIB polymer in a clean laser transfer process.
  Applied Physics A 04/2012; 101(2):429-434. · 1.63 Impact Factor
• Source

  Available from: Alexandra Palla-Papavlu

  Article: Laser induced forward transfer of soft materials

  A Palla-Papavlu, V Dinca, C Luculescu, J Shaw-Stewart, M Nagel, T Lippert, M Dinescu
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  ABSTRACT: A strong research effort is presently aimed at patterning methodologies for obtaining controlled defined micrometric polymeric structures for a wide range of applications, including electronics, optoelectronics, sensors, medicine etc. Lasers have been identified as appropriate tools for processing of different materials, such as ceramics and metals, but also for soft, easily damageable materials (biological compounds and polymers). In this work we study the dynamics of laser induced forward transfer (LIFT) with a gap between the donor and the receiver substrates, which is the basis for possible applications that require multilayer depositions with high spatial resolution.
  Journal of optics 11/2010; 12(12):124014. · 1.57 Impact Factor