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51.
Anna Paola Caricato Armando Luches 《Applied Physics A: Materials Science & Processing》2011,105(3):565-582
The matrix-assisted pulsed laser evaporation (MAPLE) technique offers an efficient mechanism to transfer soft materials from
the condensed to the vapor phase, preserving the versatility, ease of use and high deposition rates of the pulsed laser deposition
(PLD) technique. The materials of interest (polymers, biological cells, proteins, …) are diluted in a volatile solvent. Then
the solution is frozen and irradiated with a pulsed laser beam. Here, important results of MAPLE deposition of polymer, biomaterials
and nanoparticle films are summarized. Finally, the MAPLE mechanism is discussed. A review of experimental and theoretical
works points out that the simple model of individual molecule evaporation must be abandoned. Solute concentration, solubility,
evaporation temperature of solvents, laser pulse power density and laser penetration depth emerge as important parameters
to explain the morphology of the MAPLE-deposited films. 相似文献
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D. Valerini A. P. Caricato M. Lomascolo F. Romano A. Taurino T. Tunno M. Martino 《Applied Physics A: Materials Science & Processing》2008,93(3):729-733
We report the use of PLD to grow different ZnO nanostructures. Very different film morphologies have been observed using different
laser wavelengths to ablate the target. The influence of substrate temperature and oxygen background pressure on the film
morphology has been investigated too. Smooth and rough films, hexagonal pyramids and columns have been obtained by using a
KrF excimer laser (248 nm) for the target ablation, while hexagonal hierarchical structures and pencils have been obtained
by using ArF (193 nm). Photoluminescence and X-ray diffraction measurements revealed the good quality of the samples, in particular
of those deposited using the ArF laser beam. 相似文献