The effect of the matrix on film properties in matrix-assisted pulsed laser evaporation

2002 ◽  
Vol 91 (4) ◽  
pp. 2055-2058 ◽  
Author(s):  
D. M. Bubb ◽  
P. K. Wu ◽  
J. S. Horwitz ◽  
J. H. Callahan ◽  
M. Galicia ◽  
...  
Keyword(s):  
Pulsed Laser ◽  
Laser Evaporation ◽  
Film Properties ◽  
The Matrix

Processing of functional polymers and organic thin films by the matrix-assisted pulsed laser evaporation (MAPLE) technique

2002 ◽  
Vol 186 (1-4) ◽  
pp. 408-415 ◽  
Author(s):  
A. Piqué ◽  
P. Wu ◽  
B.R. Ringeisen ◽  
D.M. Bubb ◽  
J.S. Melinger ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser ◽  
Organic Thin Films ◽  
Functional Polymers ◽  
Laser Evaporation ◽  
The Matrix

Growth of organic thin films by the matrix assisted pulsed laser evaporation (MAPLE) technique

1999 ◽  
Vol 355-356 ◽  
pp. 536-541 ◽  
Author(s):  
A. Piqué ◽  
R.A. McGill ◽  
D.B. Chrisey ◽  
D. Leonhardt ◽  
T.E. Mslna ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser ◽  
Organic Thin Films ◽  
Laser Evaporation ◽  
The Matrix

Deposition Of Nanotubes and Nanotube Composites Using Matrix-Assisted Pulsed Laser Evaporation

2000 ◽  
Vol 617 ◽  
Author(s):  
P. K. Wu ◽  
J. Fitz-Gerald ◽  
A. Pique ◽  
D.B. Chrisey ◽  
R.A. McGill
Keyword(s):  
Composite Films ◽  
Pulsed Laser ◽  
Target Material ◽  
Deposition Process ◽  
Vacuum System ◽  
Laser Evaporation ◽  
Naval Research ◽  
Film Material ◽  
The Matrix ◽  
Nanotube Composites

AbstractUsing the Matrix-Assisted Pulsed Laser Evaporation (MAPLE) process developed at the Naval Research Laboratory, carbon nanotubes and carbon nanotube composite thin films have been successfully fabricated. This process involves dissolving or suspending the film material in a volatile solvent, freezing the mixture to create a solid target, and using a low fluence pulsed laser to evaporate the target for deposition inside a vacuum system. The collective action of the evaporating solvent desorbs the polymer/nanotube composite from the target. The volatile solvent is then pumped away leaving the film material on the substrate. By using this technique singlewall- nanotubes (SWN) have been transferred from the target to the substrate. The SWN sustain no observable damage during the deposition process. Using SWN in combination with polymers as the target material, SWN/polystyrene and SWN/polyethylene glycol composite films were made. These films can be deposited on a variety of substrates, e.g., Si, glass, plastic, and metal, using the same target and deposition conditions. SEM micrographs show that the SWN were uniformly distributed in the film. Using a simple contact mask, SWN composite films 20 um diameter patterns can be produced.

Growth of TiO2 Thin Films by Pulsed Laser Evaporation

1990 ◽  
Vol 191 ◽  
Author(s):  
Ming Y. Chen ◽  
P. Terrence Murray
Keyword(s):  
Thin Films ◽  
Photoelectron Spectroscopy ◽  
Pulsed Laser ◽  
Grazing Incidence ◽  
Ex Situ ◽  
Laser Evaporation ◽  
Tio2 Thin Films ◽  
Film Properties ◽  
X Ray

ABSTRACTThin films of TiO2 have been grown by pulsed laser evaporation. The films were analyzed by in-situ Auger and x-ray photoelectron spectroscopy as well as by ex-situ grazing incidence xray diffraction. Films grown at room temperature and at a pressure of 5×10minus; 3 Torr were oxygen deficient. Films grown at 500°C and higher were found to be stoichiometric TiO2.The effect of substrate temperature and evaporation conditions on film properties will be discussed.

scholarly journals Alkali-deficiency driven charged out-of-phase boundaries for giant electromechanical response

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Haijun Wu ◽  
Shoucong Ning ◽  
Moaz Waqar ◽  
Huajun Liu ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Temperature Stability ◽  
Epitaxial Films ◽  
Polarization Rotation ◽  
Phase Boundaries ◽  
Film Properties ◽  
New Strategy ◽  
The Matrix ◽  
Opposing Effects ◽  
Severe Deterioration

AbstractTraditional strategies for improving piezoelectric properties have focused on phase boundary engineering through complex chemical alloying and phase control. Although they have been successfully employed in bulk materials, they have not been effective in thin films due to the severe deterioration in epitaxy, which is critical to film properties. Contending with the opposing effects of alloying and epitaxy in thin films has been a long-standing issue. Herein we demonstrate a new strategy in alkali niobate epitaxial films, utilizing alkali vacancies without alloying to form nanopillars enclosed with out-of-phase boundaries that can give rise to a giant electromechanical response. Both atomically resolved polarization mapping and phase field simulations show that the boundaries are strained and charged, manifesting as head-head and tail-tail polarization bound charges. Such charged boundaries produce a giant local depolarization field, which facilitates a steady polarization rotation between the matrix and nanopillars. The local elastic strain and charge manipulation at out-of-phase boundaries, demonstrated here, can be used as an effective pathway to obtain large electromechanical response with good temperature stability in similar perovskite oxides.

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