Reduction of Droplet Density onto Hydroxyapatite Films Grown by Pulsed Laser Deposition from Concave-Shaped Targets

1998 ◽  
Vol 526 ◽  
Author(s):  
Valentin Craciun
Keyword(s):  
Plasma Plume ◽  
Pulsed Laser ◽  
The Other ◽  
Laser Deposition ◽  
Laser Spot ◽  
Deposition Method ◽  
Cone Axis ◽  
Droplet Density ◽  
Scanning Electron ◽  
System Axis

AbstractA new deposition method, inspired from the crossed fluxes technique, which employs a concave, conic-shaped target is presented here. The rectangular excimer laser beam used for ablation was focused so that the middle of the spot laid exactly on the tip of the concave-shaped target. Each half of the laser spot created a plasma plume on one side of the concave target which was the symmetrical image across the cone axis of that created by the other half of the laser spot. The heavy droplets passed through the plasma interaction region without collisions and, maintaining their direction of motion, moved away from the system axis. The majority of the ablated ions and atoms emitted from one side of the spot collided with those emitted from the other side and, because of the symmetry of the concave-shaped target, acquired a velocity component along the system axis, moving towards the substrate. Scanning electron microscopy investigations showed a significant reduction of droplet density onto the surface of hydroxyapatite layers grown from such concave-shaped targets as compared to films grown from the usual cylindrical targets.

Pulsed Laser Deposition of Superconductor/Ferromagnetic YBa2Cu3Oy/SrTiO3/La2/3Sr1/3MnO3 Heterostructures

1999 ◽  
Vol 574 ◽  
Author(s):  
V. Trtík ◽  
F. Sánchez ◽  
C. Ferrater ◽  
M. Varela ◽  
L. Fábrega ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Complete Analysis ◽  
Force Microscopy ◽  
Atomic Force ◽  
Strip Geometry ◽  
Droplet Density ◽  
Scanning Electron ◽  
Deposition Conditions

AbstractYBa2Cu3Oy/SrTiO3/La2/3Sr1/3MnO3 heterostructures have been deposited on LaAlO3(001) and SrTiO3(001) substrates by pulsed laser deposition. First, the influence of deposition conditions on crystallinity and morphology of single LSMO films was examined. Results were used for preparation of heterostructures in tri-layer and cross-strip geometry. Cross-strip geometry was defined by direct shadow mask patterning. Different characterization techniques have been used to determine and correlate the heterostructure properties. A complete analysis of the crystal structure has been carried out with a four-circle difractometer. Morphology has been studied by scanning electron microscopy and atomic force microscopy in order to determine surface roughness and droplet density. Basic electrical properties of films have been determined.

Development of a Carbon Nanotube-Based Nanoactuator for a Nano-Conveyer System

2008 ◽  
Author(s):  
Onejae Sul ◽  
Eui-Hyeok Yang
Keyword(s):  
Carbon Nanotube ◽  
Metal Film ◽  
Pulsed Laser ◽  
Thin Metal Film ◽  
Laser Deposition ◽  
Deposition Method ◽  
Bending Performance ◽  
Thermal Bending ◽  
Conveyer System ◽  
Scanning Electron

Multi-wall carbon nanotube (MWNT)-based bimorph nanoactuators were synthesized and characterized. A thin metal film was deposited on the sidewall of MWNTs using a pulsed laser deposition method to form a bimorph nanostructure. The preliminary actuation was demonstrated using a fabricated bimorph MWNT. Thermal bending performance of the nanoactuator on a thermal stage will be further investigated by using a scanning electron microscope.

Influence of the Shape and Size of ahe Laser Spot on the Spatial Distribution of the Plasma Plume

1995 ◽  
Vol 397 ◽  
Author(s):  
A. Mele ◽  
A. Giardini Guidont ◽  
R. Kelly ◽  
A. Miotello ◽  
S. Orlando
Keyword(s):  
Plasma Plume ◽  
Pulsed Laser ◽  
Ccd Camera ◽  
Laser Deposition ◽  
Laser Spot ◽  
Plume Dynamics ◽  
Gas Dynamic ◽  
High Intensity Laser ◽  
Intensity Laser ◽  
Deposit Characteristics

ABSTRACTPulsed laser deposition may be accomplished by irradiating a target with a high intensity laser pulse. The flux of particles moving from the target to the substrate obeys gas-dynamic laws when the density of the emitted particles exceeds ∼1 monolayer/(10 ns). The angular distribution of the plume, which depends on various factors, will strongly affect the deposit characteristics. It has been found that an intensified CCD camera can be successfully used to analyze laterally in two orthogonal directions the profile of the expanding plume. A marked influence of laser spot dimension and shape on plume dynamics is observed for laser ablation of a number of materials such as metals, semiconductors and high Tc superconductors.

scholarly journals Deposition pressure-induced microstructure control and plasmonic property tuning in hybrid ZnO-AgxAu1-x thin films

2021 ◽  
Author(s):  
Robynne Lynne PALDI ◽  
Xing Sun ◽  
Xin Li Phuah ◽  
Juanjuan Lu ◽  
Xinghang Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Deposition Method ◽  
Hybrid Films ◽  
Deposition Pressure ◽  
Plasmonic Metamaterials ◽  
Film Form

Self-assembled oxide-metallic alloyed nanopillars as hybrid plasmonic metamaterials (e.g., ZnO-AgxAu1-x) in a thin film form are grown using a pulsed laser deposition method. The hybrid films were demonstrated to be...

Pulsed laser deposition method-CeO2 buffer layer for YBCO coated conductor

2003 ◽  
Vol 392-396 ◽  
pp. 796-800 ◽  
Author(s):  
Takemi Muroga ◽  
Hiroyuki Iwai ◽  
Yutaka Yamada ◽  
Teruo Izumi ◽  
Yuh Shiohara ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Buffer Layer ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Coated Conductor ◽  
Deposition Method ◽  
Ybco Coated Conductor ◽  
Ceo2 Buffer Layer

scholarly journals Ultra Thin Al-doped Transparent Conducting Zinc Oxide Films Fabricated by Pulsed Laser Deposition Method

2008 ◽  
Vol 51 (5) ◽  
pp. 323-325 ◽  
Author(s):  
Masataka NAKAMURA ◽  
Kimihiro IKUTA ◽  
Takanori AOKI ◽  
Akio SUZUKI ◽  
Tatsuhiko MATSUSHITA ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Pulsed Laser Deposition ◽  
Oxide Films ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Deposition Method ◽  
Zinc Oxide Films ◽  
Transparent Conducting
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