scholarly journals Biomimetic Coatings Obtained by Combinatorial Laser Technologies

Coatings ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 463
Author(s):  
Emanuel Axente ◽  
Livia Elena Sima ◽  
Felix Sima
Keyword(s):  
Physical Vapor Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Hybrid Coatings ◽  
Laser Evaporation ◽  
Metallic Ions ◽  
Laser Technologies ◽  
Inorganic Coatings ◽  
Deposition Technology ◽  
Biocompatible Coatings

The modification of implant devices with biocompatible coatings has become necessary as a consequence of premature loosening of prosthesis. This is caused mainly by chronic inflammation or allergies that are triggered by implant wear, production of abrasion particles, and/or release of metallic ions from the implantable device surface. Specific to the implant tissue destination, it could require coatings with specific features in order to provide optimal osseointegration. Pulsed laser deposition (PLD) became a well-known physical vapor deposition technology that has been successfully applied to a large variety of biocompatible inorganic coatings for biomedical prosthetic applications. Matrix assisted pulsed laser evaporation (MAPLE) is a PLD-derived technology used for depositions of thin organic material coatings. In an attempt to surpass solvent related difficulties, when different solvents are used for blending various organic materials, combinatorial MAPLE was proposed to grow thin hybrid coatings, assembled in a gradient of composition. We review herein the evolution of the laser technological process and capabilities of growing thin bio-coatings with emphasis on blended or multilayered biomimetic combinations. These can be used either as implant surfaces with enhanced bioactivity for accelerating orthopedic integration and tissue regeneration or combinatorial bio-platforms for cancer research.

scholarly journals In Vivo Assessment of Synthetic and Biological-Derived Calcium Phosphate-Based Coatings Fabricated by Pulsed Laser Deposition: A Review

Coatings ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 99
Author(s):  
Liviu Duta
Keyword(s):  
Calcium Phosphate ◽  
Pulsed Laser Deposition ◽  
Physical Vapor Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Current Status ◽  
Micro Computed Tomography ◽  
Electron Microscopies ◽  
In Vivo Assessment

The aim of this review is to present the state-of-the art achievements reported in the last two decades in the field of pulsed laser deposition (PLD) of biocompatible calcium phosphate (CaP)-based coatings for medical implants, with an emphasis on their in vivo biological performances. There are studies in the dedicated literature on the in vivo testing of CaP-based coatings (especially hydroxyapatite, HA) synthesized by many physical vapor deposition methods, but only a few of them addressed the PLD technique. Therefore, a brief description of the PLD technique, along with some information on the currently used substrates for the synthesis of CaP-based structures, and a short presentation of the advantages of using various animal and human implant models will be provided. For an in-depth in vivo assessment of both synthetic and biological-derived CaP-based PLD coatings, a special attention will be dedicated to the results obtained by standardized and micro-radiographies, (micro) computed tomography and histomorphometry, tomodensitometry, histology, scanning and transmission electron microscopies, and mechanical testing. One main specific result of the in vivo analyzed studies is related to the demonstrated superior osseointegration characteristics of the metallic (generally Ti) implants functionalized with CaP-based coatings when compared to simple (control) Ti ones, which are considered as the “gold standard” for implantological applications. Thus, all such important in vivo outcomes were gathered, compiled and thoroughly discussed both to clearly understand the current status of this research domain, and to be able to advance perspectives of these synthetic and biological-derived CaP coatings for future clinical applications.

Recent progress in high-performance photo-detectors enabled by the pulsed laser deposition technology

2020 ◽  
Vol 8 (15) ◽  
pp. 4988-5014 ◽  
Author(s):  
Bing Wang ◽  
Zhi Bin Zhang ◽  
Shi Peng Zhong ◽  
Zhao Qiang Zheng ◽  
Ping Xu ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Future Development ◽  
High Performance ◽  
Recent Progress ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Development Trends ◽  
Recent Advances ◽  
Photo Detectors ◽  
Deposition Technology

This review introduces recent advances in the materials, fabrication and application of pulsed-laser deposition for high performance photo-detectors from an overall perspective. Challenges and future development trends are also discussed.

scholarly journals The role of particle energy and pulsed particle flux in physical vapor deposition and pulsed–laser deposition

1999 ◽  
Vol 75 (26) ◽  
pp. 4091-4093 ◽  
Author(s):  
Stefan G. Mayr ◽  
Michael Moske ◽  
Konrad Samwer ◽  
Maggie E. Taylor ◽  
Harry A. Atwater
Keyword(s):  
Pulsed Laser Deposition ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Particle Flux ◽  
Pulsed Laser ◽  
Particle Energy ◽  
Laser Deposition

scholarly journals Stearic Acid/Layered Double Hydroxides Composite Thin Films Deposited by Combined Laser Techniques

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4097
Author(s):  
Ruxandra Birjega ◽  
Andreea Matei ◽  
Valentina Marascu ◽  
Angela Vlad ◽  
Maria Daniela Ionita ◽  
...  
Keyword(s):  
Stearic Acid ◽  
Composite Films ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Laser Evaporation ◽  
Time Stability ◽  
Deposition Parameters ◽  
Component Material ◽  
Double Hydroxide ◽  
Double Hydroxides

We report on the investigation of stearic acid-layered double hydroxide (LDH) composite films, with controlled wettability capabilities, deposited by a combined pulsed laser deposition (PLD)-matrix-assisted pulsed laser evaporation (MAPLE) system. Two pulsed lasers working in IR or UV were used for experiments, allowing the use of proper deposition parameters (wavelength, laser fluence, repetition rate) for each organic and inorganic component material. We have studied the time stability and wettability properties of the films and we have seen that the morphology of the surface has a low effect on the wettability of the surfaces. The obtained composite films consist in stearic acid aggregates in LDH structure, exhibiting a shift to hydrophobicity after 36 months of storage.

The Role of Hydrogen in Laser Deposition of Diamond-Like Carbon

1991 ◽  
Vol 236 ◽  
Author(s):  
D. Thebert-Peeler ◽  
P.T. Murray ◽  
L. Petry ◽  
T.W. Haas
Keyword(s):  
Pulsed Laser ◽  
Laser Deposition ◽  
Laser Evaporation ◽  
Diamond Like Carbon ◽  
Ablation Process ◽  
Laser Ablation Process ◽  
Ir Laser ◽  
Temperature Deposition ◽  
Energy Incident

AbstractThin films have been grown on Si (100) substrates by pulsed laser evaporation of graphite using both IR and UV radiation. The character of the resulting film is found to be independent of the presence of H°. Diamond-like films are found to be a result of low (RT) temperature deposition of the higher energy incident particles of the UV (versus IR) laser ablation process.

Fabricating Two-Dimensional Metal Nanocrystal Arrays Using Pulsed-Laser Deposition and Focused Ion-Beam Technologies

2000 ◽  
Vol 636 ◽  
Author(s):  
Richard F. Haglund ◽  
Robert A. Weller ◽  
Cynthia E. Heiner ◽  
Matthew D. McMahon ◽  
Robert H. Magruder ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
High Vacuum ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Silicon Surfaces ◽  
Silver Nanoclusters ◽  
Laser Evaporation ◽  
Si Substrates

AbstractWe describe recent experiments in which we attempted the initial steps for fabricating twodimensional arrays of metal nanocrystals. We use a commercial pulsed-laser deposition system in concert with a focused ion beam to attempt control over both lateral and vertical dimensions at the nanometer length scale. In our experiments, regular arrays of holes typically 80 nm in diameter were drilled in Si substrates using the focused ion beam. Silver atoms were then deposited onto these substrates by pulsed laser evaporation from a metallic target in high vacuum. Under certain conditions of substrate temperature, laser pulse repetition rate, and fluence, small silver nanoclusters form preferentially around the structures previously etched in the silicon surfaces by the focused ion beam.

Production of biologically inert Teflon thin layers on the surface of allergenic metal objects by pulsed laser deposition technology

2003 ◽  
Vol 76 (5) ◽  
pp. 731-735 ◽  
Author(s):  
B. Hopp ◽  
T. Smausz ◽  
N. Kresz ◽  
P.M. Nagy ◽  
A. Juhász ◽  
...  
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Thin Layers ◽  
Laser Deposition ◽  
Deposition Technology

scholarly journals Nanonstructural Analysis of Hydroxyapatite Thin Films Using HRTEM/FIB Techniques

2012 ◽  
Vol 18 (S5) ◽  
pp. 117-118
Author(s):  
E. L. Solla ◽  
B. Rodríguez-González ◽  
I. Pereiro ◽  
C. Rodríguez-Valencia ◽  
B. C. Cores ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Mineral Phase ◽  
High Quality ◽  
Metallic Substrates ◽  
Different Parts ◽  
Biocompatible Coatings

Hydroxyapatite, with a composition that resembles the mineral phase of bone, is often used as a coating of metallic prostheses to improve the adhesion and osseointegration of implants in different parts of the skeleton. Among the available techniques that allow the deposition of this material on metallic substrates, Pulsed Laser Deposition (PLD) is capable of producing high quality and highly biocompatible coatings with excellent final attachment.

scholarly journals Pulsed Laser Deposition of Epitaxial Non-Doped PbTiO3 Thin Films from PbO–TiO2 Mosaic Targets

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 662
Author(s):  
Joe Sakai ◽  
José Manuel Caicedo Roque ◽  
Pablo Vales-Castro ◽  
Jessica Padilla-Pantoja ◽  
Guillaume Sauthier ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Physical Vapor Deposition ◽  
Ferroelectric Properties ◽  
Pulsed Laser ◽  
Self Control ◽  
Laser Deposition ◽  
Pillar Structure ◽  
Pie Chart ◽  
Areal Ratio

PbTiO3 (PTO) suffers from difficulty in preparing high-density robust bulk ceramics, which in turn has been a bottleneck in thin films growth with physical vapor deposition (PVD) methods. In the present work, we prepared non-doped PTO thin films by a pulsed laser deposition (PLD) method with either a single PTO target or a mosaic target consisting of PbO and TiO2 pie-shaped pieces. On the PTO single target, laser irradiation caused selective ablation of Pb, resulting in Ti-rich cone-shaped pillar structure on the surface, whereas the irradiated surface of PbO and TiO2 pieces was smoother. Epitaxial PTO films deposited on SrTiO3 (001) substrates from the pie-chart targets with PbO:TiO2 areal ratio from 3:5 to 5:3 resulted in composition, crystallinity, flatness, and ferroelectric properties almost independent of the areal ratio. The averaged composition of each film was close to stoichiometric, suggesting a compositional self-control mechanism. For growing epitaxial and high-quality non-doped PTO films, a PbO–TiO2 pie-chart target is advantageous in easiness of handling and stable surface structure.

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