Pulsed Laser Deposition of Diamond-like Carbon Films PDF Download

Author: Deborah Lynn Thebert-Peeler
Publisher:
ISBN:
Category : Crystal growth
Languages : en
Pages : 234

View

Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 30

View

Book Description
We have deposited hydrogen-free diamond-like amorphous carbon (amorphous diamond) films by ArF (193 nm) pulsed laser ablation of graphite. The deposition process is performed with the laser power density of only 5x10(8) W/cm2 at room temperature without any auxiliary energy source incorporation. The resulting films possess remarkable physical, optical and mechanical properties which are close to those of diamond and distinct from the graphite target used. The films have a mechanical hardness up to 38 GPa, an optical energy band gap of 2.6 eV and excellent thermal stability. Analysis of electron energy loss spectroscopy reveals the domination of diamond-type tetrahedral bonding structure in the films with the Sp3 bond fraction over 95%. Compared to other reported results of pulsed laser deposited diamond-like carbon films, our experimental results confirm that the laser wavelength or photon energy plays a crucial role in controlling the properties of the pulsed laser deposited diamond-like carbon films.

Author: Christophe Donnet
Publisher: Springer Science & Business Media
ISBN: 0387498915
Category : Technology & Engineering
Languages : en
Pages : 673

View

Book Description
This book highlights some of the most important structural, chemical, mechanical and tribological characteristics of DLC films. It is particularly dedicated to the fundamental tribological issues that impact the performance and durability of these coatings. The book provides reliable and up-to-date information on available industrial DLC coatings and includes clear definitions and descriptions of various DLC films and their properties.

Author: Fan Qian
Publisher:
ISBN:
Category :
Languages : en
Pages : 194

View

Book Description

Author: Jason Dirk Haverkamp
Publisher:
ISBN:
Category :
Languages : en
Pages : 118

View

Book Description
Keywords: pulsed laser deposition, diamond-like carbon, laser ablation, laser plasma, magnetic field, nanoparticles.

Author: Robert Eason
Publisher: John Wiley & Sons
ISBN: 0470052112
Category : Science
Languages : en
Pages : 754

View

Book Description
Edited by major contributors to the field, this text summarizes current or newly emerging pulsed laser deposition application areas. It spans the field of optical devices, electronic materials, sensors and actuators, biomaterials, and organic polymers. Every scientist, technologist and development engineer who has a need to grow and pattern, to apply and use thin film materials will regard this book as a must-have resource.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description

Author: Yuto S. Tanaka
Publisher: Nova Biomedical Books
ISBN: 9781613247914
Category : Diamond thin films
Languages : en
Pages : 0

View

Book Description
This book presents current research from across the globe in the study of diamond-like carbon films. Topics discussed include the peculiarities of ion-beam synthesis of carbon-based phases; electron field emission properties of non-metal and metal doped diamond like carbon; internal stress and its reduction of hydrogenated diamond-like carbon thin films deposited by plasma CVD methods; incorporating crystalline diamond particles in diamond-like carbon films to improve their properties and diamond-like carbon films applied as an alignment layer for LCDs.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description
This dissertation focuses on the analysis of the plasma plume created in pulsed laser ablation thin film deposition of diamond-like carbon and the correlation of the characteristics of the plume to thin film properties. Diamond-like carbon films were deposited on silicon substrates by pulsed laser deposition at different laser energy densities. Important plasma parameters, such as ion kinetic energy, ion density, and electron temperature are altered by changing the laser energy density. These plasma properties determine the coordination states of carbon atoms within the deposited film. The diamond-like and graphite-like coordination states of carbon, termed sp3 and sp2, respectively, determine film properties such as hardness, optical properties, and electronic properties. The sp3 fraction of the diamond-like carbon was directly determined through electron energy loss spectroscopy. The microstructure of the sp2 coordinated carbon was determined with visible Raman spectroscopy. Plasma properties were analyzed by quadruple Langmuir probes and mass loss measurements. Langmuir probe measurements indicate that ion density, ion flow speed, and electron temperature increase with laser energy density. Mass loss measurements show that the plume has an ionization fraction between 5 and 10 percent. Therefore, neutral particles have a significant role in film growth. Current models for the growth of diamond-like carbon films are reviewed. A deposition model based on electronic excitation is proposed. The probability of surpassing the energy barrier between sp2 and sp3 coordination is increased via an effective reduction of the activation barrier due to electronic excitation. The energy for electronic excitation is supplied by electron and photon interactions with ions and neutrals in the plume, as well as recombination of ions at the surface. To investigate the effect of magnetic fields on plasma properties and film growth, a strong magnetic field.