The effect of sputtering particle energy on surface characteristics of Mo thin films

Abstract: The most prominent and utilizable platinum-coated copper Oxide nanostructured thin films are prepared using the SILAR method. Their structural properties have been studied using X-ray diffraction (XRD) and Raman spectroscopy. XRD pattern reveals the phase purity and crystallinity of CuO nanostructures. The average grain size estimated from XRD gives diameters in the range of 14 - 27 nm. Raman spectra explain the structural information of CuO and Pt/CuO nanostructured thin films, in which the peaks observed at 328 cm-1, 609.32 cm-1 and 1141.77 cm-1 are the different phonon modes of CuO. The peak at 2136 cm-1 provides strong evidence for the formation of platinum on CuO nanostructures. The SEM micrograph confirms the floral morphology, which is composed of nano petals. From the observed morphology, it is observed that the deposited thin films such as CuO and Pt/CuO will give interesting applications to our society by being self-cleaning agents, photocatalysts, semiconductor devices, optical fibers, … etc. Keywords: CuO, Pt/CuO, Structural analysis, SILAR, Crystallinity.

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Crystal Structure and Surface Characteristics of ZnO Thin Films Deposited by Using RF Magnetron Sputtering

New Physics Sae Mulli ◽

10.3938/npsm.68.724 ◽

2018 ◽

Vol 68 (7) ◽

pp. 724-730

Author(s):

Bong Ju LEE ◽

Myung Bok LEE*

Keyword(s):

Crystal Structure ◽

Thin Films ◽

Magnetron Sputtering ◽

Surface Characteristics ◽

Rf Magnetron Sputtering ◽

Zno Thin Films

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WO3:Mo and WO3:Ti Thin Films Deposited by Spray Pyrolysis: The Influence of Metallic Concentration on Physical Properties: An Electron Microscopy and Atomic Force Study

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.286.49 ◽

2019 ◽

Vol 286 ◽

pp. 49-63

Author(s):

Dwight Acosta ◽

Francisco Hernández ◽

Alejandra López-Suárez ◽

Carlos Magaña

Keyword(s):

Electron Microscopy ◽

Thin Films ◽

Ultra Violet ◽

Surface Characteristics ◽

Structural Defects ◽

Force Microscopy ◽

Glass Substrates ◽

Atomic Force ◽

Transmission Electron ◽

Resolution Electron

WO3:Mo and WO3:Ti thin films have been deposited on FTO/Glass substrates by the pulsed chemical spray technique at a substrate temperature of Ts= 450°C. The influence of Mo and Ti doping on the structural, electrical, and optical behavior of WO3thin films, has been studied by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Atomic Force Microscopy (AFM), Ultra Violet and Visible Spectrometry (UV-VIS), and Surface Conductivity Methods (Four Points). Doped WO3films presents similar polycrystalline structures but with noticeable modifications in surface configurations at micrometric and nanometric levels, as the Mo and Ti concentration is systematically increased in the starting sprayed solution. From processed High-Resolution Electron Micrographs (HREM), a low density of structural defects was found on pure and doped WO3grains. This lead to conclude that variations in films surface characteristics are mainly related with metallic doping concentrations which in turn, have noticeable influence in electrical and optical behaviors reported in this work.

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Femtosecond Laser Fabrication of Engineered Functional Surfaces based on Biodegradable Polymer and Biopolymer/Ceramic Composite Thin Films

Polymers ◽

10.3390/polym11020378 ◽

2019 ◽

Vol 11 (2) ◽

pp. 378 ◽

Cited By ~ 4

Author(s):

Albena Daskalova ◽

Irina Bliznakova ◽

Liliya Angelova ◽

Anton Trifonov ◽

Heidi Declercq ◽

...

Keyword(s):

Thin Films ◽

Surface Roughness ◽

Femtosecond Laser ◽

Surface Functionalization ◽

Biodegradable Polymer ◽

Photoelectron Spectroscopy ◽

Laser Energy ◽

Surface Characteristics ◽

Laser Pulses ◽

Xrd Analysis

Surface functionalization introduced by precisely-defined surface structures depended on the surface texture and quality. Laser treatment is an advanced, non-contact technique for improving the biomaterials surface characteristics. In this study, femtosecond laser modification was applied to fabricate diverse structures on biodegradable polymer thin films and their ceramic blends. The influences of key laser processing parameters like laser energy and a number of applied laser pulses (N) over laser-treated surfaces were investigated. The modification of surface roughness was determined by atomic force microscopy (AFM). The surface roughness (Rrms) increased from approximately 0.5 to nearly 3 µm. The roughness changed with increasing laser energy and a number of applied laser pulses (N). The induced morphologies with different laser parameters were compared via Scanning electron microscopy (SEM) and confocal microscopy analysis. The chemical composition of exposed surfaces was examined by FTIR, X-ray photoelectron spectroscopy (XPS), and XRD analysis. This work illustrates the capacity of the laser microstructuring method for surface functionalization with possible applications in improvement of cellular attachment and orientation. Cells exhibited an extended shape along laser-modified surface zones compared to non-structured areas and demonstrated parallel alignment to the created structures. We examined laser-material interaction, microstructural outgrowth, and surface-treatment effect. By comparing the experimental results, it can be summarized that considerable processing quality can be obtained with femtosecond laser structuring.

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Surface Characteristics of Epitaxial Sr2FeMoO6 Thin Films

Journal of the Magnetics Society of Japan ◽

10.3379/jmsjmag.30.374 ◽

2006 ◽

Vol 30 (3) ◽

pp. 374-377 ◽

Cited By ~ 7

Author(s):

N. Koduka ◽

Y. Takahashi ◽

K. Imaeda ◽

H. Asano ◽

M. Matsui

Keyword(s):

Thin Films ◽

Surface Characteristics

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Effect of SiO2 Particle Size on Optical Properties of TiO2-SiO2 Nanocomposite Thin Films

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.684.67 ◽

2013 ◽

Vol 684 ◽

pp. 67-71 ◽

Cited By ~ 1

Author(s):

Je Hun Kim ◽

Hyun Goo Choi ◽

Ting Zhang ◽

Chul Han Kwon ◽

Young Ho Kim ◽

...

Keyword(s):

Crystal Structure ◽

Thin Films ◽

Particle Size ◽

Uv Light ◽

Surface Characteristics ◽

Dip Coating ◽

Colloidal Solutions ◽

Nano Composite ◽

Glass Substrates ◽

Dip Coating Technique

TiO2-SiO2thin film system is known to be very attractive to use for photocatalytic and display applications. In this study, TiO2-SiO2nano-composite solutions were prepared by adding colloidal solutions consisted of different SiO2nano-particle sizes (7-50 nm) into TiO2powder-dispersed solutions. TiO2-SiO2thin films on glass substrates were fabricated by the dip-coating technique and their crystal structure, surface morphology and photocatalytic properties were investigated as a function of SiO2particle size. While the SiO2particle size had little influence on the crystal structure of thin films, the photocatalytic activity and anti-reflectance (anti-glare) characteristics were found to be dependent on the SiO2particle size. This result could be explained in terms of surface characteristics and the order of degradation of methylene blue under UV light irradiation.

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Surface Characteristics, Etching Behaviors and Chemicalmechanical Polishing of Aluminum Alloy thin Films

MRS Proceedings ◽

10.1557/proc-477-125 ◽

1997 ◽

Vol 477 ◽

Cited By ~ 2

Author(s):

Wei-Tsu Tseng ◽

Jun Wu ◽

Yee-Shyi Chang

Keyword(s):

Thin Films ◽

Alloy Composition ◽

Surface Characteristics ◽

Corrosion Current ◽

Native Oxide ◽

Al Alloy ◽

Abrasive Particles ◽

Mechanical Abrasion ◽

Underlying Mechanisms ◽

Auxiliary Role

ABSTRACTEtching behaviors of various Al alloy thin films in H2O2-based acidic etchants are investigated in this study. The pH and H2O2 content in the etchant are varied in order to simulate the case where Al thin films are subject to chemical-mechanical polishing (CMP) using slurries of different compositions. Corrosion current and thickness of the native oxide on pure-Al, AI-1%Si, Al-0.5%Cu, AI-1%Si-0.5%Cu, and AI-1%Cu thin films are determined from Tafel and ESCA analyses respectively. Comparisons between etch rate and CMP polish rate data suggest that Al-CMP removal process depends strongly on the chemical reactions by the oxidizer (slurry). Mechanical abrasion by the abrasive particles plays only an auxiliary role during Al CMP. In addition, alloy composition (% Si and % Cu) influence both etching and polishing behaviors to a great extent. The underlying mechanisms for etching and polishing are discussed.

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Behavior of Block Copolymers in Thin Films

MRS Bulletin ◽

10.1557/s0883769400061479 ◽

1989 ◽

Vol 14 (10) ◽

pp. 33-37 ◽

Cited By ~ 6

Author(s):

T.P. Russell ◽

V.R. Deline ◽

V.S. Wakharkar ◽

G. Coulon

Keyword(s):

Thin Films ◽

Phase Separation ◽

Automobile Industry ◽

Polymeric Materials ◽

Surface Characteristics ◽

Specific Interactions ◽

New Material ◽

Microelectronics Industry ◽

The Many ◽

The Individual

The uses of polymeric materials in today's world are vast. Polymers are finding applications in the microelectronics industry as dielectric insulators and photoresists, in the aerospace and automobile industry as lightweight substitutes for metals, and in biotechnology as replacement components for bone, heart, and other organs. These are just a few of the many end uses of polymers.Often, a polymer may have a particular, desirable property but processing of the polymer is difficult or the polymer's surface characteristics are undesirable. To circumvent such shortcomings there are several options. The first is to synthesize a new material, which is quite costly and time consuming. Alternatively, two polymers with complimentary properties can be mixed. Unfortunately, most polymer pairs are immiscible unless there are specific interactions (e.g., hydrogen bonding) between the two components. Consequently, coarse phase separation is often observed, leading to an ill-defined material. Finally, two chemically distinct homopolymers can be joined together at one point, forming a block copolymer. While phase separation may occur, the scale of the domains is restricted to the sizes of the individual homopolymers, which is typically on the tens of nanometers scale. The added advantage of this approach is that the size of the different blocks can be altered, varying the concentration of the different components. For copolymers that “microphase” separate, this variation in composition leads to a variation of the morphology of the microdomains ranging from spherical to cylindrical to lamellar.

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