Antibacterial Surfaces, Thin Films, and Nanostructured Coatings

2021 ◽  
Keyword(s):  
Thin Films ◽  
Nanostructured Coatings ◽  
Antibacterial Surfaces

scholarly journals Antibacterial Surfaces, Thin Films, and Nanostructured Coatings

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 556
Author(s):  
Daniele Valerini
Keyword(s):  
Thin Films ◽  
Medical Devices ◽  
Nanostructured Coatings ◽  
Antibacterial Surfaces

Antibacterial surfaces can play a key role in a great number of everyday applications, spanning from biomedical purposes (medical devices, protection equipment, surgery tools, human implants, etc [...]

Synthesis, Properties, and Applications of Special Substrates Coated by Titanium Dioxide Nanostructured Thin Films via Sol-Gel Process

2011 ◽  
pp. 246-279
Author(s):  
Hamid Dadvar ◽  
Farhad E. Ghodsi ◽  
Saeed Dadvar
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Sol Gel ◽  
Precursor Solution ◽  
Tio2 Thin Films ◽  
Simple Method ◽  
Nanostructured Thin Films ◽  
Precursor Material ◽  
Synthesis Properties ◽  
Antibacterial Surfaces

In this chapter, the sol-gel made titanium dioxide nanostructured thin films deposited on special substrates such as glasses, mica, steels, textiles, fibers, and other organic/inorganic substrates were reviewed. Through this review, several distinctive properties such as optical, electrical, photocatalytic, morphological, and mechanical properties of TiO2 nanostructured thin films were described. Also, a wide range of practical application of TiO2 nanostructured thin films such as dye-sensitised solar cells, optical coatings, humidity and gas sensors, selfcleaning, dielectric, and antibacterial surfaces were discussed in details. Dip and spin coating techniques were demonstrated as suitable methods for deposition of thin films. It has been shown that properties of such films can be affected by type of coating technique, stabilizer, precursor material, solvents, pH and viscosity of precursor solution, aging, and etc. Finally, Successive Interference Fringes Method (SIFM) was presented as a simple method for the determination of optical constants and thickness of TiO2 thin films from single transmission measurements.

Synthesis, Properties, and Applications of Special Substrates Coated by Titanium Dioxide Nanostructured Thin Films via Sol-Gel Process

2014 ◽  
pp. 218-250
Author(s):  
Hamid Dadvar ◽  
Farhad E. Ghodsi ◽  
Saeed Dadvar
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Sol Gel ◽  
Precursor Solution ◽  
Tio2 Thin Films ◽  
Simple Method ◽  
Nanostructured Thin Films ◽  
Precursor Material ◽  
Synthesis Properties ◽  
Antibacterial Surfaces

In this chapter, the sol-gel made titanium dioxide nanostructured thin films deposited on special substrates such as glasses, mica, steels, textiles, fibers, and other organic/inorganic substrates were reviewed. Through this review, several distinctive properties such as optical, electrical, photocatalytic, morphological, and mechanical properties of TiO2 nanostructured thin films were described. Also, a wide range of practical application of TiO2 nanostructured thin films such as dye-sensitised solar cells, optical coatings, humidity and gas sensors, selfcleaning, dielectric, and antibacterial surfaces were discussed in details. Dip and spin coating techniques were demonstrated as suitable methods for deposition of thin films. It has been shown that properties of such films can be affected by type of coating technique, stabilizer, precursor material, solvents, pH and viscosity of precursor solution, aging, and etc. Finally, Successive Interference Fringes Method (SIFM) was presented as a simple method for the determination of optical constants and thickness of TiO2 thin films from single transmission measurements.

Robust bio-inspired antibacterial surfaces based on the covalent binding of peptides on functional atmospheric plasma thin films

2014 ◽  
Vol 2 (32) ◽  
pp. 5168 ◽  
Author(s):  
Rodolphe Mauchauffé ◽  
Maryline Moreno-Couranjou ◽  
Nicolas D. Boscher ◽  
Cécile Van De Weerdt ◽  
Anne-Sophie Duwez ◽  
...  
Keyword(s):  
Thin Films ◽  
Covalent Binding ◽  
Atmospheric Plasma ◽  
Antibacterial Surfaces

scholarly journals Influence of Extracellular Mimicked Hierarchical Nano-Micro-Topography on the Bacteria/Abiotic Interface

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 828 ◽  
Author(s):  
Sílvia Ferreira ◽  
Ana P. Piedade
Keyword(s):  
Thin Films ◽  
Surface Chemistry ◽  
Resistant Bacteria ◽  
Bacterial Strains ◽  
Average Roughness ◽  
Topographic Features ◽  
Deposition Parameters ◽  
Topographical Cues ◽  
Antibacterial Surfaces ◽  
Micro Topography

The study of interfaces between engineered surfaces and prokaryotic cells is a subject whose actual relevance has been reinforced by the current outbreaks due to unknown viruses and antibiotic-resistant bacteria. Studies aiming at the development of antibacterial surfaces are based on two pillars: surface chemistry or topographical cues. This work reports the study of only the topographic aspect by the development of thin films of polyamide, which present attractive surface chemistry for bacterial adhesion. The same chemistry with only nano- or hierarchical nano- and micro-topography that mimics the extracellular matrix is obtained by sputter-depositing the thin films onto Si and polydimethylsiloxane (PDMS), respectively. The surface average roughness of the Si-modified surfaces was around 1 nm, while the hierarchical topography presented values from 750 to 1000 nm, with wavelengths and amplitudes ranging from 15–30 µm and 1–3 µm, respectively, depending on the deposition parameters. The surface topography, wettability, surface charge, and mechanical properties were determined and related to interface performance with two Gram+ and two Gram- bacterial strains. The overall results show that surfaces with only nano-topographic features present less density of bacteria, regardless of their cell wall composition or cell shape, if the appropriate surface chemistry is present.

Preparation of antibacterial surfaces by hyperthermal hydrogen induced cross-linking of polymer thin films

2012 ◽  
Vol 22 (11) ◽  
pp. 4881 ◽  
Author(s):  
Solmaz Karamdoust ◽  
Binyu Yu ◽  
Colin V. Bonduelle ◽  
Yu Liu ◽  
Greg Davidson ◽  
...  
Keyword(s):  
Thin Films ◽  
Polymer Thin Films ◽  
Cross Linking ◽  
Antibacterial Surfaces

The study of interfacial reactions of nickel thin films on GaAs

1983 ◽  
Vol 41 ◽  
pp. 156-157
Author(s):  
L.J. Chen ◽  
Y.F. Hsieh
Keyword(s):  
Thin Films ◽  
Integrated Circuits ◽  
Interfacial Reactions ◽  
Metal Contacts ◽  
Nickel Thin Films ◽  
Thin Foils ◽  
The Status ◽  
Si Doped ◽  
Electron Microscopes

One measure of the maturity of a device technology is the ease and reliability of applying contact metallurgy. Compared to metal contact of silicon, the status of GaAs metallization is still at its primitive stage. With the advent of GaAs MESFET and integrated circuits, very stringent requirements were placed on their metal contacts. During the past few years, extensive researches have been conducted in the area of Au-Ge-Ni in order to lower contact resistances and improve uniformity. In this paper, we report the results of TEM study of interfacial reactions between Ni and GaAs as part of the attempt to understand the role of nickel in Au-Ge-Ni contact of GaAs.N-type, Si-doped, (001) oriented GaAs wafers, 15 mil in thickness, were grown by gradient-freeze method. Nickel thin films, 300Å in thickness, were e-gun deposited on GaAs wafers. The samples were then annealed in dry N2 in a 3-zone diffusion furnace at temperatures 200°C - 600°C for 5-180 minutes. Thin foils for TEM examinations were prepared by chemical polishing from the GaA.s side. TEM investigations were performed with JE0L- 100B and JE0L-200CX electron microscopes.

Studies on Water in the Hydration Chamber of a Modified Electron Microscope

1970 ◽  
Vol 28 ◽  
pp. 544-545
Author(s):  
R. C. Moretz ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electron Microscope ◽  
Steady State ◽  
Room Temperature ◽  
Small Mass ◽  
Equilibrium Pressure ◽  
Biological Objects ◽  
Mechanical Pump ◽  
Differential Pumping

Use of the electron microscope to examine wet objects is possible due to the small mass thickness of the equilibrium pressure of water vapor at room temperature. Previous attempts to examine hydrated biological objects and water itself used a chamber consisting of two small apertures sealed by two thin films. Extensive work in our laboratory showed that such films have an 80% failure rate when wet. Using the principle of differential pumping of the microscope column, we can use open apertures in place of thin film windows.Fig. 1 shows the modified Siemens la specimen chamber with the connections to the water supply and the auxiliary pumping station. A mechanical pump is connected to the vapor supply via a 100μ aperture to maintain steady-state conditions.

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