The effects of surface texture and chemical modification on the hydrophobicity and oleophobicity of the resulting surfaces have been systematically investigated. The surface textures were created by the conventional photolithographic technique on Silicon wafer. This [...]
A stably superhydrophilic coating is required on composite and metal bipolar plates to manage byproduct liquid water and, in turn, to enable good PEM fuel cell performace under low power vehicle operating conditions. Silica-based coatings, [...]
In this paper, we present static and dynamic wetting interactions of water droplets on a variety of superhydrophobic surfaces. For sessile droplets, wetting states were determined by measuring contact angles and comparing them to that [...]
A class of polymer nanocomposites consisting of all biocompatible components has been developed for large area coating applications. The coatings are made possible by solution blending of poly (vinylidine fluoride) (PVDF) with polymerized ethyl cyanoacrylate. [...]
The wetting properties of surfaces are fundamental properties greatly influencing their interaction with the environment. Self-cleaning, bacteria-resistant, and anti-fogging surfaces are feasible by depositing either super-hydrophobic or super-hydrophilic coatings and will have great impact on [...]
Superhydrophobic and superhydrophilic surfaces are generally made by modifying the surface with chemistry and introducing roughness or patterns on surfaces. The processes are generally complex and time-consuming. In this paper, we introduce a simple and [...]
Titanium dioxide is probably the most efficient among the known photocatalysts, and undoubtedly the most studied one. An appealing route to tune obtain TiO2 films morphology and structure is to exploit the anodizing process to [...]
Photocatalytic oxidation is a promising technology for the purification of air. Providing the surfaces of objects with a finish which is photocatalytically active and exhibits stable illumination-induced superhydrophilicity, is a promising route how to render [...]
Castro Meira, M.V.
, Ferreira da Silva, A.
, Gutman, N.
, Klason, P.
, Persson, C.
, Sa’ar, A.
, Willander, M.
, Universidade Federal da Bahia, BR
1- Instituto de Física, Universidade Federal da Bahia, Ondina, Salvador-Ba, 40210-340, Brazil 2- CETEC-Universidade Federal do Recôncavo da Bahia, Cruz das Almas-Ba, 44380-000, Brazil 3- Department of Materials Science and Engineering, Royal Institute of Technology, [...]
Polyamide (PA) synthetic textiles are among the most used fibers in the biomedical textile field . Wounds often provide a favorable environment for the colonization of microorganisms. In order to improve the opportunity for wound [...]
Besides the widely investigated photoinduced properties of its oxides, a primary branch of application of anodized titanium is the production of biomedical implants, where a controlled roughness can lead to improvements in cell adhesion and [...]
We present here the patterning of polymer micro- and nanostructures by nanoimprint technique. Since its inception, nanoimprint has gained huge interest as a high-resolution and low-cost lithography technique for microelectronic fabrication. We demonstrate that nanoimprint [...]
, Ding, C.
, MacDonald, N.C.
, Meinhart, C.
, Sigurdson, M.
, Soni, G.
, university of california, santa barbara, US
We report a wicking material based on nanostructured TiO2 (NST) for the application of flat heat pipes. This wicking material is formed by oxidizing Ti pillar structures in H2O2 solution. The NST surfaces shows nano-scale [...]
Quantum dot arrays with precisely controlled positions and sizes are desirable for making templates for micro-and nano-electronic devices. Numerous experimental works have shown that unguided self-assembled growth of quantum dots usually fails to realize perfectly [...]
Pure and cobalt-doped ZnO films were electrodeposited from zinc and cobalt nitrate aqueous solutions on platinum substrates and investigated by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and magneto-optical Kerr effect (MOKE). X-ray photoelectron [...]
When Nano-Imprint Lithography (NIL) process is adopted in the large area applications like display, the stiction phenomenon which is the adhesion or in-plane friction between mold and substrate to disturb fine alignment process can be [...]
, Ferrari, M.
, Hu, Y.
, Li, L.
, Liu, X.
, Tasciotti, E.
, The University of Texas at Austin, US
In this study, the nanoporous silica thin films (NSTF) were chosen for the reproducible fractionation and selective binding of the serum-based low molecular weight proteome (LMWP). It has been recognized that the collection of LMWP [...]
Innovative nanomaterials are finding their way into paints, coatings, and plastics applications. Beside improving or modifying the mechanical polymer properties, giving higher scratch resistance for example, nanoscale materials like CeO2 are applied to improve UV [...]
The overall market share of environmentally friendly water borne coatings is small compared to solvent borne alternatives. Today, they are used in a wide selection of market segments, such as wood and furniture, but also [...]
Thin films of hydrogenated diamond-like carbon (DLC) have been deposited on hydrogenated nitrile butadiene rubber (HNBR) for reduction of friction and enhancement of wear resistance of dynamic rubber seals, by sputtering graphite targets in C2H2/Ar [...]
Journal: TechConnect Briefs
Volume: 3, Nanotechnology 2009: Biofuels, Renewable Energy, Coatings, Fluidics and Compact Modeling
Published: May 3, 2009
Industry sector: Advanced Materials & Manufacturing
Topics: Coatings, Surfaces & Membranes