Coatings, Surfaces & Membranes – Page 19

Synthesis and X-ray photoelectron spectroscopy studies of poly(vinyl pyrrolidone) capped gold nanoparticles in a hybrid composite

Mishra A., Tripathy P., Ram S., Fecht H-J., Indian Institute of Technology, IN

Gold nanoparticles are synthesized by direct reduction of an aqueous solution of the metal salt with a surface regulating polymer N-polyvinyl pyrrolidone (PVP), which bind on the gold surface, insulate the particles from Au3+ and [...]

Au Nanoparticle Coupled- Surface Plasmon Resonance Immuno-sensor for Sensitivity Enhancement

Kim H-S, Kim J.H., Kim H-S, Kim J.H., Ko S-H., Cho Y-J, Kim H-S, Kim J.H., Ajou University, KR

In order to overcome the sensitivity limitation of SPR, nanoparticle-coupled SPR biosensors have explored since nanoparticles may significantly enhance the sensitivity by 1-2 orders of magnitude. Although the nanoparticle conjugated method contributes to the enhancement [...]

Fluorination effects on tribological characteristics of hydrogenated amorphous carbon thin films

Rubio-Roy M., Portal S., Polo M.C., Pascual E., Bertran E., Andújar J.L., Universitat de Barcelona, ES

Hydrogenated amorphous carbon (a C:H) films are good candidates for biomedical applications, requiring smooth surfaces, biocompatibility and singular tribological characteristics. The addition of elements to a C:H films, such as oxygen, silicon, fluorine or metals, [...]

Oxygen plasma treated superhydrophobic nozzle for electrospray device

Lee S., Lee Y., Byun D., Tran S.B.Q., Kim S., Park B., Lee S., Lee Y., Konkuk University, KR

When the meniscus of liquid is subject to strong electric field, electric charge is induced on the meniscus and electrostatic force elongates the liquid to form a cone-jet. This electrospray phenomenon can be applied to [...]

Nano-diamond Coatings on Aluminum 319 for Improved Tribological Properties

Blum R., Kalyanasundaram D., Nair R., Molian P., Iowa State University, US

Laser-induced phase transition and sintering of nano-diamond powders (4-8nm) was used to produce a thick (10-50um) strongly adherent nano-diamond/diamond-like carbon (nD-DLC) coatings on aluminum alloy 319. A transition to diamond-like carbon produced a Vickers hardness [...]

Effects of _-Stabilized Alloying Element on the Nanotube Morphology of Ti-Alloy

Jang S.H., Choe H.C., Ko Y.M., Brantley W., Chosun University, KR

In the present study, we chose Nb as a binary alloying element because it has excellent biocompatibility and be expected to act as a -stabilizer. The purities of the starting raw materials were 99.99% for [...]

Electrochemical Characteristics of Nanotube Formed Ti-Zr Alloy

Kim W.G., Choe H.C., Ko Y.M., Brantley W., Chosun University, KR

In this paper, Ti-Zr(10, 20, 30 and 40 wt%) alloys were prepared by arc melting and nano-structure controlled for 24 hr at 1000 °C in argon atmosphere. Formation of oxide nanotubes are conducted by anodizing [...]

Phenomena of Nanotube Formation on the Surface of Cp-Ti, Ti-6Al-4V, and Ti-Ta alloys

Lee K., Choe H.C., Ko Y.M., Brantley W.A., Chosun University, KR

In this study, the phenomena of nanotube formation on the surface of Ti alloys by electrochemical method. Nanotube layer formed on Ti alloys in 1 M H3PO4 and 1 M H2SO4 electrolyte with small additions [...]

Nanotube Formation and Surface Study of New Ternary Titanium Alloys

Choe H.C., Ko Y.M., Brantley W.A., Chosun University, KR

New titanium alloys with improved biocompatibility have been developed for dental and biomedical applications. The osseointegration of implants depends on surface properties of these alloys; nature of the oxide film at the metal-oxide-bone. Also stress [...]

Silane-based water repellent and easy-to-clean surfaces for concrete structure improvement

Kargol M.A., Danish Technological Institute, DK

In addition to its civil engineering properties, concrete also has an architectural and aesthetic function. When the concrete structure ages, the visible appearance of the surface gradually changes as it is exposed to the environment, [...]