نتایج جستجو برای: nanoporous surface

تعداد نتایج: 639225  

Journal: :journal of nanostructures 2014
h. bashiri s. eris

isotherm equation is one of the important scientific bases for adsorbent selection. there are different isotherms that do not account for an adsorbate, different chemisorption geometries on the nanoporous surface. it is interesting to introduce a general isotherm, which considers different chemisorption geometries of an adsorbate on nanoporous surfaces. in this study, an isotherm for non-dissoci...

2013
YUQUAN HAO SHUJUN LI XUESONG HAN YULIN HAO HONGJUN AI

The aim of the present study was to investigate the effects of the surface characteristics of nanoporous titanium oxide films, formed by anodization on Ti-24Nb-4Zr-8Sn (Ti2448) alloy, on the early adhesion of osteoblast-like MG-63 cells. Nanoporous titanium oxide films with two different pore sizes (30 and 90 nm) were formed by anodization in NH4F solution on Ti2448 alloy. The surface roughness...

H. Bashiri, S. Eris

Isotherm equation is one of the important scientific bases for adsorbent selection. There are different isotherms that do not account for an adsorbate, different chemisorption geometries on the nanoporous surface. It is interesting to introduce a general isotherm, which considers different chemisorption geometries of an adsorbate on nanoporous surfaces. In this study, an isotherm for non-dissoci...

Journal: :Physical chemistry chemical physics : PCCP 2011
Masataka Hakamada Masaki Takahashi Toshiyuki Furukawa Kazuki Tajima Kazuki Yoshimura Yasumasa Chino Mamoru Mabuchi

Desorption of thiolate self-assembled monolayers (SAMs) seriously limits the fabrication of thiol-based devices. Here we demonstrate that nanoporous Au produced by dealloying Au-Ag alloys exhibits high electrochemical stability against thiolate desorption. Nanoporous Au has many defective sites, lattice strain and residual Ag on the ligament surface. First-principles calculations indicate that ...

2014
Fu-Juan LIU Ji-Huan HE Lan XU Ping WANG

Recently, nanoporous fibers have been caught much attention as the most promising material in nanotechnology. To our knowledge, nanoporous materials have extremely high surface area and are widely used in different fields, such as filtration, radiation protection, catalysis, sensors, tissue engineering, and drug delivery [1-2]. Electrospinning is an effective method, which can fabricate polymer...

2009
Jürgen Biener Arne Wittstock Theodore F. Baumann Jörg Weissmüller Marcus Bäumer Alex V. Hamza

Although surfaces or, more precisely, the surface atomic and electronic structure, determine the way materials interact with their environment, the influence of surface chemistry on the bulk of the material is generally considered to be small. However, in the case of high surface area materials such as nanoporous solids, surface properties can start to dominate the overall material behavior. Th...

2013
K. Y. Mak L. Li C. M. Wong S. M. Ng C. W. Leung J. Shi H. K. Koon X. Chen C.S.K. Mak M. M. Chan

Material surface topography is an important factor for regulating cellular behaviour. Understanding the mechanism of how surface topography influences mammalian cells is critical for the development of medical implants and tissue engineering. In this study, we investigated the influences of nanoporous and microgrooved substrates on the morphology and migration of hepatic cell line, BEL-7402 cel...

Journal: :Nanoscale 2014
Fusheng Zhao Jianbo Zeng Md Masud Parvez Arnob Po Sun Ji Qi Pratik Motwani Mufaddal Gheewala Chien-Hung Li Andrew Paterson Uli Strych Balakrishnan Raja Richard C Willson John C Wolfe T Randall Lee Wei-Chuan Shih

Plasmonic metal nanostructures have shown great potential in sensing, photovoltaics, imaging and biomedicine, principally due to the enhancement of local electric field by light-excited surface plasmons, i.e., collective oscillation of conduction band electrons. Thin films of nanoporous gold have received a great deal of interest due to the unique 3-dimensional bicontinuous nanostructures with ...

Hydrothermal and non-hydrothermal spherical TiO2 nanoporous with crystalline framework were prepared by sol-gel method. The Crystalline structures, morphologies and surface texturing of materials were determined by X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2 adsorption-desorption isotherms. The Hydrothermal spherical TiO2 nanoporous was found to have a narrow and strong p...

Journal: :The Journal of chemical physics 2009
Luning Zhang Seema Singh Chuanshan Tian Y Ron Shen Yan Wu Mark A Shannon C Jeffery Brinker

Using sum-frequency vibrational spectroscopy, we found that water structure at nanoporous silica/water interfaces depended on the nanoporous film structure. For a periodic, self-assembled nanoporous film with monosized 2 nm pores occupying 20% of the top surface area, the surface vibrational spectrum was dominated by water in contact with silica, bare or covered by silane, at the top surface. I...

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