Optical resonant absorption of Ag–Ti co-sputtered composite films

Han, Jun; Han, Yi-Bo; Chen, Dai-Jian; Ding, Sha; Wang, Qu‐Quan

doi:10.1016/j.matlet.2005.09.042

Cited by 5 publications

(1 citation statement)

References 10 publications

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“…The possible composition of the doped bismuth are reducing bismuth (Bi 0 : 157 eV, 162 eV), Bi 2 O 3 (Bi 3+ :158.8 eV, 163.7 eV), and Bi 2 Ti 2 O 7 (Bi 3+ : 159.5 eV, 164.9 eV) 25 by deconvolution of the split Bi 4f peak (data not shown). In the AN spectrum, two small peaks around 370 eV belong to the Ag 0 3 d 5/2 (368.2 eV) and Ag 0 3 d 3/2 (374.2 eV) bands 26 demonstrate the existence of silver on the AN surface. The quantitative determination of the surface compositions of the MAO samples are shown in Table 2.…”

Section: Resultsmentioning

confidence: 99%

In vitro antibacterial activity and cytocompatibility of bismuth doped micro-arc oxidized titanium

et al. 2011

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Chemical manipulations of the implant surface produce a bactericidal feature to prevent infections around dental implants. Despite the successful use of bismuth against mucosal and dermis infections, the antibacterial effect of bismuth in the oral cavity remains under investigation. The aim of this study was to evaluate the antibacterial activities of bismuth compounds against Actinobacillus actinomycetemcomitans, Staphylococcus mutans, and methicillin-resistant Staphylococcus aureus (MRSA), and to investigate the antimicrobial effects of bismuth doped micro-arc oxidation (MAO) titanium via an agar diffusion test. Cell viability, alkaline phosphatase activity, and mineralization level of MG63 osteoblast-like cells seeded on the coatings were evaluated at 1, 7, and 14 days. The results demonstrate that bismuth nitrate possess superior antibacterial activity when compared with bismuth acetate, bismuth subgallate, and silver nitrate. The bismuth doped MAO coating (contained 6.2 atomic percentage bismuth) had good biological affinities to the MG63 cells and showed a higher antibacterial efficacy against Actinobacillus actinomycetemcomitans and MRSA, where the reduction rates of colony numbers is higher than that of the control group by 1.5 and 1.9 times, respectively. These in vitro evaluations demonstrate that titanium implants with bismuth on the surface may be useful for better infection control.

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Section: Resultsmentioning

confidence: 99%

In vitro antibacterial activity and cytocompatibility of bismuth doped micro-arc oxidized titanium

et al. 2011

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TiAgx thin films for lower limb prosthesis pressure sensors: Effect of composition and structural changes on the electrical and thermal response of the films

Lopes

Gonçalves

Pedrosa

et al. 2013

Applied Surface Science

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International audienceTitanium-silver, Ti-Ag, thin films display excellent biocompatibility and reveal great potential to be used as conductive materials for prosthesis pressure sensors. In the frame of this work, TiAgx thin films were deposited onto silicon and glass substrates by DC magnetron sputtering, using a pure Ti target containing different amounts of Ag pellets. The films display Ag/Ti ratios varying from 0 up to 0.36, resulting in relatively large range of composition, which gave rise to varied morphological, structural and some selected property responses. For Ag/Ti ratios below 3.0 × 10−3, the TiAgx films exhibited similar behavior to those of standard Ti films. Above this critical value, the role of Ag becomes crucial on the crystallographic structure evolution, as well as on the surface morphology changes of the films. A gradual increase of the Ag/Ti ratio leads to the growth of Ti-Ag crystalline phases, whereas the long range order of Ti grains was reduced from 22 nm down to 7 nm. Similarly, a denser microstructure was developed with a reduction of the sharpness of the surface morphology. This critical Ag/Ti ratio (<3.0 × 10−3) also corresponded to an enhanced electrical resistivity, which reached a value of ρ300K = 72 μΩ cm. The thermal characterization revealed a similar trend, with the existence of two clear distinct zones, related again with the different critical composition ratios and the correspondent changes in both morphology and structural features

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Transparent organic light-emitting diodes consisting of a metal oxide multilayer cathode

Ryu

Noh

Hwang

et al. 2008

Applied Physics Letters

103

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The authors have developed a semitransparent, multilayered cathode of indium tin oxide (ITO)/Ag/tungsten oxide (WO3) for transparent organic light-emitting diodes. The device showed a weak negative differential resistance (NDR), until the operating voltage of 8V was reached. NDR was due to the resonant tunneling by both the quantum barrier and quantum well. The silver oxide (Ag2O) on the Ag metal was confirmed by x-ray photoelectron spectroscopy, and the energy levels of Ag2O were quantized due to the quantum size effect and this produced the resonant tunneling channels. The device using ITO∕Ag∕WO3 with a LiF∕Al bilayer was superior to those devices which only used ITO or WO3, mainly because the out coupling was enhanced by employing a WO3 material, which is much more transparent than ITO.

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Optical resonant absorption of Ag–Ti co-sputtered composite films

Cited by 5 publications

References 10 publications

In vitro antibacterial activity and cytocompatibility of bismuth doped micro-arc oxidized titanium

In vitro antibacterial activity and cytocompatibility of bismuth doped micro-arc oxidized titanium

TiAgx thin films for lower limb prosthesis pressure sensors: Effect of composition and structural changes on the electrical and thermal response of the films

Transparent organic light-emitting diodes consisting of a metal oxide multilayer cathode

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