Study on the Preparation of Silver Nanoparticles Coated with Diamond-Like Carbon Film and their Properties

2013 ◽  
Vol 745-746 ◽  
pp. 60-65
Author(s):  
Nan Yu Ma ◽  
Dan Zeng ◽  
Yu Jie Huang ◽  
Jun Wei Di ◽  
Mu Sen Li
Keyword(s):  
Deposition Time ◽  
Near Infrared ◽  
Resonance Effect ◽  
Carbon Film ◽  
Chemical Vapor ◽  
Diamond Like Carbon ◽  
Ag Nps ◽  
Surface Plasma Resonance ◽  
Dlc Film ◽  
Biological Compatibility

Ag nanoparticles (NPs) have prominent local surface plasma resonance effect (LSPR), and Ag NPs exhibit sharpest and strongest bands among all metals. Diamond-like carbon (DLC) film have good biological compatibility and also have high transmissibility in the visible and near-infrared region. A new LSPR interface between Ag NPs and ultra-thin DLC film was formed by Plasma Enhanced Chemical Vapor Deposition. The morphologies and properties of the Ag NPs coated with DLC film were studied with SEM and AFM. The results indicated that the thickness of DLC film increased with the deposition time. LSPR peak became sharper after depositing for 1 or 2 min. DLC film was prior to nucleate on the surface of Ag NPs, and it has high content of sp2 bonds near the interface. The sensitivity of new LSPR interface deposited for 20s was about the half of the sensitivity of bare Ag NPs and the sensitivity significantly decreased with deposition time. This result is helpful to understand the behavior of the new LSPR interface and to improve its sensitivity.

The Optical Property and Sensitivity of Ag Nanoparticles Deposited Ultra-Thin Diamond-Like Carbon Films

2013 ◽  
Vol 803 ◽  
pp. 222-225
Author(s):  
Hua Song ◽  
Nan Yu Ma ◽  
Jun Wei Di ◽  
Mu Sen Li
Keyword(s):  
Ag Nanoparticles ◽  
Near Infrared ◽  
Resonance Effect ◽  
Chemical Vapor ◽  
Carbon Films ◽  
Infrared Range ◽  
Diamond Like Carbon ◽  
Ag Nps ◽  
Surface Plasma Resonance ◽  
Biological Compatibility

Ag nanoparticles (NPs) had most prominent local surface plasma resonance effect (LSPR) among the all metals. Diamond-like carbon (DLC) film had good biological compatibility, wear resistance, corrosion-resisting and high transmission ability in the visible and near-infrared range. Since the Ag NPs were easily oxidized in air,a new LSPR interface between them and an ultra-thin DLC films was formed by means of a plasma enhanced chemical vapor deposition (PECVD). The morphologies and properties of the Ag NPs deposited ultra-thin DLC films were studied by using Raman spectrometer, X-ray photoelectron spectrometer (XPS) , field emission scanning electron microscope (FESEM) and atomic force microscope (AFM) and so on. And the optical tramsmission sensitivity of the new LSPR interface was also examined. The results indicated that the DLC films deposited in a shorter time had a higher sp3bond content of carbon atoms and more sensitive to refractive index of surrounding media. Moreover, to obtain the optimal morphologies and the sensing property, the deposition time for forming the DLC films should be controlled within 30 seconds.

The Optical Properties of Au/Ag Nanoparticles Coated with Diamond-Like Carbon Films

2012 ◽  
Vol 569 ◽  
pp. 39-43 ◽  
Author(s):  
Nan Yu Ma ◽  
Yu Jie Huang ◽  
Mu Sen Li
Keyword(s):  
Near Infrared ◽  
Surface Effect ◽  
Carbon Films ◽  
Noble Metal Nanoparticles ◽  
Diamond Like Carbon ◽  
Ag Nps ◽  
Surface Plasma Resonance ◽  
Visible Absorption ◽  
Optical Phenomenon ◽  
Biological Compatibility

Abstract. Noble metal nanoparticles have prominent surface effect, quantum size effect and active outer-shell electrons, they cause these particles to present unusual optical phenomenon, display the strong local surface plasma resonance (LSPR) effect. DLC films have good biological compatibility, good wear resistance and corrosion-resisting, it also has high transmissibility in the visible and near-infrared region. A new LSPR interface between diamond-like carbon films and the Au/Ag NPs was formed by Plasma Enhanced Chemical Vapor Deposition (PECVD), The optical and electrical properties of the samples were studied with ultraviolet-visible absorption spectrophotometer and Raman spectrometer. The results indicate that their transmittance decreased with the increase of the film thickness.

MULTILAYERS DIAMOND-LIKE CARBON FILM WITH GERMANIUM BUFFER LAYERS BY PULSED LASER DEPOSITION

2017 ◽  
Vol 24 (02) ◽  
pp. 1750014 ◽  
Author(s):  
Y. CHENG ◽  
Y. M. LU ◽  
Y. L. GUO ◽  
G. J. HUANG ◽  
S. Y. WANG ◽  
...  
Keyword(s):  
Critical Load ◽  
Carbon Film ◽  
High Hardness ◽  
Buffer Layers ◽  
Diamond Like Carbon ◽  
Dlc Film ◽  
Diamond Like Carbon Film ◽  
Film Hardness ◽  
Protective Films ◽  
Germanium Substrate

Multilayer diamond-like carbon film with germanium buffer layers, which was composed of several thick DLC layers and thin germanium island “layers” and named as Ge-DLC film, was prepared on the germanium substrate by ultraviolet laser. The Ge-DLC film had almost same surface roughness as the pure DLC film. Hardness of the Ge-DLC film was above 48.1[Formula: see text]GPa, which was almost the same as that of pure DLC film. Meanwhile, compared to the pure DLC film, the critical load of Ge-DLC film on the germanium substrate increased from 81.6[Formula: see text]mN to 143.8[Formula: see text]mN. Moreover, Ge-DLC film on germanium substrates had no change after fastness tests. The results showed that Ge-DLC film not only kept high hardness but also had higher critical load than that of pure DLC film. Therefore, it could be used as practical protective films.

The Biocompatibility of Ti Alloy Improved by Nitrogen-Doped Diamond-Like Carbon Films

2014 ◽  
Vol 711 ◽  
pp. 250-254 ◽  
Author(s):  
Wufanbieke Baheti ◽  
Ming Xin Li ◽  
Fu Guo Wang ◽  
Jin Ge Song ◽  
Long Hua Xu ◽  
...  
Keyword(s):  
Contact Angle ◽  
Photoelectron Spectroscopy ◽  
Carbon Film ◽  
Chemical Vapor ◽  
Carbon Films ◽  
Diamond Like Carbon ◽  
Measuring Device ◽  
Nitrogen Doped ◽  
Angle Measuring ◽  
N Doping

The nitrogen-doped diamond-like carbon film was prepared on Ti6Al4V alloy by using plasma enhanced chemical vapor deposition (PECVD) technique,and its biocompatibility was studied.The surface morphology,chemical composition and contact angle were measured by scanning electron microscope (SEM),X-ray photoelectron spectroscopy(XPS),Raman Spectrometer and contact angle measuring device. Finally, the proliferation rate and cellular morphology of 3T3-E1 osteoblast cells on different sample surfaces were tested and Image J software was used to statistically analyze the count of the adhered cells. The results showed that cell adhesion and proliferation were significantly (P<0.05) increased on nitrogen-doped diamond-like carbon films , which illustrated that N doping improved the biocompatibility of DLC films. This finding has potential clinical application value to modify titanium alloy for new bone formation.

Deposition of a Diamond-Like-Carbon Film by Ion Plating and Investigation on its Adhesiveness

2017 ◽  
Vol 749 ◽  
pp. 70-75
Author(s):  
Xia Zhu ◽  
Kazuki Kubo ◽  
Hiromichi Toyota ◽  
Shinfuku Nomura ◽  
Yukiharu Iwamoto ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Diamond Crystal ◽  
Carbon Film ◽  
Pure Metal ◽  
Diamond Like Carbon ◽  
Interlayer Thickness ◽  
Coating Materials ◽  
Dlc Film ◽  
Ion Plating ◽  
Excellent Method

Diamond-like-carbon (DLC) films are promising as coating materials. Ion plating, an excellent method in terms of adhesiveness, step coverage, and deposition rate, can form not only pure metal films but also oxide films, nitride films, and carbonized films. In this study, which aimed to form a DLC film with good adhesiveness and a diamond crystal structure, a DLC film, with a SiC interlayer formed by ion plating with introduction of tetramethylsilane (TMS), was formed. It was experimentally revealed that as the interlayer thickness increases, the crystal structure in the DLC film becomes more diamond rich, and the adhesiveness of the DLC film and substrate is thereby improved.

Diamond-like Carbon Film Coating for Tissue Engineering

2008 ◽  
Vol 1138 ◽  
Author(s):  
Yasuharu Ohgoe ◽  
Haruki Matsuo ◽  
Kazuhiro Nonaka ◽  
Toshiyuki Yaguchi ◽  
Kazuya Kanasugi ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Surface Composition ◽  
Umbilical Vein ◽  
Carbon Film ◽  
Biological Response ◽  
Film Coating ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Diamond Like Carbon ◽  
Dlc Film

AbstractIn this study, we focus on effect of diamond-like carbon (DLC) coating on scaffold for tissue engineering. DLC film was deposited on segmented polyurethane (SPU) scaffold sheet which consists of micro SUP fibers. Structural and compositional effects of the DLC film coating were investigated on cell growth as an investigation of biological response. The surface composition, morphology, structures, and wettability of the DLC film coating was estimated by using X-ray photoelectron spectrometer (XPS), Scanning Electron Microscope (SEM), Ar-laser Raman spectrophotometer (Raman), and contact angle measurement. And then, human umbilical vein endothelial (HUV-EC-C) cells were grown on the DLC coated scaffold sheet. The results presented here suggest that DLC film coating is promising approach to improve biological for tissue engineering.

scholarly journals Elements-Added Diamond-Like Carbon Film for Biomedical Applications

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Narin Sunthornpan ◽  
Shuichi Watanabe ◽  
Nutthanun Moolsradoo
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Friction Coefficient ◽  
Biomedical Applications ◽  
Carbon Film ◽  
Diamond Like Carbon ◽  
Cytotoxicity Test ◽  
Aisi 316L ◽  
Gaseous Mixtures ◽  
Dlc Film

Elements-added diamond-like carbon films for biomedical applications were investigated. The aim of this work was to study the effects of the elemental contents (silicon and silicon-nitrogen) in a DLC film on its properties for biomedical applications. Pure DLC, Si-DLC, and Si-N-DLC films were prepared from C2H2, C2H2 : TMS, and C2H2 : TMS : N2 gaseous mixtures, deposited on an AISI 316L substrate using the plasma-based ion implantation (PBII) technique. The structure of films was analyzed using Raman spectroscopy. The chemical composition of films was measured using energy dispersive X-ray spectroscopy (EDS). The average surface roughness of films was measured by using a surface roughness tester. The hardness and elastic modulus of films were measured by using a nanoindentation hardness tester. The friction coefficient of films was determined using a ball-on-disk tribometer. The surface contact angle was measured by a contact angle measurement. The corrosion performance of each specimen was measured using potentiodynamic polarization. The biocompatibility property of films was conducted using the MTT assay cytotoxicity test. The results indicate that the Si-N-DLC film shows the best hardness and friction coefficient (34.05 GPa and 0.13, respectively) with a nitrogen content of 0.5 at.%N, while the Si-DLC film with silicon content of 14.2 at.%Si reports the best contact angle and corrosion potential (92.47  and 0.398 V, respectively). The Si-N-DLC film shows the highest cell viability percentage of 81.96%, which is lower than the uncoated AISI 316L; this is a considerable improvement. All specimens do not demonstrate any cytotoxicity with approximate viabilities between 74% and 107%, indicating good biocompatibilities.

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