Templating nanotraffic light – dynamic tricoloured blinking silver nanoclusters on a graphene oxide film

2018 ◽  
Vol 6 (17) ◽  
pp. 4641-4648 ◽  
Author(s):  
S. X. Lim ◽  
Y. Z. Lee ◽  
N. Gao ◽  
J. Lu ◽  
Q. Xu ◽  
...  

Laser initiated site selective formation of dynamic tri-colour blinking silver nanoparticles on a transparent, flexible GO thin film.

RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107811-107821 ◽  
Author(s):  
K. Sarkar ◽  
Kalyan Jyoti Sarkar ◽  
P. Banerji

The transport of charge carriers in a graphene oxide–silver nanoparticle composite is found to be controlled by nanoparticle dose.


2015 ◽  
Vol 3 (6) ◽  
pp. 852-860 ◽  
Author(s):  
Panpan Zhang ◽  
Haixia Wang ◽  
Xiaoyuan Zhang ◽  
Wei Xu ◽  
Yang Li ◽  
...  

Reduced graphene oxide film decorated with silver nanoparticles shows enhanced antibacterial activity and improved biocompatibility.


Author(s):  
Wentao Qin ◽  
Dorai Iyer ◽  
Jim Morgan ◽  
Carroll Casteel ◽  
Robert Watkins ◽  
...  

Abstract Ni(5 at.%Pt ) films were silicided at a temperature below 400 °C and at 550 °C. The two silicidation temperatures had produced different responses to the subsequent metal etch. Catastrophic removal of the silicide was seen with the low silicidation temperature, while the desired etch selectivity was achieved with the high silicidation temperature. The surface microstructures developed were characterized with TEM and Auger depth profiling. The data correlate with both silicidation temperatures and ultimately the difference in the response to the metal etch. With the high silicidation temperature, there existed a thin Si-oxide film that was close to the surface and embedded with particles which contain metals. This thin film is expected to contribute significantly to the desired etch selectivity. The formation of this layer is interpreted thermodynamically.


2020 ◽  
Vol 59 (12) ◽  
pp. 125001
Author(s):  
Nan Ye ◽  
Satoka Ohnishi ◽  
Mitsuhiro Okada ◽  
Kazuto Hatakeyama ◽  
Kazuhiko Seki ◽  
...  

2020 ◽  
Author(s):  
Lalita Devi ◽  
Amodini Mishraand ◽  
Subhasis Ghosh

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2351
Author(s):  
Zheng Su ◽  
Daye Sun ◽  
Li Zhang ◽  
Miaomiao He ◽  
Yulin Jiang ◽  
...  

In this work, we designed and fabricated a multifunctional nanocomposite system that consists of chitosan, raspberry-like silver nanoparticles, and graphene oxide. The room temperature atmospheric pressure microplasma (RT-APM) process provides a rapid, facile, and environmentally-friendly method for introducing silver nanoparticles into the composite system. Our composite can achieve a pH controlled single and/or dual drug release. Under pH 7.4 for methyl blue loaded on chitosan, the drug release profile features a burst release during the first 10 h, followed by a more stabilized release of 70–80% after 40–50 h. For fluorescein sodium loaded on graphene oxide, the drug release only reached 45% towards the end of 240 h. When the composite acted as a dual drug release system, the interaction of fluorescein sodium and methyl blue slowed down the methyl blue release rate. Under pH 4, both single and dual drug systems showed a much higher release rate. In addition, our composite system demonstrated strong antibacterial abilities against E. coli and S. aureus, as well as an excellent photothermal conversion effect under irradiation of near infrared lasers. The photothermal conversion efficiency can be controlled by the laser power. These unique functionalities of our nanocomposite point to its potential application in multiple areas, such as multimodal therapeutics in healthcare, water treatment, and anti-microbials, among others.


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