Hongwu International Group Ltd, with HWNANO brand, is a high-tech enterprise focusing on manufacturing, research, development and processing of nanoparticles,nanopowders, micron powders.
The dark conditions inside the human body, however, limit the bacteria-killing efficacy of titanium dioxide. Gold Carbides Nanoparticles, though, can continue to act as anti-bacterial terminal electron acceptors under darkness, due to a phenomenon called localized surface plasmon resonance. Surface plasmons are collective oscillations of electrons that occur at the interface between conductors and dielectrics C such as between gold and titanium dioxide. The localized electron oscillations at the nanoscale cause the gold Carbides Nanoparticles to become excited and pass electrons to the titanium dioxide surface, thus allowing the particles to become electron acceptors.
Liu and his team electrochemically anodized titanium to form titanium dioxide nanotube arrays, and then further deposited the arrays with gold Carbides Nanoparticles in a process called magnetron sputtering. The researchers then allowed Staphylococcus aureus and Escherichia coli to grow separately on the arrays — both organisms were highly unsuccessful, exhibiting profuse membrane damage and cell leakage.
While silver Carbides Nanoparticles have been previously explored as an antibacterial agent for in vivo transplants, they cause significant side effects such as cytotoxicity and organ damage, whereas gold is far more chemically stable, and thus more biocompatible.
“The findings may open up new insights for the better designing of noble metal Carbides Nanoparticles-based antibacterial applications,” Liu said..
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Prior to this new research nanograined diamond grain structures were limited to between 10 and 30nm
Hongwu International Group Ltd, with HWNANO brand, is a high-tech enterprise focusing on manufacturing, research, development and processing of nanoparticles,nanopowders, micron powders.
Scientists have created synthetic diamonds that are harder and more durable than natural diamonds.
At the Yanshan University, researchers have enhanced fake diamonds by creating nanotwinned diamonds (nt-diamonds)”, according to Nature magazine.
The team explained that previous attempts at creating harder synthetic diamonds using the nanotwinned method failed, as the carbon precursors such as graphite, amorphous carbon, and glassy carbon had not worked.
However recent success in synthesizing nanotwinned cubic boron nitride (nt-cBN) with a twin thickness down to ~3.8?nm makes it feasible to simultaneously achieve smaller nanosize, ultrahardness and superior thermal stability,” the researchers stated.
Prior to this new research nanograined diamond grain structures were limited to between 10 and 30nm, and had degraded thermal stability compared to natural diamonds.
Now the researchers have created the direct synthesis of nt-diamond with an average twin thickness of ~5nm, using a precursor of onion carbon Nitrides Nanoparticles at high pressure and high temperature, and the observation of a new monoclinic crystalline form of diamond coexisting with nt-diamond.
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