What do nano tubes do?
What do nano tubes do?
CNTs can act as antennas for radios and other electromagnetic devices. Conductive CNTs are used in brushes for commercial electric motors. They replace traditional carbon black. The nanotubes improve electrical and thermal conductivity because they stretch through the plastic matrix of the brush.
How are nano tubes formed?
The fullerenes and CNTs are formed by plasma arcing of carbonaceous materials, particularly graphite. The fullerenes or carbon nanotubes appear in the soot that is formed, while the CNTs are deposited on the opposing electrode.
Are carbon nanotubes used for drug delivery?
Carbon nanotubes (CNTs) were discovered in 1991 and shown to have certain unique physicochemical properties, attracting considerable interest in their application in various fields including drug delivery. Considerable work has been done on CNTs as drug delivery systems over the last two decades.
How do you make carbon nano tubes?
In the CVD process, manufacturers can combine a metal catalyst (such as iron) with carbon-containing reaction gases (such as hydrogen or carbon monoxide) to form carbon nanotubes on the catalyst inside a high-temperature furnace. The CVD process can be purely catalytic or plasma-supported.
How are nanotechnology used in drug delivery systems?
Nanotechnology is opening up new avenues for drug delivery vehicles. NIBIB-funded researchers have reported promising results in developing a treatment for glioblastoma, a devastating brain cancer. In rat models of the disease, they have shown that tumors can be penetrated and shrunken when injected with nanoparticles.
How big do nanoparticles need to be for drug delivery?
Although the definition identifies nanoparticles as having dimensions below 0.1 μm or 100 nm, especially in the area of drug delivery relatively large (size >100 nm) nanoparticles may be needed for loading a sufficient amount of drug onto the particles.
How are nanoparticles used to deliver cancer drugs?
Many researchers attach ethylene glycol molecules to nanoparticles that deliver therapeutic drugs to cancer tumors. The ethylene glycol molecules stop white blood cells from recognizing the nanoparticles as foreign materials, allowing them to circulate in the blood stream long enough to attach to cancer tumors.
What are the aims of nanoparticle entrapment of drugs?
The aims for nanoparticle entrapment of drugs are either enhanced delivery to, or uptake by, target cells and/or a reduction in the toxicity of the free drug to non-target organs. Both situations will result in an increase of therapeutic index, the margin between the doses resulting in a therapeutic efficacy (eg,…
What do nano tubes do? CNTs can act as antennas for radios and other electromagnetic devices. Conductive CNTs are used in brushes for commercial electric motors. They replace traditional carbon black. The nanotubes improve electrical and thermal conductivity because they stretch through the plastic matrix of the brush. How are nano tubes formed? The fullerenes…