Football microballoons produced by evaporation of colloidal drops a fakir microcama "Francis (th) E mule Science's News
Filed under: Science, Physics, Medicine, Nanotechnology, News, Physics, Science - emulenews @ 09:00 Tags: Bionanotechnology, Science, Curiosities, pall membranes Experiment, Physics, Physics (or mechanical) pall membranes of fluids, pall membranes Medicine, Nanotechnology, News
The holder of this post may seem far fetched, but follows the line of the white paper "Building micro-soccer-balls with evaporating colloidal drops fakir," arXiv: 1203.4361, submitted to Physical Review Letters first, pall membranes but has finished appearing in PNAS, as Alvaro G. Marín et al, "Building microscopic soccer balls with evaporating colloidal drops fakir," PNAS 109: 16455-16458, October 9, 2012. Alvaro is a physicist Seville who after earning his PhD in the group of Antonio Barrero Ripoll (1947-2010), as many young people had to emigrate to continue his brilliant research career. After three years at the University pall membranes of Twente, Netherlands, is now at the Bundeswehr University of Munich, Germany. His work in micro-and nano-fluid is really interesting. Section Eureka! La Rosa de los Vientos, Onda Cero, this weekend has been dedicated to his work. If you want to hear the audio, follow this link.
The video shows the evaporation of a drop forming colloidal a "football microballoon." A hole in the microballoon shows the packing of the particles that form, as shown in the picture below.
When it comes to nanotechnology, the first thing to remember is what a nanometer. One nanometer (nm) is one billionth of a meter. A nanometer over a meter in diameter would be like the one cent coin to the diameter of the Earth. The diameter of an atom is between 0.1 and 0.5 nm, which means that at 100 nm fit between 200 and 1000 atoms positions (in Indian file).
Alvaro and colleagues have developed a method for fabricating microbeads which can be applied to the manufacture of nanopellets (with diameters between 10 and 100 nm). In my opinion this is a very interesting method which is based on the evaporation of water droplets pall membranes allowing nanopellets manufacturing of drugs and other substances of biomedical interest. Dissolve the drug in a drop of water to form a colloid and the drop is placed above a surface pall membranes to evaporate superhidrófuga. The drop does not wet anything superhidrófugo pall membranes material, which keeps its spherical pall membranes shape, even while evaporating (as shown in the video above). pall membranes As drugs can not evaporate accumulate inside the drop, moving and piling like oranges in a box (as shown above). The result is a compact whose shape reminds nanobola (far) to a tiny soccer ball-shaped faces pentagons and hexagons. The curious thing about this method is that we should not do anything special, just let the water drop evaporates by itself.
These "nanobalones football" are very small, how are manipulated to introduce them into the body as medicines. The work of Alvaro and colleagues proposed drug dosing as an application for your nanopellets. pall membranes Although I can think of several options, the simplest is to form artificial liposomes. Liposomes are small bags (vesicles) into cells whose membrane is composed of one or more layers of lipids, which are capable of self assembly. Nanopellets sufficient drug dipping in an aqueous slurry to form a sachet lipids that wrap. Nowadays it is easy to manufacture nanoliposomes with a diameter in the range of 10 to 100 nanometers. Moreover, as can be manufactured on an industrial scale and at an affordable price.
What can these nanoliposomes in biomedicine? When liposomes are injected into the body, for example intravenously, most liposomes are phagocytosed by cells of defense of our body and are transported by phagocytes liver, spleen or bone marrow, where they are digested, releasing drugs. To direct the drugs to other body organs must avoid fagotización. One way to achieve nanoliposomes are, because they are very small and go unnoticed to phagocytes and may reach other parts of the body.
How does a nanoliposoma pall membranes where to release a drug, ie, the drug can be directed pall membranes specifically to a tumor or a specific cell type? The advantage of nanoliposomes, and the liposomes pall membranes generally artificial, that can be put in their membrane and molecular markers specific antibodies against certain cells, whereby the drug can be directed directly towards the target, as if the li
Filed under: Science, Physics, Medicine, Nanotechnology, News, Physics, Science - emulenews @ 09:00 Tags: Bionanotechnology, Science, Curiosities, pall membranes Experiment, Physics, Physics (or mechanical) pall membranes of fluids, pall membranes Medicine, Nanotechnology, News
The holder of this post may seem far fetched, but follows the line of the white paper "Building micro-soccer-balls with evaporating colloidal drops fakir," arXiv: 1203.4361, submitted to Physical Review Letters first, pall membranes but has finished appearing in PNAS, as Alvaro G. Marín et al, "Building microscopic soccer balls with evaporating colloidal drops fakir," PNAS 109: 16455-16458, October 9, 2012. Alvaro is a physicist Seville who after earning his PhD in the group of Antonio Barrero Ripoll (1947-2010), as many young people had to emigrate to continue his brilliant research career. After three years at the University pall membranes of Twente, Netherlands, is now at the Bundeswehr University of Munich, Germany. His work in micro-and nano-fluid is really interesting. Section Eureka! La Rosa de los Vientos, Onda Cero, this weekend has been dedicated to his work. If you want to hear the audio, follow this link.
The video shows the evaporation of a drop forming colloidal a "football microballoon." A hole in the microballoon shows the packing of the particles that form, as shown in the picture below.
When it comes to nanotechnology, the first thing to remember is what a nanometer. One nanometer (nm) is one billionth of a meter. A nanometer over a meter in diameter would be like the one cent coin to the diameter of the Earth. The diameter of an atom is between 0.1 and 0.5 nm, which means that at 100 nm fit between 200 and 1000 atoms positions (in Indian file).
Alvaro and colleagues have developed a method for fabricating microbeads which can be applied to the manufacture of nanopellets (with diameters between 10 and 100 nm). In my opinion this is a very interesting method which is based on the evaporation of water droplets pall membranes allowing nanopellets manufacturing of drugs and other substances of biomedical interest. Dissolve the drug in a drop of water to form a colloid and the drop is placed above a surface pall membranes to evaporate superhidrófuga. The drop does not wet anything superhidrófugo pall membranes material, which keeps its spherical pall membranes shape, even while evaporating (as shown in the video above). pall membranes As drugs can not evaporate accumulate inside the drop, moving and piling like oranges in a box (as shown above). The result is a compact whose shape reminds nanobola (far) to a tiny soccer ball-shaped faces pentagons and hexagons. The curious thing about this method is that we should not do anything special, just let the water drop evaporates by itself.
These "nanobalones football" are very small, how are manipulated to introduce them into the body as medicines. The work of Alvaro and colleagues proposed drug dosing as an application for your nanopellets. pall membranes Although I can think of several options, the simplest is to form artificial liposomes. Liposomes are small bags (vesicles) into cells whose membrane is composed of one or more layers of lipids, which are capable of self assembly. Nanopellets sufficient drug dipping in an aqueous slurry to form a sachet lipids that wrap. Nowadays it is easy to manufacture nanoliposomes with a diameter in the range of 10 to 100 nanometers. Moreover, as can be manufactured on an industrial scale and at an affordable price.
What can these nanoliposomes in biomedicine? When liposomes are injected into the body, for example intravenously, most liposomes are phagocytosed by cells of defense of our body and are transported by phagocytes liver, spleen or bone marrow, where they are digested, releasing drugs. To direct the drugs to other body organs must avoid fagotización. One way to achieve nanoliposomes are, because they are very small and go unnoticed to phagocytes and may reach other parts of the body.
How does a nanoliposoma pall membranes where to release a drug, ie, the drug can be directed pall membranes specifically to a tumor or a specific cell type? The advantage of nanoliposomes, and the liposomes pall membranes generally artificial, that can be put in their membrane and molecular markers specific antibodies against certain cells, whereby the drug can be directed directly towards the target, as if the li
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