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Laser method
| Глоссарий терминов в нанотехнологиях |
One of the synthesis methods for carbon nanotubes. “in 1996, a dual-pulsed laser vaporization technique was developed, which produced swnts in gram quantities and yields of >70wt% purity. samples were prepared by laser vaporization of graphite rods with a 50:50 catalyst mixture of co and ni (particle size ~1um) at 1200oc in flowing argon, followed by heat treatment in a vacuum at 1000oc to remove the c60 and other fullerenes. the initial laser vaporization pulse was followed by a second pulse, to vaporize the target more uniformly. the use of two successive laser pulses minimizes the amount of carbon deposited as soot. the second laser pulse breaks up the larger particles ablated by the first one, and feeds them into the growing nanotube structure. [nanotechnology
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Las, польский
Las, испанский
Las, английский
- Liquid additive storage tanks
- Laboratories of applied sciences
- Landing aid system
- Large amplitude simulator
- Large astronomic satellite
- Laser
- Late arm switch
- Launch auxiliary system
- Lockheed aircraft service
- Low-alloy steel
- Low-altitude satellite
- Land analysis system
- Last assigned landing slot
- Lower airspace sector
Las casas, английский
Las excepciones, английский
Las declaraciones por cada parte en un caso civil o criminal que reserva el derecho de apelar la resolucion de un juez una mocion. tambien, en casos regulamientos, las objeciones por cada parte a puntos hechos por la otra parte a resoluciones hechos por l
Las frutas, испанский
Las leyes de falta de testamento, испанский
Vea los estatutos de distribucion
Las manzanas, испанский
Las naranjas, испанский
Las navas de tolosa, английский
Las palmas, английский
Las patatas, испанский
Las piñas, английский
Lp
Las pistas para el registrador, испанский
Las texturas primarias se distinguen en rocas sedimentarias., испанский
Las tunas, английский
Las vegas, английский
Las vegas institute for advanced dental studies, английский
Las vegas valley water district, английский
Lasam, английский
Laser semiactive missile
Lascar, английский
- A native sailor in the east indies; also, in a military sense, natives of india employed in pitching tents, or dragging artillery, as gun-lascars.
- An east indian seaman (hindi lashkari = soldier).
Vaporization, английский
- Conversion of a solid or liquid into a vapor.
- Парообразование, испарение
- The process in which a substance changes from a solid or liquid into a gas.
Fullerenes, английский
A spherical carbon molecule in which the carbon atoms are arranged in a soccer ball shape. c60 was the first fullerene of the now thirty or more fullerene families. in a c60 structure, there are 60 carbon atoms and a number of five-membered rings isolated by six-membered rings.
Successive, английский
A последовательный sound
Nanotechnology, английский
- The study, development and processing of materials, devices and systems
- The usage of matter on the nanometer scale to produce structures, systems, and technological devices.
- Originally used to define any work done on the molecular scale, or one billionth of a meter. this term is now used broadly (& loosely) for anything that is really small (usually smaller than a micrometer).
- See molecular nanotechnology. is used loosely by many companies & individuals to describe anything to do with things smaller than a micrometer.
- The science of designing, producing and using structures and devices that have one or more dimensions of 100 nanometres (one millionth of a millimetre) or less.
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Arc method, английский
One of the synthesis methods for carbon nanotubes. this method creates cnts through arc-vaporization of two carbon rods placed end to end, separated by approximately 1mm, in an enclosure that is usually filled with inert gas (helium, argon) at low pressure (between 50 and 700 mbar). recent investigations have shown that it is also possible to create cnts with the arc method in liquid nitrogen. a direct current of 50 to 100 a, driven by a potential difference of approximately 20 v, creates a high temperature discharge between the two electrodes. the discharge vaporizes the surface of one of the carbon electrodes, and forms a small rod-shaped deposit on the other electrode. producing cnts in high yield depends on the uniformity of the plasma arc, and the temperature of the deposit forming on the carbon electrode.” [nanotechnology
Enzymes, английский
Naturally occurring chemical substances in the human body that help a chemical reaction take place.
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