Nanotubes are categorized as single-walled nanotubes ( SWNTs ) and multi-walled nanotubes ( MWNTs ).

Because SWNTs are p-FETs when exposed to oxygen and n-FETs otherwise, it is possible to protect half of an SWNT from oxygen exposure, while exposing the other half to oxygen.

Single-walled nanotubes are dropping precipitously in price, from around $ 1500 per gram as of 2000 to retail prices of around $ 50 per gram of as-produced 40 – 60 % by weight SWNTs as of March 2010.

There are two main types of nanotubes: single-walled nanotubes ( SWNTs ) and multi-walled nanotubes ( MWNTs ).

One example is the use of two types of SAMs to align single wall carbon nanotubes, SWNTs.

A wound-healing application has been developed which employs a mat of single wall carbon nanotubes ( SWNTs ) coated in a monolayer of povidone-iodine.

As the solvent that was carrying the SWNTs evaporated, the SWNTs became attracted to the MHA SAM because of its hydrophilic nature.

The most basic building block of these systems is the electric wire, and SWNTs with diameters of an order of a nanometer can be excellent conductors.

One useful application of SWNTs is in the development of the first intermolecular field-effect transistors ( FET ).

But more important, and the thing which the casual traveler and the blind sojourner often do not see, is that these places and activities are often the settings in which Persians exercise their extraordinary aesthetic sensibilities.

Water, air, fruit, poetry, music, the human form -- these things are important to Persians, and they experience them with an intense and discriminating awareness.

These things are important to almost all Persians and perhaps most important to the most ordinary.

Here in an evening Persians enjoy many of the things which are important to them: poetry, water, the moon, a beautiful face.

True, ideas are important, perhaps life's most precious treasures.

but they are important foundation stones for more extensive exploration of outer space for the ultimate benefit of all mankind.

When these fields are surveyed together, important patterns of relationship emerge indicating a vast community of reciprocal influence, a continuity of thought and expression including many traditions, primarily literary, religious, and philosophical, but frequently including contact with the fine arts and even, to some extent, with science.

The actual moments of contact are vitally important.

That fact is very clearly illustrated in the case of the many present-day intellectuals who were Communists or near-Communists in their youth and are now so extremely conservative ( or reactionary, as many would say ) that they can define no important political conviction that does not seem so far from even a centrist position as to make the distinction between Mr. Nixon and Mr. Khrushchev for them hardly worth noting.

Although the United States and the U.S.S.R. have been arguing whether there shall be four, five or six top assistants, the most important element in the situation is not the number of deputies but the manner in which these deputies are to do their work.

Some fiscal changes are important.

Orange and lemon are considered important as are such pastels as blue and lilac.

The important people to humanity are not the Khrushchevs and the Castros but the Schweitzers and the Dooleys, and the others like them whose names we will never know.

`` Chickens have short memories '', the doctor remarked, `` that's why they are better company than most people I know '', and he went on to break some important news to Alex.

Small Business Administration, What It Is, What It Does, SBA Services For Community Economic Development, and various other useful publications on currently important management, technical production, and marketing topics are available, on request, from Small Business Administration, Washington 25, D.C..

In this, as in so many aspects of our development assistance activities, the incentive effects of the posture we take are the most important ones.

Many of these experiences are so important that they will be cherished forever by me.

Probably the most important of all matters for review are the broad administrative policies governing the purchase, assignment, use, and management of state vehicles.

The mapping of important physical features such as slopes and types of soil and the collection of all available information pertaining to public utility service areas are being conducted as staff projects and, like the other two inventory projects, are scheduled for completion July 1, 1961.

It should be noted that there are other and equally important reasons for establishing meaningful intergovernmental reporting bases on a uniform fiscal year.

What is important here is that many of the cities and towns recognize the need for improved fiscal practices and are taking the initiative to obtain them.

Similar measurements are being initiated to resolve a large discrepancy in the heat of formation of another important combustion product, beryllium fluoride.

In this respect experience is broader and full of a richer variety of potential meanings than the mind of man or any of his arts or culture are capable of making clear and distinct.

A variety of data are assembled to bear upon such alleged changes as diminished puritan morality, work-success ethic, individualism, achievement, lessened emphasis on future-time orientation in favor of sociability, moral relativism, consideration and tolerance, conformity, hedonistic present-time orientation.

There are many possibilities, including poor circulation, a variety of neurological conditions, and functional disorders.

So be it -- then we must embark on a crash program for 200-megaton bombs of the common or hydrogen variety, and neutron bombs, which do not exist but are said to be the coming thing.

With the whole camp exposed to view we could see the variety of canvas shelters in which Americans are camping now.

These are few and seemingly disjointed data, but they illustrate the important fact that fundamental alterations in conditioned reactions occur in a variety of states in which the hypothalamic balance has been altered by physiological experimentation, pharmacological action, or clinical processes.

While there are many different possibilities for the timing of casework intervention, the experiments recently reported from a variety of traditional settings all point up the importance of an immediate response to the client's initial need for help.

Here a variety of meanings and emotions are concentrated, or reduced, in their communicative expression, to some comparatively simple-seeming verbal or nonverbal statement.

Even beginning students in linguistics are made familiar with an appreciable variety of consonant systems, both in their general outlines and in many specific details.

On the whole they maintain much the same high standard, but they are much more difficult to discuss in detail because of their wider variety of subject matter.

There are a great number and variety of private commercial schools, trade schools and technical schools.

In later collages of both masters, a variety of extraneous materials are used, sometimes in the same work, and almost always in conjunction with every other eye-deceiving and eye-undeceiving device they can think of.

The downtown store continues to offer the great inducement of variety, both within its gates and across the street, where other department stores are immediately convenient for the shopper who wants to see what is available before making up her mind.

High nutritional value, variety, palatability, and appetizing appearance are important for reasons of morale.

`` However, evidence that the Axis powers are making significant preparations indicative of such an intention is being reported with increasing frequency from a variety of sources.

In the parapsychology foundation's long-range experiment, readings are made by a variety of sensitives for a large number of cooperating sitters, trying to throw light on this question of the significance of mediumistic statements.

A variety of techniques are used with multiple factor ANOVA to reduce

A wide variety of prizes are awarded to architects to acknowledge superior buildings, structures and professional careers.

Extensive miniature woods of heaths are found in almost endless variety and covered throughout the greater part of the year with innumerable blossoms in which red is very prevalent.

The first major application was the relative version of Serre's theorem showing that the cohomology of a coherent sheaf on a complete variety is finite dimensional ; Grothendieck's theorem shows that the higher direct images of coherent sheaves under a proper map are coherent ; this reduces to Serre's theorem over a one-point space.

Argentines enjoy a wide variety of non-alcoholic infusions ( although now and then both " families " are mixed ; the yerbiao for example, is mate mixed with caña or gin ).

The variety of sandwiches are nearly infinite.

A variety of galling insects are among the most specialized and diverse herbivores on the planet, and their extensive protections against abiotic stress factors have helped the insect in gaining that position of honor.

Stand-alone, file based, multi-track recorders from Sound Devices, This of course results in a reduction in audio quality, but a variety of techniques are used, mainly by exploiting psychoacoustics, to remove the data that has least effect on perceived quality.

Alkaloids are produced by a large variety of organisms, including bacteria, fungi, plants, and animals, and are part of the group of natural products ( also called secondary metabolites ).