Sentences with phrase «nanometer particles»

But locating the cells that contain the 50 - nanometer particles has been like looking for a needle in a haystack, in part because the tissue - dissolving methods used to identify magnetite turn biological samples to mush.

However, in another experiment, the team found that sapwood was unable to separate out 20 - nanometer particles from water, suggesting that there is a limit to the size of particles coniferous sapwood can filter.

They use sub-100 nanometer particles in low - enough concentrations that they don't limit flow but still make efficient use of their heat - transfer and storage properties.

Not exact matches

Quantum dots are semiconductor particles only a few nanometers wide — small enough that they behave like individual atoms.

Airborne particles smaller than 50 nanometers across can intensify storms, particularly over relatively pristine regions such as the Amazon rainforest or the oceans, new research suggests.

He worked on osmosis and colloids, which are suspensions of nanometer - sized particles.

The microscope's nanometer resolution will allow researchers to track particles floating in colloidal solutions (for example, nanoscale beads floating in a sample of paint) using equipment that is at least a tenth of the cost of an electron microscope.

The researchers synthesized batches of two different single DNA strands, then attached each strand to its own 20 - nanometer - wide gold particle.

The HIV particle has a diameter between 100 and 180 nanometers.

It includes everything from huge boulders to particles only a few nanometers in diameter, but most of it is a puree created by uncountable high - speed micrometeorites that have been crashing into the moon unimpeded by atmosphere for more than 3billion years.

Magnetospirillum cells contain a number of small particles of magnetite (Fe3O4), each approx. 45 nanometers wide.

They can therefore be employed to observe particles with dimensions of less than 1 nanometer, such as atoms.

The study showed that seven - nanometer copper particles deposited on graphene doped with pyridinic nitrogen (an arrangement that causes nitrogen atoms to be bonded to two carbon atoms) had the best performance.

Rescue workers and those who survived the Twin Towers» collapse were bathed in the dust, which contained particles of sizes ranging from the millimeter scale down to nanometers in width, the right size to embed deep in the lungs if inhaled.

Globally about half the CCN originate from a secondary process which involves the formation of small clusters and particles in the very first step followed by growth to sizes of at least 50 nanometers.

Doxorubicin is administered by way of nanometer - sized carrier particles.

Larger aerosol particles greater than 100 nanometers, such as soot or black carbon, are known to help seed clouds.

But this could change: a new finding shows that nanometer - sized particles can generate electrical charges from sunlight more efficiently than any semiconductor tested before.

«This will enable us to image chemical phases within the smallest available particles, often less than 100 nanometers in size, and still give us the penetrating power to look at large volumes of material, such as thousands of battery particles.

At their core is a network of titanium dioxide (TiO2) particles, each just a couple of tens of nanometers across, coated with a film of organic dye.

Although the product didn't contain nanoparticles — the problems were ultimately traced to the formation of a super-thin film — the incident put the concept of nanomaterials (which incorporate particles or components measuring less than 100 nanometers, or about 1/250, 000 inch) squarely in the public eye and raised the question of how to harness their potential while addressing their potential risks.

Although the coating looks smooth to the naked eye, it actually contains 10 to 20 layers of particles, each only seven nanometers in diameter, with air pockets between the particles.

Quantum dots are extremely small semiconductor particles only a few nanometers in size.

However, the health of the entire population pays a high price: substitution of gasoline for ethanol leads to a 30 % increase in the atmospheric concentration of ultrafine particulate matter, which consists of particles with a diameter of less than 50 nanometers (nm).

Rice scientists mixed very low concentrations of diamond particles (about 6 nanometers in diameter) with mineral oil to test the nanofluid's thermal conductivity and how temperature would affect its viscosity.

One particle is only 500 nanometers in size, which is 150 times smaller than the diameter of a human hair.

The future of data storage is likely to be found in nanometer scale, stable magnetic whirls called skyrmions, which behave like particles in magnetic thin films.

Particles of cornstarch are just the right size (about 100 to 800 nanometers in diameter) to make a colloidal solution with water.

Background Colloidal solutions (also called colloidal suspensions) contain little particles, ranging from one to 1,000 nanometers in diameter.

Taking child's play with building blocks to a whole new level - the nanometer scale - scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have constructed 3D «superlattice» multicomponent nanoparticle arrays where the arrangement of particles is driven by the shape of the tiny building blocks.

Scientists demonstrated the efficiency and versatility of their method by using it to print a copy of 17th - century mystic philosopher Robert Fludd's image of the sun (the alchemist's symbol for gold) using about 20,000 gold particles, each of them 60 nanometers in diameter.

This experiment showed that sapwood is naturally able to filter out particles bigger than about 70 nanometers.

Before experimenting with contaminated water, the group used water mixed with red ink particles ranging from 70 to 500 nanometers in size.

At the nanometer scale, gold particles are very chemically reactive and make excellent catalysts.

The new technology promises to allow scientists, medical professionals and technologists to for the first time place particles smaller than 100 nanometers precisely where they are needed.

The particles average between 30 and 40 nanometers in size.

The haze results from chemical reactions in the upper atmosphere, where ultraviolet radiation from the sun ionizes nitrogen and methane, which react to form tiny hydrocarbon particles tens of nanometers in diameter.

Semiconductor nanocrystals, or quantum dots, are tiny, nanometer - sized particles with the ability to absorb light and re-emit it with well - defined colors.

Currently qubits based on a particle's spin direction must be positioned about 15 nanometers apart — any more, and their entanglement fails.

The scientists beamed light flashes lasting only a few hundred attoseconds onto 50 nanometer thick glass particles, which released electrons inside the material.

Structural information on nanometer - sized gold particles has been limited, due in part to the problem of preparing homogeneous material.

Nanotechnology involves the manipulation of teeny particles, measuring between one and 100 nanometers.

These are iron oxide particles just 3 nanometers across, coated with a zwitterion layer.

Solid hydrocarbon particles tens of nanometers wide clump together in the atmosphere to form the haze before eventually settling onto Pluto's surface (SN: 4/15/17, p. 14).

The concern: whether there's a risk these microscopic particles, measuring up to 100 nanometers in length (a nanometer is 40 millionths of an inch), can enter the lungs of chemical workers and become lodged in tissue there and in their throats.

The researchers placed particles of gold ranging in diameter from 15 to 30 nanometers in a fluid suspension within a thin chamber located between two electrodes.

A new process uses a cerium - based material made into nanometer - sized particles with a palladium catalyst to produce cyclohexanone, a key ingredient in the production of nylon.

In recent years Lin's team devised a method to produce particles that are all between 20 and 40 nanometers in size (a nanometer is one - billionth of a meter), a range best able to elude macrophages.

The process uses a cerium - based material made into nanometer - sized particles with a palladium catalyst to produce cyclohexanone, a key ingredient in the production of nylon.

But their novel delivery system, which relies on the intravenous delivery of 40 - nanometer - wide particles to carry the drug, may actually avoid much of the photosensitivity, because less Photofrin circulates in the bloodstream thanks to a peptide called F3.