Sentences with phrase «molecules in a vacuum»

Though it enables precise atom - by - atom fabrication of nanostructures, the process is very slow because the low density of adsorbed gas molecules in the vacuum environment limits the amount of material available for fabrication.

It is possible that this handedness is produced by the interaction of ultraviolet radiation with icebound organic molecules in a vacuum.

And yes, a stationary molecule in a vacuum in deep space, with no interractions with other molecules which recieves little or no radiative energy, will aproximate to near absolute zero.

Not exact matches

If you're a scientist, you know molecules interacting in space with a volume the size of the universe even in a vacuum is not only improbable but it goes against every law of thermodynamics.

A laser in the vacuum ultraviolet range — the Dalian facility will cover 50 — 150 nanometers — «has a soft touch,» he says, making it «the best way to detect molecules and atoms in a gas.»

The Dalian Coherent Light Source, whose completion was announced today in Beijing, has a twist that makes it unique: It is the only large laser light source in the world dedicated to the particular range of short - wavelength light called vacuum ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germany..

Another drawback: The material must be in a vacuum in the microscope and that causes water within biological molecules to evaporate, distorting their shapes.

Applying electron microscopy to biology was a challenge because the technique is done in a vacuum, which can dry out and distort the shape of proteins and other biological molecules.

As molecules tumble in the near vacuum of interstellar space, they give off a distinctive signature, a series of telltale spikes that appear in the radio spectrum.

Hudson's laboratory used laser light to cool tiny amounts of the reactant atoms and molecules to an extremely low temperature — one one - thousandth of a degree above absolute zero — and then levitate them in a space smaller than the width of a human hair, inside of a vacuum chamber.

In the new study, researchers placed tiny particles of silicon carbide (one represented by the group of tan molecules in this artist's concept) covered with graphite (hexagonal networks of gray atoms) in a vacuum chamber that duplicated the deep - space conditions surrounding many stars (temperatures between 900 and 1500 kelvins and pressures less than one - billionth that found at Earth's surfaceIn the new study, researchers placed tiny particles of silicon carbide (one represented by the group of tan molecules in this artist's concept) covered with graphite (hexagonal networks of gray atoms) in a vacuum chamber that duplicated the deep - space conditions surrounding many stars (temperatures between 900 and 1500 kelvins and pressures less than one - billionth that found at Earth's surfacein this artist's concept) covered with graphite (hexagonal networks of gray atoms) in a vacuum chamber that duplicated the deep - space conditions surrounding many stars (temperatures between 900 and 1500 kelvins and pressures less than one - billionth that found at Earth's surfacein a vacuum chamber that duplicated the deep - space conditions surrounding many stars (temperatures between 900 and 1500 kelvins and pressures less than one - billionth that found at Earth's surface).

Scientists have to use a scanning electron microscope, which must peer at objects in a vacuum because air molecules absorb the electrons that the microscope depends on to take the picture.

Since electron microscopes can only operate in a high vacuum, as molecules in the air disrupt the electron beam, and since liquids evaporate in high vacuum, aqueous samples must either be freeze - dried or hermetically sealed in special cells.

Adopting the scheme of chemical disorder, which has been proved to successfully capture the variety of eumelanin protomolecules, we show that (1) the formation process of eumelanin protomolecules from the constituting monomers is generally hindered in a solvent environment with respect to vacuum and (2) key factors in improving the adhesion properties and band lineup of the molecules on an inorganic interface are the molecular electronic state and the planarity of their structures.

Suppose you somehow started only with a layer of molecules in the middle, and a vacuum above and below in a sealed container.

Early in the 19th century, scientists began to speculate that the Earth, surrounded by the frigid vacuum of space, was habitable because its atmosphere contained special molecules like CO ₂ and water vapor, molecules that can absorb heat rays emanating from the Earth and thereby trap its heat.

The radiated energy in a vacuum flask passes directly from one wall to the other and is unlikely to affect the temperature of the few molecules of air that remain in the near perfect vacuum.

It is difficult to convey how unlikely it really is, but Dewitt's example of all of the air in the room bouncing just right and ending up as a drop of liquid air over in a corner leaving you gasping in a vacuum that happens to maintain itself because air molecules just don't seem to have the right directions to bounce back into the room — that sort of unlikely.

Moreover, since gas molecules don't absorb IR across the spectrum but only on molecular lines, cutting off the radiative heat flow would not be nearly as effective as simply silvering the walls and pulling a vacuum in the void between the walls.

But in a vacuum, there are no molecules...

Unless the molecule exists in a vacuum, that bond motion will result in the molecule pushing against neighboring molecules.

This microscope can operate in extreme vacuum conditions eliminating the interference by air molecules and various other contaminations.