Sentences with phrase «electron cloud»

Once the researchers have worked out the make - up of electron cloud the true chemical nature of the molecule and its most reactive regions emerges.

Spectroscopy, for example, infers these changes from the way laser light interacts with electron clouds around atomic nuclei, and requires theoretical calculations to turn these data into a picture of the nuclear geometry.

Circle - and rod - shaped blobs represent spherical and elongated electron clouds on the manganese atoms.

An atom consists of a dense nucleus of positively - charged protons and electrically - neutral neutrons, surrounded by a much larger electron cloud consisting of negatively - charged electrons.

Mezey says that conventional techniques for drawing electron clouds have been restricted to molecules containing around 100 atoms, such as vitamins and small peptides.

«The shape of an atom's electron cloud depends on the spin direction,» Kubetzka says, so adjusting the spin altered the appearance of the dimples in the images.

The figure is often abstracted — be it simplified into a boxy, geometric tower that expands aggressively into space or a ghostly figure situated in the middle of a contained electron cloud, among other forms.

Now we believe in nuclei and electron clouds.

Although X-rays deeply penetrate the electron clouds, interacting with the electrons closest to the nuclei, they don't yet do so with high enough resolution to precisely determine the nuclear positions in current femtosecond X-ray studies.

«The light emitted by a molecule depends on the shape of its electron cloud, which can be sculptured by modern lasers,» Bondar said.

Unlike normal light sources, this ultrafast laser pulse is strong enough to interact with molecules and distort their electron cloud while not actually changing their identity.

Mezey says that for every doubling of the size of a molecule, 16 times as much computing power is required to work out the shape of the electron cloud.

Mezey works out the overall geometry of a molecule after taking into account how neighbouring subgroups distort each other's electron clouds.

He says that besides establishing he shape of known molecules, the system can model the electron clouds of imaginary molecules, which could be very useful in drug research.

If they know the shape of the molecule's electron cloud they have a better idea how it will react with other molecules, and how to block or enhance its activity.

The computer system generates coloured images of the electron clouds that swirl around atomic nucleii and define the true shape and chemical character of molecules.

«If two molecules react, it's the electron clouds that interact.

The process is complicated by the fact that the shape of an electron cloud is heavily influenced by its surroundings.

«The electron cloud shapes are linked to the magnetic attributes of the electrons,» Yin explained.

«When the magnetic moments of the electrons are aligned in a magnetic field, the electron cloud shape and the atomic arrangement become more symmetric and homogenous.

So an elongated electron cloud, when entering a symmetrical atomic space, begins to assume a more spherical shape, while at the same time, the atoms that make up the lattice, shift positions to try to accommodate the elongated electron cloud.

«The electric field around the cell pushes away electrons in graphene's electron cloud,» he said, which changes the vibration energy of the carbon atoms.

Because the magnetic field around a white dwarf (artist's concept of Z Camelopardalis, small star in image above) can be hundreds of thousands of times the strength of Earth's magnetic field, it can actually distort the shape of the electron clouds around atoms.

This involves a light particle (photon) exciting the electron cloud of a gold nanoparticle so that it starts oscillating.

«You see a hydrogen atom, you see the electron clouds around it.

These simulations took into account the mutable shape of the electron clouds around each atom.

In another series of simulations, they did not include the electron cloud around the ion and solvent.

In one series of simulations, the researchers considered that the electron cloud might not be a perfect sphere around the ion and solvents.

Filaments of hot gas host these electron clouds.

The models can be viewed in either the traditional Bohr model, which shows an atom with a central nucleus with electrons in orbit around it, or with the quantum mechanical model, which shows off the atom as an electron cloud.