Sentences with phrase «single hydrogen atoms»

Both materials were then sprayed with hydrogen gas in which the bonds were broken to form single hydrogen atoms.

An easy - to - measure current density of one microampere per square centimeter corresponds a stream of about six trillion (6 × 10 ^ 12) single hydrogen atoms per second per square centimeter.

Electrical engineers Joseph Lyding and Mark Hersam of the University of Illinois developed a technique for plucking single hydrogen atoms from a silicon sheet, which may lead to a millionfold increase in the number of transistors that can be packed onto a chip.

Each cluster consists of hydrogen molecules arranged around a negatively charged hydrogen ion — a single hydrogen atom with an extra electron — at temperatures near absolute zero, the researchers report in the Dec. 30 Physical Review Letters.

DNA's twisted ladder structure requires rungs of hydrogen bonds to hold it together; each bond is essentially made up of a single hydrogen atom that unites two molecules.

Not exact matches

Each hydrogen atom, made up of just a single proton and electron, can be found in two slightly different states: a higher energy state in which the electron and proton essentially spin in the same direction, and a lower energy state in which they spin in opposite directions.

As the gas becomes denser, two hydrogen atoms could occasionally combine to form a single hydrogen molecule.

They are also all saturated fats, chains of single - bonded carbon atoms with hydrogen atoms neatly lined up on either side of each carbon.

Rafiee is developing a way to line a hydrogen vehicle's fuel tank with a one - atom - thick layer of graphene, essentially a sheet of single - walled carbon nanotubes that have been opened up and laid flat, so that the tank can better store and release hydrogen.

• Stars like the sun produce energy by fusing two hydrogen atoms into a single helium atom.

Water is a simple molecule resembling a pair of Mickey Mouse ears: two hydrogen atoms grab a single oxygen atom.

Herein we demonstrate that a photoredox - mediated hydrogen atom transfer protocol can efficiently and selectively install deuterium (D) and tritium (T) at α - amino sp3 carbon - hydrogen bonds in a single step, using isotopically labeled water (D2O or T2O) as the source of hydrogen isotope.

Polyethylene consists of a chain of single - bonded carbon atoms, each still carrying its two hydrogen atoms.

The single - atom transistor is made by carving a slot in a hydrogen - coated silicon wafer with a tunneling electron microscope and depositing a single phosphorus atom in the hole.

To dictate the exact position of their single atom, Michelle Simmons at the University of New South Wales, Australia, and colleagues started by covering a silicon sheet with a layer of hydrogen.

The hydrogen atom consists of a single negatively charged electron bound to a single positively charged proton.

The Tufts chemists used a specialized low temperature scanning tunneling microscope to visualize the single platinum atoms and their interaction with hydrogen.

In the early 2000s, Maria's group had pioneered the single - atom approach for metals anchored on oxide supports as the exclusive active sites for the water - gas shift reaction to upgrade hydrogen streams for fuel cell use.

The issue first raised its head in 2015, when a team led by Edmund Myers at Florida State University measured the difference in masses of the nucleus of a helium - 3 atom and a deuteron — the nucleus of a deuterium or heavy hydrogen atom — with a single proton bound to...

The team used a novel technique that involves replacing the electrons in hydrogen atoms with negatively charged particles called muons, and then measuring subtle shifts in the energy that is required to bump a muon into a higher - energy orbit around the single - proton nucleus.

Of the nuclei, most are single protons - the nuclei of hydrogen atoms - but a few are much heavier, ranging up to the nuclei of lead atoms.

As hydrogen atoms move about in space, they can absorb small amounts of energy, sending the atom's single electron to a higher energy state.

Indeed, the team is expanding their study to the properties of the nearly ubiquitous hydronium and methyl groups, which contain a single oxygen or carbon atom and three hydrogen atoms.

The presence of ozone helps to explain the detection of hydroxyl (an unstable molecule of oxygen with a single atom of hydrogen) high in planet's atmosphere in 2008 (ESA news releases on ozone, sulfur dioxide, and hydroxyl; Lisa Grossman, New Scientist, October 6, 2011; and Montmessin et al, 2011).

Diffuse emission nebulae are often called H II regions because they are mainly consisted of ionized hydrogen, H II - the roman number after the element symbol (here H) designating the ionization level: «I» would stand for neutral atoms, the «II» here means first ionization, i.e. the hydrogen atoms have lost their single electron, and for other elements higher numbers (ionization levels, or numbers of lost electrons) would be possible (e.g., He III, O III or Fe V).

Without getting too technical, methylation is the addition of a single carbon and three hydrogen atoms (called a methyl group) to another molecule.

We can calculate and quantify the jitter, in terms of the existence on the most prevalent single unit piece of existence, the hydrogen atom.

Methane consists of a single carbon atom surrounded by four hydrogen ones, giving the gas its chemical assignation of CH4.

The Bohr model of the hydrogen atom: a dense nucleus containing the hydrogen atom's single proton (and possibly one or more neutrons), surrounded by an electron that can be on one of several different orbits.