dopant
doping agent

The amount of dopant is usually measured in atomic percent.

The amount of the neodymium dopant in the material varies according to its use.

It has also been used as a silicon dopant in epitaxial layers.

Zinc is used as a dopant for the p-type semiconductor.

Usually the thermal energy available at room temperature is sufficient to ionize most of the dopant.

Depending on the concentration of the dopant, synthetic ruby usually comes in either pink or red.

The dopant, potassium, hopped onto the molecule, immediately changing its charge.

There are no similar tools available for accurate high resolution measurement of dopant or stress profiles.

Antimony is used as a dopant in electronics.

By using a sufficiently cold temperature, both water and dopant are frozen in solution together forming an ice sheet.

Laser host materials are chosen to have a low absorption; only the dopant absorbs.

Boron-11, used at low concentrations as a p-type dopant, does not contribute to soft errors.

Naturally blue diamond, which includes a trace of boron that acts as a dopant.

Usually the concentration of optical dopant is of order of few percent or even lower.

In trace amounts, phosphorus is used as a dopant for n-type semiconductors.

With 4 at% dopant, the group obtained a slope efficiency of 40%.

A difference as fine as one atom of dopant or two can, for example, change the voltage at which a device switches.

SbI has been used as a dopant in the preparation of thermoelectric materials.

The value of depends strongly on electrostatics, however, so under some circumstances it is possible to de-ionize the dopant.

It is a dopant in some types of glass in lasers and other optoelectronic devices.

Besides the mobility, the ionization potential of the polymer and the respective dopant has also significant importance.

Boron is the most common etch-stop dopant.

These events weaken the Virus Dopant, but also enables it to infect electronics.

The thorium dopant in the electrodes greatly enhances their electron emission characteristics.

However, the Luna Dopant arrives to drag Double off.

Why, might you think, is coffee officially considered a doping agent at the Olympic Games?

Most disagree with this assertion, pointing out the claimed harmful long-term effects of many doping agents.

In microelectronics, diethylzinc is used as a doping agent.

Besides Eu also Tb can be used as a doping agent leading to green luminescence.

Ruthenium(IV) oxide is a versatile catalyst and doping agent.

It is known to be used as a doping agent to increase the secretion of glucocorticoids by adrenal glands.

It is included on the World Anti-Doping Agency list of illegal doping agents in sport.

Like all previous generations of EPO, the drug has made its appearance as a doping agent in endurance sport.

After the race finished, the news came that Kohl had used CERA, a doping agent.

Typical doping agents include nitrocellulose, cellulose acetate and cellulose acetate butyrate.

We're talking EPO and testosterone, bread-and-butter doping agents."

At this time Erythropoietin (EPO) was becoming a widely used doping agent in the sport.

Mircera can reportedly replace traditional EPO drugs as blood doping agent in endurance sports.

"According to these classified files, all Borg computer circuits encountered up to now universally contain traces of a distinctive tridithalifane doping agent in their subprocessors.

Since its introduction in 1992 Humatrope has been a banned sports doping agent, and in this context is referred to as HGH.

In electrochemistry, nitric acid is used as a chemical doping agent for organic semiconductors, and in purification processes for raw carbon nanotubes.

Boron oxide will also form during semiconductor production when the doping agent diborane (BH) reacts with oxygen in the air or trace amounts of moisture:

In the raids Friday, the police were said to have seized doping agents, syringes, notebooks, computer disks and $60,000 in cash at the house and office of Lavelot.

Telmisartan's activity at the PPAR-γ receptor has prompted speculation around its potential as a sport doping agent as an alternative to GW 501516.

In a series of experiments, the M.I.T. group inserted a small amount of a metal doping agent, or additive, to the lithium iron phosphate that markedly improved its conductivity.

An extrinsic semiconductor is a semiconductor that has been doped, that is, into which a doping agent has been introduced, giving it different electrical properties than the intrinsic (pure) semiconductor.

Currently, use of modafinil is controversial in the sporting world, with high profile cases attracting press coverage since several prominent American athletes have tested positive for the substance (see Modafinil as a doping agent).

After his victory in the 2008 Six Days of Ghent, both his A and B samples tested positive for cathine and a diuretic which has been used to mask the presence of doping agents.

A dopant, also called a doping agent, is a trace impurity element that is inserted into a substance (in very low concentrations) in order to alter the electrical properties or the optical properties of the substance.

"But what binds these cases together is the mind-set that would enable somebody to dope, knowing that they are going to get caught, and knowing they are going to get caught for known doping agents," he said.