Dopant
A dopant, also called a doping agent, is a trace impurity element that is inserted into a substance (in very low concentrations) to alter the electrical or optical properties of the substance. In the case of crystalline substances, the atoms of the dopant very commonly take the place of elements that were in the crystal lattice of the base material. The crystalline materials are frequently either crystals of a semiconductor such as silicon and germanium for use in solid-state electronics, or transparent crystals for use in the production of various laser types; however, in some cases of the latter, noncrystalline substances such as glass can also be doped with impurities.
Semiconductors
In solid-state electronics, using the proper types and amounts of dopants in semiconductors is what produces the p-type semiconductors and n-type semiconductors that are essential for making transistors and diodes.
The addition of a dopant to a semiconductor, known as doping, has the effect of shifting the Fermi levels within the material. This results in a material with predominantly negative (n-type) or positive (p-type) charge carriers depending on the dopant variety. Pure semiconductors that have been altered by the presence of dopants are known as extrinsic semiconductors [See: intrinsic semiconductor]. Dopants are introduced into semiconductors in a variety of techniques: solid sources, gases, spin on liquid, and ion implanting. See ion implantation, surface diffusion, and solid sources footnote.
Dopant (Kamen Rider)
The Dopants (ドーパント, Dōpanto) are the fictional antagonists in the Kamen Rider Series Kamen Rider W. Dopants are normal humans who use Gaia Memories. The Gaia Memories are aspects of the true Gaia Memory (地球の記憶, Chikyū no Kioku), the knowledge of everything on the Earth. These were originally accessed due to Philip's link to the Gaia Memory by means of the Gaia Library (地球（ほし）の本棚, Hoshi no Hondana). But after he was taken from them, the Sonozaki Family uses a strange temple underneath their mansion to access the Gaia Memory. They then sell these to the highest bidder or to common criminals, both types used as guinea pigs to study the Gaia Memories as part of the Gaia Impact project. The name comes from the English words "dopant" and "doping".
Gaia Memories
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Why
by: Da BandOpen the book
And I saw an angel come down from heaven
Having the key of the bottomless pit
And a great chain in his hand
I laid whole on the dragon, That old serpent
Which is the Devil, and Satan, and born in a thousand years
I'm the soldier type, keep grip on steel like Conan
Money bulgin' out my pockets, I peel with both hands
Inter-national dopeman, known as a D-Boy
If ya need me nigga, know you can call on the decoy
Me, All I do is move blow off tha corner
Paper chasin', cause I'm tryin to stack doe like colma, (Watch me)
I'm tryin' to keep my head on tight
Baller blockers make a nigga wanna ride at night
Block watchers callin' coppers so my mind ain't right
The Devil with me but the young boy acknowledge Christ
I did alot of ridin' in my time, and God blessed me still
I look out for tha one the knocks
So why the Devil keep on fuckin' with me, why
Why he knockin' at my door, my door
Why the Devil keep on fuckin' with me
Can you tell me why he huntin' me for
Tell me what he huntin' me for, tell me
Could you tell me
Could you tell me what he huntin' me for
Tell me what he huntin' me for
Could you tell me, tell me
Could you tell me what he huntin' me for
You thinkin' lifes a joke, I'll slice your throat
Oh you a thug, you about to get yo' rights revoked
I'm from the Dirty, we don't even know the price of soap
I'm a star, look in the sky, you need a microscope
I'm way ahead of the game, thuggin' runs in my veins
My pockets chubby, so I went and got a gun in my name
Its just me, him and my blunt in the Range
A young nigga with the filty slang
Ha ha, I hop out like a Jack In The Box
With three macks and a glock
I'm askin' for nothin', I'm snatchin' my props
I'm gettin' money while I'm laughin' at cops
It ain't ya lad, I ain't bad
It's the Devil, why don't you tell'em to stop
Its like somebodys lookin' over my shoulder
Its hard to focus in the open I'm surrounded by vultures
So many haters I don't know where to turn
And niggaz be starin' us down like we got money to burn
First things first, I'm sick of all you industry thugs
You feel me, You a enemy if anything cuz
In memory of
Death to the powers that be
See I'm a motherfuckin' soldier ain't no coward in me
Somebody is constanly watching and following me
Throw shades over my eyes, Wont allow me to see
Allow me to peek
Forget about reading the fine print
My lyrical content on some Vietnam shit
Shoot 99% dogg, top of the line
I'm back on my grind
Satan in the back of my mind
Go a-head with the bullshit, tomorrow ain't promised
I'm pushin' the rock to stop from getting knocked unconscious
Though I walk through the valley of the shadow of death
I will fear no evil, for thou walk with me
It's Bad Boy baby, we done seen the ups and downs
Sunny days, rainy days, we'll never stop
Da Band, the next generation, God first
And we won't stop, Yea, Lets go
Yea, get off me, get off me
You know what team I'm on
One God, One love, One family, Bad Boy
I'm like Micheal baby
Dark Angel, Yea, You feel me
I see all you Devils out there
You'll never stop us
Da Band, 2003, The next generation