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Photochemical logic gate : ウィキペディア英語版
Photochemical logic gate

A photochemical logic gate is based on the photochemical intersystem crossing and molecular electronic transition between photochemically active molecules, leading to logic gates that can be produced.
==The OR gate electron–photon transfer chain==

_A
*                    A
* = excited state of molecule A

       _B
*

            _C
*
_A  _B  _C
The OR gate is based on the activation of molecule A, and thus pass electron / photon to molecule C’s excited state orbitals ( C
*). The electron from molecule A inter system crosses to C
* via the excited state orbitals of B, eventually utilised as a signal in the C
* h\upsilon_ emission. The ‘OR’ gate uses two inputs of light (photons) to molecule A in two separate electron transfer chains, both of which are capable of transferring to C
* and thus producing the output of an OR gate. Therefore, if either electron transfer chain is activated, molecule C’s excitation produces a valid/ output emission.
Input    Input

A                D

\searrow        \swarrow

    B        E

    \searrow\swarrow

         C

   output


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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