Abstract
Publisher Summary Amplitude modulation (AM) and frequency modulation (FM) can be used to transmit information in molecular wires usingmolecular vibrations with a power dissipation of ∼50nW when working at 1 Tbps. These kinds of vibrational movements are at the range of terahertz. The vibrational modes can not only be excited by an electromagnetic wave, but can also be detected using infrared (IR) spectroscopy or Raman spectroscopy if their movements cause changes in the electrostatic dipole (IR active) or in polarizability (Raman active). When the signal is transferred using molecular vibrational modes, the atoms vibrate to a certain position, which may introduce a change in the molecular electrostatic potential (MEP) distribution of the whole molecular system. This change is subsequently transferred through vibronics. Thus, by proper programming, the hundreds of molecules inside the nanocell can be viewed as signal-processing devices. If information is transmitted using vibronics, the power dissipation can be evaluated from the energy that excites and keeps the molecular wire to vibrate.
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