Since the 1980s, scientists have known that solitons can carry an electrical charge when traveling through certain organic polymers. A new study now suggests that solitons have intricate internal structures.
Scientists may one day use this information to put the particles to work in molecular electronics and artificial muscles, said Ju Li, assistant professor of materials science and engineering at Ohio State University.
Li explained that each soliton is made up of an electron surrounded by other particles called phonons. Just as a photon is a particle of light energy, a phonon is a particle of vibrational energy.
The new study suggests that the electron inside a soliton can attain different energy states, just like the electron in a hydrogen atom. The soliton’s quantum mechanical properties — including these newly discovered energy states — are important because they affect how the particle carries a charge through organic materials such as conducting polymers at the molecular level.
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