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Updated: Jun 13, 2026

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
Published on: August 18, 2017
Investigation of the chiral origins of electromagnetic activity
1School of Engineering, University of British Columbia, 3333 University Way, Kelowna, British Columbia, Canada. kenneth.chau@ubc.ca
Abstract:
Electromagnetic activity of a single, subwavelength helix is explored under transverse illumination with terahertz electromagnetic pulses. By measuring the phase accrual difference between right- and left-circularly polarized components of the pulse transmitted through a series of identically shaped helices, where sections of each helix have been systematically removed, a linear relationship is discovered between the electromagnetic activity of a helix and its thickness in the propagation direction of the electromagnetic wave. A single helix is thus shown to possess intrinsic electromagnetic activity, describable by an effective circular birefringence.
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