Precise detection of circular dichroism in a cluster of nano-helices by photoacoustic measurements
Compact samples of nano-helices built by means of a focused ion beam technology with large
bandwidth and high dichroism for circular polarization are promising for the construction of built-in-chip
sensors, where the ideal transducer must be sufficiently confined without compromising its filtering
ability. Direct all-optical measurements revealed the sample’s dichroic character with insufficient details
because of scattering and diffraction interference. On the other hand, photoacoustic measurements