Browsing by Author "Tang, Yiqiao"

Now showing items 1-5 of 5

    • Chirality of Light and Its Interaction with Chiral Matter 

      Tang, Yiqiao (2013-03-18)
      This thesis conducts a systematic study on the chirality of light and its interaction with chiral matter. In the theory section, we introduce a measure of local density of chirality, applying to arbitrary electromagnetic ...

    • Chiroptical Hot Spots in Twisted Nanowire Plasmonic Oscillators 

      Tang, Yiqiao; Sun, Li; Cohen, Adam Ezra (AIP Publishing, 2013)
      We image the chiroptical response of crossed nanowire junctions as a function of the vertical offset between the nanowires and the incident wavelength. These samples show chiroptical “hot spots” with strongly localized ...

    • Limits on Fluorescence Detected Circular Dichroism of Single Helicene Molecules 

      Tang, Yiqiao; Cook, Timothy A.; Cohen, Adam Ezra (American Chemical Society, 2009)
      Fluorescent imaging of single helicene molecules is applied to study the optical activity of chiral fluorophores. In contrast to the previous report by Hassey et al. (Science 2006, 314, 1437), the dissymmetry factors of ...

    • Optical Chirality and Its Interaction with Matter 

      Tang, Yiqiao; Cohen, Adam Ezra (American Physical Society, 2010)
      We introduce a measure of the local density of chirality of the electromagnetic field. This optical chirality determines the asymmetry in the rates of excitation between a small chiral molecule and its mirror image, and ...

    • Spectroscopy in Sculpted Fields 

      Yang, Nan; Tang, Yiqiao; Cohen, Adam Ezra (Elsevier, 2009)
      Metallic and magnetic nanostructures set electromagnetic boundary conditions which can lead to highly contorted fields in their immediate vicinity. While much attention has been devoted to enhancements in electric field ...