In our previous research, we have demonstrated a sophisticated computer-assisted drawing program called Druid, which permits easy construction of 21/2D scenes. A 21/2D scene is a representation of surfaces that is fundamentally two-dimensional, but which also represents the relative depths of those surfaces in the third dimension. This paper improves Druid’s efficiency by exploitating a topolog...

A method of two-dimensional infrared (2D IR) spectroscopy called relaxation-assisted 2D IR (RA 2DIR) is proposed that utilizes vibrational energy relaxation transport in molecules to enhance cross-peak amplitudes. This method substantially increases the range of distances accessible by 2D IR and is capable of identifying long-range connectivity patterns in molecules. RA 2DIR is illustrated in i...

Electronic two-dimensional Fourier transform (2D-FT) spectroscopy is applied to semiconducting single-walled carbon nanotubes and provides a spectral and time-domain map of exciton-phonon assisted excitations. Using 12 fs long pulses, we resolve side-bands above the E(22) transition that correspond with the RBM, G, G', 2G and other multiphonon modes. The appearance of 2D-FT spectral cross-peaks...