87 citations · 177 across the 6 of their papers we have counts for
6 papers
Origin of the Background Absorption in Carbon Nanotubes: Phonon-Assisted Excitonic Continuum
Stefano Dal Forno, Natsumi Komatsu, Michael Wais +8
Excitonic effects in 1D semiconductors can be qualitatively different from those in higher dimensions. In particular, the Sommerfeld factor, the ratio of the above-band-edge excito…
Giant Terahertz Polarization Rotation in Ultrathin Films of Aligned Carbon Nanotubes
Andrey Baydin, Natsumi Komatsu, Fuyang Tay +4
For facile manipulation of polarization states of light for applications in communications, imaging, and information processing, an efficient mechanism is desired for rotating ligh…
Groove-Assisted Global Spontaneous Alignment of Carbon Nanotubes in Vacuum Filtration
Natsumi Komatsu, Motonori Nakamura, Saunab Ghosh +7
Ever since the discovery of carbon nanotubes (CNTs), it has long been a challenging goal to create macroscopically ordered assemblies, or crystals, of CNTs that preserve the one-di…
Single-Walled Carbon Nanotube Sample Purification
Saunab Ghosh, Sergei M. Bachilo, R. Bruce Weisman
Removal of impurities and aggregates from as-grown single walled-carbon nanotube (SWCNT) materials remains an important challenge in nanotube research and applications. We report a…
Biexciton, single carrier, and trion generation dynamics in single-walled carbon nanotubes
Bertrand Yuma, Stéphane Berciaud, Jean Besbas +10
We present a study of free carrier photo-generation and multi-carrier bound states, such as biexcitons and trions (ionized excitons), in semiconducting single-walled carbon nanotub…
Enrichment of Armchair Carbon Nanotubes via Density Gradient Ultracentrifugation: Raman Spectroscopy Evidence
E. H. Haroz, W. D. Rice, B. Y. Lu +5
We have used resonant Raman scattering spectroscopy to fully analyze the relative abundances of different (n,m) species in single-walled carbon nanotube samples that are metallical…