Coupling of photon energy via a multiwalled carbon nanotube array

Qi Lu, Rahul Rao, Bindu Sadanadan, William Que, Apparao M. Rao, Pu Chun Ke

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)


Fluorescent beads were excited by a laser beam coupled through a multiwalled carbon nanotube array. The images of the fluorescent beads showed a distinctive dependence on the polarization direction of the laser beam owing to the surface plasmons induced from the metallic property of the array. The thickness of the array is 2 μm as compared to the metallic films of tens of nanometers in thickness that are conventionally used for surface plasmon excitation. This remarkable photon coupling capacity of a multiwalled carbon nanotube array is attributed to the confinement of electrons in its outermost tube shells and ballistic transport.

Original languageEnglish
Article number173102
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number17
Publication statusPublished - 24 Oct 2005
Externally publishedYes

Cite this