Share Email Print
cover

Proceedings Paper

Near-field analysis of CdSe quantum dot conjugated core-shell nanoparticle
Author(s): Taehwang Son; Saji Thomas Kochuveedu; Dong Ha Kim; Donghyun Kim
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We have investigated near field distribution and absorption cross-section of CdSe quantum dot (QD) conjugated gold nanoparticles using three-dimensional finite-difference time-domain method. A gold nanoparticle core was modeled with a different SiO2 shell thickness and surface density of QDs. Absorption cross-section was found to be proportionate to the shell thickness and the QD surface density. In regard to the absorption by a single QD, either nanoparticle-QD coupling or QD-QD coupling was dominant depending on the surface density. Moreover, shell thickness weakens the coupling and the absorption of a single QD. Finally, enhanced absorption by a QD-conjugated nanoparticle dimer structure is also reported as a result of field enhancement between NPs assisted by QDs.

Paper Details

Date Published: 20 February 2014
PDF: 7 pages
Proc. SPIE 8954, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XI, 89540V (20 February 2014); doi: 10.1117/12.2038885
Show Author Affiliations
Taehwang Son, Yonsei Univ. (Korea, Republic of)
Saji Thomas Kochuveedu, Ewha Womans Univ. (Korea, Republic of)
Dong Ha Kim, Ewha Womans Univ. (Korea, Republic of)
Donghyun Kim, Yonsei Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 8954:
Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XI
Alexander N. Cartwright; Dan V. Nicolau, Editor(s)

© SPIE. Terms of Use
Back to Top