Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Optical absorption analysis and optimization of gold nanoshells

Not Accessible

Your library or personal account may give you access

Abstract

Gold nanoshells, consisting of a nanoscale dielectric core coated with an ultrathin gold shell, have wide biomedical applications due to their strong optical absorption properties. Gold nanoshells with high absorption efficiencies can help to improve these applications. We investigate the effects of the core material, surrounding medium, core radius, and shell thickness on the absorption spectra of gold nanoshells by using the light-scattering theory of a coated sphere. Our results show that the position and intensity of the absorption peak can be tuned over a wide range by manipulating the above-mentioned parameters. We also obtain the optimal absorption efficiencies and structures of hollow gold nanoshells and gold-coated SiO2 nanoshells embedded in water at wavelengths of 800, 820, and 1064 nm. The results show that hollow gold nanoshells possess the maximum absorption efficiency (5.42) at a wavelength of 800 nm; the corresponding shell thickness and core radius are 4.8 and 38.9 nm, respectively. They can be used as the ideal photothermal conversation particles for biomedical applications.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Linear optical properties of gold nanoshells

Richard D. Averitt, Sarah L. Westcott, and Naomi J. Halas
J. Opt. Soc. Am. B 16(10) 1824-1832 (1999)

Effect of number density on optimal design of gold nanoshells for plasmonic photothermal therapy

Debabrata Sikdar, Ivan D. Rukhlenko, Wenlong Cheng, and Malin Premaratne
Biomed. Opt. Express 4(1) 15-31 (2013)

Influence of high-refractive-index oxide cores on optical properties of metal nanoshells

K. Laaksonen, S. Suomela, S. R. Puisto, N. K. J. Rostedt, T. Ala-Nissila, and R. M. Nieminen
J. Opt. Soc. Am. B 31(3) 494-502 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved