Date:

2025-04-30

Title of Paper:

Tunable band width of negative dielectric constant of gold nanoshells thin film

Journal:

Materials Chemistry and Physics

Summary:

Negative dielectric constant in gold nanoshells thin film has been investigated by means of
Maxwell–Garnett (MG) effective medium model and quasi-static theory. Numerical calculation results
show that the real part of average dielectric constant may change fromnegative, through zero to positive
values near the resonancewavelength. The negative band width can be tuned by changing the local environment dielectric or gold shell thickness. The surrounding dielectric constant and thin shell thickness
have greater capability to alter the negative wavelength range.
© 2009 Elsevier B.V. All rights reserved.

Co-author:

jian zhu

Translation or Not:

No

Date of Publication:

2009-07-01