Triangular core-shell structure Ag@AgAu

Author

Shahjamali, Mohammad M ; Pin, Lim Ming ; Kathawala, Mustafa Hussain ; Pratheepan, Satkunarajah ; Saini, Norsuzana Bte ; Mansor, Maimanah Bte ; Xue, Can

Author_Institution

Sch. of Mater. Sci. & Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2010

fDate

14-16 Dec. 2010

Firstpage

1

Lastpage

3

Abstract

Novel Triangular Ag@AgAu nanoparticles were synthesized in aqueous solution using a seed-mediated approach in the absence of any surfactants. The formation of the gold layer on the silver nanoprism seeds leads to structures with better stability and tunability. The triangular Ag@AgAu has been synthesized by the reduction of hydrogen tetrachloraurate onto Ag nanoprisms. This unusual structure exhibited interesting optical properties and the extinction spectra can be engineered in a broad range based upon the thickness of the outer AuAg shell.

Keywords

extinction coefficients; gold alloys; infrared spectra; nanofabrication; nanoparticles; reduction (chemical); silver; silver alloys; ultraviolet spectra; visible spectra; Ag-AgAu; aqueous solution; extinction spectra; gold layer; hydrogen tetrachloraurate; optical properties; reduction; seed-mediated approach; silver nanoprism seed; triangular core-shell structure; triangular nanoparticles; Chemicals; Gold; Nanoparticles; Optical imaging; Optical pumping; Silver; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Global Conference (PGC), 2010

Conference_Location

Singapore

Print_ISBN

978-1-4244-9882-6

Type

conf

DOI

10.1109/PGC.2010.5706139

Filename

5706139