Tailoring the shape of colloidal gold particles with nanosecond-pulsed laser light

Florian Vogel; Frank Hubenthal; Frank Träger

doi:10.1117/12.680339

11 September 2006 Tailoring the shape of colloidal gold particles with nanosecond-pulsed laser light

Florian Vogel, Frank Hubenthal, Frank Träger

Proceedings Volume 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II; 63240G (2006) https://doi.org/10.1117/12.680339
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Modification of metal nanoparticles with laser light has been a well-known technique for several years. In this paper, we present our recent studies on tailoring the shape of colloidal gold particles with nanosecond-pulsed laser light. The underlying method is based on the shape and size dependent optical properties of metal nanoparticles, i.e. the excitation of surface plasmon polariton resonances. Thus, laser irradiation with a pre-determined photon energy excites and heats nanoparticles of certain shapes and sizes selectively. This heating leads to diffusion and, for sufficiently high fluences, to evaporation of surface atoms. In our experiments, colloidal gold particles were prepared by chemical reduction of a gold salt resulting in nanoparticles with different sizes and shapes. Subsequently, the colloidal gold particles were irradiated with nanosecond-pulsed laser light. In all cases, a significant reduction of the line width of the surface plasmon polariton resonance has been observed. This reflects a narrowing of the shape distribution of the particles. For example, irradiation with a photon energy of 2.16 eV and a fluence of (58 ± 2) mJ/cm² leads to a reduction of the width of the surface plasmon resonance from 0.30 eV to 0.22 eV (HWHM) due to a reshaping of the nanoparticles. This has also been confirmed by TEM measurements. Also, a size reduction of the nanoparticles has been observed.

Citation Download Citation

Florian Vogel, Frank Hubenthal, and Frank Träger "Tailoring the shape of colloidal gold particles with nanosecond-pulsed laser light", Proc. SPIE 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II, 63240G (11 September 2006); https://doi.org/10.1117/12.680339

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Nanoparticles

Particles

Gold

Transmission electron microscopy

Spherical lenses

Metals

Absorption

Show All Keywords

Keywords/Phrases

Search In:

Publication Years