Localization of laser energy conversion by metal nanoparticles: basic effects and applications

Andrea Csáki; Frank Garwe; Andrea Steinbrück; Anja Weise; Karsten König; Wolfgang Fritzsche

doi:10.1117/12.662730

14 April 2006 Localization of laser energy conversion by metal nanoparticles: basic effects and applications

Andrea Csáki, Frank Garwe, Andrea Steinbrück, Anja Weise, Karsten König, Wolfgang Fritzsche

Proceedings Volume 6191, Biophotonics and New Therapy Frontiers; 61911K (2006) https://doi.org/10.1117/12.662730
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

Manipulation of material by optical means represents an emerging field with numerous applications. Especially in biology and medicine, the flexible and powerful potential of laser utilization holds great promises. For many applications, the resolution of the induced effects is essential. Besides focusing of the beam by various means, the use of sub-wavelengths nanoantenna could overcome this problem. The optical absorption of certain nanostructures is based on plasmon effects. We present studies of the use of metal (homogeneous gold or gold/silver core/shell systems) nanoparticles as antennas that convert the incident laser light into irreversible destructive effects. Based on the established field of DNA-conjugated nanoparticles, we investigated the sequence-specific attachment of DNA-nanoparticle complexes onto DNA with complementary sequences, in the state of double-stranded either isolated or metaphase chromosomal DNA. Important points were the adjustment of the absorption properties of the nanoparticles by control of their material composition (e.g., by addition of a silver layer to a gold core) and diameter. Another group of experiments studied chromosome-conjugated particles before and after laser treatment, in order to reveal the lateral extension of damages as well as the underlying mechanism.

Citation Download Citation

Andrea Csáki, Frank Garwe, Andrea Steinbrück, Anja Weise, Karsten König, and Wolfgang Fritzsche "Localization of laser energy conversion by metal nanoparticles: basic effects and applications", Proc. SPIE 6191, Biophotonics and New Therapy Frontiers, 61911K (14 April 2006); https://doi.org/10.1117/12.662730

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
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Nanoparticles

Particles

Atomic force microscopy

Metals

Gold

Laser therapeutics

Luminescence

Show All Keywords

Keywords/Phrases

Search In:

Publication Years