Optical trapping of individual magnetic nanoparticles

Akbar Samadi; Mengting Wang; Yanlian Yang; Lene B. Oddershede

doi:10.1117/12.2324124

7 September 2018 Optical trapping of individual magnetic nanoparticles

Akbar Samadi, Mengting Wang, Yanlian Yang, Lene B. Oddershede

Proceedings Volume 10723, Optical Trapping and Optical Micromanipulation XV; 107230E (2018) https://doi.org/10.1117/12.2324124
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

Due to their unique properties, magnetic nanoparticles, often made of iron oxides, have received significant attention in chemistry, solid state physics, and the life sciences. Although a magnetic field is the most obvious mean by which one can manipulate magnetic nanoparticles, we here demonstrate that magnetic nanoparticles can be individually controlled by optical manipulation. We quantify the interaction of optically trapped individual magnetic nanoparticles with the electrical field by determining the spring constant. Also, by finite element modeling we determine the extinction, scattering and absorption cross sections of magnetic nanoparticles as well as the real and imaginary parts of their complex polarizability. In comparison to magnetic manipulation, optical manipulation has the advantage, due to the tight focusing of the laser beam, that it allows for manipulation of a single particle at a time. Also, one can imagine applications where it is advantageous to employ both magnetic and optical manipulations simultaneously.

Conference Presentation

Citation Download Citation

Akbar Samadi, Mengting Wang, Yanlian Yang, and Lene B. Oddershede "Optical trapping of individual magnetic nanoparticles", Proc. SPIE 10723, Optical Trapping and Optical Micromanipulation XV, 107230E (7 September 2018); https://doi.org/10.1117/12.2324124

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