Metallic Nanoparticle Manipulation using Optoelectronic Tweezers

Author

Jamshidi, Arash ; Hsu, Hsan-Yin ; Valley, Justin K. ; Ohta, Aaron T. ; Neale, Steven ; Wu, Ming C.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of California, Berkeley, CA

fYear

2009

fDate

25-29 Jan. 2009

Firstpage

579

Lastpage

582

Abstract

We report on trapping of single and multiple spherical gold nanoparticles with 60 to 250 nm diameters using optoelectronic tweezers (OET). Thanks to the low optical intensities required for stable trapping (20 muW over 1.7 mum spot), we estimate the temperature increase in OET-trapped nanoparticles due to absorption to be DeltaT < 0.1degC, making OET-trapped nanoparticles suitable for biological imaging and sensing applications. In addition, we observe translational velocities of 68 mum/s and demonstrate trapping of both single and multiple nanoparticles in a single trap.

Keywords

nanoparticles; optoelectronic devices; radiation pressure; OET-trapped nanoparticles; biological imaging; metallic nanoparticle manipulation; optoelectronic tweezers; spherical gold nanoparticles; translational velocities; Biomedical optical imaging; Charge carrier processes; Electrodes; Indium tin oxide; Nanoparticles; Nonuniform electric fields; Optical sensors; Photoconducting materials; Photoconductivity; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems, 2009. MEMS 2009. IEEE 22nd International Conference on

Conference_Location

Sorrento

ISSN

1084-6999

Print_ISBN

978-1-4244-2977-6

Electronic_ISBN

1084-6999

Type

conf

DOI

10.1109/MEMSYS.2009.4805448

Filename

4805448