Abstract
We present a holographic tweezers workstation to optically trap and spectroscopically characterise metal nanoparticles. The versatility of the holographic tweezers allows us to create multiple traps manipulating several metal nanoparticles simultaneously. We developed an imaging system to view the nanoparticles in a transmission darkfield configuration without compromising the high numerical aperture of our trapping and viewing objective. In addition we implemented single particle spectroscopy to interrogate the trapped particles' properties with the ability to directly monitor the plasmonics coupling between particles while changing the distance between them. We also demonstrate a laser based method to generate fixed arrays of nanoparticles.
Original language | English |
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Title of host publication | Optical Trapping and Optical Micromanipulation VIII |
Volume | 8097 |
DOIs | |
Publication status | Published - 2011 |
Event | Optical Trapping and Optical Micromanipulation VIII - San Diego, CA, USA United States Duration: 21 Aug 2011 → 25 Aug 2011 |
Conference
Conference | Optical Trapping and Optical Micromanipulation VIII |
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Country/Territory | USA United States |
City | San Diego, CA |
Period | 21/08/11 → 25/08/11 |
Keywords
- Holographic tweezers
- Metal nanoparticles
- Nanoparticle spectroscopy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics