Characterizing Nanoparticle Size by Dynamic Light Scattering Technique (DLS)

<p>The Dynamic Light Scattering Technique was used to determine the size, shape and diffusion coefficient of nanoparticle. The intensity auto correlation functions of light scattered by particles in a solution were measured by using a photomultiplier tube and analyzed to get the relaxation rates for decay of intensity correlations, which correspond to the diffusion constants pertaining to the motion of the particle. In the case of nanorods there are two types of motion - translational and rotational. By dis-entangling the relaxation rates, corresponding to these two types of motion, the shape and size of nanoparticle could be characterized. These experiments, though limited in scope, demonstrate the promise of dynamical light scattering as an inexpensive and convenient technique for characterizing regular shaped nano-particles in a fluid medium. </p>

Name thesis:degree_name

Master of Science in Microelectronics-Photonics (MS)

Level thesis:degree_level

Thesis

Year dc:date.available

2014

Author dc:creator

• Zaman, Marzia

Advisor dc:contributor.advisor

• Singh, Surendra P.

Contributors dc:contributor

• Manasreh, Omar O.
• Chen, Jingyi

• Dynamic Light Scattering
• Nanorod Sizing
• Nanosphere Sizing
• Nanoscience and Nanotechnology
• Optics

Repository record dc:identifier

https://scholarworks.uark.edu/etd/2199

OAI identifier oai:identifier

oai:scholarworks.uark.edu:etd-3738