Low-coherence heterodyne photon correlation spectroscopy
| Autor: | Aaron Schmidt, P. Saulnier, Shannon L. Siefken, Robert Corey, Joshua H. Johnson |
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| Rok vydání: | 2008 |
| Předmět: |
Physics
Scattering business.industry Materials Science (miscellaneous) complex mixtures Industrial and Manufacturing Engineering Light scattering Condensed Matter::Soft Condensed Matter Interferometry Colloid Optics Dynamic light scattering Heterodyne detection Business and International Management business Brownian motion Coherence (physics) |
| Zdroj: | Applied optics. 37(10) |
| ISSN: | 1559-128X |
| Popis: | Photon correlation spectroscopy (PCS) is routinely used to investigate the dynamics of colloidal particles undergoing Brownian motion. This technique is applicable to low-density colloidal suspensions in which the effects of multiple light scattering are minimal. We introduce a new low-coherence heterodyne PCS technique that allows direct investigation of colloidal suspensions of higher concentration than previously accessible with standard PCS. In this technique, low-coherence optical heterodyne interferometry is used to suppress multiple light scattering, allowing preferential detection of single-scattering events. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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