Abstract

Methods and systems for using dynamic light scattering, for investigating local rheological responses of complex fluids over a frequency range larger than that provided by standard instrumentation. A low-coherence radiation source is used with fiber optics to allow measurements of small volume spacing of up to approximately 1/10 of a picoliter. The methods and systems are based on dynamic light scattering, for investigating the local rheological response of a complex fluid over a frequency range larger than that provided by standard mechanical instrumentation. The low-coherence radiation used in a fiber optics configuration allows the measurements to be confined to a small volume around a tenth of a picoliter. The ability of the method to accurately measure both loss and storage moduli has been tested using both simple Newtonian liquids and viscoelastic, complex fluids. Monitoring liquid-gel transitions in polymer solutions has also been demonstrated. The unique capability of the techn

Document Type

Patent

Patent Number

US 6,958,816 B1

Application Serial Number

10/242,221

Issue Date

10-25-2005

Current Assignee

Joint Assignment w/UCFRF: University of Florida Research Foundation, Inc.

Assignee at Issuance

Joint Assignment w/UCFRF: University of Florida Research Foundation, Inc.

College

College of Optics and Photonics

Department

CREOL

Allowance Date

5-27-2005

Filing Date

9-12-2002

Assignee at Filing

Joint Assignment w/UCFRF: University of Florida Research Foundation, Inc.

Filing Type

Nonprovisional Application Record

Donated

no

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