Short Course Listings
Short Course

Course Information
Course Title: (CANCELLED) Optical Rheology: Get G’ and G” at Higher Frequency
Categories: 1 - Analytical Metrology
2 - Biomedical Engineering
3 - Pharmaceutical Sciences
4 - Polymers
5 - Rheology
6 - Life Sciences
Instructor(s): Ulf Nobbmann Course Number: 127
Affiliation: Malvern
Course Date: 03/08/2017 - Wednesday Course Length: 1/2 Day Course
Start Time: 01:00 PM End Time: 05:00 PM
Fee: $325 ($425 after 2/18/17) Textbook Fee:

Course Description
This 1/2 day course covers the principles of optical rheology. Dynamic Light Scattering (DLS) is widely used to obtain particle size. It can also detect the thermally induced mean square displacement (MSD) of tracer particles. This MSD is converted into shear storage and loss modulus G’ and G” using the generalized Stokes-Einstein equation. DLS micro-rheology can thus probe short time dynamics of weakly structured solutions, complementary to traditional rotational rheology. This may for example be used to study the evolution of weak viscoelasticity at the onset of gelation. The different practical steps (tracer bead selection, size by DLS, zeta potential to check absence of interaction) are covered with examples. Details of micro-rheology include basics (principle of operation, math, caveats) and example applications in laboratory research.

Target Audience
Those with some general practical dynamic light scattering experience who want to maximize the value obtained from their existing equipment by learning this new application, and those who are considering the potential benefit of using micro-rheological measurements as an extension to traditional rheology: - Scientists, R&D personnel - Laboratory Technicians

Course Outline
(15min) Introduction & Course Objectives: What is optical rheology?
(30min) Fundamentals of Dynamic Light Scattering (DLS)
(15min) Fundamentals of Zeta Potential (Electrophoretic Light Scattering, ELS)
(15min) Coffee/Tea Break
(60min) Fundamentals of micro-rheology: tracer, MSD, G’, G’’
(60min) Case Studies: Example Applications in Polymers, Biopolymers & Proteins
(45min) Practical Take Home Tips, Question and Answer Session

Course Instructor's Biography
Ulf Nobbmann, PhD in Physics, Oklahoma State. Dr. Nobbmann is Zetasizer Product Manager – Americas for Malvern Instruments. He has extensive experience in light scattering as a tool for chemical, biochemical and biophysical laboratories.