Laser diffraction Masterclass 4: Optical properties

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00:00:00 Laser Diffraction Masterclass 4:Optical property selection
00:01:23 Laser Diffraction Masterclass 4:Optical property selection
00:01:47 Laser diffraction measurement process
00:02:43 Laser diffraction Masterclass
00:03:42 Overview
00:04:41 What do laser diffraction systems measure?
00:06:15 How do we get to the size distribution?
00:08:48 Scattering models: Mie Theory
00:09:41 Scattering models: Mie Theory
00:11:03 Scattering models: Fraunhofer approximation
00:12:19 Comparing the scattering models
00:13:37 How to choose optical properties
00:14:08 What optical properties are required
00:15:28 Determining the refractive index
00:16:51 Refractometer methods: Solution example
00:18:07 Refractometer methods: Solution example
00:19:11 Microscopy methods: Becke lines
00:20:05 Microscopy methods: Becke lines
00:21:09 Index matching: Quartz particles (RI = 1.544)
00:22:22 Empirical methods
00:23:35 Empirical methods: calculations from structure
00:24:34 The Imaginary refractive index
00:25:25 Absorption: Microscope observations
00:26:50 Absorption: Volume concentration method
00:28:05 Verifying optical properties
00:28:36 Using the fit report
00:29:47 Assessing the data fit: Refractive index
00:30:40 Assessing the data fit: Absorption
00:31:58 Example of assessing the data fit
00:32:03 Assessing the fit using 1.4/0.01
00:32:08 Using trend graphs to a range of refractive indices
00:32:13 Reports for assessing optical properties
00:32:53 Assessing the fit using 1.54/0.01
00:33:49 Looking at the results
00:34:37 Method transferMS2000 emulation model
00:35:07 When is an emulation model required?
00:35:59 Samples at the edge of the dynamic range
00:37:35 Non-spherical particles
00:38:26 Conclusions
00:48:37 Contact Information
In this webinar, we will describe the experimental and empirical techniques available for optical property determination, with practical examples being present regarding how these can be used to generate realistic results.