What is the birefringence of polymers? What principle does it arise from? How can it be controlled? This will be explained clearly with specific examples for each question!
Lecturer Professor Toyo Okoshi, Ph.D. Shinshu University, Faculty of Textile Science and Technology Target Audience: Engineers, researchers, and beginners interested in birefringence Venue: Kawasaki City Industrial Promotion Hall, Room 2 [City of Kawasaki] 7 minutes on foot from Kawasaki Station on JR or Keikyu Line Date and Time: June 24, 2011 (Friday) 13:00-16:30 Capacity: 30 participants. *Registration will close once full. Please apply early. Participation Fee: 49,350 yen (including tax and textbook costs) for up to 2 participants from one company ⇒ ◆ Invoices for 2 participants can be split into 2 parts (please indicate "split invoice" in the remarks section) *New members registering for the first time by June 10 will receive an early bird discount price of 44,100 yen. ◆ If 3 participants from the same organization apply, the fee is 67,200 yen.
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basic information
In polymer products such as molded items, films, and fibers, "birefringence" occurs due to the stresses applied during molding or use, as well as the internal structure, which significantly affects the optical properties of the products. This course will clearly explain, with specific examples, the following questions: What is birefringence in polymers? What principles lead to its occurrence? How can it be controlled? How can it be measured?
Price range
P2
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P2
Applications/Examples of results
1. Birefringence of Polymers 2. Molecular Orientation and Birefringence 2.1 Three Elements of Molecular Orientation 2.1.1 Orientation Form - How are they arranged? 2.1.2 Degree of Orientation - To what extent are they arranged? 2.1.3 Orientation Elements - What is arranged? 2.2 Intrinsic (Limit) Birefringence - The relationship between molecular structure and birefringence 2.2.1 Lorentz-Lorenz Equation - The molecular significance of refractive index 2.2.2 Orientation Form and Intrinsic Birefringence - Intrinsic birefringence is determined by the material and orientation form 3. Control of Birefringence by Polymer Stretching 1. Stretch Ratio and Orientation Birefringence - Control of birefringence by stretching conditions 2. Orientation Crystallization - Structural formation through molecular orientation 4. Measurement of Birefringence 4.1 Methods for Measuring Retardation 4.1.1 Photoelasticity 4.1.2 Polarizing Microscope 4.1.3 Measurement of Birefringence Dispersion 4.1.4 Measurement of Refractive Index Ellipsoid 4.1.5 Senarmont Method 4.2 Direct Measurement of Refractive Index 4.2.1 Abbe Refractometer 4.2.2 Beck Method 4.2.3 Interferometric Microscope
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