Density–Nematic Coupling in Isotropic Linear Polymers: Acoustic and Osmotic Birefringence
نویسندگان
چکیده
منابع مشابه
Combined effects of optical and acoustic birefringence on acousto-optic mode coupling in photonic crystal fiber.
We investigate in detail the origin of multiple resonance peaks experimentally observed in an all-fiber acousto-optic tunable filter built with a photonic crystal fiber having slightly deformed air-hole structure and non-circular outer cladding. A model for the acousto-optic mode coupling in the PCF is formulated taking into account both the acoustic and the optical birefringence. All experimen...
متن کاملBirefringence Properties and Surface Relief Grating Formation on Methylacrylate Polymers with Photochromic Side Chains
We have studied light-induced birefringence (LIB) and surface relief grating (SRG) formation in the series of methylacrylate polymers. The effect of material structure such as length of photochromic side chain, glass transition temperature and molecular structure of azo units on LIB and SRG are studied. The optical formation of self-induced SRG on films of these materials is also presented.
متن کاملStrain-Dependent Birefringence Of Elastic Polymers
The optical parameters (refractive index, absorption coefficient) of opaque dielectric materials can be measured with terahertz (THz) Time-Domain spectroscopy (TDS). By using a THz beam of known polarization and measuring both components of the transmitted THz field, it is possible to determine the birefringence present in an anisotropic material. In this work we used polarization sensitive (PS...
متن کاملMode coupling theory of the isotropic-nematic transition in sidechain liquid crystalline polymers
Using a mode coupling technique we investigate the dynamics near the isotropicnematic transition in liquid crystalline sidechain polymers. While in Inean field approximation one obtains z = I for the dynamical critical exponent z for the relaxation time of the order parameter, we get from mode coupling the value z = 1.5, a result which is in agreement with recent experiments done in Martinoty's...
متن کاملimproved laser induced birefringence in highly doped optical polymers
application of polymers in novel and advanced scientific technologies is increasingly expanding. in this regard, optical polymers among different materials have found a special and unique position. a novel dye doped polymer thin film was prepared by taking advantage of dye molecules' interaction with the host environment. this sample, like self-assembled structures, makes use of this inter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advanced Theory and Simulations
سال: 2019
ISSN: 2513-0390,2513-0390
DOI: 10.1002/adts.201900019