Video Experimental Relacionado
Updated: Jul 30, 2026
09:38
Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
Published on: January 3, 2018
Compensación de la birrefringencia de un polímero por un cristal birrefringente
Akihiro Tagaya1, Hisanori Ohkita, Masaki Mukoh
1Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-0061, Japan. BZZ13624@nifty.ne.jp
Science (New York, N.Y.)
|August 9, 2003
Resumen
Este estudio introduce un nuevo método para contrarrestar la birefringencia del polímero óptico mediante la incorporación de cristales inorgánicos. Esta técnica mejora el rendimiento de los dispositivos ópticos y la eficiencia de fabricación, independientemente de las condiciones de procesamiento.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- La óptica es la óptica.
- La ciencia de los polímeros es la ciencia de los polímeros.
Sus antecedentes:
- La birefringencia en los polímeros ópticos degrada el rendimiento del dispositivo.
- Los métodos actuales para minimizar la birefringencia dependen de las condiciones específicas del proceso.
Objetivo del estudio:
- Desarrollar un método para compensar la birefringencia de polímeros ópticos.
- Para mejorar el rendimiento y la productividad de los dispositivos ópticos de polímero.
Principales métodos:
- Dopaje de polímeros ópticos con cristales birefringentes inorgánicos.
- Selección de cristales con birefringencia opuesta al polímero.
- Cristales orientadores en forma de varilla con cadenas de polímero.
Principales resultados:
- Se ha compensado con éxito la birefringencia del polímero utilizando cristales inorgánicos.
- Se logra la minimización de las birefringencias independientemente de las condiciones del proceso.
- Potencial demostrado para mejorar la productividad de los dispositivos.
Conclusiones:
- El método desarrollado compensa efectivamente la birefringencia del polímero óptico.
- Este enfoque ofrece una solución independiente del proceso para mejorar el rendimiento de los dispositivos ópticos.
Videos de Conceptos Relacionados
02:18X-ray Crystallography
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
01:10Recrystallization: Solid–Solution Equilibria
Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
01:24Characteristics and Nomenclature of Copolymers
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
01:21Polymer Classification: Crystallinity
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
01:26Polymer Classification: Stereospecificity
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
01:29Determination of Crystal Structures
In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...