The influence of foreign ions on the crystal lattice of barium titanate

From investigations of phase diagrams of ternary oxides the lattice sites of foreign ions and compensating vacancies are established. Large trivalent ions occupy barium sites and are completely compensated by titanium vacancies. Small pentavalent ions occupy titanium sites and are mainly compensated by titanium vacancies. During these investigations a new compound was found, Ba La4 Ti4 O15 isomorphous with Ba5 Nb4 O15

Moleculaire materialen voor de elektronische industrie : van passief naar actief?

A review with 12 refs. on elec. conducting polymers, liq.-crystal polymers, ferromagnetic materials, and non-linear optical polymers. [on SciFinder (R)

Conducting polymers via a novel polymerization reaction

A review with 7 refs. on the 1,4-addn. reaction between arom. aldehydes and Mannich bases (the Stetter reaction) used to polymerize appropriately functionalized aroms., yielding poly-1,4-diketones which in turn can be transformed to thiophenes and pyrroles

Large induced optical activity in the conduction band of polyaniline doped with (1S)-(+)-10-camphorsulfonic acid

A large induced CD is found in the conduction band of polyaniline doped with optically active camphorsulfonic acid. In films obtained by spin-coating from a m-cresol soln., the chiral dopant induces chirality within the main chain of polyaniline. No other combinations of achiral conducting polymers and chiral dopants have been found that show induced optical activity in their conduction band

Nonlinear optical compound, nonlinear optical medium, method of manufacturing a nonlinear optical medium and device for doubling the frequency of a light wave

The invention relates to a nonlinear optical medium and a device comprising such a nonlinear optical medium which can be suitably used to double the frequency of red light, while forming blue light. The nonlinear optical medium comprises a polymer matrix and nonlinear optical compounds which contain a substituted sulphone group as the electron-acceptor group

Device for doubling the frequency of a light wave comprising a non-linear optical compound

The invention relates to a nonlinear optical medium and a device comprising such a nonlinear optical medium which can be suitably used to double the frequency of red light, while forming blue light. The nonlinear optical medium comprises a polymer matrix and nonlinear optical compounds which contain a substituted sulphone group as the electron-acceptor group

Nonlinear optical compound, nonlinear optical medium, method of manufacturing a nonlinear optical medium and device for doubling the frequency of a light wave

The invention relates to a nonlinear optical medium and a device comprising such a nonlinear optical medium which can be suitably used to double the frequency of red light, while forming blue light. The nonlinear optical medium comprises a polymer matrix and nonlinear optical compounds which contain a substituted sulphone group as the electron-acceptor group

Device for doubling the frequency of a light wave comprising a non-linear optical compound

The invention relates to a nonlinear optical medium and a device comprising such a nonlinear optical medium which can be suitably used to double the frequency of red light, while forming blue light. The nonlinear optical medium comprises a polymer matrix and nonlinear optical compounds which contain a substituted sulphone group as the electron-acceptor group