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81.
82.
An optoelectronic integrated device based on the concept of vertical and direct integration is described. Four types of integrated devices composed of multiple heterojunction phototransistors and laser diodes are developed and the devices successfully achieve thirteen functions: optical switching, amplification, thresholding, bistability, light-controlled optical bistability, light-controlled optical thresholding, tristability, set and reset functions in tristable states, set and reset functions in tetrastable states, and bistable and tristable flip-flop functions. 相似文献
83.
Akira Noda 《Physics letters. A》1982,88(2):60-61
Proper time in relativistic mechanics is redefined on the basis of the eikonal method. By modifying the form of the energy-momentum relation, it is shown that the generalized proper time can be defined in newtonian mechanics. 相似文献
84.
Mathematische Zeitschrift - 相似文献
85.
A method of measuring flow-birefringence is reported. In this method, a circularly polarized light wave is transmitted through the flow-birefringent medium. The transmitted elliptically polarized wave is compensated by a Babinet-Soleil plate to convert it back into a circularly polarized wave. The state of circular polarization is confirmed using the rotating-analyser method. Measurements can be carried out with a sample having a fixed azimuth. The minimum detectable optical retardation angle was 5 × 10-3 degree. This corresponds to a birefringence of Δn = 1 × 10-10, when the optical path length of the sample cell is 100 mm. 相似文献
86.
Tamotsu Fujisawa Toshio Sato Tatsuo Kawara Atsunari Noda Toshiyuki Obinata 《Tetrahedron letters》1980,21(26):2553-2554
A new route for the terpene synthesis is investigated, which undergoes via terpene carboxylic acids as key intermediates obtained by the regiospecific ring opening of β-methyl-β-propiolactone with a cuprate or with a Grignard reagent in the presence of a copper catalyst. 相似文献
87.
88.
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90.
Masaru Matsuo Fumihiko Ozaki Yasuyuki Konno Tetsuya Ogita 《Journal of Polymer Science.Polymer Physics》1981,19(10):1531-1547
The deformation of liquid-crystalline spherulites of poly(γ-benzyl-L -glutamate) (PBLG) in an electric field was investigated by light scattering, polarized-light microscopy, and birefringence measurements. Under the polarizing microscope, the deformation was found to be dependent upon the field strength. The spherulites deformed perpendicular to the field. Above 75 V/cm in N,N-dimethylformamide or 120 V/cm in 1,1,2-trichloroethane, the deformed spherulites were transformed to rodlike textures. With increasing voltage, the rods gradually oriented parallel to the electric field. On the basis of the experimental results, models for affine deformation are proposed. With these models, light-scattering patterns are calculated. The calculated and experimental patterns agree semiquantitatively. 相似文献