Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Switchable transmission

Electron microscope Transmission electron microscope Self-assembly of poly(amidoamine) nanoparticles [44] Optically switchable spiropyran-based polymer nanoparticles [45]... [Pg.338]

A further interesting use of the focal-conic to homeotropic texture transition is in infrared modulation [272]. Here it was found possible to modulate infrared light at A=8-12 pm with a maximum transmission of 87%, a contrast of 93%, and turn on and off times of 1 ms and 125 ms, respectively. A further window examined was 3-5 pm, and this work suggests that other chiral nematic electrooptic effects could be exploited in the near infrared. In communications technology a 2x2 optical switch for fiber-optics has been developed [273] using a chiral nematic film and two switchable nematic waveplates. It has been demonstrated that this is suitable for LED or laser sources. The device worked at 1.318 pm and had switching times of 40 ms with -26 dB crosstalk between unselected fibers. There will clearly be further advances in this use of the unique optical properites of chiral nematics. [Pg.1384]

See other pages where Switchable transmission is mentioned: [Pg.409]    [Pg.409]    [Pg.231]    [Pg.70]    [Pg.333]    [Pg.17]    [Pg.369]    [Pg.91]    [Pg.362]    [Pg.538]    [Pg.276]    [Pg.284]    [Pg.294]    [Pg.294]    [Pg.297]    [Pg.312]    [Pg.321]    [Pg.337]    [Pg.554]    [Pg.200]    [Pg.402]    [Pg.403]    [Pg.373]    [Pg.267]    [Pg.400]    [Pg.71]    [Pg.190]    [Pg.373]    [Pg.1662]    [Pg.1663]    [Pg.756]    [Pg.260]    [Pg.267]    [Pg.8]    [Pg.190]    [Pg.248]   
See also in sourсe #XX -- [ Pg.281 ]



SEARCH



Switchability

© 2024 chempedia.info