Haifeng Yu's Dancing with Light : Advances in Photofunctional PDF

By Haifeng Yu

ISBN-10: 9814411124

ISBN-13: 9789814411127

Fresh development during this box shows that integrating photochromic molecules into LC fabrics allows one to photo-manipulate specified good points corresponding to photoinduced section transition, photocontrolled alignment and phototriggered molecular cooperative movement, resulting in their novel purposes past monitors. This ebook introduces readers to this box, from the first- to the complicated point in photoresponsive LC Read more...

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By Haifeng Yu

ISBN-10: 9814411124

ISBN-13: 9789814411127

Fresh development during this box shows that integrating photochromic molecules into LC fabrics allows one to photo-manipulate specified good points corresponding to photoinduced section transition, photocontrolled alignment and phototriggered molecular cooperative movement, resulting in their novel purposes past monitors. This ebook introduces readers to this box, from the first- to the complicated point in photoresponsive LC Read more...

Show description

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Additional resources for Dancing with Light : Advances in Photofunctional Liquid-Crystalline Materials

Sample text

7). For an isotropic fluid, S = 0, whereas for a perfectly aligned crystal, S = 1. 8, and this value generally decreases due to higher mobility and disorder as the temperature is raised. The S sharply decreases at the clearing point or phase transition temperature, as shown in the right of Fig. 7. 2 Mechanical Properties (Elastic Constant) When LC materials are deformed under an external field, they tend to restore their original states. To describe their mechanical properties, three elastic constants, splay (K11), twist (K22), and bend (K33) are defined according to the elastic theory (Fig.

It was revealed that the alignment of LC molecules at the irradiated area of dye-doped surface changed from rubbing direction to perpendicular to the polarization of the actinic light, whereas those at the undoped polyimide surface remained unchanged, resulting in a TN structure within the irradiated region.

On the other hand, if they are not miscible, no conclusion can be drawn. For instance, if you can get miscible with mixing one nematic LC sample with uncertain materials, the materials should show a nematic phase. If phase separation occurs, the materials should not exhibit a nematic phase. 24 Measurement of LC phases by a miscible way with one known LC sample (N, nematic phase; S, smectic phase). 6 Other Methods The usual way of characterizing LC phases is to identify the phase by POM, to establish the thermodynamic reversibility using DSC, 27 28 Introduction and to elucidate the molecular arrangements using XRD.

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Dancing with Light : Advances in Photofunctional Liquid-Crystalline Materials by Haifeng Yu


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