Solid Polymer Films Exhibiting Handedness-Switchable, Full-Color-Tunable Selective Reflection of Circularly Polarized Light

2014 ◽  
Vol 136 (28) ◽  
pp. 9858-9861 ◽  
Author(s):  
Yuuya Nagata ◽  
Keisuke Takagi ◽  
Michinori Suginome
Keyword(s):  
Polymer Films ◽  
Polarized Light ◽  
Solid Polymer ◽  
Selective Reflection ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Full Color ◽  
Color Tunable

Self-Assembled Luminescent Quantum Dots To Generate Full-Color and White Circularly Polarized Light

2017 ◽  
Vol 129 (40) ◽  
pp. 12342-12346 ◽  
Author(s):  
Shengwei Huo ◽  
Pengfei Duan ◽  
Tifeng Jiao ◽  
Qiuming Peng ◽  
Minghua Liu
Keyword(s):  
Quantum Dots ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Full Color ◽  
Self Assembled ◽  
Luminescent Quantum Dots

scholarly journals Circularly polarized reflection from the scarab beetle Chalcothea smaragdina : light scattering by a dual photonic structure

2017 ◽  
Vol 7 (4) ◽  
pp. 20160129 ◽  
Author(s):  
Luke T. McDonald ◽  
Ewan D. Finlayson ◽  
Bodo D. Wilts ◽  
Pete Vukusic
Keyword(s):  
Cholesteric Liquid Crystal ◽  
Polarized Light ◽  
Optical Scattering ◽  
Stratified Medium ◽  
Selective Reflection ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Electromagnetic Simulations ◽  
Left Handed ◽  
Colour Appearance

Helicoidal architectures comprising various polysaccharides, such as chitin and cellulose, have been reported in biological systems. In some cases, these architectures exhibit stunning optical properties analogous to ordered cholesteric liquid crystal phases. In this work, we characterize the circularly polarized reflectance and optical scattering from the cuticle of the beetle Chalcothea smaragdina (Coleoptera: Scarabaeidae: Cetoniinae) using optical experiments, simulations and structural analysis. The selective reflection of left-handed circularly polarized light is attributed to a Bouligand-type helicoidal morphology within the beetle's exocuticle. Using electron microscopy to inform electromagnetic simulations of this anisotropic stratified medium, the inextricable connection between the colour appearance of C. smaragdina and the periodicity of its helicoidal rotation is shown. A close agreement between the model and the measured reflectance spectra is obtained. In addition, the elytral surface of C. smaragdina possesses a blazed diffraction grating-like surface structure, which affects the diffuse appearance of the beetle's reflected colour, and therefore potentially enhances crypsis among the dense foliage of its rainforest habitat.

Self-Assembled Luminescent Quantum Dots To Generate Full-Color and White Circularly Polarized Light

2017 ◽  
Vol 56 (40) ◽  
pp. 12174-12178 ◽  
Author(s):  
Shengwei Huo ◽  
Pengfei Duan ◽  
Tifeng Jiao ◽  
Qiuming Peng ◽  
Minghua Liu
Keyword(s):  
Quantum Dots ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Full Color ◽  
Self Assembled ◽  
Luminescent Quantum Dots

Differential polarization imaging of sickled cells

1988 ◽  
Vol 46 ◽  
pp. 62-63
Author(s):  
Marcos F. Maestre
Keyword(s):  
Optical Properties ◽  
Theoretical Approach ◽  
Polarized Light ◽  
Polarization Microscopy ◽  
Spectroscopic Techniques ◽  
Polarization Imaging ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Microscopic Scale ◽  
Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

Blue Circularly Polarized Luminescent Amorphous Molecules with Single-handed Propeller Chirality Induced by Circularly Polarized Light Irradiation

2021 ◽  
Author(s):  
Zhaoming Zhang ◽  
Takunori Harada ◽  
Adriana Pietropaolo ◽  
Yuting Wang ◽  
Yue Wang ◽  
...  
Keyword(s):  
Polarized Light ◽  
Light Irradiation ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Trigonal Symmetry ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

Preferred-handed propeller conformation was induced by circularly polarized light irradiation to three amorphous molecules with trigonal symmetry, and the molecules with induced chirality efficiently exhibited blue circularly polarized luminescence. In...

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