Single layer, tunable, liquid crystal based Pancharatnam phase devices

2021 ◽  
Author(s):  
Brandon Vreeland ◽  
Comrun Yousefzadeh ◽  
Andre van Rynbach ◽  
Douglas Bryant ◽  
Philip J. Bos
Keyword(s):  
Liquid Crystal ◽  
Single Layer ◽  
Pancharatnam Phase

Dynamics of a liquid-crystal variable optical prism based on Pancharatnam phase

2010 ◽  
Vol 49 (6) ◽  
pp. 976 ◽  
Author(s):  
Lei Shi ◽  
Paul F. McManamon ◽  
Douglas Bryant ◽  
Ke Zhang ◽  
Philip J. Bos
Keyword(s):  
Liquid Crystal ◽  
Pancharatnam Phase ◽  
Optical Prism

Electroluminescent Diodes Using Cyclohexane-Based Glass Forming Liquid Crystals and Their Analogues

1996 ◽  
Vol 425 ◽  
Author(s):  
C. P. Lin ◽  
T. Tsutsui ◽  
S. Saito ◽  
S. H. Chen ◽  
J. C. Mastrangelo ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electron Transport ◽  
Charge Transport ◽  
Single Layer ◽  
Hole Transport ◽  
Device Performance ◽  
Glass Forming ◽  
Two Component ◽  
Organic Electroluminescent ◽  
Transport Molecules

AbstractOrganic electroluminescent(EL) diodes using spin-coat films of cyclohexane-based glass-forming liquid crystal (LC) materials were fabricated. The cyclohexane-based LC materials were found to be useful for EL diodes. Blending the LC materials with charge transport molecules was found to be a promising method for improving device performance. Conventional hole transport and electron transport molecules were found to show a tendency to form exciplexes with cyclohexanebased LC materials. This difficulty was overcome by the introduction of cyclohexane-based charge transport molecules. The EL quantum efficiency of 0.06% was attained in the single-layer devices with two-component blends.

scholarly journals High-efficiency, tunable, fringe-field switching-mode beam steering based on a liquid crystal Pancharatnam phase

2020 ◽  
Vol 59 (34) ◽  
pp. 10706
Author(s):  
Comrun Yousefzadeh ◽  
Andre Van Rynbach ◽  
Doug Bryant ◽  
Philip Bos
Keyword(s):  
Liquid Crystal ◽  
High Efficiency ◽  
Beam Steering ◽  
Fringe Field ◽  
Pancharatnam Phase ◽  
Mode Beam ◽  
Switching Mode

scholarly journals Multi-Pitch Liquid Crystal Filters with Single Layer Polymer Template

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2521
Author(s):  
Zhikang Zhu ◽  
Yao Gao ◽  
Jiangang Lu
Keyword(s):  
Liquid Crystal ◽  
Optical Communication ◽  
Single Layer ◽  
Lc Filters ◽  
Target Template ◽  
Potential Applications ◽  
Blue Phase ◽  
Polymer Template ◽  
Lc Filter

Multi-reflective peak and bandwidth scalable liquid crystal (LC) filters were investigated. By refilling a cholesteric LC (CLC) whose chiral pitch is different to the target template into a blue phase LC (BPLC) template, a multi-reflective peak single layer LC filter can be fabricated. With multiple templating and refilling processes, the number of reflective peaks can be further increased. Moreover, by refilling the CLCs of designed chiral pitch into a CLC template sequentially, a bandwidth scalable single layer CLC filter can be fabricated. The LC filters show great potential applications in optical communication, display, and LC lasing.

scholarly journals Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic Heating

2021 ◽  
Vol 11 (14) ◽  
pp. 6272
Author(s):  
Giovanna Palermo ◽  
Rossella Grillo ◽  
Luigia Pezzi ◽  
Thomas Bürgi ◽  
Nelson Tabiryan ◽  
...  
Keyword(s):  
Thin Film ◽  
Gold Nanoparticles ◽  
Refractive Index ◽  
Liquid Crystal ◽  
Single Layer ◽  
Organic Layer ◽  
Molecular Reorientation ◽  
Index Value ◽  
Director Reorientation ◽  
Director Orientation

We experimentally demonstrate that the plasmonic heat delivered by a single layer of homogeneously distributed gold nanoparticles (AuNPs), immobilized on a glass substrate, can be optically tuned by taking advantage of the properties of an organic layer based on azobenzene and nematic liquid crystal (NLC) molecules. The effect, which exploits the dependence of the NLC refractive index value on the molecular director orientation, is realized using the polarization-dependent, light-induced molecular reorientation of a thin film of photo-aligning material that the NLC is in contact with. The reversibility of the optically induced molecular director reorientation of the NLC enables an active modulation of the plasmonic photo-induced heat.

scholarly journals PROJECTION OF HOLOGRAMS FROM PHOTOREFRACTIVE OASLMs

2007 ◽  
Vol 16 (03) ◽  
pp. 307-316 ◽  
Author(s):  
OKSANA TRUSHKEVYCH ◽  
NEIL COLLINGS ◽  
WILLIAM A. CROSSLAND ◽  
TIMOTHY D. WILKINSON ◽  
ANDREAS GEORGIOU ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Crystal ◽  
Oblique Incidence ◽  
Single Layer ◽  
Normal Incidence ◽  
Spatial Light Modulators ◽  
Modes Of Operation ◽  
Nonlinear Materials ◽  
Light Modulators ◽  
Transmission And Reflection

Liquid crystals doped with fullerenes and carbon nanotubes (CNTs) act as good optical nonlinear materials. We have used these materials to build optically-addressed spatial light modulators (OASLMs). The devices comprise a single layer of doped liquid crystal acting as an active layer. Undoped LC devices with surfaces coated with fullerenes are also studied. Such OASLMs allow recording of phase holograms, and we record by imaging pre-calculated pre-recorded holograms. Writing is performed at normal incidence and reading at 45° oblique incidence. Both transmission and reflection modes of operation are used. Experimental results as well as comparison with commercially available OASLMs are presented.

Single layer liquid crystal optically addressed spatial light modulators

2006 ◽  
Author(s):  
N. Collings ◽  
O. Trushkevych ◽  
W. A. Crossland ◽  
T. D. Wilkinson
Keyword(s):  
Liquid Crystal ◽  
Single Layer ◽  
Spatial Light Modulators ◽  
Light Modulators

scholarly journals Bioinorganic Membrane Using Kurumi, A New Liquid Crystal

2021 ◽  
pp. 4-7
Author(s):  
Ricardo Gobato ◽  
Alireza Heidari ◽  
Abhijit Mitra
Keyword(s):  
Molecular Dynamics ◽  
Quantum Mechanics ◽  
Liquid Crystal ◽  
Force Field ◽  
Experimental Verification ◽  
Computational Simulation ◽  
Single Layer ◽  
Applied Theory ◽  
Micellar Structure ◽  
Scientific Name

The work characterizes develop a single layer bioinorganic membrane using nano-molecule Kurumi C13H20BeLi2SeSi / C13H19BeLi2SeSi, is well characterize computationally. As its scientific name 3-lithio-3-(6-{3-selena-8-beryllatricyclo [3.2.1.02,⁴] oct-6-en-2-yl}hexyl)-1-sila-2-lithacyclopropane. The work was based on a molecular dynamics (MD) of 1ns, using the CHARMM22 force field, with step 0.001 ps. Calculations indicate that the final structure, arrangement have the tendency to form a single layer micellar structure, when molecular dynamics is performed with a single layer. However, when molecular dynamics were carried out in several layers, indicates the behavior of a liotropic nematic liquid crystal order. Kurumi features the structure polar-apolar-polar predominant. Limitations our study has so far been limited to computational simulation via quantum mechanics e molecular mechanics (QM/MM), an applied theory. Our results and calculations are compatible and with the theory of QM/MM, but their physical experimental verification depend on advanced techniques for their synthesis, obtaining laboratory for experimental biochemical. Going beyond imagination, the most innovative and challenging proposal of the work advances the construction of a structure compatible with the formation of a “new DNA”, based now on the kurumi molecule.

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