PDLC: influence of droplet order parameter in light transmittance

Bloisi, F.; Ruocchio, C.; Terrecuso, P.; Vicari, L.

doi:10.1016/0030-4018(95)00638-9

Cited by 19 publications

(18 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this work, all analysis is performed for fully-formed nematic droplets and thus S d → 0 corresponds to the latter state. From a general optical applications perspective, lower values of S d correspond to nematic droplets which scatter light, while higher values of S d correspond to nematic droplets with improved optical transparency 50.…”

mentioning

confidence: 99%

Formation and field-driven dynamics of nematic spheroids

Abukhdeir

2017

Soft Matter

View full text Add to dashboard Cite

Emerging technologies based on liquid crystal (LC) materials increasingly leverage the presence of nanoscale defects, unlike the canonical application of LCs -LC displays. The inherent nanoscale characteristics of LC defects present both significant opportunities and barriers for the application of this fascinating class of materials.Simulation-based approaches to the study of the effects of confinement and interface anchoring conditions on LC domains has resulted in significant progress over the past decade, where simulations are now able to access experimentally-relevant micron-scales while simultaneously capturing nanoscale defect structures. In this work, continuum simulations were performed in order to study the dynamics of micron-scale nematic LC droplets of varying spheroidal geometry. Nematic droplets are one of the simplest inherently defect-containing LC structures and are also relevant to polymer-dispersed 1 arXiv:1702.05404v1 [cond-mat.soft]

show abstract

mentioning

confidence: 99%

Formation and field-driven dynamics of nematic spheroids

Abukhdeir

2017

Soft Matter

View full text Add to dashboard Cite

show abstract

“…The application of an electric field (right) aligns LC molecules and, with a suitable choice of refractive indexes of polymer and LC, is highly transparent, at least for light at normal incidence (Reprinted with permission Bloisi and Vicari (2003b). Copyright 2003 IOP Publishing Ltd.) In the OFF state, each droplet behaves like a uniaxial optical material (Bloisi et al 1996b) (in Fig. 5 double arrows represent their optical axes) having "droplet refractive indexes" n do (ordinary) and n de (extraordinary), but the whole film behaves like an isotropic inhomogeneous material.…”

Section: Working Principlementioning

confidence: 99%

Liquid Crystal Polymer Composite Materials for LCDs

Bloisi¹,

Vicari²,

Nasti³

2014

Handbook of Visual Display Technology

View full text Add to dashboard Cite

Digital displays nowadays play an essential and ubiquitous role in everyday life, and, in several applications, flexibility (i.e., the possibility to bend the device) or, at least, bending capability (i.e., the possibility to manufacture devices on a curved surface) is desirable or required. Polymer-dispersed liquid crystals (PDLCs) and other liquid crystal/polymer compounds are an interesting class of composite materials for the realization of flexible displays, since they couple the electrooptical properties of liquid crystals to the mechanical properties of polymers and can take full advantage from electronic properties of conducting copolymers. In this chapter, we will briefly discuss preparation techniques and then illustrate the working principle corresponding to different liquid crystal configurations (nematic, chiral, smectic, ferroelectric, holographic) with some examples

show abstract

“…Bloisi et al 13 devised a mathematical model for light transmittance and tested it experimentally. Vicari 14 presented another model to describe the optical phase shift induced by polymer-dispersed LCs on light impinging transversely on the PDLC.…”

Section: Introductionmentioning

confidence: 99%

Influence of different polyesters and their molecular weight on the textural and electrooptical behavior of polymer‐dispersed liquid crystals

Kundu

Verma

Raina

2002

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:The textural and electrooptical behavior of a nematic liquid crystal (LC) dispersed in a flexible and rigid polyester was studied. The dispersion of LC in the polymer matrix and light transmission through the polymer-dispersed liquid crystal (PDLC) is governed by the nature of the polymer, its molecular weight, and the applied voltage. It was observed that the transmission of light and the dispersion of LC maximizes their respective values at the minimum molecular weight irrespective of the nature of the polymer and at the maximum voltage. The reason is the predominance of chain alignment over entanglement at the minimum molecular weight. As molecular weight increases, the transmission of light as well as the dispersion of LC in the polymer may increase or decrease depending on the predominance of chain entanglement or chain alignment. The alignment of LC droplets in the direction of the applied voltage is increased by an increase in the applied voltage, causing enhancement of the light transmission.

show abstract

PDLC: influence of droplet order parameter in light transmittance

Cited by 19 publications

References 5 publications

Formation and field-driven dynamics of nematic spheroids

Formation and field-driven dynamics of nematic spheroids

Liquid Crystal Polymer Composite Materials for LCDs

Influence of different polyesters and their molecular weight on the textural and electrooptical behavior of polymer‐dispersed liquid crystals

Contact Info

Product

Resources

About