Journal ArticleDOI
New display based on electrically induced index‐matching in an inhomogeneous medium
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TLDR
In this paper, the operation of a light modulation device that employs electric field controlled light scattering in an inhomogeneous medium is described, where the orientation of a nematic liquid crystal, contained in micrometer sized inclusions in a nonabsorbing solid, is changed to produce a varying refractive index.Abstract:
The operation of a new light modulation device that employs electric field controlled light scattering in an inhomogeneous medium is described. The orientation of a nematic liquid crystal, contained in micrometer sized inclusions in a nonabsorbing solid, is changed to produce a varying refractive index. When the refractive index of the liquid crystal matches that of the solid, the composite medium is nonscattering and transparent. If the refractive indices do not match, the medium is scattering and opaque. High contrast ratios have been measured for transmitted light with a response time of a ∼1 ms. The application of this technique to passive display devices is discussed.read more
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Graphene photonics and optoelectronics
TL;DR: Graphene has high mobility and optical transparency, in addition to flexibility, robustness and environmental stability as discussed by the authors, and its true potential lies in photonics and optoelectronics, where the combination of its unique optical and electronic properties can be fully exploited, even in the absence of a bandgap, and the linear dispersion of the Dirac electrons enables ultrawideband tunability.
Journal ArticleDOI
Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems
Andrea C. Ferrari,Francesco Bonaccorso,Francesco Bonaccorso,Vladimir I. Fal'ko,Konstantin S. Novoselov,Stephan Roche,Peter Bøggild,Stefano Borini,Frank H. L. Koppens,Vincenzo Palermo,Nicola M. Pugno,Nicola M. Pugno,Nicola M. Pugno,Jose A. Garrido,Roman Sordan,Alberto Bianco,Laura Ballerini,Maurizio Prato,Elefterios Lidorikis,Jani Kivioja,Claudio Marinelli,Tapani Ryhänen,Alberto F. Morpurgo,Jonathan N. Coleman,Valeria Nicolosi,Luigi Colombo,Albert Fert,Albert Fert,Mar García-Hernández,Adrian Bachtold,Grégory F. Schneider,Francisco Guinea,Cees Dekker,Matteo Barbone,Zhipei Sun,Costas Galiotis,Alexander N. Grigorenko,Gerasimos Konstantatos,Andras Kis,Mikhail I. Katsnelson,Lieven M. K. Vandersypen,A. Loiseau,Vittorio Morandi,Daniel Neumaier,Emanuele Treossi,Vittorio Pellegrini,Vittorio Pellegrini,Marco Polini,Alessandro Tredicucci,Gareth M. Williams,Byung Hee Hong,Jong Hyun Ahn,Jong Min Kim,Herbert Zirath,Bart J. van Wees,Herre S. J. van der Zant,Luigi Occhipinti,Andrea di Matteo,Ian A. Kinloch,Thomas Seyller,Etienne Quesnel,Xinliang Feng,K.B.K. Teo,Nalin Rupesinghe,Pertti Hakonen,Simon R. T. Neil,Quentin Tannock,Tomas Löfwander,Jari M. Kinaret +68 more
TL;DR: An overview of the key aspects of graphene and related materials, ranging from fundamental research challenges to a variety of applications in a large number of sectors, highlighting the steps necessary to take GRMs from a state of raw potential to a point where they might revolutionize multiple industries are provided.
Journal ArticleDOI
Functional liquid-crystalline assemblies: self-organized soft materials.
TL;DR: New approaches to the functionalization of liquid crystals are described and it is shown how the design ofliquid crystals formed by supramolecular assembly and nano-segregation leads to the formation of a variety of new self-organized functional materials.
Journal ArticleDOI
Field controlled light scattering from nematic microdroplets
TL;DR: In this article, the light scattering and electro-optic response of new material with display potential are investigated, which consist of microdroplets of nematic liquid crystals which are spontaneously formed in a solid polymer at the time of its polymerization.
Patent
Encapsulated liquid crystal and method
TL;DR: In this paper, the authors described methods for encapsulating liquid crystal material and for making a liquid crystal device using such encapsulated liquid crystal materials, such as nematic material, which is used in liquid crystal devices such as relatively large size visual display devices.
References
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Journal ArticleDOI
Electro-wetting displays
Gerardo Beni,Susan Hackwood +1 more
TL;DR: In this article, a novel effect, electro wetting, can be the basis of passive displays which switch reversibly from transparent to white, have fast response time (<1.0 ms), and can be operated with low voltages and low power consumption.
Journal ArticleDOI
ir‐laser‐addressed thermo‐optic smectic liquid‐crystal storage displays
TL;DR: The first practical application of smectic liquid crystals, an infrared-laser-addressed light valve for the recording, storage, and display of high-resolution graphic images, was described in this article.
Journal ArticleDOI
Electric-Field-Induced Phase Change in Cholesteric Liquid Crystals
TL;DR: Optically negative cholesteric liquid-crystal films can be transformed to an optically positive state by applying high d-c electric fields as mentioned in this paper, where the helical structure is converted to either a planar smectic, or a linear nematic, structure.
Journal ArticleDOI
Dynamic scattering in nematic liquid crystals
TL;DR: In this paper, a new electro-optic effect based on the disruptive effects of ion transport through certain classes of nematic liquid crystals is presented, which scatters light strongly (appears white) when subjected to fields of 5 × 103 V/cm.
Journal ArticleDOI
Boundary‐layer model of field effects in a bistable liquid‐crystal geometry
TL;DR: In this paper, the authors describe the distortions and energies of bistable planar horizontal and vertical states, and nonplanar twist states in a tilted geometry, using exact numerical solutions of the equilibrium equations as well as a boundary layer approximation in the high-field limit.