Takeo Sasaki
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View article: Synthesis of Poly(olefin sulfone)s That Release Low-Molecular-Weight Bases by Light Absorption and Investigation of Their Photoinduced Depolymerization
Synthesis of Poly(olefin sulfone)s That Release Low-Molecular-Weight Bases by Light Absorption and Investigation of Their Photoinduced Depolymerization Open
Poly-(olefin sulfone)-s react with bases, leading to a depolymerization reaction, and convert themselves into monomers. A poly-(olefin sulfone) with an incorporated photobase generator undergoes depolymerization when exposed to light and s…
View article: Detection of phase change of light using photorefractive liquid crystal and its application to laser ultrasonics
Detection of phase change of light using photorefractive liquid crystal and its application to laser ultrasonics Open
Laser ultrasonics using a photorefractive liquid crystal is investigated with coaxial- and counter-optical setups. The proposed laser ultrasonic method involves irradiating an object with a laser pulse to produce an ultrasonic vibration an…
View article: Photorefractive flexoelectric liquid crystal mixtures and their application to laser ultrasonics
Photorefractive flexoelectric liquid crystal mixtures and their application to laser ultrasonics Open
A photorefractive effect of mixtures of flexoelectric liquid-crystal (flex LC) was investigated and applied to laser ultrasonics. Mixtures of flex LC, composed of smectic-C liquid crystals, photoconductive chiral compounds, and a sensitize…
View article: Effect of the concentration of chiral compound on the photorefractive effect of flexoelectric smectic liquid crystal blends
Effect of the concentration of chiral compound on the photorefractive effect of flexoelectric smectic liquid crystal blends Open
The photorefractive effect of flexoelectric smectic liquid crystal blends was investigated. Smectic liquid crystal blends, composed of smectic-C liquid crystals, photoconductive chiral compounds and a sensitizer, are known to exhibit a lar…
View article: Molecular design of viologens to exhibit low-order liquid-crystalline phases
Molecular design of viologens to exhibit low-order liquid-crystalline phases Open
By systematically varying the molecular structure of viologen, it was found that the asymmetry of the rigid core due to the position of the ionic sites has a significant influence on the formation of the low-order liquid-crystalline phases.
View article: Bulk Alignment of Chromonic Aggregates During Swelling of Hydrogels
Bulk Alignment of Chromonic Aggregates During Swelling of Hydrogels Open
Front Cover: In article 1900631, Khoa V. Le and co-workers demonstrate that chromonic aggregates binding to a positively charged hydrogel network through ionic bonds can be uniaxially aligned during the swelling of the hydrogel. Such chrom…
View article: Simultaneous formation behaviour of surface structures and molecular alignment by patterned photopolymerisation
Simultaneous formation behaviour of surface structures and molecular alignment by patterned photopolymerisation Open
Highly functional soft materials with fine control of molecular alignment are of great interest for the applications in various fields. However, the current method of molecular alignment still has some challenges. Recently, we have develop…
View article: The Photorefractive Effect in Liquid Crystals
The Photorefractive Effect in Liquid Crystals Open
This chapter summarizes the state of the art of research regarding photorefractive liquid crystals. Photorefractive effect is of interest because it can be used to obtain dynamic holograms, based on interference between dual laser beams wi…
View article: Spectral tomographic analysis of Bremsstrahlung X-rays generated in a laser-produced plasma
Spectral tomographic analysis of Bremsstrahlung X-rays generated in a laser-produced plasma Open
A new approach is proposed to analyze Bremsstrahlung X-rays that are emitted from laser-produced plasmas (LPP) and are measured by a stack type spectrometer. This new method is based on a spectral tomographic reconstruction concept with th…
View article: Alignment layer-free molecular ordering induced by masked photopolymerization with non-polarized light
Alignment layer-free molecular ordering induced by masked photopolymerization with non-polarized light Open
Controlled and uniform molecular alignment can provide and enhance functionality in polymer films. We first report that masked photopolymerization with non-polarized light enables direct and precise control of molecular alignment without u…
View article: Inside Back Cover: Unusual Electro‐Optic Kerr Response in a Self‐Stabilized Amorphous Blue Phase with Nanoscale Smectic Clusters (ChemPhysChem 10/2016)
Inside Back Cover: Unusual Electro‐Optic Kerr Response in a Self‐Stabilized Amorphous Blue Phase with Nanoscale Smectic Clusters (ChemPhysChem 10/2016) Open
The Inside Back Cover picture displays an amorphous blue phase formed by a single-component chiral bent-core liquid crystal, which is investigated to obtain the response time and electro-optic Kerr constant. The unusual behavior is explain…
View article: Dynamic Amplification of Optical Signals by Photorefractive Ferroelectric Liquid Crystals
Dynamic Amplification of Optical Signals by Photorefractive Ferroelectric Liquid Crystals Open
In this chapter, the photorefractive effect in photoconductive ferroelectric liquid crystal blends is described. A blend of liquid crystals that form chiral smectic C phase and photoconductive compounds shows the photorefractive effect. Th…