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Keiki Kishikawa

Researcher at Chiba University

Publications -  236
Citations -  4025

Keiki Kishikawa is an academic researcher from Chiba University. The author has contributed to research in topics: Liquid crystal & Hydrogen bond. The author has an hindex of 31, co-authored 226 publications receiving 3627 citations. Previous affiliations of Keiki Kishikawa include Tokushima Bunri University & Massachusetts Institute of Technology.

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Hierarchical organization of photoresponsive hydrogen-bonded rosettes.

TL;DR: Hydrogen-bonded disk-shaped aggregates (rosettes) composed of azobenzene-appended melamine and barbiturate or cyanurate are investigated in view of their hierarchical organization and photoresponsive behavior, and dynamic light scattering and UV-irradiation experiments revealed that the dissociation and the reformation of columnar aggregates can be controlled by the trans-cis isomerization of the azOBenzene moiety.
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Biomimetic non-iridescent structural color materials from polydopamine black particles that mimic melanin granules

TL;DR: In this paper, a novel approach for creating non-iridescent bright structural color materials from polydopamine (PDA) black particles is presented, where two biomimetic features, melanin granules and the amorphous structures found in nature, were incorporated into these materials, consisting of PDA black particles to develop a bright and non iridescent structural color without using any additives.
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A ferroelectrically switchable columnar liquid crystal phase with achiral molecules: superstructures and properties of liquid crystalline ureas.

TL;DR: In this article, columnar liquid crystalline compounds N,N‘-bis(3,4,5-trialkoxylphenyl)ureas 1a−c (R = n-C8H17, n -C12H25, and n-c16H33) were synthesized, and their phase transitions were measured by differential scanning calorimetery.
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Full-Color Biomimetic Photonic Materials with Iridescent and Non-Iridescent Structural Colors

TL;DR: A facile method for the preparation of biomimetic core-shell particles with melanin-like polydopamine (PDA) shell layers that enabled the production of both iridescent and non-iridescent structural colors from only one component.