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RIKEN Center for Emergent Matter Science

4 ARTICLES PUBLISHED IN JoVE

Engineering

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

¹RIKEN Center for Emergent Matter Science (CEMS)

Here, we present a protocol to trigger an orientational transition of a liquid crystal in response to temperature. Methodologies are described for preparing a sample in order to observe the transition and the detailed transitional evolution.

Chemistry

Spatiotemporally Controlled Nuclear Translocation of Guests in Living Cells Using Caged Molecular Glues as Photoactivatable Tags

Rina Mogaki¹, Kou Okuro¹, Akio Arisaka¹, Takuzo Aida^1,2

¹Department of Chemistry and Biotechnology, School of Engineering, University of Tokyo, ²Riken Center for Emergent Matter Science

This protocol describes light-triggered nuclear translocation of guests in living cells using caged molecular glue tags. This method is promising for site-selective nuclear-targeting drug delivery.

Chemistry

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Shoichi Tokunaga^*1, Mengyan Zeng^*1,2, Yoshimitsu Itoh¹, Fumito Araoka³, Takuzo Aida³

¹Department of Chemistry and Biotechnology, The University of Tokyo, ²Department of Chemistry, Tsinghua University, ³RIKEN Center for Emergent Matter Science

A protocol for the fabrication of a reflective cholesteric liquid crystalline display device containing a redox-responsive chiral dopant allowing quick and low-voltage operation is presented.

Chemistry

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Satoshi Aya¹, Péter Salamon², Daniel A. Paterson³, John M. D. Storey³, Corrie T. Imrie³, Fumito Araoka¹, Antal Jákli⁴, Ágnes Buka²

¹RIKEN Center for Emergent Matter Science (CEMS), ²Institute for Solid State Physics and Optics, Wigner Research Center for Physics, Hungarian Academy of Sciences, ³Department of Chemistry, School of Natural and Computing Sciences, University of Aberdeen, ⁴Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University

This protocol demonstrates the preparation of a photorheological material that exhibits a solid phase, various liquid crystalline phases, and an isotropic liquid phase by increasing temperature. Presented here are methods for measuring the structure-viscoelasticity relationship of the material.