212 citations · 514 across the 13 of their papers we have counts for
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Shear-mode Direct Piezoelectric Response of Ferroelectric Nematic Liquid Crystals
Péter Salamon, Marcell Tibor Máthé, Hiroya Nishikawa +2
Piezoelectricity (linear coupling between mechanical deformation and electric signal) was originally observed only in solid crystals. Recently, it was discovered that liquid ferroe…
Electrically Tunable Heliconical Smectic Superstructure in Polar Fluids
Hiroya Nishikawa, Dennis Kwaria, Atsuko Nihonyanagi +3
The ferroelectric nematic (NF) phase and related polar liquid-crystalline phases form a new class of strongly polarized yet fluid soft matter. Well-recognized heliconical ferroelec…
Spontaneous Twist of Ferroelectric Smectic Blocks in Polar Fluids
Hiroya Nishikawa, Yasushi Okumura, Dennis Kwaria +2
In soft matter, the polar orientational order of molecules can facilitate the coexistence of structural chirality and ferroelectricity. The ferroelectric nematic (NF) state, exhibi…
Giant Electro-Viscous Effects in Polar Fluids with Paraelectric-Modulated Antiferroelectric-Ferroelectric Phase Sequence
Hiroya Nishikawa, Péter Salamon, Marcell Tibor Máthé +2
The recently discovered ferroelectric nematic liquid-crystal material DIO exhibits an antiferroelectric (AF) phase, characterized by a sinusoidally modulated structure between the…
Ferroelectric Smectic C Liquid Crystal Phase with Spontaneous Polarization in the Direction of the Director
Hirotsugu Kikuchi, Hiroya Nishikawa, Hiroyuki Matsukizono +4
In our previous study, we demonstrated the existence of an unidentified ferroelectric smectic phase in the low-temperature region of the ferroelectric smectic A phase, where the la…
Transformation of polar nematic phases in the presence of electric field
A. V. Emelyanenko, V. Yu. Rudyak, F. Araoka +2
Only a few years have passed since discovery of polar nematics, and now they are becoming the most actively studied liquid crystal materials. Despite numerous breakthrough findings…
Observation of Spontaneous Helielectric Nematic Fluids: Electric Analogy to Helimagnets
Xiuhu Zhao, Junchen Zhou, Hiroya Nishikawa +5
About a century ago, Born proposed a possible matter of state, ferroelectric fluid, might exist if the dipole moment is strong enough. The experimental realisation of such states n…