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Hiroshi Yokoyama

Researcher at Kent State University

Publications -  468
Citations -  9540

Hiroshi Yokoyama is an academic researcher from Kent State University. The author has contributed to research in topics: Liquid crystal & Phase (matter). The author has an hindex of 46, co-authored 457 publications receiving 8999 citations. Previous affiliations of Hiroshi Yokoyama include Niigata University & Liquid Crystal Institute.

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Electromagnetic wave shielding transparent board, panel display device, electromagnetic wave shielding window, and electromagnetic wave shielding container, and method for manufacturing electromagnetic wave shielding transparent board

TL;DR: In this article, the authors proposed a method for manufacturing an electromagnetic wave shielding transparent board, where the tip of an ultrafine-diameter nozzle is arranged near a transparent substrate, and a voltage of a given waveform is applied to the liquid inside the nozzle 21 for the nozzle21 to eject droplets of the liquid containing ultra-fine diameter metal particulates onto the transparent substrate K for forming a conductive lattice pattern.
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Generation mechanism of shear yield stress for regular defect arrays in water-in-cholesteric liquid crystal emulsions

TL;DR: In this article, the authors investigated the rheological behavior of the quadrilateral defect array formed in cholesteric emulsions, which are composed of water, surfactants, and cholesterolic liquid crystals.
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Evaluation of the Nitrous Oxide Emission Reduction Potential of an Aerobic Bioreactor Packed with Carbon Fibres for Swine Wastewater Treatment

TL;DR: In this article, the authors constructed an experimental aerobic bioreactor packed with carbon fibres (CF) as an alternative to conventional activated sludge treatment, which achieved more than 80% reduction of N2O emissions, compared with the traditional AS treatment method.
Proceedings ArticleDOI

Electric force microscopy with a single carbon nanotube tip

TL;DR: Carbon nanotube tips offer a significant improvement over standard scanned probe microscope (SPM) tips for electrical characterization of nanodevice structures as discussed by the authors, and are compatible with requirements for integrated SPM_probe station instruments in which SPM-based lithography, topography, electric force microscopy, and traditional currentvoltage measurements are performed simultaneously or sequentially.
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Polycatenar mesogens with a perfluorinated moiety showing a variety of liquid crystalline polymorphism

TL;DR: In this paper, the roles of chemical structure of compositional segments in relation to liquid crystalline phase formation were investigated in polycatenar materials composed of a four-aromatic-ring core, with either a bulky or end-branched perfluorinated moiety attached at one end through a methylene spacer group.