Search Results 1-20 of 942

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Electret-Based Vibrational Energy Generator without Any Charging Process: Utilization of Spontaneous Orientation of Polar Organic Molecules [in Japanese]

TANAKA Yuya , MATSUURA Noritaka , ISHII Hisao

… To solve this problem, we developed a novel E-VEG that does not require any charging process by utilizing spontaneous orientation of polar organic molecules which have been widely used for organic light-emitting diodes. …

Vacuum and Surface Science 64(1), 16-21, 2021

J-STAGE
2

Effect of Organic Additives on Electrodeposition Behavior of Zn from Zincate Solution Containing Potassium Hydroxide and Its Micro Structure [in Japanese]

Fukumoto Kenta , Oue Satoshi , Niwa Tsukasa , Kikuchi Yoshiharu , Akamatsu Shinya , Nakano Hiroaki

… The polarization resistance at 200 A·m−2 …

Journal of the Japan Institute of Metals and Materials, 2021

J-STAGE
3

Quantitative analysis of the electrostatic and electronic polarization energies in molecularly mixed films of organic semiconductors

UEMURA Yuki , ABD-RAHMAN Syed A. , YANAGISAWA Susumu , YOSHIDA Hiroyuki

… From the precisely determined ionization energies and electron affinities, we directly determine the electronic polarization energy D and electrostatic energy S as a function of mixing ratio. … Furthermore, we examined the molecular orientation dependence of S and D values. …

Physical Review B (102), 125302, 2020-09-03

IR
4

Spectral organization of the compound eye of a migrating nymphalid, the chestnut tiger butterfly Parantica sita

Nicolas Nagloo , KINOSHITA Michiyo , ARIKAWA Kentaro , Nagloo Nicolas , 充代木下 , 謙太郎蟻川

… Extensive studies of migration in the iconic monarch butterfly Danaus plexippus have revealed that vision plays a crucial role in migratory orientation. … Here, we used intracellular electrophysiology, dye injection and electron microscopy to assess the spectral and polarization properties of the photoreceptors of a migrating nymphalid, Parantica sita. … The polarization sensitivity ratio is constant across spectral receptor classes at around 1.8. …

Journal of Experimental Biology = Journal of Experimental Biology, 2020-02-03

IR
5

Enhanced orientation of 1,3,5-tris(1-phenyl-1H-benzimidazole-2-yl)benzene by light irradiation during its deposition evaluated by displacement current measurement

TANAKA Yuya , TAZO Yuki , ISHII Hisao

… In vacuum-deposited film composed of organic polar molecules, polarization charges appear on the film surface owing to spontaneous orientation of the molecule. … Because its density (σpol) determines an amount of accumulation charge (σacc) in organic light-emitting diodes and output power in polar molecular-based vibrational energy generators (VEGs), control of molecular orientation is highly required. …

IEICE Transactions on Electronics, 2020

J-STAGE
6

Full Polarimetric ALOS-2/PALSAR-2 Analysis for the Location of Shorelines with Varying Orientation and Coastal Characteristics

ASAKA Tomohito , NONAKA Takashi , SUGIMURA Toshiro , WAKABAYASHI Hiroyuki

… The combined image has the advantage of being able to detect various terrain features and coastline orientation, which is not possible when using single polarization image analysis. …

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 18(6), 350-355, 2020

J-STAGE
7

Effect of Polyethylene Glycol and Glue on Electrodeposition Behavior of Zn from Electrowinning Solution and Its Crystal Structure

Uchida Keita , Oue Satoshi , Nakano Hiroaki

… With the addition of PEG, the deposits became fine platelets with preferred orientation of {1011} and layered pyramidally, while {1120} orientation was obtained, and the platelets grew perpendicularly to the substrate with the addition of glue. …

MATERIALS TRANSACTIONS 61(10), 1958-1966, 2020

J-STAGE
8

Effect of Thioglycolic Acid on Zn Electrodeposition on the Steel Sheets [in Japanese]

TSUCHIMOTO Kazuaki , IMOKAWA Toru , MATSUDA Takeshi , TAIRA Shoichiro

… Polarization curves revealed that addition of thioglycolic acid to the bath increased the critical current density for Zn deposition and decreased the overvoltage for Zn deposition. … Regarding the deposited Zn, the addition of thioglycolic acid increased the crystal orientation index of （0002） Zn and decreased the deposited Zn particle size. …

Journal of The Surface Finishing Society of Japan 71(9), 571-576, 2020

J-STAGE
9

Preparation of near-1-µm-thick {100}-oriented epitaxial Y-doped HfO2 ferroelectric films on (100)Si substrates by a radio-frequency magnetron sputtering method

SHIMURA Reijiro , MIMURA Takanori , SHIMIZU Takao , TANAKA Yoshitomo , INOUE Yukari , FUNAKUBO Hiroshi

… {100}-oriented epitaxial films were obtained on (100)ITO//(100)YSZ substrates, while the film orientation changed from {111} to {100} with increasing film thickness on (111)ITO//(111)YSZ substrates. … Their remanent polarization (Pr) and coercive fields (Ec) were about 5 µC/cm2 …

Journal of the Ceramic Society of Japan 128(8), 539-543, 2020

J-STAGE
10

Nonlinear Molecular Reorientation of Polymer-Stabilized Dye-Doped Liquid Crystals by Depolarized Laser Beam

Matsumoto Kohsuke , Usui Koji , Akamatsu Norihisa , Shishido Atsushi

… Liquid crystals (LCs) are the innovative materials that can control their molecular orientation using an optical field with a laser beam. … However, the molecular orientation has been explored only by a polarized laser beam. … In this study, we report the molecular reorientation of oligothiophene-doped LCs by an irradiation with a focused depolarized laser beam that has a spatial polarization pattern. …

Journal of Photopolymer Science and Technology 33(1), 77-80, 2020

J-STAGE
11

Arsenic Removal from Aqueous Solutions by Forward Osmosis

Pham Minh Tuan , Nishihama Syouhei , Yoshizuka Kazuharu

… This study investigated the effects of As concentration and pH in the feed solution, the salt concentration in the draw solution, and surface orientation of a FO membrane on As rejection. … The concentration polarization with respect to surface orientation was a key factor for As retention; …

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 53(3), 95-99, 2020

J-STAGE
12

Polar Switching of Dipolar Molecules Confined in Submicron- and Micron-sized Pores in Polymer Films

Yamamoto Ryosuke , Fujikawa Shigenori , Kimizuka Nobuo

… p-Nitroanisole (pNA) confined in submicron- and micron-sized pores in polyimide films shows enhanced dipolar polarization and polar switching characteristics in the liquid state, as revealed by hysteresis in the polarization (P)-electric field (E) curves. …

Chemistry Letters 49(3), 255-259, 2020

J-STAGE
13

Effect of Organic Additives on the Electrodeposition Behavior of Zn from an Alkaline Zincate Solution and Its Microstructure

Fukumoto Kenta , Oue Satoshi , Kikuchi Yoshiharu , Akamatsu Shinya , Takasu Tomio , Nakano Hiroaki

… The polarization curve was separated into partial polarization curves of Zn deposition and hydrogen evolution by using the galvanostatic data of Zn deposition. … The orientation index of the {1010} plane of Zn deposited from the solution containing PQ and QA increased with increasing current density. …

MATERIALS TRANSACTIONS 61(3), 497-505, 2020

J-STAGE
14

Effect of Polyethylene Glycol and Glue on Electrodeposition Behavior of Zn from Electrowinning Solution and Its Crystal Structure [in Japanese]

Uchida Keita , Oue Satoshi , Nakano Hiroaki

… With an addition of PEG, the deposits became fine platelets crystals with preferred orientation of {1011} and layered pyramidally, while the deposits orientated to {1120} preferentially and the platelets crystals grew perpendicularly to the substrate with an addition of glue. …

Journal of the Japan Institute of Metals and Materials 84(2), 58-65, 2020

J-STAGE
15

Angle dependence of dissociative tunneling ionization of NO in asymmetric two-color intense laser fields

Endo Tomoyuki , Fujise Hikaru , Hasegawa Hiroka , Matsuda Akitaka , Fushitani Mizuho , Tolstikhin Oleg I. , Morishita Toru , Hishikawa Akiyoshi

… The N^+ fragment produced by the dissociative ionization, NO→NO^++e^−→N^++O+e^−, exhibits a butterflylike momentum distribution peaked at finite angles with respect to the laser polarization direction. … For the highest kinetic energy component, the observed orientation dependence is well explained with theoretical calculations by the weak-field asymptotic theory for the 2π highest occupied molecular orbital (HOMO). …

Physical Review A 100(5), 2019-11

IR
16

Ultrafast isomerization-induced cooperative motions to higher molecular orientation in smectic liquid-crystalline azobenzene molecules

Hada Masaki , Yamaguchi Daisuke , Ishikawa Tadahiko , Sawa Takayoshi , Tsuruta Kenji , Ishikawa Ken , Koshihara Shin-Ya , Hayashi Yasuhiko , Kato Takashi

… The ultrafast orientation iscaused by the trans-to-cis isomerization of the azobenzene molecules. … Our observations areconsistent with simplified molecular dynamics calculations that revealed that the moleculesare aligned with the laser polarization axis by their cooperative motion after photoisomerization.This insight advances the fundamental chemistry of photoresponsive moleculesin soft matter as well as their ultrafast photomechanical applications. …

Nature Communications (10), 4159, 2019-09-13

IR
17

Computational Prediction of Adsorption Equilibrium for Nonionic Surfactants at the Oil/Water Interface

Somekawa Naoki , Yamauchi Atsuki , Eda Kazuo , Osakai Toshiyuki

… In the non-Bornian model, the small contribution from the long-range electrostatic interaction is ignored, and the solvation or resolvation energy is formulated based on the short-range solute molecule (or ion)-solvent interactions-cavity formation, Coulomb, polarization, charge transfer, etc. … The orientation angle (θ), the rotation angle (ω), and the penetration depth into the O phase (d) of the alcohols in the adsorption state could be estimated. …

Langmuir 35(35), 11345-11350, 2019-09-03

IR
18

Ultrafast isomerization-induced cooperative motions to higher molecular orientation in smectic liquid-crystalline azobenzene molecules

羽田真毅 , Masaki HADA , Daisuke Yamaguchi , Tadahiko Ishikawa , Takayoshi Sawa , Kenji Tsuruta , Ken Ishikawa , Shin-ya Koshihara , Yasuhiko Hayashi , Takashi Kato

… Herein, we describe the ultrafast formation of higher-orientation of liquid-crystalline (LC) azobenzene molecules via linearly polarized ultraviolet light (UV) using ultrafast time-resolved electron diffraction. … The ultrafast orientation is caused by the trans-to-cis isomerization of the azobenzene molecules. …

Nature Communications (10), 4159, 2019-09

IR
19

Improving detection sensitivity using magnetic orientation and polarization in microcrystals with optical anisotropy

Takeuchi Yuka , Mizukawa Yuri , Matsuda Mizushi , Iwasaka Masakazu , Hamasaki Atom

Japanese Journal of Applied Physics 58(9), 090902-090902, 2019-08-05

DOI
20

Spontaneous orientation polarization in organic light-emitting diodes

Noguchi Yutaka , Brütting Wolfgang , Ishii Hisao

Japanese Journal of Applied Physics 58(SF), SF0801-SF0801, 2019-05-24

DOI

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