Search Results - "HIRAI, YUICHI"

n-type kesterite thermoelectric (Cu1−xAgx)2ZnSnS4 single crystals exceeding dimensionless figure of merit value of 1.0 by Nagaoka, Akira, Miura, Shoma, Nakashima, Koki, Hirai, Yuichi, Higashi, Tomohiro, Yoshino, Kenji, Nishioka, Kensuke

“…The lack of attractive n-type thermoelectric materials greatly restricts their applications because most high-performance materials are p-type conductors, such…”
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Organic linkers control the thermosensitivity of the emission intensities from Tb(iii) and Eu(iii) in a chameleon polymer by Hatanaka, Miho, Hirai, Yuichi, Kitagawa, Yuichi, Nakanishi, Takayuki, Hasegawa, Yasuchika, Morokuma, Keiji

“…Thermometers whose emission color gradually changes with temperature are called chameleon emitters. In this study, we discuss the mechanism of the…”
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Lifetimes of Lanthanide(III) Triboluminescence Excited by Aerodynamic Shock Waves by Hirai, Yuichi, Kotani, Akira, Sakaue, Hirotaka, Kitagawa, Yuichi, Hasegawa, Yasuchika

“…Triboluminescence (TL) has been known since the 17th century and is observed in various solid-state materials, but the fundamental mechanisms have still not…”
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Thermoelectric Conversion Efficiency of 4% in Environmental-Friendly Kesterite Single Crystal by Nagaoka, Akira, Nagatomo, Katsuma, Nakashima, Koki, Hirai, Yuichi, Ota, Yasuyuki, Yoshino, Kenji, Nishioka, Kensuke

“…Multinary Cu2ZnSnS4 (CZTS)-based materials have attracted considerable attention for thermoelectric (TE) power generation owing to their cost-effectiveness and…”
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Photo- and thermo-stable luminescent beads composed of Eu(III) complexes and PMMA for enhancement of silicon solar cell efficiency by Kataoka, Hisataka, Kitano, Tetsuo, Takizawa, Toshiki, Hirai, Yuichi, Nakanishi, Takayuki, Hasegawa, Yasuchika

“…Photo- and thermo-stable luminescent beads composed of Eu(hfa)3(TPPO)2 (hfa: hexafluoroacetylacetonate, TPPO: triphenylphosphine oxide) and PMMA…”
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Structural metamorphosis and photophysical properties of thermostable nano- and microcrystalline lanthanide polymer with flexible coordination chains by Nakanishi, Takayuki, Hirai, Yuichi, Xu, Jian, Takeda, Takashi, Watanabe, Shunsuke, Yasumori, Atsuo, Hakamada, Shou, Kitagawa, Yuichi, Hasegawa, Yasuchika

“…Luminescent lanthanide coordination polymer crystals (LCPCs) represent an area of growing interest in materials chemistry owing to their unique and tailorable…”
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Structural Manipulation of Triboluminescent Lanthanide Coordination Polymers by Side-Group Alteration by Hirai, Yuichi, Ferreira da Rosa, Pedro Paulo, Nakanishi, Takayuki, Kitagawa, Yuichi, Fushimi, Koji, Seki, Tomohiro, Ito, Hajime, Hasegawa, Yasuchika

“…Novel Eu­(III) coordination polymers with furan-based bridging ligands [Eu­(hfa)3(Cy)] n and [Eu­(hfa)3(Tol)] n (hfa: hexafluoroacetylacetonato, Cy:…”
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Visualization of icing of supercooled water using Tb(III)-based temperature-sensitive paint by Hirai, Yuichi, Mallette, Adam, Nishio, Yusaku, Patterson, Wesley, Hasegawa, Yasuchika, Sakaue, Hirotaka

“…•temperature-sensitive paint composed of Tb(hfa)3(tppo)2 and silicon grease/n-heaxne medium was prepared.•The photophysical properties of Tb(hfa)3(tppo)2-based…”
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Bright Lanthanide III Triboluminescence despite Low Photoluminescence, and Dual Triboluminescence and Mechano‐Responsive Photoluminescence by Hirai, Yuichi, Van Baaren, Stann, Ohmura, Takahito, Nakanishi, Takayuki, Takeda, Takashi, Kitagawa, Yuichi, Hasegawa, Yasuchika, Métivier, Rémi, Allain, Clémence

“…In pursuit of a new family of mechanically responsive luminescent materials, it is aimed to differentiate triboluminescence (TL) from photoluminescence (PL). A…”
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Origin of Concentration Quenching in Ytterbium Coordination Polymers: Phonon‐Assisted Energy Transfer by Omagari, Shun, Nakanishi, Takayuki, Hirai, Yuichi, Kitagawa, Yuichi, Seki, Tomohiro, Fushimi, Koji, Ito, Hajime, Hasegawa, Yasuchika

“…Phonons are important in energy transfer for compensating the energy mismatch between a donor and an acceptor. In inorganic hosts doped with lanthanides,…”
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Amorphous Formability and Temperature-Sensitive Luminescence of Lanthanide Coordination Glasses Linked by Thienyl, Naphthyl, and Phenyl Bridges with Ethynyl Groups by Hirai, Yuichi, Ferreira da Rosa, Pedro Paulo, Nakanishi, Takayuki, Kitagawa, Yuichi, Fushimi, Koji, Hasegawa, Yasuchika

“…The glass-transition properties and temperature-sensitive luminescence of lanthanide (Ln(III)) coordination compounds are reported. The glass formability was…”
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Origin of Concentration Quenching in Ytterbium Coordination Polymers: Phonon‐Assisted Energy Transfer by Omagari, Shun, Nakanishi, Takayuki, Hirai, Yuichi, Kitagawa, Yuichi, Seki, Tomohiro, Fushimi, Koji, Ito, Hajime, Hasegawa, Yasuchika

“…Invited for the cover of this issue are Takayuki Nakanishi from Hokkaido University, Sapporo, Japan, and co‐workers. The cover image shows the YbIII…”
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On Sense and Deform: Molecular Luminescence for Mechanoscience by Hirai, Yuichi

“…Mechanoscientific research fields encompassing chemistry, physics, and biology have advanced significantly over the last two decades. Notably, the study of…”
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Development of a new type micro slurry-jet erosion (MSE) tester for evaluation of wear properties of hard thin coatings by Iwai, Yoshiro, Matsubara, Tohru, Hirai, Yuichi, Hogmark, Sture

“…Versatile and reliable techniques for evaluation of hard thin coatings are necessary for the development and tribological assessment of new coatings. We have…”
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A Report of 7 Cases of Adrenal Tumors Secreting Both Cortisol and Aldosterone by ADACHI, Junji, HIRAI, Yuichi, TERUI, Ken, NAKANO, Tomoko, FUKUDA, Yoshiko, SUDA, Toshihiro, SASANO, Hironobu

“…We report 7 cases of adrenal tumors with concurrent increases in cortisol and aldosterone secretion, which we have examined over the last 2 years. We also…”
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Triboluminescence of Lanthanide Coordination Polymers with Face‐to‐Face Arranged Substituents by Hirai, Yuichi, Nakanishi, Takayuki, Kitagawa, Yuichi, Fushimi, Koji, Seki, Tomohiro, Ito, Hajime, Hasegawa, Yasuchika

“…Luminescence upon the grinding of solid materials (triboluminescence, TL) has long been a puzzling phenomenon in natural science and has also attracted…”
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Interaction of the Hemagglutinin Stalk Region with Cell Adhesion Molecule (CADM) 1 and CADM2 Mediates the Spread between Neurons and Neuropathogenicity of Measles Virus with a Hyperfusogenic Fusion Protein by Takemoto, Ryuichi, Hirai, Yuichi, Watanabe, Shumpei, Harada, Hidetaka, Suzuki, Tateki, Hashiguchi, Takao, Yanagi, Yusuke, Shirogane, Yuta

“…Measles virus (MeV), the causative agent of measles, is an enveloped RNA virus of the family which remains an important cause of childhood morbidity and…”
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Slowly Progressive Type 1 Diabetes Mellitus Associated with Vitiligo Vulgaris, Chronic Thyroiditis, and Pernicious Anemia by SUZUKI, Chiori, HIRAI, Yuichi, TERUI, Ken, KOHSAKA, Akira, AKAGI, Tomoaki, SUDA, Toshihiro

“…A 81-year-old woman was diagnosed as having diabetes mellitus (DM) at 58 years of age. She started insulin therapy the following year, but her blood sugar…”
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Luminescent Europium(III) Coordination Zippers Linked with Thiophene-Based Bridges by Hirai, Yuichi, Nakanishi, Takayuki, Kitagawa, Yuichi, Fushimi, Koji, Seki, Tomohiro, Ito, Hajime, Hasegawa, Yasuchika

“…Novel EuIII coordination polymers [Eu(hfa)3(dpt)]n (dpt: 2,5‐bis(diphenylphosphoryl)thiophene) and [Eu(hfa)3(dpedot)]n (dpedot:…”
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Organo-lanthanide luminophores bridged by phosphine oxide ligands by Hirai, Yuichi, Nakanishi, Takayuki, Hasegawa, Yasuchika

“…Organo-lanthanide luminophores composed of lanthanide ions and specific phosphine oxide ligands exhibit characteristic photo- and thermo-properties for future…”
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