Article
Materials Science, Multidisciplinary
Yuri Fukaya, Yukio Tanaka, Paola Gentile, Keiji Yada, Mario Cuoco
Summary: We study the non-trivial properties of non-centrosymmetric superconductors with spin-triplet pairing, and investigate the effects of spin-orbit coupling on the Josephson behavior. The results demonstrate the potential for designing superconducting orbitronics devices and explain anomalies in oxide interface superconductors.
NPJ QUANTUM MATERIALS
(2022)
Article
Physics, Applied
Gaia Germanese, Federico Paolucci, Giampiero Marchegiani, Alessandro Braggio, Francesco Giazotto
Summary: Recent theoretical predictions suggest that a superconducting tunnel junction can exhibit bipolar thermoelectric phenomena by breaking nonequilibrium spontaneous particle-hole symmetry in the presence of a large thermal gradient, leading to the realization of a thermoelectric Josephson engine.
PHYSICAL REVIEW APPLIED
(2023)
Article
Chemistry, Inorganic & Nuclear
Dabin Park, Minsu Kim, Jooheon Kim
Summary: By fabricating porous Bi2Si2Te6 nanosheets, the thermoelectric properties can be significantly enhanced. The introduction of porous structure effectively increases phonon scattering, leading to a decrease in the thermal conductivity and improved thermoelectric performance.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Electrical & Electronic
P. Sivagnanapalani, Naveed Iqbal Ansari, P. K. Panda
Summary: Calcium bismuth titanate (CBT), a BLSF material, shows linear decrease in resistivity with increasing temperature, making it a potential high-temperature sensor material.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yuriy Divin
Summary: The spectral analysis of THz and sub-THz emission from quantum cascade lasers was carried out using conventional YBa2Cu3O7-x bicrystal Josephson junctions. The Josephson frequencies of alternative bicrystal junctions extend further into the THz range. The THz losses in YBa2Cu3O7-x bicrystal junctions with mutually tilted c-axes were studied using Josephson admittance spectroscopy.
APPLIED SCIENCES-BASEL
(2023)
Article
Thermodynamics
S. G. Castillo-Lopez, C. Villarreal, R. Esquivel-Sirvent, G. Pirruccio
Summary: This theoretical study focuses on the near-field radiative heat transfer between high-T-c superconducting thin films, showing that thin films enhance heat transfer significantly compared to bulk plates. The optical response above and below T-c plays a crucial role, with the superconducting phase transition leading to a suppression of total heat flux.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Physical
Takanari Kashiwagi, Takumi Yuasa, Genki Kuwano, Takashi Yamamoto, Manabu Tsujimoto, Hidetoshi Minami, Kazuo Kadowaki
Summary: Studying the radiation characteristics of different thicknesses of SAMs allows for a deeper understanding of the radiation intensity, frequency, and working temperature characteristics of Bi2212-THz emitters. Through comparing the radiation characteristics of SAMs with different numbers of intrinsic Josephson junctions, insights into the emission characteristics of these devices can be gained for future improvements and applications.
Article
Thermodynamics
P. Kotrbacek, M. Chabicovsky, J. Kominek, O. Resl, H. Bellerova
Summary: This paper investigates the influence of water temperature on spray cooling and provides correlations and transformation functions to extend existing correlations. It fills the research gap by presenting generalized results.
APPLIED THERMAL ENGINEERING
(2022)
Review
Green & Sustainable Science & Technology
Sajjad Mahmoudinezhad, Meisam Sadi, Hamed Ghiasirad, Ahmad Arabkoohsar
Summary: High-temperature heat exchangers are widely studied for their benefits in industrial processes. This study provides extensive information about various designs, materials, and heat transfer fluids for high-temperature heat exchangers, addressing the technical challenges and gaps in the field. The research identifies suitable heat transfer fluids and commonly used configurations and materials, as well as critical issues such as corrosion and material degradation. The study also highlights the key parameters for high-temperature heat exchanger design and suggests areas for future research.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Metallurgy & Metallurgical Engineering
Yunus Azakli, Kerem Ozgur Gunduz, Sezgin Cengiz, Yucel Gencer, Mehmet Tarakci
Summary: Studies on synthetic NiAlCr-Ca and NiAlCr-Sr alloys revealed that the alloy containing Sr showed the best oxidation resistance, while the presence of Ca decreased oxidation resistance due to the formation of non-protective complex oxides and consumption of α-Al2O3 scale. The oxide scale on the Sr-containing alloy mainly consisted of α-Al2O3 phase with Sr-rich nodules, leading to minimal scale spallation compared to the Ca-containing alloys.
OXIDATION OF METALS
(2021)
Article
Engineering, Electrical & Electronic
Yan-Ting Wang, Jay C. LeFebvre, Ethan Y. Cho, Stephen J. McCoy, Hao Li, Genda Gu, Kazuo Kadowaki, Shane A. Cybart
Summary: This study reports the fabrication and measurement of an ab-plane Josephson junction on an exfoliated Bi2Sr2CaCu2O8+x single crystal flake. The junctions are formed using ion irradiation, exhibiting weak link behavior with confirmation of the DC Josephson effect. Simulations suggest that ion straggle deep into the film may be influencing the electrical properties, indicating potential for multi-dimensional Josephson devices when combined with intrinsic junctions.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2021)
Article
Materials Science, Ceramics
Ahmed A. M. El-Amir, Amira M. M. Amin, Emad M. M. Ewais, A. A. El-Maddah, Mohsen Arab, Ahmed A. Amer
Summary: Calcium-strontium aluminate cement (CSAC) was successfully prepared for the first time from celestite mineral and corundum via a solid-state reaction. The optimal mixes for CSAC preparation were selected based on physico-chemical and mechanical characteristics, meeting international standard requirements. The hydration products of the cement pastes were mainly strontium aluminate hydrates, demonstrating the potential industrial-scale utilization of celestite mineral in CSAC production.
CERAMICS INTERNATIONAL
(2021)
Article
Nuclear Science & Technology
Xin Wang, Bo Kuang, Wenjun Hu, Pengrui Qiao, Jieming Hou
Summary: This paper presents a theoretical analysis of the steady-state natural circulation characteristics of lead-bismuth eutectic (LBE) as a coolant in reactor systems. The study investigates the relationship between the mass flow rate and heating power, as well as the relationship between temperature differences. The analysis reveals that LBE natural circulation exhibits higher mass flow, temperature difference, and pressure loss compared to water or sodium under normal working conditions. Moreover, experimental studies and numerical simulations are conducted to study the natural circulation characteristics of LBE.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Chemistry, Physical
Anton Tuluk, Sybrand van der Zwaag, Yuanyu Wang
Summary: This work investigates the piezoelectric properties of BiFeO3-rich bulk piezoceramics and finds that the addition of PbTiO3 and SrTiO3 can enhance the piezoelectric properties and reduce the Curie temperature. The samples near the cubic-pseudocubic phase boundary exhibit the highest piezoelectric properties. Appropriate heat treatment leads to almost temperature-stable piezoelectric properties.
Article
Thermodynamics
Guoliang Zhang, Zhongan Jiang, Jihe Chen, Jianwu Chen, Bin Yang
Summary: Ventilation cooling is essential during the construction of high-temperature tunnels. This study analyzed the heat exchange on both sides of the ventilation duct during active cooling using theoretical analysis and numerical simulation. The results showed that factors such as temperature difference and heat flux had significant effects on the convection heat transfer inside the duct.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
M. Iwakuma, Y. Tsukigi, K. Nabekura, T. Ueno, R. Shindo, F. Kawahara, S. Honda, K. Tamura, K. Yun, S. Sato, K. Yoshida, A. Tomioka, M. Konno, T. Izumi, T. Machi, A. Ibi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2016)
Article
Engineering, Electrical & Electronic
M. Iwakuma, Y. Tsukigi, K. Nabekura, T. Ueno, R. Shindo, F. Kawahara, S. Honda, K. Tamura, K. Yun, S. Sato, K. Yoshida, A. Tomioka, M. Konno, T. Izumi, T. Machi, A. Ibi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2016)
Article
Engineering, Electrical & Electronic
M. Iwakuma, T. Ueno, K. Yun, S. Sato, K. Yoshida, A. Tomioka, T. Izumi, T. Machi, A. Ibi, K. Adachi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2016)
Article
Engineering, Electrical & Electronic
Masataka Iwakuma, Kohei Nabekura, Kiwook Yun, Kohichi Yoshida, Seiki Sato, Akira Tomioka, Msayuki Konno, Akira Ibi, Takato Machi, Teruro Izumi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2017)
Article
Engineering, Electrical & Electronic
Tatsuhito Ueno, Masataka Iwakuma, T. Ito, Kiwook Yun, Kazuhisa Adachi, Akira Tomioka, Y. Hase, Msayuki Konno, Teruo Izumi, Takato Machi, Akira Ibi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2017)
Article
Engineering, Electrical & Electronic
Tetsuya Ito, Masataka Iwakuma, Shun Miura, Teruo Izumi, Kazuhisa Adachi, Takato Machi, Akira Ibi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2018)
Article
Engineering, Electrical & Electronic
H. Oguro, T. Suwa, T. Suzuki, S. Awaji, K. Watanabe, M. Sugano, S. Machiya, M. Sato, T. Koganezawa, T. Machi, M. Yoshizumi, T. Izumi
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2013)
Article
Engineering, Electrical & Electronic
Kohei Higashikawa, Kenta Katahira, Masayoshi Inoue, Takanobu Kiss, Yuki Shingai, Masaya Konishi, Kazuya Ohmatsu, Takato Machi, Masateru Yoshizumi, Teruo Izumi, Yuh Shiohara
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2014)
Article
Physics, Multidisciplinary
Yutaka Itoh, Daisuke Goto, Takato Machi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2013)
Article
Physics, Multidisciplinary
Yutaka Itoh, Takato Machi, Ikuya Yamada, Masaki Azuma, Mikio Takano
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2013)
Article
Physics, Applied
K. Nakao, N. Hirata, A. Itoh, Y. Murayama, T. Seki, T. Machi, K. Tanabe
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2013)
Article
Physics, Applied
T. Machi, K. Nakao, T. Kato, T. Hirayama, K. Tanabe
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2013)
Article
Materials Science, Multidisciplinary
Yutaka Itoh, Takato Machi, Ayako Yamamoto
Article
Materials Science, Multidisciplinary
Yutaka Itoh, Takato Machi, Ayako Yamamoto
Proceedings Paper
Physics, Applied
Tsuyoshi Nakanishi, Takato Machi, Teruo Izumi, Ryo Teranishi, Tomohiro Kato, Takeharu Kato, Tsukasa Hirayama
PROCEEDINGS OF THE 28TH INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY (ISS 2015)
(2016)