Article
Thermodynamics
Daehee Kwon, Dongkuk Kang, The-Hung Dinh, Doo-Man Chun, Eunseop Yeom
Summary: This study investigates drop impacts on superheated textured surfaces and uncovers the phenomenon of a central liquid jet emanating from the impinging drop. Detailed and quantitative analysis is provided, correlating the height and speed of the central jet to varying impact conditions. By analyzing vapor bubble motion and contact boiling patterns, a hypothetical mechanism of jet formation is proposed based on experimental evidence and simplified heat transfer situations.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Engineering, Environmental
Lin Feng, Qingge Feng, Qihua Liang, Yuan Qi, Fanghong Qin, Kao Chen, Xiaoxiao Huang, Junyi Liu, Zhuoyan Huang
Summary: Amine-modified silica aerogel was synthesized as an efficient and environmentally friendly adsorbent for removing nanoparticles. Doping with 3-aminopropyltriethoxysilanes enhanced the adsorption capacity, making it 19 times more efficient than unmodified aerogel. The study provides a reliable adsorption approach for nanoparticle removal and investigates the intricate adsorption mechanism.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Yiwei Dong, Xiang Guo, Bo Xu, Pengfei Shao, Chunping Yin, Naixian Hou
Summary: This paper investigates the issues of plasma shielding and tapering during laser ablation of metals and proposes an improved dual-temperature model. Through numerical simulations and comparison with experimental results, it is demonstrated that the proposed model can accurately describe the process of metal ablation by femtosecond lasers.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Physical
Indre Aleknavicene, Evaldas Pabreza, Martynas Talaikis, Marija Jankunec, Gediminas Raciukaitis
Summary: Using ultrashort-pulse laser-induced plasma-assisted ablation on soda-lime glass, researchers developed SERS substrates with amorphous nanostructures and a silver layer, resulting in homogeneous SERS activity with consistent surface activity. The relatively modest enhancement factor was attributed to the amorphous features on the glass, which led to fewer hot spots but increased surface homogeneity. The use of soda-lime glass offers a cheaper and scalable alternative for routine SERS testing in various scientific fields.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Applied
Si Meng, Senlong Yu, Feiyu Tang, Xiangning Hu, Jian Lu, Xiang Fei, Meifang Zhu
Summary: A novel hollow silica aerogel fibers (SAFs) were developed using a wet spinning approach for dye removal from wastewaters. By adjusting surface characteristics and incorporating photocatalysis active nanoparticles, a photo-regenerable SAF-P25 adsorbent was successfully prepared, demonstrating long-term performance and wide applicability for dye removal in wastewater purification.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Thermodynamics
Yakang Xia, Xuan Gao, Ri Li
Summary: Smooth and laser-ablated silicon surfaces with different wettability were tested in subcooled pool boiling of water. The experiment focused on observing bubble phenomena and measuring surface temperature. It was found that the formation and departure of vapor bubbles varied significantly with the surface wettability. Nucleate boiling curves showed that both the heat transfer coefficient and critical heat flux increased with increasing surface wettability changing from super-hydrophobic to super-hydrophilic. The effect of surface wettability on heat transfer was quantitatively assessed using the surface-fluid factor, which increased with increasing surface wettability. The influence of surface wettability on heat transfer differed between hydrophilic and hydrophobic surfaces.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Physical
Wenjie Xu, Chengjuan Yang, Kuan Yang, Qi Yan, Yang Li, Qifan Wang, Jun Zhao, Minxia Li, Zhen Yang
Summary: Due to low surface tension, increasing the static contact angle (SCA) of refrigerant on a surface is difficult. Existing studies have used low surface energy coating to increase SCA, but this method suffers from coating peeling. This study used laser surface texturing to increase the SCAs of R134a and R1234ze (E) refrigerants on a surface. The results showed that the SCAs of both refrigerants were significantly increased compared to the polished surface, indicating improved hydrophobicity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Materials Science, Ceramics
Liza Basyrova, Pavel Loiko, Roman Maksimov, Vladislav Shitov, Josep Maria Serres, Uwe Griebner, Valentin Petrov, Magdalena Aguilo, Francesc Diaz, Xavier Mateos
Summary: The comparative study of Yb:Lu3Al5O12 and Yb:Lu2O3 ceramic materials reveals that the former has superior optical properties and laser performance.
CERAMICS INTERNATIONAL
(2021)
Article
Multidisciplinary Sciences
Allison M. Stanec, Zineb Hajjaj, Mary K. Carroll, Ann M. Anderson
Summary: A method of aesthetically enhancing silica aerogel monoliths through rapid supercritical extraction and incorporation of dyes is introduced. Dyes added to the precursor mixture can produce yellow, pink, and orange-toned aerogels. Laser engraving allows for the etching of text, patterns, and images onto the surface of the aerogel monolith without causing damage to the bulk structure, as well as cutting shapes and creating colorful mosaics.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2021)
Article
Materials Science, Multidisciplinary
Charoen Panyo, Anucha Wannagon, Yothin Chimupala, John T. H. Pearce, Apinon Nuntiya
Summary: Silica aerogel was synthesized from sodium silicate solution extracted from sugarcane bagasse ash by sol-gel processing and solvent exchange. The effects of processing parameters, especially the volumetric ratio of tri-methylchlorosilane (TMCS) to n-Hexane used to modify the surface of the silica aerogel, were studied. Silica aerogel synthesized by sodium silicate solution extracted from sugarcane bagasse ash showed promising properties with a high surface area, pore volume, and pore radius.
Article
Chemistry, Physical
Dilsad Dolunay Eslek Koyuncu, Mujgan Okur
Summary: In this study, paddy waste ash was used to produce carbon-silica hybrid and silica aerogels, with improved pore structure and dye removal performance. The adsorption experiments showed that the dye removal efficiency correlated with the zeta potential curve of the samples, indicating the importance of surface charge.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Multidisciplinary
Mahmood Alhajj, S. K. Ghoshal
Summary: To meet the demand for biomedicines, diverse biocompatible nanomaterials with improved physiochemical characteristics were developed. New types of silver-copper nanocomposites (AgCuNCs) with fluorescence and localized surface plasmon resonance absorption were synthesized using pulse laser ablation in liquid (PLAL) method. The structure, morphology, and fluorescence properties of these nanocomposites were customized by adjusting the laser fluence. The nanocomposite made at a laser fluence of 14.15 +/- 0.4 J cm-2 exhibited uniform particle size distribution and high fluorescence quantum yield, making it suitable for improved fluorescence-based drug formulation in biomedical applications.
Article
Chemistry, Multidisciplinary
Zhuangzhuang Zhou, Yihang Chu, Zhishan Hou, Xiaopeng Zhou, Yu Cao
Summary: Hydrogels and biological cartilage tissues are similar in structure and composition, making hydrogel cartilage an ideal replacement material for artificial articular cartilage. However, accurately regulating the local tribological characteristics of hydrogel artificial cartilage according to patient weight and bone shape is a challenge in medical hydrogel research. This study successfully used ultraviolet lasers to create micro-pits with different shapes on a polyvinyl alcohol hydrogel, improving the surface friction properties. The approach demonstrated in this study provides an important idea for the development of a high-performance, continuous, and accurate method for controlling surface friction properties of artificial cartilage.
Article
Materials Science, Coatings & Films
Chen Wu, Xudong Fang, Qiang Kang, Hao Sun, Libo Zhao, Bian Tian, Ziyan Fang, Maolin Pan, Ryutaro Maeda, Zhuangde Jiang
Summary: This study utilized femtosecond laser to etch SiC and investigated the microscopic mechanism of carrier concentration and temperature change. Results showed that the ablation threshold was related to laser pulse number and processing medium, and a mechanism model based on cleavage phenomenon was established. The processing media significantly affected the surface roughness and chemical bond characteristics of SiC.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
V. Puchy, P. Hvizdos, M. Hrubovcakova, L. Falat, J. Mrazek, M. Vojtko, O. Milkovic, M. Podobova
Summary: The study focuses on preparing silicon carbide (SiC) ceramic material using spark plasma sintering (SPS) technique without any additives. The effects of fiber laser ablation on the SiC surface and subsequent incorporation of graphene nanoplatelets (GNPs) into the microcraters were investigated in terms of their influence on the tribological behavior of SiC-graphene composite surfaces. The results showed that laser treatment created suitable surface morphology for GNPs incorporation, and the incorporation reduced abrasive wear on the composite surfaces.
CERAMICS INTERNATIONAL
(2023)
Editorial Material
Chemistry, Physical
M. Jingliang, K. Wang, P. Murahari, K. Yokoyama, J. S. Lord, F. L. Pratt, J. He, L. Schulz, M. Willis, J. E. Anthony, N. A. Morley, L. Nuccio, A. Misquitta, D. J. Dunstan, K. Shimomura, I. Watanabe, S. Zhang, P. Heathcote, A. J. Drew
Article
Physics, Condensed Matter
A. Bhattacharyya, P. P. Ferreira, K. Panda, S. H. Masunaga, L. R. de Faria, L. E. Correa, F. B. Santos, D. T. Adroja, K. Yokoyama, T. T. Dorini, R. F. Jardim, L. T. F. Eleno, A. J. S. Machado
Summary: In this study, we report for the first time that C-doped Zr5Pt3 is an electron-phonon superconductor with a nonsymmorphic topological Dirac nodal-line semimetal state. The superconducting properties and electronic ground state of Zr5Pt3C0.5 have been investigated experimentally and theoretically.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Correction
Physics, Applied
Jumpei G. Nakamura, Yukinobu Kawakita, Koichiro Shimomura, Takashi Suemasu
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
Y. Ichinohe, S. Yamada, R. Hayakawa, S. Okada, T. Hashimoto, H. Tatsuno, H. Suda, T. Okumura
Summary: Optimal filtering is crucial for achieving state-of-the-art energy resolutions in data analysis of transition-edge-sensor (TES) calorimeters. This study proposes a neural network-based technique for automatic tagging of good TES pulses, which is fast, automatic, and does not require training with bad data.
JOURNAL OF LOW TEMPERATURE PHYSICS
(2022)
Article
Physics, Multidisciplinary
T. Hashimoto, S. Aikawa, T. Akaishi, H. Asano, M. Bazzi, D. A. Bennett, M. Berger, D. Bosnar, A. D. Butt, C. Curceanu, W. B. Doriese, M. S. Durkin, Y. Ezoe, J. W. Fowler, H. Fujioka, J. D. Gard, C. Guaraldo, F. P. Gustafsson, C. Han, R. Hayakawa, R. S. Hayano, T. Hayashi, J. P. Hays-Wehle, G. C. Hilton, T. Hiraiwa, M. Hiromoto, Y. Ichinohe, M. Iio, Y. Iizawa, M. Iliescu, S. Ishimoto, Y. Ishisaki, K. Itahashi, M. Iwasaki, Y. Ma, T. Murakami, R. Nagatomi, T. Nishi, H. Noda, H. Noumi, K. Nunomura, G. C. O'Neil, T. Ohashi, H. Ohnishi, S. Okada, H. Outa, K. Piscicchia, C. D. Reintsema, Y. Sada, F. Sakuma, M. Sato, D. R. Schmidt, A. Scordo, M. Sekimoto, H. Shi, K. Shirotori, D. Sirghi, F. Sirghi, K. Suzuki, D. S. Swetz, A. Takamine, K. Tanida, H. Tatsuno, C. Trippl, J. Uhlig, J. N. Ullom, S. Yamada, T. Yamaga, T. Yamazaki, J. Zmeskal
Summary: We measured the 3d -> 2p transition x rays of kaonic He-3 and He-4 atoms using superconducting transition-edge-sensor microcalorimeters. Our results, which have a higher precision than previous measurements, exclude large strong-interaction shifts and widths suggested by a coupled-channel approach and agree with calculations based on optical-potential models.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Takuma Yamashita, Yasushi Kino, Kenichi Okutsu, Shinji Okada, Motoyasu Sato
Summary: This article introduces a new kinetics model of muon catalyzed fusion, which includes three roles: changing isotopic population, producing epi-thermal muonic atoms, and inducing fusion in-flight. The model reproduces experimental observations under a wide range of conditions in high-temperature gas targets and can be tested through measurements of radiative dissociation X-rays.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Applied
Daikang Yan, Joel C. Weber, Tejas Guruswamy, Kelsey M. Morgan, Galen C. O'Neil, Abigail L. Wessels, Douglas A. Bennett, Christine G. Pappas, John A. Mates, Johnathon D. Gard, Daniel T. Becker, Joseph W. Fowler, Daniel S. Swetz, Daniel R. Schmidt, Joel N. Ullom, Takuma Okumura, Tadaaki Isobe, Toshiyuki Azuma, Shinji Okada, Shinya Yamada, Tadashi Hashimoto, Orlando Quaranta, Antonino Miceli, Lisa M. Gades, Umeshkumar M. Patel, Nancy Paul, Guojie Bian, Paul Indelicato
Summary: In this work, we developed hard X-ray TESs to measure the absolute energies of muonic-argon transition lines around 44 keV and 20 keV. TESs with sidecar absorbers of different heat capacities were fabricated and characterized, achieving high energy resolution and accurate measurements.
JOURNAL OF LOW TEMPERATURE PHYSICS
(2022)
Article
Chemistry, Analytical
Wenshuai Li, Shinya Yamada, Tadashi Hashimoto, Takuma Okumura, Ryota Hayakawa, Kiyofumi Nitta, Oki Sekizawa, Hiroki Suga, Tomoya Uruga, Yuto Ichinohe, Toshiki Sato, Yuichi Toyama, Hirofumi Noda, Tadaaki Isobe, Sayuri Takatori, Takahiro Hiraki, Hideyuki Tatsuno, Nao Kominato, Masaki Ito, Yusuke Sakai, Hajime Omamiuda, Akiko Yamaguchi, Takumi Yomogida, Hikaru Miura, Makoto Nagasawa, Shinji Okada, Yoshio Takahashi
Summary: Accurate determination of Ce valence state is important for (paleo)redox reconstruction, but routine application of Ce L3-edge XANES spectroscopy is often limited by coexisting Ti. This study introduces a semi-quantitative approach using Ce L2-edge XANES spectra and TES to detect weak Ce fluorescence lines in Ti-rich, Ce-dilute geological samples. The results show that Ce L2-edge XANES spectra can provide more reliable information on Ce valence state compared to L3-edge XANES, and TES has higher sensitivity and better energy resolution than SDD for detecting Ce fluorescence X-ray.
ANALYTICA CHIMICA ACTA
(2023)
Article
Physics, Multidisciplinary
T. Okumura, T. Azuma, D. A. Bennett, I. Chiu, W. B. Doriese, M. S. Durkin, J. W. Fowler, J. D. Gard, T. Hashimoto, R. Hayakawa, G. C. Hilton, Y. Ichinohe, P. Indelicato, T. Isobe, S. Kanda, M. Katsuragawa, N. Kawamura, Y. Kino, K. Mine, Y. Miyake, K. M. Morgan, K. Ninomiya, H. Noda, G. C. O'Neil, S. Okada, K. Okutsu, N. Paul, C. D. Reintsema, D. R. Schmidt, K. Shimomura, P. Strasser, H. Suda, D. S. Swetz, T. Takahashi, S. Takeda, S. Takeshita, M. Tampo, H. Tatsuno, Y. Ueno, J. N. Ullom, S. Watanabe, S. Yamada
Summary: We performed high precision x-ray spectroscopy of the 5g-4f and 5f- 4d transitions of muonic neon atoms to test bound-state quantum electrodynamics in the strong-field regime. Using superconducting transition-edge sensor microcalorimeters, we determined the 5g9/2-4f7/2 transition energy to be 6297.08 +/- 0.04(stat) +/- 0.13(syst) eV, which agrees well with the most advanced BSQED theoretical prediction of 6297.26 eV.
PHYSICAL REVIEW LETTERS
(2023)
Article
Nuclear Science & Technology
A. Iiyoshi, N. Kobayashi, T. Mutoh, S. Nakatani, S. Okada, M. Sato, H. Takano, Y. Tanahashi, N. Yamamoto, A. Fujita, Y. Kino
Summary: Until the pure fusion ages come true, present nuclear power is a crucial option if humanity takes aim for a zero net carbon society by the 2050s. A thorium subcritical reactor activated and controlled by muon-catalyzed fusion (MuCF) is an alternative until the completion of the pure fusion reactors. This proposal consists of two main technologies: a steady-state MuCF and the thorium subcritical fission reactor with cascaded neutron multipliers. It will be an environmentally friendly quantum energy source built only by the present science and technologies in a few decades.
FUSION SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Ken-ichi Sasaki, Mitsushi Abe, Hiromi Iinuma, Tsutomu Mibe, Shun Oyama, Naohito Saito, Ryuya Ando, Tomoo Chiba, Tomoyuki Koga
Summary: This paper presents the current design of a superconducting solenoid system at the J-PARC, which is used for storing a muon beam of 0.3 GeV/c. The design aims to achieve a high homogeneous magnetic field within the muon storage region and carefully control the magnetic field distribution where the muon beam passes through. The system includes NbTi superconducting coils surrounded by an iron yoke and utilizes liquid helium cooling and GM cryocoolers for maintaining the required temperature.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Electrical & Electronic
S. Oyama, M. Abe, H. Iinuma, T. Mibe, K. Sasaki, N. Saito
Summary: The J-PARC Muon g-2/EDM Experiment utilizes a superconducting solenoid magnet to store positive muons, generating a magnetic field of 3 T. A highly uniform magnetic field, with an error of less than 0.2 ppm(p-p), is required in the muon storage region. The magnetic field error caused by manufacturing tolerance was evaluated using a Monte Carlo simulation.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Electrical & Electronic
Ken-ichi Sasaki, Mitsushi Abe, Tsutomu Mibe, Naohito Saito, Ryuya Ando, Tomoo Chiba, Tomoyuki Koga
Summary: A study was conducted on the sources of magnetic field disturbance in a superconducting solenoid for the J-PARC g - 2/EDM experiment. Seismic vibration and GM cryocoolers were identified as the main sources of vibration. The analysis showed that the displacement of the main coil due to seismic vibration would be about 0.69 and 0.43 mu m in the horizontal and vertical directions, respectively. The coil vibration caused by GM cryocoolers was negligible. The magnetic field error due to coil displacement was evaluated to be +/- 0.043 and +/- 0.008 ppm in the horizontal and vertical directions, respectively.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Nanoscience & Nanotechnology
Jack A. Doolan, Luke S. Alesbrook, Karen Baker, Ian R. Brown, George T. Williams, Kira L. F. Hilton, Makoto Tabata, Penelope J. Wozniakiewicz, Jennifer R. Hiscock, Benjamin T. Goult
Summary: An engineered version of the mechanosensitive protein talin was used to create a hydrogel that can capture and preserve projectiles. This material overcomes limitations in current industry standards and is capable of absorbing high-speed impacts.
NATURE NANOTECHNOLOGY
(2023)
Article
Optics
X. M. Tong, D. Kato, T. Okumura, S. Okada, T. Azuma
Summary: We have developed a method using relativistic density-functional theory with a self-interaction correction that is simple, fast, and reasonably accurate. Comparisons with measured Kα lines and their hypersatellites for different atoms revealed that the relativistic local density approximation is suitable for Kα lines, while the relativistic local spin density approximation with a self-interaction correction is better for Khα hypersatellites. The relativistic effect was found to be significant, even for middle-Z atoms like Cu, with a difference of about 100 eV compared to nonrelativistic density-functional theory. The paper also discusses the screening effects and conduction band from inner shell to outer shell. Overall, the present paper provides a comprehensive understanding of the transition lines of muonic atoms and their implications for experimental measurements.
