Article
Physics, Applied
Ayaka Kanno, Takahisa Moriwaki, Hiroshi Yamauchi, Takashi Tadokoro
Summary: Organic electronic devices are gaining attention for their ability to be processed into thin films easily using electrospray deposition (ESD) method. This study introduces a new direct-patterning ESD method where an electric field is applied between a syringe needle and a patterned counter electrode. The method successfully forms patterned organic semiconductor films on flexible insulator substrates and allows control over the width of the patterned films by adjusting the applied electric field.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Review
Chemistry, Analytical
Seokwon Joo, Jung Yeon Han, Soonmin Seo, Ju-Hyung Kim
Summary: Rapid technological advancements have increased the demand for sensors, requiring high-performance capabilities for next-generation technology. Various materials and patterning methods are used in sensor fabrication to meet the wide range of sensing applications. In this paper, we review the patterning techniques used in recently reported sensors, particularly the widely used capacitive sensors, and discuss their impact on sensor performance. Additionally, we introduce a method for enhancing sensor performance through three-dimensional (3D) structures.
Article
Materials Science, Multidisciplinary
S. Shafqat, J. P. M. Hoefnagels
Summary: This study presents a technique for nano-patterning highly delicate specimens for high-resolution DIC, using a controlled nebulized micro-mist containing single nanoparticles per droplet. The method successfully avoids the challenges of controlling nanoparticle interactions during the drying process, leading to high-quality patterns on physically and chemically sensitive specimens. The approach allows for convenient patterning of delicate samples at near-room temperature, without exposure to harsh processing steps.
EXPERIMENTAL MECHANICS
(2021)
Article
Toxicology
Christian Monse, Monika Raulf, Birger Jettkant, Vera van Kampen, Benjamin Kendzia, Leonie Schuermeyer, Christoph Edzard Seifert, Eike-Maximilian Marek, Goetz Westphal, Nina Rosenkranz, Rolf Merget, Thomas Bruening, Juergen Buenger
Summary: The study investigated the health effects of inhalation of different sizes of ZnO particles. Results showed that nano-sized and micro-sized particles didn't differ significantly in their impact on systemic inflammatory responses. The higher deposition efficiency of micro-sized particles in the respiratory tract led to stronger inflammatory reactions.
ARCHIVES OF TOXICOLOGY
(2021)
Article
Chemistry, Multidisciplinary
James G. Radney, Jamie L. Weaver, Edward P. Vicenzi, Matthew E. Staymates, Christopher D. Zangmeister
Summary: The study found that adding materials with high filtration efficiency to face masks can provide additional personal protection, but there is a trade-off balancing increased filtration efficiency and breathability. The filtration efficiency and breath resistance of the composite covering increase with the increase of insert area ratio, and the quality factor of the insert interacts with the quality factor of the fabric.
Review
Chemistry, Multidisciplinary
Wei Wang, Ping-Fan Li, Rui Xie, Xiao-Jie Ju, Zhuang Liu, Liang-Yin Chu
Summary: Smart polymeric materials that can respond to environmental stimuli and dynamically adjust their physico-chemical characteristics have gained significant attention in various fields. The combination of micro-/nano-structures and molecular design offers promising opportunities for the development of advanced smart polymeric materials. This review highlights recent progress in the design and fabrication of smart polymeric materials that incorporate micro-/nano-structures and molecular design to achieve desired functions. Various examples, including smart hydrogels, gating membranes, gratings, milli-particles, micro-particles, and microvalves, are discussed, emphasizing the interplay between their micro-/nano-structures and responsive properties for practical applications. The review concludes with perspectives on the current challenges and future opportunities in the development of micro-/nano-structured smart polymeric materials.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mingming Cui, Hu Huang, Lin Zhang, Jiwang Yan
Summary: In this study, a new nanosecond laser pulling method is proposed to fabricate micro-nano structures on metallic glasses. The formation mechanism and evolution of the micro-nano bulge are investigated, and various micro-nano structures are successfully created on the MG surface, affecting the surface optical diffraction. Overall, this study provides a highly flexible and controllable method for the fabrication of micro-nano structures on MGs.
Article
Engineering, Environmental
Yi Xie, Jihai Zhang, Haoran Xu, Tao Zhou
Summary: This study presents a facile approach to fabricating all-solid-state 3D MSCs devices using laser-engraved nickel foams as inter-digitated current collectors and electrode-positioning pseudocapacitive materials. The hybrid AMSC (Ni foam-MnO2//Ni foam-PPy) exhibits a large areal capacitance, excellent capacity retention, and high energy/power density.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Optics
Bing Dong, Zongwei Xu, Changkun Shi, Kun Zhang, Yuheng Zhang, Rushuai Hua, Wei Zhao, Jianshi Wang
Summary: In this study, a method for fabricating high-quality micro-nanostructures of 4H-SiC using vector polarized light was proposed. The influences of linear polarization and vector polarization on the quality and surface morphology of processed SiC microgrooves were studied. The study showed that using vector beam, especially azimuthal polarization beam, can ensure the uniformity of the processing area, reduce micro-cracks and obtain better processing quality.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Hongru Ding, Zhihan Chen, Carolina Ponce, Yuebing Zheng
Summary: Due to their contactless and fuel-free operation, optical rotation techniques have great potential in various fields such as cellular biology, 3D imaging, and micro/nanorobotics. However, the complexity of optics, high power requirements, and limitations in object applicability hinder their broader use. This Feature Article focuses on a new class of optical rotation techniques called optothermal rotation, which utilizes light-mediated thermal phenomena to enable versatile and simpler rotary control of objects with lower power. The article provides an overview of the fundamental thermal phenomena and concepts involved in optothermal rotation and categorizes the techniques based on their rotation modes and thermal phenomena. The potential applications of optothermal manipulation techniques in areas like single-cell mechanics, 3D bio-imaging, and micro/nanomotors are also discussed, along with insights on operating guidelines, challenges, and future directions.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Manufacturing
Hui Xue, Yongfeng Liang, Hui Peng, Yanli Wang, Junpin Lin
Summary: Additive manufacturing is an effective method for constructing complex components. A study has successfully synthesized a composite material with uniform microstructure and no cracks. The material exhibits excellent mechanical properties and is suitable for producing isotropic components.
ADDITIVE MANUFACTURING
(2022)
Article
Nanoscience & Nanotechnology
Donghyo Hahm, Jaemin Lim, Hyeokjun Kim, Jin-Wook Shin, Sungkwon Hwang, Seunghyun Rhee, Jun Hyuk Chang, Jeehye Yang, Chang Hyeok Lim, Hyunwoo Jo, Beomgyu Choi, Nam Sung Cho, Young-Shin Park, Doh C. Lee, Euyheon Hwang, Seungjun Chung, Chan-Mo Kang, Moon Sung Kang, Wan Ki Bae
Summary: A dual-ligand passivation system enables quantum dots to be universally compatible with solution-based patterning techniques, allowing for the integration of luminescent quantum dot films into photonic devices. This approach offers high resolution, non-destructive patterning, and cost-effectiveness, and can be applied to various commercial photonics applications.
NATURE NANOTECHNOLOGY
(2022)
Article
Engineering, Environmental
Nima Kamali, Abdollah Rashidi Mehrabadi, Maryam Mirabi, Mohammad Ali Zahed
Summary: The study demonstrates that the use of Nano-MgO functionalized biochar can effectively remove phosphate from water. Experimental results show that under optimized conditions, this modified biochar exhibits high phosphate adsorption capacity, and performs well in thermodynamic, isotherm, and kinetic studies.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Physical
Esmail Sharifzadeh, Mehran Parsnasab
Summary: This study synthesized hollow graphene oxide Janus (HGOJ) micro/nano-particles using direct and reverse desymmetrization processes. Different sizes of hollow graphene oxide particles were produced, and the Janus characteristics were tailored onto the surface of micro/nano stabilizing particles through a surface modification process in O/W Pickering emulsions.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Multidisciplinary
Chen Zhang, Xiao Wang, Meng Xiao, Jiaqi Ma, Yan Qu, Liang Zou, Jinming Zhang
Summary: A novel oral nano-in-micro system was developed for efficient colonic delivery of curcumin (Cur). The system consisted of hyaluronic acid (HA)/zein complex nanoparticles (NPs) loaded with Cur, embedded in alginate/chitosan hydrogel microparticles (Cur@NMPs). The system showed sustained drug release and bio-adhesiveness, and significantly alleviated colitis symptoms.
MATERIALS & DESIGN
(2022)
Article
Pharmacology & Pharmacy
Libo Wu, Pranav Shrestha, Martina Iapichino, Yicheng Cai, Beomjoon Kim, Boris Stoeber
Summary: Microneedles are designed to penetrate the stratum corneum and deliver drugs to the epidermis and dermis layers of the skin, reducing the pain of drug administration. Studying the diffusion process of drug release from different types of microneedles into the skin tissue helps understand the transdermal drug delivery mechanism mediated by microneedles.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Instruments & Instrumentation
Baolong Ma, Makoto Teshigawara, Yasuo Wakabayashi, Mingfei Yan, Takao Hashiguchi, Yutaka Yamagata, Sheng Wang, Yujiro Ikeda, Yoshie Otake
Summary: The optimization of the cold neutron moderator at RIKEN's compact neutron source has significantly increased the cold neutron intensity, demonstrating the potential application prospects of mesitylene as a moderator material.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2021)
Article
Physics, Nuclear
A. Addazi, K. Anderson, S. Ansell, K. S. Babu, J. L. Barrow, D. Baxter, P. M. Bentley, Z. Berezhiani, R. Bevilacqua, R. Biondi, C. Bohm, G. Brooijmans, L. J. Broussard, J. Cedercall, C. Crawford, P. S. B. Dev, D. D. DiJulio, A. D. Dolgov, K. Dunne, P. Fierlinger, M. R. Fitzsimmons, A. Fomin, M. J. Frost, S. Gardiner, S. Gardner, A. Galindo-Uribarri, P. Geltenbort, S. Girmohanta, P. Golubev, E. Golubeva, G. L. Greene, T. Greenshaw, V Gudkov, R. Hall-Wilton, L. Heilbronn, J. Herrero-Garcia, A. Holley, G. Ichikawa, T. M. Ito, E. Iverson, T. Johansson, L. Jonsson, Y-J Jwa, Y. Kamyshkov, K. Kanaki, E. Kearns, Z. Kokai, B. Kerbikov, M. Kitaguchi, T. Kittelmann, E. Klinkby, A. Kobakhidze, L. W. Koerner, B. Kopeliovich, A. Kozela, V Kudryavtsev, A. Kupsc, Y. T. Lee, M. Lindroos, J. Makkinje, J. Marquez, B. Meirose, T. M. Miller, D. Milstead, R. N. Mohapatra, T. Morishima, G. Muhrer, H. P. Mumm, K. Nagamoto, A. Nepomuceno, F. Nesti, V. V. Nesvizhevsky, T. Nilsson, A. Oskarsson, E. Paryev, R. W. Pattie, S. Penttil, H. Perrey, Y. N. Pokotilovski, I Potashnikovav, K. Ramic, C. Redding, J-M Richard, D. Ries, E. Rinaldi, N. Rizzi, N. Rossi, A. Ruggles, B. Rybolt, V Santoro, U. Sarkar, A. Saunders, G. Senjanovic, A. P. Serebrov, H. M. Shimizu, R. Shrock, S. Silverstein, D. Silvermyr, W. M. Snow, A. Takibayev, I Tkachev, L. Townsend, A. Tureanu, L. Varriano, A. Vainshtein, J. de Vries, R. Wagner, R. Woracek, Y. Yamagata, S. Yiu, A. R. Young, L. Zanini, Z. Zhang, O. Zimmer
Summary: The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source to search for baryon number violation, aiming to discover and characterize mixing in the neutron, antineutron, and sterile neutron sectors. This experiment addresses open questions related to baryogenesis, dark matter, and new physics scales, and has the potential to significantly increase sensitivity in neutron conversion probability tests.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2021)
Article
Multidisciplinary Sciences
Benjamin Heacock, Takuhiro Fujiie, Robert W. Haun, Albert Henins, Katsuya Hirota, Takuya Hosobata, Michael G. Huber, Masaaki Kitaguchi, Dmitry A. Pushin, Hirohiko Shimizu, Masahiro Takeda, Robert Valdillez, Yutaka Yamagata, Albert R. Young
Summary: This study utilized neutron interferometry to measure the structure factors of silicon, improving the precision of measurements for the Debye-Waller factor and neutron charge radius. Additionally, the measured structure factors significantly enhance constraints on the strength of a Yukawa modification to gravity.
Article
Multidisciplinary Sciences
Hiroyoshi Aoki, Yuki Masahiro, Michiru Shimizu, Yuichi Hongoh, Moriya Ohkuma, Yutaka Yamagata
Summary: A novel type of agarose gel microcapsule (AGM) has been developed to obtain high-quality, single-cell, amplified bacterial genomic DNA. The method is easy to prepare and does not require specialized equipment, allowing for easy and effective single-cell genomics and accelerated genomic analysis of yet-uncultured microorganisms.
SCIENTIFIC REPORTS
(2022)
Article
Nuclear Science & Technology
Yujiro Ikeda, Makoto Teshigawara, Mingfei Yan, Chihiro Iwamoto, Kunihiro Fujita, Yutaka Abe, Yasuo Wakabayashi, Atsushi Taketani, Takaoki Takanashi, M. Harada, Takao Hashiguchi, Yutaka Yamagata, Yoshio Matsuzaki, Baolong Ma, Masato Takamura, Maki Mizuta, Makoto Goto, Shota Ikeda, Tomohiro Kobayashi, Yoshie Otake
Summary: Researchers aim to enhance the performance of RANS by installing a cold neutron source, which may bring new opportunities for various applications. They conducted experiments using cryogenic mesitylene as the moderator to measure the neutron spectra, and evaluated the performance of the cold moderator.
JOURNAL OF NEUTRON RESEARCH
(2022)
Article
Physics, Multidisciplinary
Shoki Iwaguchi, Atsushi Nishizawa, Yanbei Chen, Yuki Kawasaki, Tomohiro Ishikawa, Masaaki Kitaguchi, Yutaka Yamagata, Bin Wu, Ryuma Shimizu, Kurumi Umemura, Kenji Tsuji, Hirohiko Shimizu, Yuta Michimura, Seiji Kawamura
Summary: To detect gravitational waves more effectively, it is important to develop a technique for reducing mirror displacement noise in ground-based detectors at low frequencies. The neutron displacement-noise-free interferometer (DFI) is a tool that can minimize mirror displacement noise in the lower frequency range. This paper presents a simplified configuration of the neutron DFI based on the direction of neutron incidence. Unlike the previous configuration, which involved bidirectional incidences at two speeds, the new configuration allows unidirectional neutron incidence at four speeds. This simplification is crucial for proof-of-principle experiments.
Proceedings Paper
Engineering, Aerospace
S. Utsunomiya, T. Ozaki, M. Ide, Y. Yamagata, H. Saito, K. Kageyama
Summary: This study investigated the technology to manufacture main reflectors of satellite-mounted telescopes using Carbon Fiber Reinforced Plastics (CFRP). By improving the replica technology and process conditions, the fiber print-through issue on the CFRP surface was eliminated and high shape accuracy of the mirrors was achieved. The lightweight and thermally stable CFRP mirrors are expected to enhance the resolution of space telescopes.
SPACE TELESCOPES AND INSTRUMENTATION 2022: OPTICAL, INFRARED, AND MILLIMETER WAVE
(2022)
Proceedings Paper
Engineering, Mechanical
Masahiro Takeda, Kousuke Kushibiki, Takuya Hosobata, Yutaka Yamagata, Shinya Morita, Takao Saiki, Keiichi Nakagawa, Yutaka Ohtake, Kentaro Motohara, Shinobu Ozaki, Toshihiro Tsuzuki, Hidenori Takahashi, Masahiro Konishi
Summary: A two-in-one optical element consisting of a planar pick-off mirror and a slice mirror array was developed and controlled using advanced machining and measurement techniques. The study demonstrates the practical value of these methods for developing complex monolithic optics in the future.
ADVANCES IN OPTICAL AND MECHANICAL TECHNOLOGIES FOR TELESCOPES AND INSTRUMENTATION V
(2022)
Proceedings Paper
Engineering, Mechanical
Kosuke Kushibiki, Shinobu Ozaki, Masahiro Takeda, Takuya Hosobata, Yutaka Yamagata, Shinya Morita, Keiichi Nakagawa, Takao Saiki, Yutaka Ohtake, Toshihiro Tsuzuki, Kenji Mitsui, Hirofumi Okita, Kentaro Motohara, Hidenori Takahashi, Masahiro Konishi, Natsuko Kato, Shuhei Koyama, Nuo Chen, Shogo Homan, Akino Yasuda
Summary: SWIMS-IFU is the first generation near-infrared spectrograph for the TAO 6.5 m telescope. It achieves a larger field of view and more efficient observations by matching the slice width and using ultra-precision cutting for alignment.
ADVANCES IN OPTICAL AND MECHANICAL TECHNOLOGIES FOR TELESCOPES AND INSTRUMENTATION V
(2022)
Article
Cell Biology
Ryosuke Nishimura, Kagayaki Kato, Misako Saida, Yasuhiro Kamei, Masahiro Takeda, Hiromi Miyoshi, Yutaka Yamagata, Yu Amano, Shigenobu Yonemura
Summary: This study demonstrates the importance of tension sensitivity of a-catenin in epithelial morphogenesis. By using a novel in vitro suspension culture model, the researchers found that epithelial cells can form round spheroids even without high tension. Increased tension sensitivity of a-catenin affected this morphogenesis. Analyses of adherens junction formation and cellular tracking during rounding morphogenesis revealed cellular rearrangement, which occurs at the cell mass level and is crucial for coordinated round morphogenesis.
CELL STRUCTURE AND FUNCTION
(2022)
Article
Engineering, Manufacturing
Hao Duan, Shinya Morita, Takuya Hosobata, Masahiro Takeda, Yutaka Yamagata
Summary: In this study, the compensation of motion errors of an ultra-precision machine tool using the OMM system was utilized to improve the quality of machining precision optics with aspherical or free-form optical surfaces. Through experiments with feed-forward motion error compensation, the peak-to-valley profile error was reduced from 125.3 nm to 42.1 nm.
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING
(2021)
Article
Automation & Control Systems
Hao Duan, Shinya Morita, Takuya Hosobata, Masahiro Takeda, Yutaka Yamagata
Summary: The study introduces a new OMM system with a confocal chromatic probe on a five-axis ultrahigh precision machine tool for profile measurement. The system has a precision of around +/- 10 nm, deteriorating at slope angles of +/- 45 degrees but estimated to be within +/- 100 nm at angles within +/- 15 degrees.
INTERNATIONAL JOURNAL OF AUTOMATION TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Meng Su, Beomjoon Kim
ACS APPLIED NANO MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Gwenael Bonfante, Hakjae Lee, Leilei Bao, Jongho Park, Nobuyuki Takama, Beomjoon Kim
MICRO AND NANO SYSTEMS LETTERS
(2020)