Article
Multidisciplinary Sciences
K. Taghizadeh, M. Ruf, S. Luding, H. Steeb
Summary: This research focuses on performing ultrasound propagation measurements and micro-X-ray computed tomography imaging on prestressed granular packings prepared with biphasic mixtures of monodisperse glass and rubber particles at different compositions/fractions. The study reveals that the effective macroscopic stiffness of the granular packings transits nonlinearly and nonmonotonically toward the soft limit as the fraction of soft particles increases. The contact network of dense packings plays a key role in understanding this phenomenon.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Robotics
Luc Marechal, Pascale Balland, Lukas Lindenroth, Fotis Petrou, Christos Kontovounisios, Fernando Bello
Summary: The study highlights the importance of a unified database of material constitutive models for soft robotics, providing experimental characterizations and mechanical properties for seventeen elastomers. This database aids in designing and modeling soft robots, as well as serving as a foundation for future material characterizations in the field of soft robotics research.
Article
Engineering, Biomedical
John S. Kang, Kishev Navindaran, J. Phillips, K. Kenny, Kee S. Moon
Summary: This paper presents a tensile testing technique to directly and accurately measure the mechanical properties of soft tissues. To solve the challenges in tensile testing on soft tissues, a sub-micro scale tensile testing system was designed, which uses a flexure mechanism and a 3D-printed sample holder for gripping the tissue samples, and two high-resolution cameras to measure the cross-section area and strain of the samples. The system was validated through tests on standard materials and lung tissue slices, showing low error and high repeatability.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Biophysics
Mark D. Olchanyi, Amir Sadikov, Jennifer Frattolin, Sumesh Sasidharan, M. Yousuf Salmasi, Lowell T. Edgar, Omar Jarral, Thanos Athanasiou, James E. Moore
Summary: The study presents the validation of a modified Demons registration algorithm for non-contact, marker-less strain measurement of tissues. Results indicate that Demons outperforms other methods in terms of accuracy and robustness, showing potential for the quantitative assessment of soft tissue pathologies.
JOURNAL OF BIOMECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Jose David Arregui-Mena, David A. Cullen, Robert N. Worth, Singanallur V. Venkatakrishnan, Matthew S. L. Jordan, Michael Ward, Chad M. Parish, Nidia Gallego, Yutai Katoh, Philip D. Edmondson, Nassia Tzelepi
Summary: Porosity can heavily influence the properties of nuclear-grade graphite, and electron tomography is able to visualize the sub-micron pores in three dimensions. This research demonstrates the 3D structure of both native and irradiation-induced nano-cracks in graphite, as well as the unique characteristics of graphite such as pore structure. The technique could also be useful for molecular dynamic simulations and experimental techniques related to irradiated graphite and other nuclear porous carbon-based materials.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Yen Chuang, Chia-You Liu, Guang-Li Luo, Jiun-Yun Li
Summary: This study demonstrates a record high electron mobility in a tensile-strained Ge0.96Sn0.04 nMOSFET, achieved through high-quality GeSn films and different strain conditions. The use of a mesa FET structure effectively reduces OFF leakage while boosting the I-ON/I-OFF ratio significantly compared to conventional planar devices. As the GeSn film becomes more tensile strained, channel mobility is enhanced, potentially due to a higher carrier population in the Gamma valley.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Physical
Yi Feng, Zhe Li, Chuan-Qi Cheng, Wen-Jing Kang, Jing Mao, Gu-Rong Shen, Jing Yang, Cun-Ku Dong, Hui Liu, Xi-Wen Du
Summary: The research utilized a laser ablation technique to prepare a strawberry-like catalyst embedded with Co3O4 and Ag cluster, effectively promoting water electrolysis process, reducing overpotential, and enhancing the performance of hydrogen evolution and oxygen evolution.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Materials Science, Multidisciplinary
Kun Liu, Yangyang Li, Qi Liu, Dian Song, Xiaolong Xie, Yunrui Duan, Yifei Wang, Jie Li
Summary: Theoretical study has been conducted on the effect of tensile strain on electron transport in ultra-thin SiC nanowires (NWs) with different diameters. The results reveal that these NWs exhibit distinctive stress-strain curves with multistage fluctuations and the tension greatly affects electron transport. The strongest transmission occurs when the wire is stretched to the near-emergence of the monatomic chain in the necking place, especially for thicker SiC NWs, due to localized transmission eigenstates and pathways. This work provides an approach to enhance electron transport and support applications of nanoelectronics and nano-piezoelectric devices using ultra-thin SiC NWs.
Article
Materials Science, Multidisciplinary
Zhendong Zhu, Jiangtao Di, Xiangyang Liu, Jiaqiang Qin, Pei Cheng
Summary: Coiled polymer fibers are promising materials for powerful artificial muscles and have great potential in refrigerators and sensors. This article discusses the advantages and applications of coiled polymer fibers, and proposes future research directions.
Article
Multidisciplinary Sciences
Lizhong Dong, Ming Ren, Yulian Wang, Guanghua Wang, Shiqin Zhang, Xulin Wei, Jianfeng He, Bo Cui, Yueran Zhao, Panpan Xu, Xiaona Wang, Jiangtao Di, Qingwen Li
Summary: This study reports an artificial neuromuscular fiber that integrates sensing and actuation capabilities, similar to a snail tentacle. By using a combination of carbon nanotube fiber core, elastomer layer, nanofiber network, and MXene/CNT thin sheath, this intelligent fiber achieves sensitive touch/stretch perception and hysteresis-free cyclic actuation tracing.
Article
Chemistry, Multidisciplinary
Andreas Leber, Stella Laperrousaz, Yunpeng Qu, Chaoqun Dong, Ines Richard, Fabien Sorin
Summary: Stretchable and conductive nanocomposites are used in soft mechanical sensors for health monitoring, human-machine interactions, and soft robotics. In this study, thermoplastic elastomer-based nanocomposites are engineered to be compatible with fiber processing technologies, resulting in long and versatile stretchable fiber devices. The resistivity of the nanocomposite is tailored by microstructural changes in the nanofiller arrangement, and the sensitivity to strain is adjusted through thermal drawing processing parameters. Various fiber-based sensors are proposed for monitoring bending, pressure, and strain.
Article
Multidisciplinary Sciences
Han-dong Liu, Jing-jing Liu, Shi-ying Zhang, Ling-yun Feng, Lei Qiu
Summary: This study investigated the influence of fracture angles and connectivity on the deformation and failure of soft rock-like material through uniaxial compression tests and acoustic emission measurements. The differences between fractured and intact material were mainly observed during post-peak failure stage, and the fracture angle and connectivity affected the uniaxial compressive strength of fractured soft rock-like material.
SCIENTIFIC REPORTS
(2022)
Article
Materials Science, Multidisciplinary
Poonam Shekhawat, Gunwant Sharma, Rao Martand Singh
Summary: The morphological and microstructural evolution of flyash (FA), eggshell powder (ESP), and soft soil (S) geo-polymer was studied. The effects of different synthesis parameters on the geopolymerization process were explained. The results showed the coexistence of calcium aluminate silicate hydrate gel and the highest cementitious product. The geopolymeric gel structure filled the voids between soft soil particles and reinforced the whole matrix.
Article
Chemistry, Multidisciplinary
Tingting Ye, Jiacheng Wang, Yiding Jiao, Luhe Li, Er He, Lie Wang, Yiran Li, Yanjing Yun, Dan Li, Jiang Lu, Hao Chen, Qianming Li, Fangyan Li, Rui Gao, Huisheng Peng, Ye Zhang
Summary: The study introduces the first ultrasoft batteries based on hydrogels, which exhibit Young's moduli perfectly matching skin and organs like the heart. These batteries achieve high specific capacities in different types of all-hydrogel batteries and demonstrate high stability and biocompatibility for wearable and implantable applications. They provide a pathway for designing power sources with matched mechanical properties for wearable and implantable electronics.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ruth M. Birch, James O. Douglas, Ben Britton
Summary: Zircaloy-4 is a fuel cladding material for water reactors, characterized by good mechanical properties, corrosion resistance, and low thermal neutron absorption cross section. However, the presence of hydrides in Zircaloy-4 can reduce its mechanical performance. This study used cryo-ion beam polishing and electron backscatter diffraction analysis to investigate the morphology, deformation fields, and orientation relationships between the hydrides and the zirconium matrix. The results revealed the strong link between the incompatibility of hydrides within the matrix and the orientation relationship and grain boundary character.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Naoya Aoki, Hideo Inoue, Takashi Okawa, Yuta Ikehata, Akira Shirai, Hideo Daimon, Takayuki Doi, Yuki Orikasa, Yoshiharu Uchimoto, Hiroshi Jinnai, Shin Inamoto, Yuji Otsuka, Minoru Inaba
Article
Polymer Science
Chih-Hsuan Lin, Takeshi Higuchi, Hsin-Lung Chen, Jing-Cherng Tsai, Hiroshi Jinnai, Takeji Hashimoto
Review
Polymer Science
Hiroshi Jinnai
Article
Chemistry, Physical
Ishan Prasad, Hiroshi Jinnai, Rong-Ming Ho, Edwin L. Thomas, Gregory M. Grason
Article
Polymer Science
Hiroki Murase, Hiroshi Jinnai, Takaaki Toriyama, Takeji Hashimoto
Article
Polymer Science
Shichen Yu, Ziwei Lai, Hiroshi Jinnai, Xingming Zeng, Masaki Ageishi, Bernard Lotz, Stephen Z. D. Cheng, Nan Zheng, Shuailin Zhang, Xueyan Feng, Yan Cao
Article
Polymer Science
Youngkeol Kim, Akemi Kumagai, Xiejun Hu, An-Chang Shi, Baohui Li, Hiroshi Jinnai, Kookheon Char
Article
Polymer Science
Katsunori Shimizu, Tomohiro Miyata, Tomohiko Nagao, Akemi Kumagai, Hiroshi Jinnai
Article
Materials Science, Composites
Toru Noguchi, Morinobu Endo, Kenichi Niihara, Hiroshi Jinnai, Akira Isogai
COMPOSITES SCIENCE AND TECHNOLOGY
(2020)
Article
Engineering, Multidisciplinary
Jiaying Gao, Modesar Shakoor, Hiroshi Jinnai, Hiroshi Kadowaki, Eisuke Seta, Wing Kam Liu
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
Ziwei Lai, Shuailin Zhang, Nan Zheng, Shichen Yu, Masaki Ageishi, Hiroshi Jinnai, Yan Cao
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2020)
Meeting Abstract
Geochemistry & Geophysics
H. Jinnai
METEORITICS & PLANETARY SCIENCE
(2019)
Article
Chemistry, Physical
Katsumi Hagita, Keizo Akutagawa, Tetsuo Tominaga, Hiroshi Jinnai
Meeting Abstract
Chemistry, Multidisciplinary
Hiroshi Jinnai
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Meeting Abstract
Chemistry, Multidisciplinary
Hiroshi Jinnai
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)