Lin, Shihui; Ye, Chao; Zhang, Wenwen; Xu, Anchang; Chen, Shixian; Ren, Jing; Ling, Shengjie
Nanofibril Organization in Silk Fiber as Inspiration for Ductile and Damage-Tolerant Fiber Design
Ductile and damage-tolerant fibers (DDTFs) are desired in aerospace engineering, mechanical engineering, and biomedical engineering because of their ability to prevent the catastrophic sudden structural/mechanical failure. However, in practice, design and fabrication of DDTFs remain a major challenge due to finite fiber size and limited processing techniques. In this regard,…
Tubular Sensor with Multi-Axial Strain Sensibility and Heating Capability Based on Bio-Mimic Helical Networks
Li, Yijun; Zhang, Kailin; Nie, Min; Wang, Qi
Sensors are crucial in industrial robotics and smart production line owing to the basic needs for humanmachine communication and real-time monitoring. However, a lack of versatile sensing capability and multifunctionalities are still two urgent bottlenecks for current sensors to break through. In this study, from the biomimic perspective, helical and…
An in situ SAXS investigation of the formation of silver nanoparticles and bimetallic silvergold nanoparticles in controlled wet-chemical reduction synthesis
F. Garcia, Paulo R. A.; Prymak, Oleg; Grasmik, Viktoria; Pappert, Kevin; Wlysses, Wagner; Otubo, Larissa; Epple, Matthias; P. Oliveira, Cristiano L.
We present a study on the formation of silver (Ag) and bimetallic silvergold (AgAu) nanoparticlesmonitored by in situ SAXS as well as by ex situ TEM, XRD and UV-vis analysis in a flow reactor at controlled reaction temperature. The formation mechanism of the nanoparticles is derived from the structural parameters…
Facile Route for the Fabrication of Polypropylene Separators for Lithium-Ion Batteries with High Elongation and Strong Puncture Resistance
Kang, Jian; Chen, Dandan; Xiong, Bijin; Zheng, Nan; Yang, Feng; Xiang, Ming; Zheng, Zhuo
A facile route for fabrication of polypropylene separators for lithium-ion batteries with high elongation and strong puncture resistance has been proposed in this work. Polypropylene separators immersed in paraffin wax have been prepared to introduce small molecules into separators. The influence of small molecules on mechanical properties of separators is…
Biomimetic Mineralized OrganicInorganic Hybrid Macrofiber with Spider Silk-Like Supertoughness
Yu, Yadong; He, Yan; Mu, Zhao; Zhao, Yueqi; Kong, Kangren; Liu, Zhaoming; Tang, Ruikang
Spider silk fibers (SSF) have a hierarchical structure composed of proteins with highly repetitive sequences and biomineralization is sophisticated in hierarchical organicinorganic constructions. By using inorganic hydroxyapatite (HAP) and organic polyvinyl alcohol (PVA) to simulate the rigid crystalline and flexible amorphous protein blocks of SSF, respectively, biomimetic mineralization is
Time resolved alkali silicate decondensation by sodium hydroxide solution
Dupuis, Romain; Rodrigues, Donatien Gomes; Champenois, Jean-Baptiste; Pellenq, Roland; Poulesquen, Arnaud
Silica is by far the chemical compound the most widespread and used around the world: as a raw product in the buildings and roads industry, as concrete, or as a processed product in the manufacture of glass, ceramics or zeolites. In alkali silicate solutions often used to synthesize those…
Local mobility in electrochemically inactive sodium in hard carbon anodes after the first cycle
Jensen, Anders C. S.; Olsson, Emilia; Au, Heather; Alptekin, Hande; Yang, Zhengqiang; Cottrell, Stephen; Yokoyama, Koji; Cai, Qiong; Titirici, Maria-Magdalena; Drew, Alan J.
Sodium ion batteries are a promising alternative to current lithium ion battery technology, providing relatively high capacity and good cycling stability at low cost. Hard carbons are today the anodes of choice but they suffer from poor rate performance and low initial coulombic efficiency. To improve the understanding of the…
Effect of the substrate temperature during gold-copper alloys thin film deposition by magnetron co-sputtering on the dealloying process
Chauvin, Adrien; Horak, Lukas; Duverger-Nédellec, Elen; Dopita, Milan; Tessier, Pierre-Yves; El Mel, Abdel-Aziz
Nanoporous gold is of great interest for many applications due to its three dimensional interconnected porosity at nanoscale. Among all currently use techniques to obtain nanoporous gold, dealloying is one of the most used method to create a well-controlled nanoporous morphology. Only few studies report on the creation of nanoporous…
Development and characterization of a novel soy lecithin-stearic acid and whey protein concentrate bigel system for potential edible applications
Bollom, Mark A.; Clark, Stephanie; Acevedo, Nuria C.
Bigels are a new technology with great potential in the food industry. Their success with drug delivery suggests they may be able to deliver sensitive compounds in foods, such as probiotics and bioactives. The purpose of this study was to develop and characterize a novel, edible bigel system. The bigel…
Microstructure and properties of polyacrylonitrile based carbon fibers
Lu, Junshan; Li, Weiwei; Kang, Hongliang; Feng, Libang; Xu, Jian; Liu, Ruigang
The microstructure of polyacrylonitrile (PAN)-based carbon fibers with different mechanical properties was investigated. It was found that the tensile strength of the PAN-based carbon fibers generally decrease with the increase in the modulus. The properties of PAN-based carbon fiber are mainly controlled by the microstructure and microvoids. The increase in…