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Designing Physical Unclonable Functions From Optically Active Materials

Advanced Materials, EarlyView.
Assigning unforgeable “fingerprints” to manufactured goods is a key strategy to fight global counterfeiting. Optical physical unclonable functions (PUFs) are chemically generated random patterns of optically active materials serving as unique authenticators.
Maxime Klausen, Junfang Zhang, Molly M. Stevens   +2 more
wiley   +1 more source

Electrospun Lignin/ZnO Nanofibrous Membranes for Self‐Powered Ultrasensitive Flexible Airflow Sensor and Wearable Device

Advanced Materials, EarlyView.
This study explores the novel sensing applications of water evaporation‐induced power generation, by using lignin/ZnO nanofibrous membranes for sensing airflow through output voltage variation. Obtained lignin/ZnO airflow sensors are self‐powered, precise, and quick‐responding, and can be used as wearable devices for breath monitor, surrounding ...
Yifei Zhan, Jade Poisson, Xintong Meng, Zengbin Wang, Lizhen Chen, Tun‐Hui Wu, Robert Koehler, Kai Zhang   +7 more
wiley   +1 more source

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Investigation on hot deformation behavior of Waspaloy

Materials Science and Engineering: A, 2013
Abstract The hot deformation behavior of the Waspaloy was investigated by means of hot compression tests, metallographic observations and processing map at temperature between 950 °C and 1150 °C, strain rate between 0.01 s −1 and 10 s −1 under strain of 0.8.
A. Amiri, BRUSCHI, STEFANIA, M. H. Sadeghi, BARIANI, PAOLO FRANCESCO   +3 more
openaire   +3 more sources

Deformation Behavior of Glass Nanostructures in Hot Embossing

ACS Applied Materials & Interfaces, 2020
In the nanoscale glass formation, the flow and deformation behavior of glass materials are quite different from those in the macroscale because the mold cavity influences the viscous flow behaviors of glass because of the size effect. The knowledge of macroglass molding process no longer applies to the fabrication of glass microparts by hot embossing ...
Kangsen Li, Gang Xu, Xiaohua Liu, Feng Gong   +3 more
openaire   +3 more sources

Hot Deformation Behavior of Bearing Steels

Journal of Engineering Materials and Technology, 2004
The material behaviors of two types of bearing steels at hot working conditions are investigated. Stress-strain curves at various temperatures (900–1300°C) and strain rates (1–50/s) are obtained by compression tests with a computer controlled servo-hydraulic Gleeble 3800 testing machine. Elongation and reduction of the area are also obtained by tensile
Jae Seong Lee, J. K. Lee, Ho Keun Moon, Sun Joon Yoo, Man-Soo Joun   +4 more
openaire   +3 more sources

Hot Deformation Behavior of GCr15 Steel

Journal of Iron and Steel Research International, 2013
Hot deformation behavior of GCr15 (ASTM 52100) steel was investigated using single-hit compression tests on Gleeble-1500 simulator at the temperature range of 850–1100 °C and strain rate range of 0.1–10 s−1. The flow stress constitutive equation of GCr15 steel during hot deformation was determined by stress-strain curves analysis on the basis of the ...
Ning-qi Peng, Zheng-dong Liu, Jun Yao, Guang-bo Tang   +3 more
openaire   +2 more sources

Hot deformation behavior of FGH96 superalloys

Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material, 2006
Abstract The hot deformation behavior of FGH96 superalloys at 1070–1170°C and 5×10−4-2×10−1 s−1 were investigated by means of the isothermal compression tests at a Gleeble-1500 thermal mechanical simulator. The results show that dynamic recovery acts as the main softening mechanism below 2×10−3 s−1 whereas dynamic recrystallization acts as the main ...
Guoquan Liu, Benfu Hu, Jiantao Liu, Yiwen Zhang, Yue-peng Song, Ziran Qin   +5 more
openaire   +2 more sources

Hot Deformation Behavior of TC21 Alloy

Applied Mechanics and Materials, 2013
The dynamic recrystallization behavior of TC21 alloy during hot compression deformation was investigated at 870~990 °C and strain rate of 0.001~10 s-1 on a Gleeble-3500 thermo-simulation machine. The results show that dynamic recovery and dynamic recrystallization occurs during hot deformation.
Hai Lin Xu, Hong Bo Dong, Yong Wang
openaire   +2 more sources

Hot deformation behavior of 2060 alloy

Journal of Alloys and Compounds, 2015
Abstract The hot deformation behavior of 2060 alloy has been studied using thermal simulation test, EBSD technique and transmission electron microscopy. The flow stress could be described by a Zener-Hollomon parameter in hyperbolic sine function with the hot deformation activation energy of 205 kJ/mol.
Yufeng Nie, Yufeng Nie, Ling Ou, Ling Ou, Haigen Jian, Ziqiao Zheng   +5 more
openaire   +2 more sources

Hot Deformation Behavior of Hot-Extruded AA7175 Through Hot Torsion Tests

Journal of Nanoscience and Nanotechnology, 2018
The hot deformation behavior of hot-extruded AA7175 was investigated with flow curves and processing maps through hot torsion tests. The flow curves and the deformed microstructures revealed that dynamic recrystallization (DRX) occurred in the hot-extruded AA7175 during hot working. The failure strain was highest at medium temperature.
Se-Yeon Lee, Kwang-Tae Son, Sang-Wook Kim, Ji-Woon Lee, Taek-Kyun Jung, Hyeon-Woo Son, Sang-Ho Oh, Soong-Keun Hyun, Ho-Joon Choi   +8 more
openaire   +2 more sources