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Institution

University of Science and Technology Beijing

EducationBeijing, China
About: University of Science and Technology Beijing is a education organization based out in Beijing, China. It is known for research contribution in the topics: Microstructure & Alloy. The organization has 41558 authors who have published 44473 publications receiving 623229 citations. The organization is also known as: Beijing Steel and Iron Institute.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the authors examine a manufacturer's pricing strategies in a dual-channel supply chain, in which the manufacturer is a Stackelberg leader and the retailer is a follower.
Abstract: We examine a manufacturer's pricing strategies in a dual-channel supply chain, in which the manufacturer is a Stackelberg leader and the retailer is a follower. We show the conditions under which the manufacturer and the retailer both prefer a dual-channel supply chain. We examine the coordination schemes for a dual-channel supply chain and find that a manufacturer's contract with a wholesale price and a price for the direct channel can coordinate the dual-channel supply channel, benefiting the retailer but not the manufacturer. We illustrate how such a contract with a complementary agreement, such as a two-part tariff or a profit-sharing agreement, can coordinate the dual-channel supply chain and enable both the manufacturer and the retailer to be a win–win.

436 citations

Journal ArticleDOI
TL;DR: A BMG composite that exhibits large tensile ductility with signifi cant work-hardening capability is reported, which offers a new paradigm for developing BMGs with improved ductility as practical engineering materials.
Abstract: Bulk metallic glasses (BMGs) have shown a unique combination of mechanical, chemical, and physical properties, [ 1–5 ] but their room-temperature brittleness has been the stumbling block for real structural applications. [ 6 , 7 ] To answer this challenge, the concept of developing composite microstructures by combining the glassy matrix with crystalline phases at different length scales has been developed, through which an improvement in tensile ductility has been obtained in several zirconium and titanium-based BMG composites. [ 8–13 ] However, these BMG composites showed a macroscopic strain softening phenomenon with an early onset of necking (i.e., the maximum strength occurs at the yield point) because of a lack of workhardening mechanisms (endows the materials with minute damage tolerance), which would give rise to serious engineering problems therefrom. In this Communication, we report a BMG composite that exhibits large tensile ductility with signifi cant work-hardening capability. Our current fi nding offers a new paradigm for developing BMGs with improved ductility as practical engineering materials. A work-hardening phenomenon in compression has been reported in both BMGs and BMG composites and a few scenarios were proposed for understanding the strain-hardening capability, such as severe lattice distortion in the crystalline phases, pile ups of dislocations close to the interfaces between the reinforced phases and matrix, [ 14 ] atomic-scale inhomogeneity in the amorphous phase, and stress-induced martensitic transformation. [ 15–17 ] To date, however, a working-hardening capability has not been discovered in tension for BMGs or their composites. Referring to the concept of the TRIP (transformationinduced plasticity) steels, [ 18 ] in this study, we attempted to fabricate a BMG composite with isolated spherical crystalline phases that undergo martensitic transformation during tensile deformation. With such a special composite structure, large tensile ductility and signifi cant work-hardening capability could be induced. Figure 1a shows a representative cross section of the current BMG composite, which demonstrates a typical BMG composite microstructure that contains spherical crystalline phases homogeneously embedded in the amorphous matrix.

436 citations

Journal ArticleDOI
TL;DR: In this paper, the authors report the fabrication of a self-assembled 3D films platform that combines a natural viscoelastic property material P(VDF-TrFe) with an electrically conductive material rGO for the first time.

434 citations

Journal ArticleDOI
TL;DR: Zhang et al. as discussed by the authors proposed a method for the detection of defects in materials based on the properties of materials and their properties in terms of their properties and properties of properties.
Abstract: [*] Prof. Y. Zhang, X. M. Zhang Department of Materials Physics and Chemistry State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 (PR China) E-mail: yuezhang@ustb.edu.cn Prof. Z. L. Wang, X. M. Zhang, M. Y. Lu School of Materials Science and Engineering Georgia Institute of Technology Atlanta, Georgia 30332-0245, (USA) E-mail: zhong.wang@mse.gatech.edu Prof. L. J. Chen, M. Y. Lu Department of Materials Science and Engineering National Tsing Hua University Hsinchu, Taiwan 30043, (ROC)

432 citations

Journal ArticleDOI
TL;DR: A new non-fullerene acceptor with an optical band gap (Egopt) of 1.68 eV is designed for the front subcells and the phase-separation morphology of a fullerene-free active layer is optimized to fabricate the rear subcell.
Abstract: Fabricating organic solar cells (OSCs) with a tandem structure has been considered an effective method to overcome the limited light absorption spectra of organic photovoltaic materials. Currently, the most efficient tandem OSCs are fabricated by adopting fullerene derivatives as acceptors. In this work, we designed a new non-fullerene acceptor with an optical band gap (Egopt) of 1.68 eV for the front subcells and optimized the phase-separation morphology of a fullerene-free active layer with an Egopt of 1.36 eV to fabricate the rear subcell. The two subcells show a low energy loss and high external quantum efficiency, and their photoresponse spectra are complementary. In addition, an interconnection layer (ICL) composed of ZnO and a pH-neutral self-doped conductive polymer, PCP-Na, with high light transmittance in the near-IR range was developed. From the highly optimized subcells and ICL, solution-processed fullerene-free tandem OSCs with an average power conversion efficiency (PCE) greater than 13% wer...

430 citations


Authors

Showing all 41904 results

NameH-indexPapersCitations
Zhong Lin Wang2452529259003
Yang Yang1712644153049
Jun Chen136185677368
Jun Lu135152699767
Jie Liu131153168891
Shuai Liu129109580823
Jian Zhou128300791402
Chao Zhang127311984711
Shaobin Wang12687252463
Tao Zhang123277283866
Jian Liu117209073156
Xin Li114277871389
Jianhui Hou11042953265
Hong Wang110163351811
Baoshan Xing10982348944
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023161
2022807
20214,662
20204,369
20194,164
20183,586