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| 1 | Comparative study of VOF, LS, and VOSET on pore-scale immiscible waterflooding modeling显示文摘The pore-scale mechanism of the waterflooding contributes to enhancing oil recovery,which has been widely emphasized in the petroleum industry.In this paper,the performances and accuracy of three tracking interface algorithms,including VOF,LS,and VOSET,are compared and analyzed through twophase flow in the conceptual model of pore-throat.The results show that the VOSET method combines the advantages of the other two methods,which not only satisfies the mass conservation but also improves the continuity of the physical quantities near the interface.Then,based on the binary image of the pore,the two-dimensional micro pore model is reconstructed by extracting image contour.The grid independence of the reconstructed pore model is verified by the single-phase flow simulation.The waterflooding process in the reconstructed pore model is simulated using the VOSET method,and the effects of displacement speed and wettability on the oil recovery are analyzed.The morphologies of residual oil under different conditions of wettability are investigated and analyzed.The study provides a basic theory for modeling the pore-scale oil-water flow and optimizing the scheme of the water injection. | Jiajun Peng Rui Song Yao Wang Hanmin Xiao | 2021 | Petroleum2021，7，3： | 1 |
| 2 | Fabrication of ionic polymer-metal composites (IPMCs) and robot design显示文摘 | Peng Hanmin Ding Qingjun Li Huafeng | 2009 | Frontiers of Mechanical Engineering in China2009，4，3： | 1 |
| 3 | Flexible, wearable biosensors for digital health显示文摘Flexible and stretchable biosensors have the advantage of enhanced signal validity and patient comfort during physiological signal sensing and biomolecular analysis,crucial for disease diagnosis,treatment and health management.Their lightness,softness and excellent mechanical properties enable effective skin-device interface coupling and skin safety profiles,realizing multi-functional,intelligent real-time sensing.In this review,the basic sensing principles of biosensor systems and their applications are discussed.Moreover,the potential applications and prospective progress of these biosensors are further prospected.Flexible,wearable biosensors have the potential to realize continuous and long-term health monitoring in clinical and daily health care. | Pancheng Zhu Hanmin Peng Alina Y.Rwei | 2022 | Medicine in Novel Technology and Devices2022，，2： | 0 |
| 4 | Efficient ternary organic solar cells based on a twin spiro-type non-fullerene acceptor显示文摘A novel small-molecule(SM) acceptor DTF-IC is designed and synthesized in this work. The power conversion efficiency(PCE) of ternary OSCs increased up to 12.14% from 10.90% by incorporating 10 wt% of DTF-IC as second acceptors into the binary OSCs consisting of PBDB-T as donor and IT-M as acceptor. This was mainly due to the large increase in short-circuit current(Jsc) from 16.18 to 17.95 mA/cm^2, without any drop in the open-circuit voltage(Voc) and fill factor(FF). The addition of DTF-IC enabled the donor and acceptor to form a distinct complementary absorption profile in the visible-light region, which boosted the photon harvesting in the range of 730–800 nm and consequently increased the Jscof the ternary system by 11%. Moreover, there was an energy transfer between the two SM acceptors, favorable for enhancing charge separation and transfer as well as reducing charge recombination at PBDB-T:IT-M and PBDB-T:DTF-IC interface. Simultaneously, HOMO and LUMO energy levels of DTF-IC were lower than those of PBDB-T, but still higher than those of IT-M. Thus, DTF-IC is able to provide a cascading energy level with the host donor and acceptor which are beneficial for efficient charge transfer between the acceptors and facilitating exciton dissociation and carrier transport. Meanwhile, the highly crystalline DTF-IC as a third component can improve the crystallization process of the active layer while maintaining proper phase separation. This work proposes a novel idea for non-fullerene acceptors achieved via twin spiro-type structure modifying by indanone and provides a new direction for the selection of ternary solar cell materials. | Lirong Wu Lingchao Xie Hanmin Tian Ruixiang Peng Jiaming Huang Billy Fanady Wei Song Songting Tan Wengang Bi Ziyi Ge | 2019 | Science Bulletin2019，64，15： | 0 |
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