作者：
Liu, H.;Zhang, Z. Z.;Wu, Y. J.;Dong, L. M.;Wang, H. O.;...
期刊：
Journal of Materials Science: Materials in Electronics,2019年30(20):18780-18787 ISSN：0957-4522
通讯作者：
Liu, H
作者机构：
[Liu, H.; Zhang, Z. Z.] Huaiyin Inst Technol, Fac Appl Technol, Huaian 223001, Peoples R China;[Wu, Y. J.] Fudan Univ, Inst Mol Mat & Devices, Dept Mat Sci, Shanghai 200438, Peoples R China;[Dong, L. M.] Changshu Inst Technol, Sch Automat Engn, Changshu 215500, Jiangsu, Peoples R China;[Wang, H. O.] Hangzhou Dianzi Univ, Inst Mat Phys, Hangzhou 310018, Zhejiang, Peoples R China;[Cao, M. X.] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
通讯机构：
[Liu, H.] H;Huaiyin Inst Technol, Fac Appl Technol, Huaian 223001, Peoples R China.
摘要：
A set of Ni doping Fe-Ga ribbons were fabricated using melt spinning method. The microstructure was studied using extended X-ray absorption fine structure spectroscopy (EXAFS), high resolution X-ray diffraction (HRXRD) and metallurgical microscope. The results of microstructure indicated that as Ni concentration increased, the lattice matrix transformed from body-centred cubic (bcc) to face-centred cubic (fcc), with the decrease of unit cell volume and the emergence of little amount B-2 and E2(1) phase. The result of magnetic and magnetostrictive properties showed that the saturation magnetization decreased with Ni doping. (110) texture in studied ribbons resulted in low saturation magnetic field and high saturation magnetostrction. In addition, small amount of precipitated phase E2(1) improved the magnetostricion of FeNiGa ribbons.
摘要：
Single nanowire becomes attractive as a basic component of various nanodevices. Nanowire joining is one of the crucial operations in micro-nano manufacturing. Compared with other joining methods, such as electrical current heating and mechanical pressure, laser illumination can yield metallic contacts through local precision nanosoldering. In this paper, the authors report the joining of one single copper nanowire (CuNW) to a silver film by a laser illumination method. They first cut the silver film on a flexible substrate to form a gap of about 1–4 μm by a 1030 nm femtosecond (fs) pulsed laser. Then, they coat CuNWs by dripping nanowire solution onto the gap, bridge the gap, and then join single CuNW with the fs pulsed laser. By comparison with scanning electron microscope images after and before laser illumination, it is found that the local silver film melts, then wraps partial CuNW, and finally crystallizes. So, the joining is through a part of CuNW embedded in a silver film. In addition, the authors further analyze the joining situation by directly measuring the resistance variation between after joining (Ra) and before joining (Rb). It is demonstrated that the resistance ratio of Ra to Rb decreases from 0.835 to 0.172 with increasing laser power from 10 to 40 mW for 3 s of the laser illumination time. The resistance ratio of Ra to Rb decreases from 0.936 to 0.368 with an increment of the laser illumination time from 1 to 4 s at a laser power of 30 mW. Finally, the authors find that the welded single CuNW enables sensing of glucose at a concentration of 10−5M.
通讯机构：
Key Laboratory for Micro/Nat 10-Optoelectronic Devices of Ministry of Education, College of Computer Science and Electronic Engineering, Hunan University, Changsha, Hunan, China
作者：
Wang, H. O.;Zhao, P.;Sun, J. J.;Tan, W. S.*;Su, K. P.;...
期刊：
Journal of Materials Science: Materials in Electronics,2018年29(15):13176-13179 ISSN：0957-4522
通讯作者：
Huo, D. X.;Tan, W. S.
作者机构：
[Wang, H. O.; Zhao, P.; Huang, S.; Huo, D. X.; Su, K. P.; Sun, J. J.] Hangzhou Dianzi Univ, Inst Mat Phys, Hangzhou 310018, Zhejiang, Peoples R China.;[Tan, W. S.] Hunan City Univ, Coll Informat & Elect Engn, All Solid State Energy Storage Mat & Devices Key, Yiyang 413002, Peoples R China.;[Tan, W. S.] Nanjing Univ Sci & Technol, Dept Appl Phys, Minist Educ, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China.
通讯机构：
[Huo, D. X.; Tan, W. S.] H;[Tan, W. S.] N;Hangzhou Dianzi Univ, Inst Mat Phys, Hangzhou 310018, Zhejiang, Peoples R China.;Hunan City Univ, Coll Informat & Elect Engn, All Solid State Energy Storage Mat & Devices Key, Yiyang 413002, Peoples R China.;Nanjing Univ Sci & Technol, Dept Appl Phys, Minist Educ, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China.
摘要：
Collaborative enhancements from surface plasmons (SPs) and whispering-gallery modes (WGMs) can induce intense near-field effects with high spatial localization around the surface of a semiconducting material. One can construct a highly efficient hybrid microcavity using semiconducting materials through resonant coupling between SPs and WGMs. Hexagonal ZnO micro-/nanostructures, which have been employed as natural WGM microcavities for ultraviolet (UV) lasing, can be used as ideal platforms to construct such hybrid microcavities. Here, we comprehensively review the recent efforts for improving lasing performance by resonant coupling between SPs and WGMs. Traditional SPs originating from various metals as well as novel SPs originating from atomic layers such as graphene are considered. Moreover, we discuss the mechanism of light-matter interactions beyond the improvements in lasing performance.
摘要：
The identification of overlapping protein complexes in proteinprotein interaction (PPI) networks may elucidate cellular functional organizations and their underlying cellular mechanisms. Recently, many protein complex mining algorithms have been developed for PPI networks. However, the majority of available algorithms primarily depend on mining dense subgraphs as protein complexes, thereby failing to consider the inherent biological meanings between protein pairs. Thus, methods for identifying protein complexes using the biological significance hidden in edges need to be investigated. In this paper, we propose IK-medoids, an improved method that detects overlapping protein complexes from weighted PPI networks based on the rough fuzzy relationships between protein pairs. The presented algorithm is primarily based on the fuzzy relationship that obtains the non-overlapping protein substructure, and then K-medoids is executed from the proteins in the PPI network. Next, the similarity between one protein and each candidate complex is calculated to determine whether the protein belongs to one or multiple complexes with the ration of each similarity to maximum similarity. In the end, overlapped protein complexes are merged to form the final protein complexes. We apply the method to three PPI networks and validate the results using two reference protein complexes retrieved from public databases. Experimental results show that our method outperforms classical algorithms, such as ClusterONE, CMC, MCL, OSLOM, and RFC, and achieves ideal overall performance in terms of F-measure, sensitivity, and accuracy.
摘要：
We experimentally study the spatiotemporal evolution of chirped femtosecond laser pulses at a specific spatial position, such as the modulation peak position (MPP), during small-scale self-focusing (SSSF). It is found that the spatial peak intensity at the MPP increases rapidly initially with increment of input power due to the effect of SSSF, however it becomes saturated at the higher power because the finite energy of the beam restraints increasing of the peak intensity at the MPP. The pulse width at the MPP is compressed gradually with rising power owing to the spatiotemporal coupling effect, which will reach the narrowest when the spatial peak intensity at the MPP reaches the maximum. Further, the influence of chirp on the pulse width evolution at the MPP is discussed theoretically. We find that the negative chirp accelerates the pulse width compression because the negative chirp enhances the process of SSSF, but the positive chirp is counterproductive. Our results may provide some helps for propagation and amplification of broadband laser pulses.
作者：
Guangfu Zhang;Ye Tian;Yangbao Deng;Dongchu Jiang;Shuguang Deng
期刊：
Journal of Nanotechnology,2018年2018:1-5 ISSN：1687-9503
通讯作者：
Zhang, G.
作者机构：
School of Communication and Electronic Engineering, Hunan City University, Yiyang, 413000, China;Key Laboratory of Modeling and Monitoring on the Near-Earth Electromagnetic Environments, Changsha University of Science and Technology, Changsha, 410076, China
通讯机构：
School of Communication and Electronic Engineering, Hunan City University, Yiyang, China
摘要：
When a low-power finite-energy Airy pulse (FEAP) and a high-power soliton pulse simultaneously propagate in an optical fiber, we numerically study the evolution of the FEAP affected by higher-order effects, including third-order dispersion (TOD), Raman scattering and self-steepening (SS). It is found that shedding solitons are generated from the FEAP due to the effect of cross-phase modulation (XPM). The TOD only affects the center position of the shedding soliton, but does not change the spectrum structure. The truncation coefficient of a FEAP, TOD and SS can be used to manipulate the Raman-induced frequency shift (RIFS). It is demonstrated that the RIFS is suppressed obviously by both positive TOD, SS and a small truncation coefficient, but the RIFS is enhanced by the negative TOD and a larger truncation coefficient. Further, we comparatively study the simultaneous contributions of TOD, Raman, and SS to the evolution of a FEAP and a Sech pulse, respectively. It is shown that the FEAP generates some static solitons besides the conventional Raman soliton and the whole spectrum is broadened that extended towards to the blue-shifted side besides the conventional red-shifted components. Our results indicate that the FEAP has potential application in supercontinuum generation and broadband sources.
