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Sintered silver has been used as an interconnect material for power electronic components in recent years. In the early days of development, micron-sized Ag particles were used for the silver conductive paste, however, high temperature and high pressures of up to 40 MPa were needed to achieve high performance sintered joints, which may damage the electrical component.Therefore,low pressure sintering using Ag nanoparticles has received great interest. In our work, we evaluated the properties of the silver nanoparticle conductive paste as a low-temperature, low-pressure interconnect material. Shear strength test showed that the silver paste with 60%wt Ag loading sintered under 10MPa for 20 min can achieve the best result among 10min, 20min, 30min and 40min.Moreover, as the sintering pressure increases, Cu-Cu joints clearly increased. Silver content is also an important factor affecting the shear strength. When we increase the silver loading from 60%wt to 80%wt, shear strength increases simultaneous. Shear test results show that a high shear strength of 57MPa can be achieved for the 80wt% Ag loading under 10MP at 300° C. which indicates that our silver nanoparticle conductive paste has excellent mechanical properties.

Silver nanowire (AgNW) transparent electrode stands out as a promising candidate to replace indium tin oxide (ITO), whereas the high cost and electromigration of silver ions overshadow the applications of AgNWs in optoelectronics. Copper nanowire (CuNW) is attracting increasing interest and attentions due to its high intrinsic electrical conductivity, earth abundance and lower prince, but the oxidation of CuNW severely prohibits its practical applications, which is an issue to be solved urgently. Herein, nanowelding of CuNWs is achieved via an in-situ redox approach. In this welding process, the copper oxide on the surface of CuNWs as a natural solder is reduced by sodium borohydride (NaBH4) to generate Cu atoms, which selectively aggregate at the intersection of CuNWs and merge the junction owing to the positive site here. The sheet resistance of welded CuNW (W-CuNW) transparent conducting films drop obviously without sacrificing its transmittance, which thereby significantly promotes the optoelectronic performance of the film. Poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS) as a protective layer is coated onto the W-CuNW film to prepare PEDOT:PSS/W-CuNW film. The optoelectronic properties of the PEDOT:PSS/W-CuNW film show excellent stability in ambient atmosphere for 30 days. Beside, no obvious change in the sheet resistance of the PEDOT:PSS/W-CuNW film is observed after 5000 bending cycles under a bending radius of 2 mm, indicating the outstanding mechanical flexibility. Finally, electromagnetic interference (EMI) shielding effectiveness (SE) of the PEDOT:PSS/W-CuNW film is measured within the frequency range from 8.2 GHz to 12.5 GHz. The PEDOT:PSS/W-CuNW film with a EMI SE value above 27 dB and transmittance of 85% underlines the great potential applications in displays, touch panels, airborne optoelectronic pods and aviation camcorders.

Both radar and AIS (Automatic Identification System) are the most important navigational equipment for a ship. But, there are some differences between them in the performance and the target information. The paper studied the difference and characteristic of the dynamic target information from the radar and the AIS. Based on the survey platform of the target information system developed by the own, measurements were vastly done for the target's dynamic information, including position, speed and course. It evaluated the differences between them, and got the very important statistic results. It offers not only the valuable references for the voyager to understand and identify the target information characteristic, but also the research foundation of the information processing such as target information fusion, and the intelligent ship collision avoidance and so on. Keywords-Radar; AIS; Target information; Difference

AIS (Automatic Identification System), a new type of marine equipment, together with radar, are all the key navaid for a ship to navigate. Now in the seafaring, it is one of the most attentive research issues how to adequately and effectively use their information to improve the sail safety. The paper developed the integrated target information system based on ECDIS (Electronic Chart Display and Information system), Using Microsoft SQL 2000. It can display not only the target information of the radar and AIS on the sea, but also the underwater information including the depth of water and navigational marks. There are many functions on the system including data management, sea routine plan and so on. The results of the field test showed that it has a good interface. It is intuitionistic and convenient for a deck officer to watch and identify the offshore targets around, so as to judge if collision danger correctly. It contributes to not only promote the safety of navigation, but also offer a valuable platform of the research and experimentation in the target information processing such as fusion.

AIS (Automatic Identification System), a new type of Navaid at sea, is one of the key equipment to navigation for a ship as same as radar. But, there are many differences between them in the performance. It is very important to fuse the target information from the two sensors to get mutual benefits. The paper studies on the association arithmetic of the targets from the two sensors by adopting T_D coarse target association judgment and multi-factor fuzzy integration decision-making, including target position coordinate conversion, space time unification and so on. By the use of computer simulation, the results show that the arithmetic is right and effective. At the same time, It discusses the relation of the association probability with the association threshold.