Technical Articles From Southeast University (SEU)
Read technical articles about electronics manufacturing added by Southeast University (SEU)
- SMTnet
- »
- Technical Library
- »
- Contributors
- »
- Articles from Southeast University (SEU)
2 technical articles added by Southeast University (SEU)
Company Information:
Deep Learning Based Defect Detection for Solder Joints on Industrial X-Ray Circuit Board Images
May 06, 2021 | Qianru Zhang, Meng Zhang, Chinthaka Gamanayakey, Chau Yueny, Zehao Gengz, Hirunima Jayasekaray, Xuewen Zhangz, Chia-wei Woox, Jenny Lowx, Xiang Liuz
Quality control is of vital importance during electronics production. As the methods of producing electronic circuits improve, there is an increasing chance of solder defects during assembling the printed circuit board (PCB). Many technologies have been incorporated for inspecting failed soldering, such as X-ray imaging, optical imaging, and thermal imaging. With some advanced algorithms, the new technologies are expected to control the production quality based on the digital images. However, current algorithms sometimes are not accurate enough to meet the quality control. Specialists are needed to do a follow-up checking. For automated X-ray inspection, joint of interest on the X-ray image is located by region of interest (ROI) and inspected by some algorithms. Some incorrect ROIs deteriorate the inspection algorithm....
Conformal Surface Plasmons Propagating on Ultrathin and Flexible Films
Sep 05, 2013 | Xiaopeng Shen,Tie Jun Cui,Diego Martin-Cano, Francisco J. Garcia-Vidal
Surface plasmon polaritons (SPPs) are localized surface electromagnetic waves that propagate along the interface between a metal and a dielectric. Owing to their inherent subwavelength confinement, SPPs have a strong potential to become building blocks of a type of photonic circuitry built up on 2D metal surfaces; however, SPPs are difficult to control on curved surfaces conformably and flexibly to produce advanced functional devices. Here we propose the concept of conformal surface plasmons (CSPs), surface plasmon waves that can propagate on ultrathin and flexible films to long distances in a wide broadband range from microwave to mid-infrared frequencies....
