Browsing by Author "Liu, Chien-Ming"

Now showing 1 - 2 of 2

Formation of Sn-rich phases via the decomposition of Cu6Sn5 compounds during current stressing
(2014-06-01)
Lin, C. K.
;
Liu, Chien-Ming
;
Chen, Chih
;
材料科學與工程學系
;
Department of Materials Science and Engineering
This study examined the formation of Sn-rich phases in the matrix of Cu-Sn-Ni intermetallic compounds (IMCs) after current stressing of 1.2 X 104 A/cm(2) at 160 degrees C. The Sn-rich phases were formed at the cathode end of the solder joints with Cu metallization, and this formation was attributed to the decomposition of Cu6Sn5 IMCs. When the Cu6Sn5 IMCs were transformed into Cu3Sn during current stressing, Sn atoms were released. When the supply of Cu atoms became deficient, Sn atoms accumulated to form Sn-rich phases among the Cu-Sn-Ni IMCs. (C) 2014 Elsevier B.V. All rights reserved.
Magnetic bead-based DNA detection with multi-layers quantum dots labeling for rapid detection of Escherichia coli O157:H7
(2008-12-01)
Liu, Yi-Ju
;
Yao, Da-Jeng
;
Chang, Hwan-You
;
Liu, Chien-Ming
;
Chen, Chih
This work demonstrated the feasibility of detecting 250 zM Escherichia coli O157:H7 eaeA target DNA by using a magnetic bead-based DNA detection assay with designed labeling strategy within 40-60 min. The magnetic beads were used as the solid support for the binding probe and isolated the target DNA from the sample. The detection signals could be amplified from the multi-layers biotin-streptavidin conjugated quantum dots based on binding with specific designed biotinlyted linker. This assay method would provide a simple, rapid, and ultra-sensitive detection method for DNA or other biomolecular analysis. (C) 2008 Elsevier B.V. All rights reserved.