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Ultrasensitive Near‐Infrared Raman Reporters for SERS‐Based In Vivo Cancer Detection
Samanta, Animesh,Maiti, Kaustabh Kumar,Soh, Kiat‐,Seng,Liao, Xiaojun,Vendrell, Marc,Dinish, U. S.,Yun, Seong‐,Wook,Bhuvaneswari, Ramaswamy,Kim, Hyori,Rautela, Shashi,Chung, Junho,Olivo, Ma WILEY‐VCH Verlag 2011 Angewandte Chemie Vol.123 No.27
<P><B>Zuverlässige Berichterstattung</B>: Das Screening einer 80‐teiligen Tricarbocyanin‐Bibliothek lieferte CyNAMLA‐381 als Nahinfrarot‐SERS‐Reporter mit guter Signalstabilität und höherer Empfindlichkeit als der Standard (SERS=oberflächenverstärkte Raman‐Spektroskopie). Durch Verkapselung von CyNAMLA‐381 an der Oberfläche von Gold‐Nanopartikeln und Konjugation mit Antikörpern wurden SERS‐Nanomarker mit ausgezeichneter Empfindlichkeit, Stabilität und Tumorspezifität in Xenograft‐Modellen erhalten (siehe Bild).</P>
Bandwidth-Related Optimization in High-Speed Frequency Dividers using SiGe Technology
Chao-Zhou Nan,Xiao-Peng Yu,Wei-Meng Lim,Bo-Yu Hu,Zheng-Hao Lu,Yang Liu,Kiat-Seng Yeo 대한전자공학회 2012 Journal of semiconductor technology and science Vol.12 No.1
In this paper, the trade-off related to bandwidth of high-speed common-mode logic frequency divider is analyzed in detail. A method to optimize the operating frequency, band-width as well as power consumption is proposed. This method is based on bipolar device characteristics, whereby a negative resistance model can be used to estimate the optimal normalized upper frequency and lower frequency of frequency dividers under different conditions, which is conventionally ignored in literatures. This method provides a simple but efficient procedure in designing high performance frequency dividers for different applications. To verify the proposed method, a static divide-by-2 at millimeter wave ranges is implemented in 180 ㎚ SiGe technology. Measurement results of the divider demonstrate significant improvement in the figure of merit as compared with literatures.
Bandwidth-Related Optimization in High-Speed Frequency Dividers using SiGe Technology
Nan, Chao-Zhou,Yu, Xiao-Peng,Lim, Wei-Meng,Hu, Bo-Yu,Lu, Zheng-Hao,Liu, Yang,Yeo, Kiat-Seng The Institute of Electronics and Information Engin 2012 Journal of semiconductor technology and science Vol.12 No.1
In this paper, the trade-off related to bandwidth of high-speed common-mode logic frequency divider is analyzed in detail. A method to optimize the operating frequency, band-width as well as power consumption is proposed. This method is based on bipolar device characteristics, whereby a negative resistance model can be used to estimate the optimal normalized upper frequency and lower frequency of frequency dividers under different conditions, which is conventionally ignored in literatures. This method provides a simple but efficient procedure in designing high performance frequency dividers for different applications. To verify the proposed method, a static divide-by-2 at millimeter wave ranges is implemented in 180 nm SiGe technology. Measurement results of the divider demonstrate significant improvement in the figure of merit as compared with literatures.