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Kim, Ji Tae,Seol, Seung Kwon,Pyo, Jaeyeon,Lee, Ji San,Je, Jung Ho,Margaritondo, G. WILEY‐VCH Verlag 2011 Advanced Materials Vol.23 No.17
<P>The inside cover shows “nanocandle arrays” of conducting polymer. On p. 1968 Jung Ho Je, G. Margaritondo, and co‐workers demonstrate accurate and versatile three‐dimensional writing of conducting polymer nanowires based on guiding a monomer meniscus by pulling a micropipette during oxidative polymerization. This is an important step forward for the integration of organic electronic devices with high density and enhanced freedom in circuit design. </P>
A coherent synchrotron X-ray microradiology investigation of bubble and droplet coalescence
Weon, B. M.,Je, J. H.,Hwu, Y.,Margaritondo, G. International Union of Crystallography 2008 Journal of synchrotron radiation Vol.15 No.6
<▼1><P>Microradiology with coherent X-rays is shown to be very effective in revealing interfaces in multiphase systems and in particular gas bubbles. Its use has been tested in the study of bubble colescence validating the results with a simple theoretical analysis based on mass conservation.</P></▼1><▼2><P>A quantitative application of microradiology with coherent X-rays to the real-time study of microbubble and microdroplet coalescence phenomena, with specific emphasis on the size relations in three-body events, is presented. The results illustrate the remarkable effectiveness of coherent X-ray imaging in delineating interfaces in multiphase systems, in accurately measuring their geometric properties and in monitoring their dynamics.</P></▼2>
Advanced X-ray Microscopy in Materials and Biomedical Sciences
J.M. Yi,B.M. Weon,J.H. Je,Y. Hwu,G. Margaritondo 대한전자공학회 2008 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
In recent years, x-ray microscopy has been literally revolutionized by the exploitation of the unique characteristics of synchrotron sources. In particular, the high spatial coherence of the radiation significantly contributes to the development of advanced and powerful xray microscopy. The results are very high quality microradiology and microtomograhy images and movies - taken with a limited x-ray dose ? that find a variety of applications in materials science, biology and medical research. In this talk we review basic theory and selected applications of phase contrast x-ray microscopy to materials and biomedical sciences. Furthermore we introduce a new strategy of combining phase contrast radiology and diffraction x-ray microscopy to visualize atomic level defects such as misfit dislocations and micropipes in semiconductor single crystals. Finally phase contrast x-ray imaging in nanometer-resolution (< 30 ㎚) will be demonstrated.
Intense X-ray induced formation of silver nanoparticles stabilized by biocompatible polymers
Wang, Chang-Hai,Liu, Chi-Jen,Wang, Cheng-Liang,Chien, Chia-Chi,Hwu, Y.,Liu, Ru-Shi,Yang, Chung-Shi,Je, Jung-Ho,Lin, Hong-Ming,Margaritondo, G. Springer-Verlag 2009 Applied physics. A, Materials science & processing Vol.97 No.2
Hydrogen Bubbles and the Growth Morphology of Ramified Zinc by Electrodeposition
Hsu, Pei-Cheng,Seol, Seung-Kwon,Lo, Tsung-Nan,Liu, Chi-Jen,Wang, Chang-Liang,Lin, Chao-Sung,Hwu, Y.,Chen, C. H.,Chang, Liu-Wen,Je, J. H.,Margaritondo, G. The Electrochemical Society 2008 Journal of the Electrochemical Society Vol.155 No.5