Xiaojun Qin

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Compared with carbon nanotubes and graphene, graphene oxide (GO) exhibits excellent water solubility and biocompatibility in addition to the characteristic G band in Raman spectra. Therefore GO might be able to act as a flexible Raman probe to image cells or tissues through Raman mapping. However, the weak intensity of the G band restricts such applications(More)
The growth of semiconducting single-walled carbon nanotubes (s-SWNTs) on flat substrates is essential for the application of SWNTs in electronic and optoelectronic devices. We developed a flexible strategy to selectively grow s-SWNTs on silicon substrates using a ceria-supported iron or cobalt catalysts. Ceria, which stores active oxygen, plays a crucial(More)
A manganese dioxide (MnO2)-methanesulfonic acid (CH3SO3H) oxidation system has been developed to efficiently promote direct coupling of benzylic ethers and carbamates with simple ketones via oxidative C-H bond activation. The alkylation proceeds smoothly under air atmosphere to afford the corresponding products in good to excellent yields (53-87%). The(More)
ii Acknowledgments First of all, I would like to express my deepest thanks to my advisor, Dr. Nina Lam who encourages and guided me through my study. I also want to sincerely thank Dr. Robert Rohli and Mr. Dewitt Braud for serving on my thesis committee and for their precious time and valuable suggestion. Secondly, I would like to thank my dear husband, Wei(More)
SECloud is a automatic platform to deal with the resource-intensive and labor-intensive nature of high-quality software analysis. SECloud parallelizes symbolic execution in computing cloud to cope with path explosion. To our knowledge, SECloud is the first binary analyzing software that scales to large clusters of machines and can automatically test(More)
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