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Author: guangjun cheng
Displaying records 11 to 14.
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11. The influence of temperature on the magnetic behavior of colloidal cobalt nanoparticles
C L Dennis, Guangjun Cheng, K A Baler, B B Maranville, Angela R Hight Walker, R D Shull
12. Magnetic-field-induced assemblies of cobalt nanoparticles
Guangjun Cheng, Angela R Hight Walker, Gerald T Fraser, D B Romero
13. Surface Enhanced Raman Spectroscopy in a Microfluidic Device
D Dunmire, D B Romero, Guangjun Cheng, Angela R Hight Walker
Surface enhanced Raman spectroscopy (SERS) is employed to study the solution phase vibrational structure of molecules on gold and silver colloids. Gold and silver colloids show large enhancement factors enabling sub-micromolar detection limits. Using ...
14. Synthesis of Bioconjugated Magnetic Nanoparticles for Magneto-Raman Study
Guangjun Cheng, D B Romero, D Dunmire, Angela R Hight Walker
We are investigating the effects of an externally applied magnetic field on the structure and magnetic properties of biomolecules (DNA and proteins). A newly constructed, magneto-Raman confocal microscope system couples a cryo-magnet to a triple grat ...