2013 Fall Graduate Colloquium Series: Zhiyue Ding/Kranti Gunthoti

DateNovember 1, 2013
Time3:35 - 5:00 pm
LocationBaylor Sciences Building, Room E.125
Zhiyue Ding

Growing ZnSe/Si Bi-coaxial Nanowire Heterostructure Via a One Step Evaporation Method

One step evaporation method for growing ZnSe/Si Bi-coaxial nanowire heterostructure is introduced in this paper, which results in bi-coaxial
nanowires with typical diameter of 80-100nm. The products were characterized
by XRD, TEM and SAED. The analysis of those patterns would be described in the slide. Also, a possible growth mechanism of ZnSe/Si bi-coaxial nanowire would be explained. Besides, a similar growth mechanism which is known as Vapor-liquid-Solid mechanism would be introduced in the slide. That mechanism could also be used to growth nanowires of some other materials like
CdTe, which is a promoting materials in optoelectronic fields.
(From paperˇŻZnSe-Si Bi-coaxial Nanowire HeterostructureˇŻ, C. R. Wang et al, Adv. Funct. Mater. )

Kranti Gunthoti

New Boson Mass and Spin-Parity Measurements at CMS

In July 2012 CMS announced the discovery of a new particle in the mass region around 126 GeV. This particle is consistent with the Higgs boson but it will take further work to determine whether or not it is the Higgs boson predicted by the
Standard Model(SM). I will talk on the first study of the spin-parity of the newly
discovered boson. The SM spin¨Cparity Jp = 0+ hypothesis is confronted with alternative models using the kinematic properties of the Higgs boson decays into ZZ channel (HˇúZZ*ˇú4l). The analysis uses data collected by the CMS detector at the LHC, corresponding to integrated luminosity of 17.3 fb-1 at ˇĚs = 7 and 8 TeV.
Ref: PRL 110, 081803 (2013)

For more information, please contact: Dr. Ken Park

PublisherDepartment of Physics
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