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Entertainment lighting control network standardization to support VLC services
Sang-Kyu Lim,Ruling, Karl,Insu Kim,Il Soon Jang IEEE 2013 IEEE communications magazine Vol.51 No.12
<P>VLC technology is receiving increasing attention in research and product development these days because high lumen/watt LEDs are becoming the dominant sources for artificial lighting. Successful VLC data transmission from luminaires requires that the data first be moved to the luminaires over a backbone network. This article addresses the lighting control network as a backbone for VLC services and describes a standards-drafting project, designated BSR E1.45, for entertainment lighting control to support the transmission of data for VLC from luminaires. E1.45 specifies a data frame format that can coexist with ANSI E1.11 messages on lighting control network, and thus deliver VLC data to luminaires for transmission from those luminaires.</P>
COLD NEUTRON SCATTERING STUDIES OF FRUSTRATED PYROCHLORE ANTIFERROMAGNETS
GARDNER, J.S.,RULE, K.C.,RUFF, J.P.C.,CLANCY, J.P.,GAULIN, B.D. Korean Nuclear Society 2011 Nuclear Engineering and Technology Vol.43 No.1
In this paper we review the neutron scattering work performed on 3 different antiferromagnetic pyrochlores which reveal how the character of the magnetic interactions plays a major role on the eventual outcome of the magnetic ground state. $Tb_2Ti_2O_7$, $Er_2Ti_2O_7$ and $Y_2Mo_2O_7$ have all been extensively studied over the past 15 years and are known to display, respectively, spin liquid, long range ordered and glassy ground states. Although detailed experiments have been performed on these compounds, and much is known about their low temperature properties, a detailed theoretical understanding of their ground states remains elusive.
COLD NEUTRON SCATTERING STUDIES OF FRUSTRATEDPYROCHLORE ANTIFERROMAGNETS
J. S. GARDNER,K. C. RULE,J. P. C. RUFF,J. P. CLANCY,B. D. GAULIN 한국원자력학회 2011 Nuclear Engineering and Technology Vol.43 No.1
In this paper we review the neutron scattering work performed on 3 different antiferromagnetic pyrochlores which revealhow the character of the magnetic interactions plays a major role on the eventual outcome of the magnetic ground state.Tb2Ti2O7, Er2Ti2O7and Y2Mo2O7have all been extensively studied over the past 15 years and are known to display,respectively, spin liquid, long range ordered and glassy ground states. Although detailed experiments have been performedon these compounds, and much is known about their low temperature properties, a detailed theoretical understanding of theirground states remains elusive.
Park, Kisoo,Oh, Joosung,Leiner, Jonathan C.,Jeong, Jaehong,Rule, Kirrily C.,Le, Manh Duc,Park, Je-Geun American Physical Society 2016 Physical Review B Vol.94 No.10
<P>CuCrO2 is a manifestation of a two-dimensional triangular antiferromagnet which exhibits an incommensurate noncollinear magnetic structure similar to a classical 120 degrees. ordering. Using the inelastic neutron scattering technique, direct evidence of a magnon-phonon coupling in CuCrO2 is revealed via the mixed magnon-phonon character of the excitation mode at 12.5 meV as well as a minimum at the zone boundary. A simple model Hamiltonian that incorporates an exchange-striction type magnon-phonon coupling accurately reproduces the observed features. Also, continuum excitations originating from the interaction between quasiparticles are observed with strong intensity at the zone boundary. These features of the magnetic excitations are key to an understanding of the emergent excitations in noncollinear antiferromagnetic compounds.</P>