Numerical analysis of high-index nanocomposite encapsulant for light-emitting diodes

We used two-dimensional Finte-Difference-Time-Domain (FDTD) software to study the transition behavior of nano-particles from scatterers to an optically uniform medium. We measured the transmission efficiency of the dipole source, which is located in the high refractive index medium(index=2.00) and encapsulated by low index resin(index=1.41). In an effort to compose index-matched resin and to reduce internal reflection, high-index nano-particles are added to low-index resin in simulations of various sizes and densities. As the size of the nano-particles and the average spacing between particles are reduced to 0.02 lambda and 0.07 lambda respectively, the transmission efficiency improves two-fold compared to that without nanoparticles. The numerical results can be used to understand the optical behavior of nano-particles and to improve the extraction efficiency of high brightness light-emitting-diodes(LEDs), through the use of nano-composite encapsulant.Comment: 9 pages, 5 jpg figure

Agency interaction in the implementation of innovation policies: A critical assessment of national programmes for supporting collaboration between small firm and University of South Korea.

This thesis addressed gaps between policy expectation and policy actions through investigating local agency interaction in the policy delivery system. This thesis particularly focused on regional innovation policies, specifically industry-academia collaboration (lAC) policies in South Korea, a politically centralised country in which an attempt to enhance the role and interaction of local agencies fi:om a perspective of a bottom-up approach was emerging. By utilising an analytical framework underpinned by agency-structure relations, implementation models anc the notion of demand-side coherence, this thesis attempted to gain a better understanding of the behavioural differences between diverse agencies in the policy implementation process and the influence of policy delivery systems on their actions

Agency interaction in the implementation of innovation policies: A critical assessment of national programmes for supporting collaboration between small firm and University of South Korea.

This thesis addressed gaps between policy expectation and policy actions through investigating local agency interaction in the policy delivery system. This thesis particularly focused on regional innovation policies, specifically industry-academia collaboration (lAC) policies in South Korea, a politically centralised country in which an attempt to enhance the role and interaction of local agencies fi:om a perspective of a bottom-up approach was emerging. By utilising an analytical framework underpinned by agency-structure relations, implementation models anc the notion of demand-side coherence, this thesis attempted to gain a better understanding of the behavioural differences between diverse agencies in the policy implementation process and the influence of policy delivery systems on their actions

Triflumizole

In the title compound {systematic name: 4-chloro-N-[1-(1H-imidazol-1-yl)-2-propoxyethyl­idene]-2-(trifluoro­meth­yl)aniline}, C15H15ClF3N3O, the dihedral angle between the aniline and imidazole ring planes is 81.80 (4)°. In the crystal structure, weak inter­molecular C—H⋯X (X = N, O or F) hydrogen bonds and C—H⋯π inter­actions help to consolidate the packing

Reversible photoluminescence switch: A stair-step Cu4I4 coordination polymer based on a dithioether ligand

AbstractA two-dimensional network stair-step Cu4I4 coordination polymer (1) based on 1,4-bis((methylthio)propanoyl)piperazine was prepared. No emission was observed from 1 (off state), while a heated sample (2) of 1 emitted a strong green light (on state). Conversion between 1 and 2 was reversible upon removal of acetonitrile or exposure of 2 to acetonitrile

Double-Layer Buffer Template to Grow Commensurate Epitaxial BaBiO3 Thin Films

We propose a BaCeO3/BaZrO3 double-layer buffer template, grown on a SrTiO3 substrate, for epitaxial growth of a target oxide film with large lattice constants of over 4.1 . Lattice mismatch from the substrate was mostly accommodated for by a BaZrO3 arbitrating layer. Having an ideal in-plane lattice structure, BaCeO3 served as the main-buffer to grow the target material. We demonstrated commensurate epitaxy of BaBiO3 (BBO,a = 4.371 ) utilizing the new buffer template. Our results can be applied to heteroepitaxy and strain engineering of novel oxide materials of sizable lattice constants. © Author(s) 20161421sciescopu

Phyllo-poly[[μ2-1,4-bis­(cyclo­hexyl­sulfanylmeth­yl)benzene-κ2 S:S′](μ2-nitrato-κ2 O:O′)silver(I)]

The title compound, [Ag(NO3)(C20H30S2)]n, was synthesized by the reaction of silver nitrate and 1,4-bis­(cyclo­hexyl­thio­meth­yl)benzene (bctmb) in acetonitrile. The coordination polymer exhibits a two-dimensional layer structure. The layers are wave-like and parallel to the crystallographic ac plane; AgI ions are linked by the bctmb ligands and nitrate anions along the crystallographic a and c directions, respectively. In addition, the crystal structure is stabilized by C—H⋯O hydrogen bonds

Methidathion: S-(5-meth­oxy-2-oxo-2,3-dihydro-1,3,4-thia­diazol-3-yl)methyl O,O-dimethyl phospho­rodithio­ate

The title compound, C6H11N2O4PS3, crystallizes with two independent mol­ecules in the asymmetric unit. The dihedral angles between the thia­diazole ring planes and the PS2 planes of the phospho­rodithio­ate group are 86.51 (5) and 56.33 (5)° in the two mol­ecules. In the crystal, weak inter­molecular S⋯S [3.570 (8) Å] inter­actions and C—H⋯O and C—H⋯N hydrogen bonds contribute to the stabilization of the packing

Pirimicarb: 2-dimethylamino-5,6-dimethylpyrimidin-4-yl dimethyl­carbamate

In the title compound, C11H18N4O2 (systematic name: 2-dimethyl­amino-5,6-dimethyl­pyrimidin-4-yl N,N-dimethyl­carb­amate), the pyrimidine ring and dimethyl­amino group are almost in the same plane, making a dihedral angle of 1.6 (1)°. The dihedral angle between the mean plane of the pyrimidine ring and that of the dimethyl­carbamate group is 83.42 (5)°. In the crystal structure, inter­molecular C—H⋯O hydrogen bonds contribute to the stabilization of the packing