نتایج جستجو برای: pentagon heptagon pair defect
تعداد نتایج: 213745 فیلتر نتایج به سال:
We construct a smooth family of Hamiltonian systems, together with a family of group symmetries and momentum maps, for the dynamics of point vortices on surfaces parametrized by the curvature of the surface. Equivariant bifurcations in this family are characterized, whence the stability of the Thomson heptagon is deduced without recourse to the Birkhoff normal form, which has hitherto been a ne...
Aggregation-induced emission of [3]cumulenes functionalized with heptagon-containing polyphenylenes.
Turning on the fluorescence of [3]cumulenes: we report the luminescence at room temperature upon aggregation of [3]cumulenes functionalized with propeller-like heptagon-containing polyphenylenes. These endgroups turn on the emission of a [3]cumulene by steric protection and restriction of their intramolecular rotations in the aggregates.
This year’s AGI took place in Arlington Virginia at the Crowne Plaza Hotel, just across the river from Washington D.C. and a stone’s throw from the Pentagon. This was only the second year for this conference, but even so it boasted at least 100 participants. The attendees represented a broad spectrum of backgrounds, from academic researchers to industry professionals to interested laymen. AGI s...
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