Split ring resonator

Other frequently used resonators are dielectric cavities and loop-gap resonators (also called split-ring resonators) [12]. A dielectric cavity contains a diamagnetic material that serves as a dielectric to raise the effective filling factor by concentratmg the B field over the volume of the sample. Hollow cylinders machmed from Ilised quartz or sapphire that host the sample along the cylindrical axis are conunonly used. 

R. Marques, J. Martel, F. Mesa, and F. Medina, Left-handed media simulation and transmission of EM waves in subwavelength split-ring-resonator-loaded metallic waveguides, Phys. Rev. Lett., vol. 89, paper 183901, 2002. 

For example, LC-organized split ring resonators is presented in Fig. 4.17 [113], where GNPs were trapped in disclination lines surroimding micron sized silica beads that were organized into an array by the nematic continuum phase. There were other developed interesting types of self-assembled nanostructures and it has been claimed that the next frontier toward commercialization was bringing the fabrication cost down with nanochemistry-based bottom-up self-assembly approaches [114]. 

It is pertinent to mention that a richer variety of K-G equation was also derived in other important nonlinear optical materials such as split-ring-resonator based metamaterials, where DB pulse has been observed [64,... 

Here, we present the data for two-phonon bound state (TPBS) or QB state in lithium tantalate system. It is pertinent to mention that in our recent work on another important nonlinear optieal material, sueh as split-ring-resonator (SRR) based meta-material, both K-G equation and nonlinear Sehrodinger equation (NLSE) show dark and bright solitons, and also dark and bright breathers. However, K-G equation in addition shows breather pulses, whereas NLSE does not show sueh pulses [64]. This work could also be relevant for an important nonlinear optieal material, sueh as lithium tantalate in the future directions of study, where K-G equation seems to show interesting behavior. 

The salts of some enamines crystallize as hydrates. In such cases it is possible that they are derived from either the tautomeric carbinolamine or the amino ketone forms. Amino ketone salts (93) ( = 5, 11) can serve as examples. The proton resonance spectra of 93 show that these salts exist in the open-chain forms in trifluoroacetic acid solution, rather than in the ring-closed forms (94, n = 5, 11). The spectrum of the 6-methylamino-l-phenylhexanone cation shows a multiplet at about 2.15 ppm for phenyl, a triplet for the N-methyl centered at 7.0 ppm and overlapped by signals for the methylene protons at about 8.2 ppm. The spectrum of 93 ( = 11) was similar. These assignments were confirmed by determination of the spectrum in deuterium oxide. Here the N-methyl group of 93 showed a sharp singlet at about 7.4 ppm since the splitting in —NDjMe was much reduced from that of the undeuterated compound. 

A stable lO-As-3 species (235) underwent a ready reaction with 144 to give adduct 236, which exhibited a single ferf-butyl and ring-proton resonance in the NMR at room temperature and showed a single resonance at 8 -54.0 in the NMR (85JA1089). Tire low temperature and NMR showed a split of the room temperature resonances suggestive of the frozen structure of 236. 

H1 NMR spectroscopy was found to be unsuitable for head-group analysis of HSi-PaM-eSt. The resonance associated with the Si-H proton at the head-group is broadened by multiple splitting and the resonances of the aromatic protons of the initiator fragment are buried in the aromatic proton resonances of phenyl rings of the aMeSt repeating units. 

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