Abstract In this work, a series of silica glass photonic crystal fibers (PCFs) were designed through implementation numerical method [1] based on an experimental model that allows the calculation chromatic dispersion from two structural parameters PCFs. Then, PCFs fabricated by stretching structured preform using calculated preliminary design. Some characterization techniques implemented with a...

The evolution of particles, during the fabrication step particle-containing glass fibres, was investigated. aim this study to characterize quantitatively composition, size and shape distribution Mg-silicate particles within initial silica-based preform final fibre, these information being crucial better understand mechanisms involved drawing step. A combined experimental approach using Scanning...

In this work, we re-investigate the mass spectrum of ground state, first, second and third radial excited states diquark-antidiquark type fully-charm tetraquark with QCD sum rules plus Regge trajectories. We take account CMS ATLAS experimental data preform a self-consistent analysis, then try to make possible assignments $X(6600)$, $X(6900)$ $X(7300)$ in picture $J^{PC}=0^{++}$ or $1^{+-}$.

Resin transfer moulding (RTM) is a widely used process for manufacturing composite parts. It is currently gaining market shares compared to autoclave process in particular for high performance applications, such as aerospace, thanks to its higher versatility permitting the manufacturing of complex and high quality composite parts in fairly short cycle times. The major disadvantage of RTM remain...