Syntheses and characterizations of high refractive index and low birefringence polyimides containing spirobifluorene in the side chain
Sign Up to like & getrecommendations! Published in 2017 at "Polymer"
DOI: 10.1016/j.polymer.2017.04.020
Abstract: Abstract Two new diamine monomers having a spirobifluorene structure were synthesized through four steps, and polymerized with three different dianhydrides (PMDA, CBDA and 6FDA) to obtain six polyimides with spirobifluorene structure in the side chain.… read more here.
Keywords: high refractive; side chain; birefringence polyimides; low birefringence ... See more keywords
An observation of umbilical coiling index in a low risk population in Nigeria
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Perinatal Medicine"
DOI: 10.1515/jpm-2017-0170
Abstract: Abstract Objectives: The umbilical coiling index (UCI) is one of cord parameters for foetal assessment with limited studies in our environment. With recent advances in its evaluation, its significance, pattern, abnormalities and correlates need to… read more here.
Keywords: observation umbilical; umbilical coiling; coiling index; population ... See more keywords
Polarization-independent isotropic metasurface with high refractive index, low reflectance, and high transmittance in the 0.3-THz band
Sign Up to like & getrecommendations! Published in 2023 at "Nanophotonics"
DOI: 10.1515/nanoph-2022-0788
Abstract: Abstract Metasurfaces substituted for naturally occurring materials make it possible to develop flat optics manipulating terahertz waves. However, the control of unprecedented material properties with metasurfaces frequently produces anisotropic material properties and has yet to… read more here.
Keywords: high refractive; refractive index; low reflectance; reflectance high ... See more keywords