Fabrication and characterization of polymeric optical by plasma fluorination process

Effect of solvents on the morphology of PMMA films fabricated by spin-coating

“…Therefore, just varying plasma time over PMMA films, low roughness can be obtained. Giacon et al [3] showed that thickness for the fluorinated film around 0.57 μm was suitable for cladding of PMMA with core of 14 μm. While Padilha et al [20] observed 0.61 μm of fluorinated polymer at 0.7 torr and 20 min.…”

“…Previous works showed PMMA films of 14 μm as core of planar polymeric waveguides [3] . Thickeness around 10 μm improving the connect in optical fiber, waveguides and optical interconect [3] .…”

“…It can substitute glass in several hard-use products such as antiriot vehicles, and it can be used in different technological applications, such as optical devices, optical lenses, and in gratings or waveguides [2][3][4] . In the field of optics, PMMA has been studied due to the intrinsic versatility of its molecular structure, which allows for enhanced refractive index modeling for core material, and also for the ease of manufacturing process and patterning capability [5,6] .…”

“…Thickeness around 10 μm improving the connect in optical fiber, waveguides and optical interconect [3] . Then, the present work we attempt to compare the influence of spin-coating speeds and the concentration of PMMA dissolved in different solvents.…”

Síntese total de terpenos e meroterpenos

“…Por outro lado, os menores valores de índice de refração, seja dos nanocompósitos de PMMA/nanosílica, como os de PMMA/nanosílica-f oferecem uma potencial aplicação destes materiais na fabricação de guias de ondas ou de fibras ópticas poliméricas. Os materiais para estes dispositivos ópticos devem ter núcleo com índice de refração superior ao da casca ou revestimento, para que a luz possa ser transmitida através do núcleo pelo princípio de reflexão interna total (OTANI et al, 2009;GIACON et al, 2015;LI, 2016). As diferenças entre os índices de refração do núcleo e da casca podem ser no mínimo até a terceira casa decimal, resultado obtido por todos os nanocompósitos de PMMA/nanosílica e PMMA/nanosílica-f sintetizados.…”