With the increasing demand for large-scale nano- and micropatterns in the field of digital displays, nano- and micropattern replication technology has become a research priority. In this study, a continuous ultraviolet (UV) roll nanoimprinting process using a pattern roll stamper for the replication of large-scale nano- and micropatterns was designed and constructed. Several flexible nano- and micropatterns with large areas were fabricated and analyzed as tests of this continuous UV imprinting process.

Mossbauer and x-ray diffraction measurements have been made on M,~xFe,(PyNO),(C10,)2, where M is Zn or Mg, for 0 < x s 1. It has been possible to reproduce the Mossbauer spectra reasonably well using a model in which the ferrous ions experience a small off-axial distortion from the nominal trigonal (C3J site symmetry. The Mossbauer results indicate that the proportion of Fe" ions in sites that are distorted from trigonal symmetry varies as a function of iron concentration in the Zn-Fe series but remains apparently invariant across the Mg-Fe series. The unit-cell volume of these compounds was found to exhibit a strong non-linear dependence on composition for the Zn-Fe system, whereas a roughly linear relation was found for the Mg-Fe system. Furthermore, the behaviour of the unit-cell volume appears to be correlated with the composition-dependent changes in the proportion of ferrous ions distorted from C3, site symmetry.

Recently, carbon emissions and global warming have become major issues, and efforts are being made to develop sustainable manufacturing systems and improve product lifespans. Waste and greenhouse gases created during manufacturing can be minimized using sustainable processes and by proactively considering the environment during product design and fabrication. Miniaturization of optical parts is key in the maturing mobile device market; the demand for ultra-small light-emitting diodes (LEDs) and aspherical lenses is growing rapidly. Small aspherical lenses are created using injection molding, wafer-level optics, and glass molding. Traditionally, injection molding was associated with excellent transferability, and is suitable for mass production. However, considerable energy is required to create high internal cavity pressures and high temperatures. Furthermore, a great deal of waste such as runners is created, and the lenses are unstable at high temperature. We sought to resolve these issues by using sustainable manufacturing concepts in the design stage. To this end, we used ultraviolet (UV)-curable resin to mold high-precision lenses exhibiting excellent heat-resistance. We proposed a methodology to mold ultra-small optical lenses using UV-curable resin to improve material and energy efficiency compared with the traditional injection molding process. We employed a prognostics to predict the life cycle of the system and improve sustainability.