2,777 research outputs found
Enhanced lifetime of air plastron in partition-ridged superhydrophobic surface under laminar flow
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Silver nanowire flexible, transparent, conductive film using plasticized polymer interlayer for low temperature process
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Plasticized polymer interlayer for low temperature fabrication of high quality silver nanowire-based flexible trnasparent and conductive film
No full textDirect Fabrication of Micro/Nano-Patterned Surfaces by Vertical-Directional Photofluidization of Azobenzene Materials
No full textAnisotropic movement of azobenzene materials (i.e., azobenzene molecules incorporated in polymer, glass, or supramolecules) has provided significant opportunities for the fabrication of micro/nanoarchitectures. The examples include circular holes, line gaps, ellipsoidal holes, and nanofunnels. However, all of the previous studies have only focused on the lateral directional movement for the structural shaping of azobenzene materials. Herein, we propose structural shaping based on a vertical directional movement of azobenzene materials. To do this, light with oblique incidence, containing normal direction light polarization, was illuminated onto azobenzene materials film contact with patterned elastomeric molds (i.e., PDMS) so that the resulting vertical directional movement of azobenzene materials fills in the cavities of the molds and results in pattern formation. As a result, a range of patterns with sizes of features from micro- to sub-100 nm scale was successfully fabricated in a large area (few cm(2)), and the structural height was deterministically controlled by simply adjusting irradiation time. In addition to the notable capability of fabricating the single-scale structures, the technique provides a facile way to fabricate complex hierarchical multiscale structures, ensuring its versatility and wide applicability to various applications. As a selected exemplary application of the multiscale structures, a superhydrophobic surface has been successfully demonstrated.
Progress and Prospects of Nanoscale Emitter Technology for AR/VR Displays
No full textAugmented reality (AR) and virtual reality (VR) are emerging interactive technologies that realize the "metaverse," leading to a totally new digital interactive experience in daily life in various aspects. In order to provide users with a more immersive experience, displays for AR/VR have rapidly evolved to achieve high resolutions and a large color gamut on small panels. Recently, nanoscale light emitters such as quantum dots (QDs) and metal halide perovskites (MHPs) with high photoluminescence quantum efficiency and color purity levels have garnered much attention as color conversion materials in AR/VR displays. However, the low material stability and the absence of a high-resolution patterning process that does not impair the optical properties of nanoscale emitters act as obstacles preventing the realization of high-resolution AR/VR displays. Here, the state-of-the-art technologies constituting current AR/VR devices are reviewed from an industrial point of view and the recent progress in QD and MHP emitter technologies are discussed, including their basic structural properties, synthesis strategies to enhance the stability, advanced patterning technologies, down-conversion and light-emitting diode applications. Based on the review, the authors' perspective on future research directions of nanoscale emitters for next-generation AR/VR displays is presented.N
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