Angle-resolved light scattering has been used for decades to quantify the surface roughness of optical components. However, because this technique is affected by the contribution of both interfaces of the sample, it cannot be applied to transparent substrates. We show how to overcome this issue and apply these principles to the characterization of superpolished samples.
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http://dx.doi.org/10.1364/ao.45.001402 | DOI Listing |
Materials (Basel)
January 2025
CNR-IOM-Istituto Officina dei Materiali, Consiglio Nazionale delle Ricerche, 34149 Trieste, Italy.
Hybrid systems consisting of highly transparent channels of low-dimensional semiconductors between superconducting elements allow the formation of quantum electronic circuits. Therefore, they are among the novel material platforms that could pave the way for scalable quantum computation. To this aim, InAs two-dimensional electron gases are among the ideal semiconductor systems due to their vanishing Schottky barrier; however, their exploitation is limited by the unavailability of commercial lattice-matched substrates.
View Article and Find Full Text PDFMicromachines (Basel)
January 2025
Nanoscale Glasstec GmbH (NaGt), 34132 Kassel, Germany.
This paper reviews and compares electrostatically actuated MEMS (micro-electro-mechanical system) arrays for light modulation and light steering in which transmission through the substrate is required. A comprehensive comparison of the technical achievements of micromirror arrays and microshutter arrays is provided. The main focus of this paper is MEMS micromirror arrays for smart glass in building windows and façades.
View Article and Find Full Text PDFMicromachines (Basel)
December 2024
Department of Electrical Engineering, Chinese Culture University, Taipei 11114, Taiwan.
Based on additive manufacturing via photopolymerization, this study combines polymer-dispersed liquid crystal (PDLC) technology with 3D printing technology to produce tunable micro-optical components with switchable diffraction or focusing characteristics. The diffraction grating and Fresnel zone plate are the research targets. Their structures are designed and simulated to achieve expected optical functions.
View Article and Find Full Text PDFLangmuir
January 2025
Center of Eco-Material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
The adhesion of raindrops on car rearview mirrors poses a significant threat to traffic safety due to the resulting blurred vision. Transparent superhydrophobic coatings have emerged as a potential solution to this problem. However, the development of transparent superhydrophobic coatings is often hampered by complex preparation procedures, high costs, and limited substrate compatibility, rendering them unsuitable for practical applications.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Department of Chemical and Biological Engineering, Sookmyung Women's University, Seoul 04310, Korea.
Advancements in printing techniques are essential for fabricating next-generation displays. Lead halide perovskites demonstrate great potential as light emitters of solution-processed light-emitting diodes (LEDs). In particular, the perovskite/polymer composite emitters exhibit exceptional luminescent characteristics, mechanical flexibility, and environmental stability due to the improved film morphologies and defect passivation achieved through the introduction of polymer additives.
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