Antireflection effects at nanostructured material interfaces and the suppression of thin-film interference

Yang, Qiaoyin; Zhang, Xu A.; Bagal, Abhijeet; Guo, Wei; Chang, Chih‐Hao

doi:10.1088/0957-4484/24/23/235202

Cited by 68 publications

(30 citation statements)

References 35 publications

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“…Fabrication of antireflective structures that can suppress reflection of light over a broad spectral range is of great interest. Reducing reflective losses and improving transmission of light are crucial for improving the performance of optical and optoelectronic devices …”

Section: Naturally Occurring Materialsmentioning

confidence: 99%

Nano/Micro‐Manufacturing of Bioinspired Materials: a Review of Methods to Mimic Natural Structures

2016

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Through billions of years of evolution and natural selection, biological systems have developed strategies to achieve advantageous unification between structure and bulk properties. The discovery of these fascinating properties and phenomena has triggered increasing interest in identifying characteristics of biological materials, through modern characterization and modeling techniques. In an effort to produce better engineered materials, scientists and engineers have developed new methods and approaches to construct artificial advanced materials that resemble natural architecture and function. A brief review of typical naturally occurring materials is presented here, with a focus on chemical composition, nano-structure, and architecture. The critical mechanisms underlying their properties are summarized, with a particular emphasis on the role of material architecture. A review of recent progress on the nano/micro-manufacturing of bio-inspired hybrid materials is then presented in detail. In this case, the focus is on nacre and bone-inspired structural materials, petals and gecko foot-inspired adhesive films, lotus and mosquito eye inspired superhydrophobic materials, brittlestar and Morpho butterfly-inspired photonic structured coatings. Finally, some applications, current challenges and future directions with regard to manufacturing bio-inspired hybrid materials are provided.

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Section: Naturally Occurring Materialsmentioning

confidence: 99%

Nano/Micro‐Manufacturing of Bioinspired Materials: a Review of Methods to Mimic Natural Structures

2016

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“…The inset of Figure 5d depicts the scheme of the light attenuation of PLZT thin films, and the increased reflectance can be mainly attributed to the decrease of light dissipation from surface scattering as a function of the surface roughness [39]. Commonly, the fringe can appear in the reflectance spectra for the epitaxial thin film due to the interference oscillation resulted from the phase retardation between the reflected light beams at the film-substrate interface and those at the film surface [40]. However, throughout the wavelength, the interference oscillation was not observed for any samples, which could be due to the ultra-thin thickness of the synthesized thin films in contrast with that of MgO.…”

Section: Resultsmentioning

confidence: 99%

Ultra Uniform Pb0.865La0.09(Zr0.65Ti0.35)O3 Thin Films with Tunable Optical Properties Fabricated via Pulsed Laser Deposition

Jiang

Huang

et al. 2018

Materials

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Ferroelectric thin films have been utilized in a wide range of electronic and optical applications, in which their morphologies and properties can be inherently tuned by a qualitative control during growth. In this work, we demonstrate the evolution of the Pb0.865La0.09(Zr0.65Ti0.35)O3 (PLZT) thin films on MgO (200) with high uniformity and optimized optical property via the controls of the deposition temperatures and oxygen pressures. The perovskite phase can only be obtained at the deposition temperature above 700 °C and oxygen pressure over 50 Pa due to the improved crystallinity. Meanwhile, the surface morphologies gradually become smooth and compact owing to spontaneously increased nucleation sites with the elevated temperatures, and the crystallization of PLZT thin films also sensitively respond to the oxygen vacancies with the variation of oxygen pressures. Correspondingly, the refractive indices gradually develop with variations of the deposition temperatures and oxygen pressures resulted from the various slight loss, and the extinction coefficient for each sample is similarly near to zero due to the relatively smooth morphology. The resulting PLZT thin films exhibit the ferroelectricity, and the dielectric constant sensitively varies as a function of electric filed, which can be potentially applied in the electronic and optical applications.

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“…This ability improves night vision and is critical for moths to escape predators. Nanostructured moth-eye arrays are optically excellent for reducing reflections and used for applications such as glazing the skyscrapers and silicon solar cells [30,31].…”

Section: Biomimetic Building Materials and Techniques For Façade Applmentioning

confidence: 99%

Biomimetic Facade Applications for a More Sustainable Future

Tokuç¹,

Özkaban²,

Andiç‐Çakır³

2018

Interdisciplinary Expansions in Engineering and Design With the Power of Biomimicry

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Mankind has often taken inspiration from the nature to solve problems since nature has sophisticated processes, refined for thousands of years. While manmade systems are unsustainable, natural processes embody sustainability principles; therefore, there are many things to learn from nature in order to solve design problems and create a more sustainable future. This is the promise of a biomimetic design approach. Another design approach is biodesign, and it also involves utilizing natural elements inside the design. The building façade is a problematic research area since it is at the intersection between living spaces and natural environment; thus it faces many problems especially regarding energy-air-water transition between indoors and outdoors. Application of key sustainability concepts in architecture such as energy requirements, form and structure, and sustainability considerations can be enhanced by learning from natural processes. This chapter looks at cutting-edge design principles, materials, and designs in building façades through the lens of biomimetics and biodesign. First, the design principles and then the materials and some cases are explained. The concepts of biomimicry and biodesign are in harmony with the concept of sustainability; however, to reach sustainable façade solutions, the sustainability principles should be at the core of the design problem definition. paradigm shifts. Biomimicry is a relatively new term, yet its connotations have been part of architecture for millennia, especially in form generation and imitating structural systems. While our interpretation for the earliest works is mostly conjecture, the written works relate the architectural styles of art nouveau, streamline design, anthropomorphism, zoomorphism, biomorphism, organic design, and biologically inspired design as precursors to biomimetics, biomimesis, or bionic [1]. While some designers and researchers interpret biomimicry as an all-encompassing approach to learn from nature (such as the biomimicry institute), others argue it should only be used to identify mimicking biological processes, and other phenomena should be called by different names. These include biophilia (love of nature) for taking inspiration from natural forms [2], biomimesis for imitation of natural models and systems, and geomimicry for utilizing geological processes instead of biological ones.Biomimetic Facade Applications for a More Sustainable Future http://dx.doi.org/10.5772/intechopen.73021 95

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Antireflection effects at nanostructured material interfaces and the suppression of thin-film interference

Cited by 68 publications

References 35 publications

Nano/Micro‐Manufacturing of Bioinspired Materials: a Review of Methods to Mimic Natural Structures

Nano/Micro‐Manufacturing of Bioinspired Materials: a Review of Methods to Mimic Natural Structures

Ultra Uniform Pb0.865La0.09(Zr0.65Ti0.35)O3 Thin Films with Tunable Optical Properties Fabricated via Pulsed Laser Deposition

Biomimetic Facade Applications for a More Sustainable Future

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