Development of hard, anti-reflective coating for mid wave infrared region

Ozhan, A.E.S.; Hacaloğlu, Tuğçe; Kaftanoğlu, Bilgin

doi:10.1016/j.infrared.2021.103910

Cited by 7 publications

(6 citation statements)

References 9 publications

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“…Among them, boron nitride has demonstrated good transmission properties in a large wavelength range from 0.5 to 6.5

\umu \text{m}

, making it suitable for protecting optical surfaces, particularly in the mid‐infrared region. [ 20,99,112 ]…”

Section: Methodsmentioning

confidence: 99%

“…The limitations observed in this study and other works focusing on multi-layer structures are not uncommon. [99,100] Achieving both excellent optical and mechanical performance on multifunctional surfaces remains a complex challenge.…”

Section: Hard and Transparent Materials For Robust Multifuncional Sub...mentioning

confidence: 99%

“…Materials like calcium fluoride (CaF 2 ), magnesium fluoride (MgF 2 ), barium fluoride (BaF 2 ), and thorium fluoride (ThF 4 ) are commonly used for optical applications due to their wide transmission wavelength range, covering the ultraviolet to the midinfrared region. However, their mechanical properties may limit Boron nitride [ 99,112,113] Calcium fluoride [ 114,115] Gallium oxide [122][123][124][125][126][127] Potassium bromide [ 139] Polydimethyl siloxane [ 141] PDMS 1.42 at 700 nm 0.39-0.78 Soft -0.002 Hydrophobic Silicon [ 128] Silicon carbide [ 142,143] Yttrium oxide [ 147,148] Zinc selenide [ 128,150] Zinc sulfide [ 151,152] their use as hard coatings. MgF 2 [135] and CaF 2 [114,115] may still find application for protecting optical surfaces, but their hardness is dependent on the deposition technique.…”

Section: Fluoridesmentioning

confidence: 99%

“…Carbide-based materials are attractive for hard coatings due to their high hardness. B 4 C [99] and silicon carbide (SiC) [142,143] have shown significant optical and mechanical properties. These materials offer a low refractive index, wide transmission range, high hardness, and Young's modulus, making them suitable for protecting structured optical surfaces.…”

Section: Carbidesmentioning

confidence: 99%

“…The study conducted by Ozhan et al. [ 99 ] in 2021, where they deposited boron carbide (B 4 C) and boron nitride (BN) thin films on a silicon (Si) substrate, highlights the potential of using hard materials to enhance the mechanical properties of surfaces. The deposited single layers of BN and B 4 C improved the transmission of the Si surface, but their anti‐reflective performance was limited to the mid‐infrared region.…”

Section: Hard and Transparent Materials For Robust Multifuncional Sub...mentioning

confidence: 99%

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A Review on Potential Mechanically Resistant Materials for Optical Multifunctional Surfaces: Bioinspired Surfaces with Advanced Properties

Sarieddine,

Kadiri,

Guelorget

et al. 2023

Adv Materials Inter

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Mimicking naturethrough nanostructuring allows the creation of multifunctional surfaces withremarkable properties, such as anti‐reflectivity, high optical transmittanceand controlled wettability, enabling anti‐icing or anti‐fogging behaviors. These multifunctionalsurfaces have gained significant interest in civil and military domains. However,integrating them into real‐life applications faces challenges related tocost, high‐throughput large‐scale compatible nanofabrication techniques, andtheir mechanical resistance. While sub‐wavelength patterning improves the optical performance,it often comes at the cost of compromising the mechanical resistance. As opticalperformance improves, mechanical resistance tends to deteriorate, and viceversa. To address this challenge, taking inspiration from the lotus leafstructure, where patterns are covered by a thin 2D wax film, covering thepatterns of structured surfaces with a protective layer can be a viablesolution. This protective layer should enhance the mechanical resistance of thesurface without compromising its multifunctional capabilities. This reviewhighlights the most suitable materials that can be employed as protectivecoatings and their potential to enhance the resistance of structured surfaces.The fundamental concept behind the creation of multifunctional optical surfacesis discussed, followed by a comprehensive examination of mechanical tests thatcan be utilized to characterize their mechanical behavior. This review aims topave the way for the development of durable multifunctional optical surfaces,making them more amenable to industrial applications.

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“…Among them, boron nitride has demonstrated good transmission properties in a large wavelength range from 0.5 to 6.5

\umu \text{m}

, making it suitable for protecting optical surfaces, particularly in the mid‐infrared region. [ 20,99,112 ]…”

Section: Methodsmentioning

confidence: 99%

Section: Hard and Transparent Materials For Robust Multifuncional Sub...mentioning

confidence: 99%

Section: Fluoridesmentioning

confidence: 99%

Section: Carbidesmentioning

confidence: 99%

Section: Hard and Transparent Materials For Robust Multifuncional Sub...mentioning

confidence: 99%

See 3 more Smart Citations

A Review on Potential Mechanically Resistant Materials for Optical Multifunctional Surfaces: Bioinspired Surfaces with Advanced Properties

Sarieddine,

Kadiri,

Guelorget

et al. 2023

Adv Materials Inter

View full text Add to dashboard Cite

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Progress in infrared transparencies under opto electro thermo and mechanical environments

Xu,

Guo,

Ralchenko

et al. 2023

Surf. Sci. Tech.

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In recent years, there has been a growing interest and research focus on infrared optical thin films as essential components in infrared optical systems. In practical applications, extreme environmental factors such as aerodynamic heating and mechanical stresses, electromagnetic interferences, laser interferences, sand erosions, and rain erosions all lead to issues including cracking, wrinkling, and delaminations of infrared thin films. Extreme application environment imposes stringent requirements on functional films, necessitating high surface hardness, stability, and adhesion. Additionally, for multispectral optical transmissions, infrared optical thin films are expected to exhibit high transmittance in the visible and far-infrared wavelength bands while possessing tunability and optical anti-reflection properties in specific wavelength ranges. Electromagnetic shielding requires superior electrical performance, while resisting laser interference demands rapid phase change capabilities. This paper focuses on current research progresses in infrared optical thin films under extreme conditions such as opto, electro, thermos and mechanical environments. Table of Contents Graphic gives detailed outline. Future opportunities and challenges are also highlighted. Graphical Abstract

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