Controllable dry adhesion based on two-photon polymerization and replication molding for space debris removal

Busche, Jan F.; Starke, Gereon; Knickmeier, Saskia; Dietzel, Andreas

doi:10.1016/j.mne.2020.100052

Cited by 21 publications

(18 citation statements)

References 37 publications

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“…The 2PPstructured surfaces serve as a master, which can be used to generate an impression in several minutes. This procedure can be repeated, in principle, multiple times because, 2PP structures are usually highly robust [53]. Therefore, multiple separated replicas can be fabricated from the impressions in one process step, and then each replica can be fixed on a base substrate to create larger structured surfaces.…”

Section: Application For Artificial Structural Colors With Angle-insensitive Optical Properties and Molding Of Biomimetic 2pp Structuresmentioning

confidence: 99%

Structural colors with angle-insensitive optical properties generated by Morpho-inspired 2PP structures

et al. 2020

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This paper describes how two-photon polymerization was used to generate biomimetic nanostructures with angle-insensitive coloration inspired by the blue butterflies of Morpho. Less angle dependence was achieved by engineering the structures with a certain degree of disorder, which delimited them from classical photonic crystals. Variations in the processing parameters enabled the color hue to be controlled. In this context, blue, green, yellow, and brown structures were demonstrated. Reflection spectra of the structures were simulated and studied experimentally in a broad range of incident angles. Additionally, a molding technique was performed as a potential scale-up strategy. The application of such biomimetic structures is discussed.

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Section: Application For Artificial Structural Colors With Angle-insensitive Optical Properties and Molding Of Biomimetic 2pp Structuresmentioning

confidence: 99%

Structural colors with angle-insensitive optical properties generated by Morpho-inspired 2PP structures

et al. 2020

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“…Those features correspond to nature-based topographies (lotus leaf, frog toes, and shark skin, respectively). Such and similar surface treatments can be achieved via MPL, as presented in Maddox et al paper [262,263].…”

Section: Current Applicationsmentioning

confidence: 95%

“…(i) -SEM images of anisotropic dry adhesive PDMS microstructures. Reprinted with permission from [263].…”

Section: Current Applicationsmentioning

confidence: 99%

Photopolymerization Mechanisms at a Spatio-temporally Ultra-confined Light

Skliutas¹,

Lebedevaite²,

Kabouraki³

et al. 2020

Preprint

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Ultrafast laser 3D lithography based on non-linear light-matter interactions, widely known as multi-photon lithography (MPL), offers unrivaled precision rapid prototyping and flexible additive manufacturing options. 3D printing equipment based on MPL are already commercially available, yet there is still no comprehensive understanding of factors determining spatial resolution, accuracy, fabrication throughput, repeatability, and standardized metrology methods for the accurate characterization of the produced 3D objects and their functionalities. The photoexcitation mechanisms, spatial-control or photo-modified volumes, and the variety of processable materials are topics actively investigated. The complexity of the research field is underlined by limited understanding and fragmented knowledge of light-excitation and material response. Research to date has only provided case-specific findings on photoexcitation, chemical modification, and material characterization of the experimental data. In this review, we aim to provide a consistent and comprehensive summary of the existing literature on photopolymerization mechanisms under highly confined spatial and temporal conditions, where, besides the excitation and cross-linking, parameters such as diffusion, temperature accumulation, and the finite amount of monomer molecules start to become of critical importance. Key parameters such as, photoexcitation, polymerization kinetics, and the properties of the additively manufactured materials at the nanoscale in 3D are examined, whereas, the perspectives for future research and as well as emerging applications are outlined.

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“…Each toe of the gecko presents a highly adaptive microstructure with hundreds of hairs called setae as depicted in Figure 6A), each exertig a van der Walls force onto components, allowing the gecko to carry its own body weight up vertical surfaces or hang upside down (Kim et al, 2008). This mechanism has been replicated by multiple companies in form of a reusable adhesive tape with different microstructures as shown in Figure 6B), and tested extensively for various applications and consumer needs (Brodoceanu et al, 2016;Alizadehyazdi et al, 2020;Busche et al, 2020;Cauligi et al, 2020;Sameoto et al, 2022). One of these tapes was even sent to the ISS in 2019 to test its adhesive capabilities under micro-gravity conditions (Parness, 2017).…”

Section: Existing Bio-inspired Debris Removal Conceptsmentioning

confidence: 99%

Biomimetics for innovative and future-oriented space applications - A review

Banken

Oeffner²

2023

Front. Space Technol.

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Nature benefits from a progressive evolution over millions of years, always adapting and finding individual solutions for common problems. Hence, a pool of diverse and efficient solutions exists that may be transferable to technical systems. Biomimetics or bio-inspiration has been used as a design approach for decades, revolutionizing products and processes throughout various industries. Thus, multiple examples can also be found in the space sector, since many characteristics found in biological organisms are also essential for space systems like response-stimuli adaptability, robustness and lightweight construction, autonomy and intelligence, energy efficiency, and self-repair or healing capabilities. This review focuses on biomimetics within the field of aerospace engineering and summarizes existing bio-inspired concepts such as drilling tools (wood wasp ovipositor drilling), telescopes (lobster eye optics), or gasping features (gecko feet adhesion capabilities) that have already been conceptualized, partially tested, and applied within the space sector. A multitude of biological models are introduced and how they may be applicable within the space environment. In particular, this review highlights potential bio-inspired concepts for dealing with the harsh environment of space as well as challenges encountered during rocket launches, space system operations and space exploration activities. Moreover, it covers well-known and new biomimetic concepts for space debris removal and on-orbit operations such as space-based energy production, servicing and repair, and manufacture and assembly. Afterwards, a summary of the challenges associated with biomimetic design is presented to transparently show the constraints and obstacles of transferring biological concepts to technical systems, which need to be overcome to achieve a successful application of a biomimetic design approach. Overall, the review highlights the benefits of a biomimetic design approach and stresses the advantage of biomimetics for technological development as it oftentimes offers an efficient and functional solution that does not sacrifice a system’s reliability or robustness. Nevertheless, it also underlines the difficulties of the biomimetic design approach and offers some suggestions in how to approach this method.

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Controllable dry adhesion based on two-photon polymerization and replication molding for space debris removal

Cited by 21 publications

References 37 publications

Structural colors with angle-insensitive optical properties generated by Morpho-inspired 2PP structures

Structural colors with angle-insensitive optical properties generated by Morpho-inspired 2PP structures

Photopolymerization Mechanisms at a Spatio-temporally Ultra-confined Light

Biomimetics for innovative and future-oriented space applications - A review

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