3D optomechanical metamaterials

Münchinger, Alexander; Hsu, Li‐Yun; Fürniß, Franziska; Blasco, Eva; Wegener, Martin

doi:10.1016/j.mattod.2022.08.020

Cited by 24 publications

(21 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Stimuli-Responsive Materials: Stimuli-responsive materials (SRMs) are materials that can vary their configuration over time upon external stimuli, such as temperature, [139][140][141] humidity, [142,143] light, [144][145][146] electricity, [147,148] and magnetic field. [149,150] Recently, SRMs have been introduced to TPL, [114,[151][152][153][154][155][156][157][158][159] and structures with micron and nanoscale feature sizes have been achieved.…”

Section: Acrylatesmentioning

confidence: 99%

Two‐Photon Polymerization Lithography for Optics and Photonics: Fundamentals, Materials, Technologies, and Applications

Wang

Zhang

Ladika

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

The rapid development of additive manufacturing has fueled a revolution in various research fields and industrial applications. Among the myriad of advanced three-dimensional printing techniques, two-photon polymerization lithography (TPL) uniquely offers a significant electron microscope (SEM) images of SMP structures before and after programming and after recovery, respectively. Reproduced under terms of the CC-BY license. [114] Copyright 2021, The Authors, published by Nature Publishing Group. b) Stiff SMPs for high-resolution reversible nanophotonics. I-II) The deformed and recovered nanopillars under optical microscope and SEM, respectively. Reproduced with permission. [115] Copyright 2022, American Chemical Society. c) Vapor-responsive photonic arrays. I-IV) Optical image of a grid array in air, in water vapors ~ 20 s, saturation with water vapors ~ 88s, and after the gas flow stopped, respectively.Reproduced under terms of the CC-BY license. [116] Copyright 2021, The Authors, published by Royal Society of Chemistry. d) SEM image of a 40-layer face-cantered-cubic photonic structure printed by SU-8. Reproduced with permission. [117] Copyright 2004, Nature Publishing Group. e) SEM image of helices with an axial pitch of 800 nm and a radius of 800 nm fabricated by the two-step absorption photoresist. Reproduced with permission. [118]

show abstract

Section: Acrylatesmentioning

confidence: 99%

Two‐Photon Polymerization Lithography for Optics and Photonics: Fundamentals, Materials, Technologies, and Applications

Wang

Zhang

Ladika

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…wavelength, intensity, and irradiation time) modulated rapidly in a noninvasive manner [186], which are generally actuated based on photochemical mechanisms (e.g. photoisomerization) or photothermal effects [187][188][189][190][191][192][193][194][195]. These smart structures possess the capability to undergo reversible changes in their physical and chemical characteristics, including alterations in morphology and surface wettability, under light of an appropriate wavelength [188-190, 194, 196].…”

Section: Light-responsive Structuresmentioning

confidence: 99%

Femtosecond laser direct writing of functional stimulus-responsive structures and applications

Zhang,

Wu,

Zhang

et al. 2023

Int. J. Extrem. Manuf.

View full text Add to dashboard Cite

Diverse natural organisms possess stimulus-responsive structures to adapt to the surrounding environment. Inspired by nature, researchers have developed various smart stimulus-responsive structures with adjustable properties and functions to address the demands of ever-changing application environments that are becoming more intricate. Among many fabrication methods for stimulus-responsive structures, femtosecond laser direct writing (FsLDW) has received increasing attention because of its high precision, simplicity, true three-dimensional machining ability, and wide applicability to almost all materials. This paper systematically outlines state-of-the-art research on stimulus-responsive structures prepared by FsLDW. Based on the introduction of femtosecond laser-matter interaction and mainstream FsLDW-based manufacturing strategies, different stimulating factors that can trigger structural responses of prepared intelligent structures, such as magnetic field, light, temperature, pH, and humidity, are emphatically summarized. Various applications of functional structures with stimuli-responsive dynamic behaviors fabricated by FsLDW, as well as the present obstacles and forthcoming development opportunities, are discussed.

show abstract

“…Different triggers allow the bending of LC molecules, as is shown in Figure 3 . The most common trigger is heat [ 41 , 42 ], where the temperature can force the molecules to lose their alignment. It is the passage from the nematic phase which presents a global alignment of the molecules to the isotropic phase where a molecular disorder appears, also called T N-I .…”

Section: Actuation Techniques For Lc Molecular Disorientationmentioning

confidence: 99%

Smart Nematic Liquid Crystal Polymers for Micromachining Advances

et al. 2023

View full text Add to dashboard Cite

The miniaturization of tools is an important step in human evolution to create faster devices as well as precise micromachines. Studies around this topic have allowed the creation of small-scale objects capable of a wide range of deformation to achieve complex tasks. Molecular arrangements have been investigated through liquid crystal polymer (LCP) to program such a movement. Smart polymers and hereby liquid crystal matrices are materials of interest for their easy structuration properties and their response to external stimuli. However, up until very recently, their employment at the microscale was mainly limited to 2D structuration. Among the numerous issues, one concerns the ability to 3D structure the material while controlling the molecular orientation during the polymerization process. This review aims to report recent efforts focused on the microstructuration of LCP, in particular those dealing with 3D microfabrication via two-photon polymerization (TPP). Indeed, the latter has revolutionized the production of 3D complex micro-objects and is nowadays recognized as the gold standard for 3D micro-printing. After a short introduction highlighting the interest in micromachines, some basic principles of liquid crystals are recalled from the molecular aspect to their implementation. Finally, the possibilities offered by TPP as well as the way to monitor the motion into the fabricated microrobots are highlighted.

show abstract

3D optomechanical metamaterials

Cited by 24 publications

References 47 publications

Two‐Photon Polymerization Lithography for Optics and Photonics: Fundamentals, Materials, Technologies, and Applications

Two‐Photon Polymerization Lithography for Optics and Photonics: Fundamentals, Materials, Technologies, and Applications

Femtosecond laser direct writing of functional stimulus-responsive structures and applications

Smart Nematic Liquid Crystal Polymers for Micromachining Advances

Contact Info

Product

Resources

About