Photomanipulated Architecture and Patterning of Azopolymer Array

Kong, Xueli; Wang, Xiaofan; Luo, Tianchan; Yao, Yuan; Li, Lei; Lin, Shaoliang

doi:10.1021/acsami.7b04273

Cited by 35 publications

(21 citation statements)

References 59 publications

(97 reference statements)

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“…Precise control of the morphology of the azopolymer film can be realized by DPL. In holography, various polarization patterns can be generated by changing the polarization direction and polarization type of a single beam or several interference beams . A typical illustration of this process is shown in Figure a .…”

Section: Applications Of Azopolymer‐based Nilmentioning

confidence: 99%

Azopolymer‐Based Nanoimprint Lithography: Recent Developments in Methodology and Applications

Yang

2020

ChemPlusChem

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Nanofabrication on soft polymeric surfaces is an essential process in many fields, for example, chip manufacturing, microfluidics, high efficiency solar cells, and anticounterfeiting. In order to achieve these applications, various nanofabrication methods have been explored. Among them, nanoimprint lithography (NIL) has drawn worldwide attention because of its cheap and fast processability. In this minireview, an overview of azopolymer-based NIL is provided. Since their discovery, azopolymers have demonstrated versatile photoresponsive characteristics due to their unique physical and chemical properties that originate from the photoisomerization of azobenzene chromophores. As such, two aspects are reported in this minireview. On the one hand, various azopolymers showing photofluidization and photoswitchable glass transition temperatures have been developed, thus facilitating methodological advancements in NIL. On the other hand, these ondemand NIL methods provide greater opportunities for azopolymer-based applications, such as templating of optics, directional photo-manipulation of nanopatterns, and micro photoactuators. Also the challenges are discussed that remain in this field.

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Section: Applications Of Azopolymer‐based Nilmentioning

confidence: 99%

Azopolymer‐Based Nanoimprint Lithography: Recent Developments in Methodology and Applications

Yang

2020

ChemPlusChem

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“…If azomaterials properties are coupled with other fabrication techniques, micro/nano structures of different shape and size can be realized [11,134,135] e.g. parallel groves [32,107,112,136], array of microporous [137][138][139][140][141] and hemispherical caps [142,143], whose geometry can be successively modified. Indeed, this technique allows to produce very sophisticated micro/nanoarchitecture that would be difficult to attain with other methods [12,107,144,145].…”

Section: Directional Photofluidization Lithography (Dpl)mentioning

confidence: 99%

Photonic applications of azobenzene molecules embedded in amorphous polymer

2020

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The incorporation of azobenzene chromophores into polymer systems gives rise to a number of unique effects under UV and visible light irradiation. The light-driven isomerization of the azobenzene element acts as a light-to-mechanical energy converter, translating the nanoscopic structural movement of the isomerization azobenzene into macroscopic topographic film modulation in the form of surface relief. This review focuses on the study of reversible changes in shape in various systems incorporating azobenzene, including large-scale superficial photo-patterned glassy materials, light-driven reshaping of tridimensional superficial azo-textures and contractions of stimuli-responsive liquid crystalline networks (LCNs). Further, promising applications of azo systems are investigated as smart biointerfaces able to mimic time-varying biological systems.

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“…The technique of oxygen plasma etching can be used to shape the polymerbased templates further. 31,[41][42][43][44] In addition, the colloidal templates are easily removed. For example, the hexagonal-patterned polystyrene spheres monolayer is one of the most used colloidal masks as it can be easily removed by the solvent washing, peeling off, or the high-temperature annealing.…”

Section: Introductionmentioning

confidence: 99%