Flexible fabrication of biomimetic compound eye array via two-step thermal reflow of simply pre-modeled hierarchic microstructures

Huang, Shengzhou; Li, Mujun; Shen, Lianguan; Qiu, Jinfeng; Zhou, Yingxue

doi:10.1016/j.optcom.2017.02.040

Cited by 18 publications

(8 citation statements)

References 33 publications

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“…Besides the laser-based fabrication processes to produce artificial compound eyes, other approaches have also been introduced. In fact, Huang et al present an approach of combining the maskless projection lithography technique with the thermal reflow process to successfully fabricate the biomimetic compound eye (BCE) on a curved substrate [ 44 ]. The fabrication process includes a two-step reflow method combining the lithography process.…”

Section: Artificial Compound Eye Imaging System Using Microlens Arraysmentioning

confidence: 99%

Artificial Compound Eye Systems and Their Application: A Review

Phan

Bae

et al. 2021

Micromachines

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The natural compound eye system has many outstanding properties, such as a more compact size, wider-angle view, better capacity to detect moving objects, and higher sensitivity to light intensity, compared to that of a single-aperture vision system. Thanks to the development of micro- and nano-fabrication techniques, many artificial compound eye imaging systems have been studied and fabricated to inherit fascinating optical features of the natural compound eye. This paper provides a review of artificial compound eye imaging systems. This review begins by introducing the principle of the natural compound eye, and then, the analysis of two types of artificial compound eye systems. We equally present the applications of the artificial compound eye imaging systems. Finally, we suggest our outlooks about the artificial compound eye imaging system.

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Section: Artificial Compound Eye Imaging System Using Microlens Arraysmentioning

confidence: 99%

Artificial Compound Eye Systems and Their Application: A Review

Phan

Bae

et al. 2021

Micromachines

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“…With the development of MEMS (micro-electro-mechanical systems) technology, researchers have achieved notable results in studies of bionic compound eyes. The resolution levels of compound eyes prepared by MEMS [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ] technology have greatly increased, and many more scenes can now be applied. Such technologies have greatly promoted compound eye research and development, and microlens-based technologies such as artificial compound eyes are now widely used in endoscopy, robotic vision, 3D imaging, and navigation [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

A Meniscus Multifocusing Compound Eye Camera Based on Negative Pressure Forming Technology

Liu

Dong

et al. 2023

Micromachines

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To meet the challenge of preparing a high-resolution compound eye, this paper proposes a multi-focal-length meniscus compound eye based on MEMS negative pressure molding technology. The aperture is increased, a large field of view angle of 101.14° is obtained, and the ommatidia radius of each stage is gradually increased from 250 μm to 440 μm. A meniscus structure is used to improve the imaging quality of the marginal compound eye so that its resolution can reach 36.00 lp/mm. The prepared microlenses have a uniform shape and a smooth surface, and both panoramic image stitching and moving object tracking are achieved. This technology has great potential for application in many fields, including automatic driving, machine vision, and medical endoscopy.

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“…These include interference lithography, hot embossing, inkjet printing, laser swelling or ablation, imprinting, thermal reflow, and direct transfer of photocurable polymer 11 , 12 , 19 – 23 Nonetheless, these methods suffer from size limitation and the size of the fabricated structure is at the micron level. For nanofunctional structures, a variety of methods, such as self-assembly, self-masked dry etching, soft-lithography, and reactive-ion etching, have been proposed to improve the optical performance 24 …”

Section: Introductionmentioning

confidence: 99%

Fabrication of macrolens with fully covered nanopillars in large area by air-assisted deformation and nanoimprinting

Wang

Zhu

et al. 2023

Opt. Eng.

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.A macrolens with fully covered nanopillars in large area was fabricated by a combination of air-assisted deformation and nanoimprinting. The planar nanopillars were transformed into macrocurved distribution by air-assisted deformation. We tested the nonwetting and antireflectance performance of the fabricated structures and both performances improved by the addition of nanopillars relative to the planar surface. The nanopillars and the curved architecture increased the contact angle by 27 deg and 13 deg, respectively. In addition, the height and diameter of the macrolens could be controlled precisely by the change of the mold size and adjustment of applied negative pressure. Furthermore, the surface reflection was reduced by 1% to 2% over a wavelength range of 500 to 2200 nm by the introduction of gradual index variation. The proposed method is simple, controllable, and has high fabrication efficiency. The macrolens with nanopillars have wide potential applications, such as in optical devices for harsh environments.

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Flexible fabrication of biomimetic compound eye array via two-step thermal reflow of simply pre-modeled hierarchic microstructures

Cited by 18 publications

References 33 publications

Artificial Compound Eye Systems and Their Application: A Review

Artificial Compound Eye Systems and Their Application: A Review

A Meniscus Multifocusing Compound Eye Camera Based on Negative Pressure Forming Technology

Fabrication of macrolens with fully covered nanopillars in large area by air-assisted deformation and nanoimprinting

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