IR Artificial Compound Eye

Liu, Feng; Bian, Hao; Zhang, Fan; Yang, Qing; Shan, Chao; Li, Minjing; Hou, Xun; Chen, Feng

doi:10.1002/adom.201901767

Cited by 33 publications

(25 citation statements)

References 47 publications

(77 reference statements)

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“…Benefit from the extreme nonlinear phenomenon of the interaction between light and material, femtosecond laser was adopted to realize many very unique structures and devices which nanosecond laser or picosecond laser is insufficient (Gattass and Mazur, 2008). The microlens structure and MLAs were successfully obtained utilizing femtosecond laser enhanced chemical isotropic etching process (Hao et al, 2012;Chen et al, 2020). The hierarchical micro/nano surface structures were also achieved via femtosecond laser direct writing which inspired numerous researchers to realize surfaces with superwettability (Zhang et al, 2012;Yong et al, 2013Yong et al, , 2020Yin et al, 2017;Duan et al, 2018;Bai et al, 2020;Wu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Underwater Superoleophobic Microlens Array With Remarkable Oil-Repellent and Self-Cleaning Ability

Bian

Liang

et al. 2020

Front. Chem.

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Underwater superoleophobic microlens array (MLA) has been emerging as a crucial device for its wide applications in ocean optical imaging and sensing, endoscopic surgery, microfluidics and optofluidics, and other biomedical applications. Fabrication of microlens arrays integrated with excellent optical performance as well as underwater superoleophobicity remains a great challenge. In this paper, we report an underwater super oil-repellent MLA on a transparent optical glass substrate via femtosecond laser-induced phase and structural modification and chemical isotropic etching. The fabricated sample simultaneously possesses microlens structures with a smooth surface to enable optical imaging function, and grid-patterned biomimetic micro/nano hierarchical surface structures to produce underwater oil-resistance with a contact angle of 160.0 • and a sliding angle of 1.5 •. The resultant oil-repellent MLA exhibits underwater superoleophobicity and self-cleaning abilities in water. Meanwhile, it was demonstrated to have impressive imaging capability even after oil contamination. We believe that this novel resultant anti-oil MLA will be helpful for underwater detection and bioscience research, especially in oil polluted underwater workspaces.

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Section: Introductionmentioning

confidence: 99%

Bioinspired Underwater Superoleophobic Microlens Array With Remarkable Oil-Repellent and Self-Cleaning Ability

Bian

Liang

et al. 2020

Front. Chem.

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“…Liu et al reported a 3D IR ACE consisted of 1200 ommatidia with NA of 0.35. [145] A master mold with concave MLA was first fabricated on a curved BK7 glass substrate by a traditional FLWE method. Then, the 3D nano-imprinting technique was used to transfer the concave structures on a near-IR PMMA plate.…”

Section: Direct Fabrication Methodsmentioning

confidence: 99%

“…f-h) Reproduced with permission. [145] Copyright 2019, Wiley-VCH. www.advmattechnol.de the above work, Liu et al prepared MLA on curved sapphire substrate which was used as a master mold for duplicating convex compound eyes on K9 glass.…”

Section: Direct Fabrication Methodsmentioning

confidence: 99%

Bioinspired Artificial Compound Eyes: Characteristic, Fabrication, and Application

Yang

Bian

et al. 2021

Adv Materials Technologies

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the visual nerve perception. This type of eyes has ultrahigh resolution, which can get clear image information. Inspired by this imaging system, people have put significant efforts over a long time for development of camera-related optical system for various applications, such as endoscope, digital camera, smartphones, robot eyes, visual implants. [7][8][9][10] Because of the rapid progress in micro/nano technologies, the artificial eyes structures can achieve extremely high resolution that is close to or even exceeding the human eye. However, the low field of view (FOV) (the maximum value is only 90°) hinders its wider applications. To solve this problem, multiple cameras need to be put together to work, which not only increases the cost, but also makes the entire optical system cumbersome. Hence, an optical device with portable, integrated, and large FOV features is highly desired.Different from the single-lens eyes, the insect eyes adopt another visual system. Figure 1b shows a honeybee's apposition compound eye, which has thousands of ommatidia arranged on a curved surface so that each ommatidium points in different directions. [11] Each unit consists of a lens, a crystalline cone, and a rhabdom. The focused light signal is transmitted to the photosensitive area by the crystalline cone, and then visual perception is generated after passing through the rhabdom. Each of the ommatidium can image which enables the insects to obtain sufficient information in a complex environment and exhibits the characteristics of large FOV, low aberration, and high sensitivity to moving objects. [12] In addition to the honeybee's compound eyes, the eyes of other insects in nature, such as mosquito eye, [13] fly's eye, [14] moth's eye, [15] and dragonfly's eye [16] also have similar structure and have attracted much attention due to the deep research on bionics. [4,9,12,[17][18][19][20][21] The characteristics of the compound eyes in nature and the advanced micro/nano-processing technologies provide great technical support and inspiration for the researchers to prepare artificial compound eyes (ACEs) with close-packed microlens arrays (MLAs) as optical imaging elements. [22][23][24][25][26][27][28][29][30] Such MLAs compose of microscale lenses with the same surface feature and the regular arrangements are important microoptical components. The great light field (LF) regulation and focusing abilities of MLAs have made it essentially in various applications such as imaging, [31][32][33][34][35][36][37][38][39] dynamic target capture, [40][41][42] beaming homogenizing, [43][44][45][46] sensing, [47][48][49] light extractionThe natural compound eyes provide great inspiration for design of advanced imaging devices. Artificial compound eyes (ACEs) with close-packed microlens arrays (MLAs) have attracted enormous research interests due to their remarkable advantages in modern micro-optical systems, such as miniaturization, high integration, tunable focal length, large field of view, and moving objects tracking. Over a decade of intens...

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“…Micromachines 2021, 12, x 2 of 7 dielectrics [21]. Earlier reports have already proven the effectiveness of the femtosecond laser ablation and etching technologies for fabricating optical devices [22][23][24]. However, the etching process involved in this technology still takes a lot of time.…”

Section: Methodsmentioning

confidence: 99%

“…As an appealing alternative, femtosecond laser manufacturing has become a powerful tool for processing optical devices based on a wide range of materials, including semiconductors [ 19 ], metals [ 20 ], and dielectrics [ 21 ]. Earlier reports have already proven the effectiveness of the femtosecond laser ablation and etching technologies for fabricating optical devices [ 22 , 23 , 24 ]. However, the etching process involved in this technology still takes a lot of time.…”

Section: Introductionmentioning

confidence: 99%

Rapid Fabrication of Large-Area Concave Microlens Array on ZnSe

et al. 2021

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A rapid and single-step method for the fabrication of a zinc selenide (ZnSe) concave microlens array through the high-speed line-scanning of a femtosecond laser pulse is presented. Approximately 1.1 million microlenses, with minimized volume and high transparency at wavelengths between approximately 0.76–20 μm were fabricated within 36 min. More importantly, the size of the microlenses can be controlled by adjusting the laser power. Their high-quality infrared optical performance was also demonstrated. This method holds great promise for the development of ZnSe-based micro-optical devices.

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IR Artificial Compound Eye

Cited by 33 publications

References 47 publications

Bioinspired Underwater Superoleophobic Microlens Array With Remarkable Oil-Repellent and Self-Cleaning Ability

Bioinspired Underwater Superoleophobic Microlens Array With Remarkable Oil-Repellent and Self-Cleaning Ability

Bioinspired Artificial Compound Eyes: Characteristic, Fabrication, and Application

Rapid Fabrication of Large-Area Concave Microlens Array on ZnSe

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