Two-Photon Polymerization Nanomanufacturing Based on the Definition–Reinforcement–Solidification (DRS) Strategy

Hu, Zhiyong; Ren, Hang; Xia, Hong; Tian, Zhen‐Nan; Qi, Jinlei; Wen, Mao; Chen, Qi‐Dai

doi:10.1109/jlt.2020.3045452

Cited by 12 publications

(13 citation statements)

References 39 publications

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“…Besides, a DRS-TPP processing technology was used to shorten the processing time (Details can be found in Supplementary Fig. 15 ) 41 . Consequently, it only takes ~1.5 h to fabricate a CE lens of 400 μm.…”

Section: Methodsmentioning

confidence: 99%

Miniature optoelectronic compound eye camera

Zhang

Pan

et al. 2022

Nat Commun

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Inspired by insect compound eyes (CEs) that feature unique optical schemes for imaging, there has recently been growing interest in developing optoelectronic CE cameras with comparable size and functions. However, considering the mismatch between the complex 3D configuration of CEs and the planar nature of available imaging sensors, it is currently challenging to reach this end. Here, we report a paradigm in miniature optoelectronic integrated CE camera by manufacturing polymer CEs with 19~160 logarithmic profile ommatidia via femtosecond laser two-photon polymerization. In contrast to μ-CEs with spherical ommatidia that suffer from defocusing problems, the as-obtained μ-CEs with logarithmic ommatidia permit direct integration with a commercial CMOS detector, because the depth-of-field and focus range of all the logarithmic ommatidia are significantly increased. The optoelectronic integrated μ-CE camera enables large field-of-view imaging (90°), spatial position identification and sensitive trajectory monitoring of moving targets. Moreover, the miniature μ-CE camera can be integrated with a microfluidic chip and serves as an on-chip camera for real-time microorganisms monitoring. The insect-scale optoelectronic μ-CE camera provides a practical route for integrating well-developed planar imaging sensors with complex micro-optics elements, holding great promise for cutting-edge applications in endoscopy and robot vision.

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Section: Methodsmentioning

confidence: 99%

Miniature optoelectronic compound eye camera

Zhang

Pan

et al. 2022

Nat Commun

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“…68 S represents irradiating internal unpolymerized materials by continuous ultraviolet (UV) light. 68 Combining these three steps, the problems of low processing efficiency and mechanical strength can be effectively solved in near-threshold TPP. 68 The spatial shaping of ultrafast lasers also has an important impact on the processing efficiency.…”

Section: Optimization Of Processing Efficiencymentioning

confidence: 99%

“…68 Combining these three steps, the problems of low processing efficiency and mechanical strength can be effectively solved in near-threshold TPP. 68 The spatial shaping of ultrafast lasers also has an important impact on the processing efficiency. The cross section of the laser beam emitted by the traditional laser is usually a Gaussian prole.…”

Section: Optimization Of Processing Efficiencymentioning

confidence: 99%

Optimization mechanism and applications of ultrafast laser machining towards highly designable 3D micro/nano structuring

Yang

Song

et al. 2022

RSC Adv.

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“…Two‐photon polymerization (TPP) technology is a feasible way to obtain bionic surfaces with high resolution and flexible 3D manufacturing capability. [ 41–43 ] For example, Liu et al fabricated a triply re‐entrant array and two additional parallel walls on the top via TPP to achieve superhydrophobic property and directional liquid spreading ability. [ 44 ] Although perfect structures were showed in the report, TPP is seldom used as a common method in wettability‐related reports due to its low efficiency and high positioning accuracy requirement over a large area.…”

Section: Introductionmentioning

confidence: 99%

Wettability and Droplet Directional Spread Investigation of Crescent Array Surface Inspired by Slippery Zone of Nepenthes

Jing

Sun

et al. 2021

Adv Materials Inter

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In this report, the surface topography of crescent array in the Nepenthes slippery zone is measured and bionic fabricated by two‐photon polymerization (TPP) technology. A subregion outside‐in scanning method (SOSM) is proposed to solve the photoresist converge and large area surface positioning problem existing in bionic crescent array surface (BCAS) fabrication. The geometric parameters of BCAS, including area fraction, height, offset, and outer–inner radius ratio, are systematically investigated to reveal their effects on the hydrophobic performance. Perfluorinated polyether oil and fluorocarbon solvent were used to increase the hydrophobicity and homogeneity of bionic surface. The contact angles of BCASs coated with and without the solution are measured. The maximum contact angle can reach to 152.1°. What's more, considering the anisotropy of BCAS, anisotropic wetting research is conducted. Offset and outer–inner radius ratio are found to have obvious effects on the contact angle differences between convexity and concavity directions. The maximum contact angle difference can reach to 5.1°. Spreading and pinning phenomenon caused by droplet anisotropic wetting are observed and explained. This work is expected to provide references for the BCAS to be applied in super‐hydrophobic and droplets motion fields.

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Two-Photon Polymerization Nanomanufacturing Based on the Definition–Reinforcement–Solidification (DRS) Strategy

Cited by 12 publications

References 39 publications

Miniature optoelectronic compound eye camera

Miniature optoelectronic compound eye camera

Optimization mechanism and applications of ultrafast laser machining towards highly designable 3D micro/nano structuring

Wettability and Droplet Directional Spread Investigation of Crescent Array Surface Inspired by Slippery Zone of Nepenthes

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