Advanced Optical Materials
·
2019
·Vol. 8
·期 4
·1901767
·
IF 7.125
Feng Liu,Hao Bian,Fan Zhang,Qing Yang,Chao Shan,Minjing Li,Xun Hou,Feng Chen
In this work, a 3D IR artificial compound eye (ACE) optical component is fabricated using thermoplastic IR polymer material. The femtosecond laser-assisted wet etching and the 3D nano-imprinting techniques are proposed for fabricating this thin shell multi-aperture component. The prepared component is close-packed with over 1000 high-quality micro-facet-lenslets (ommatidia) on the semispherical thin shell dome with base radius of 2.7 mm and sag height of 2.1 mm, enabling enlarged field of view to 148°. The ommatidia with diameter of 150 µm and numerical aperture of 0.35 are demonstrated to have a practical spatial resolution up to 160 lp mm −1 . IR imaging experiments (both in passive and active scenarios) confirm its outstanding optical properties and uniformity, and demonstrate the probability of thermal target imaging with such component in the near-infrared band. The proposed fabrication strategy shows remarkable efficiency and advantage in massive replication, and such ACE component predicts its potential in emerging applications, such as IR imaging, target tracking, and so on.
研究领域:
光学工程
·
材料科学
·
成像技术
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xinxue Wu,Chaolong Fang,Wangdong Xu,Dawei Zhang
Natural compound eyes endow arthropods with wide-field high-performance light-harvesting capability that enables them to capture prey and avoid natural enemies in dim light. Inspired by natural compound eyes, a curved artificial-compound-eye (cACE) photodetector for diffused light harvesting is proposed and fabricated, and its light-harvesting capability is systematically investigated. The cACE photodetector is fabricated by introducing a cACE as a light-harvesting layer on the surface of a silicon-based photodetector, with the cACE being prepared via planar artificial-compound-eye (pACE) template deformation. The distinctive geometric morphology of the as-prepared cACE effectively reduces its surface reflection and the dependence of the projected area on the incident light direction, thereby significantly improving the light-harvesting ability and output photocurrent of the silicon-based photodetector. Furthermore, the performances of cACE, pACE, and bare polydimethylsiloxane (PDMS)-attached photodetectors as diffused light detectors are investigated under different luminances. The cACE-photodetector output photocurrent is 1.395 and 1.29 times those of the bare PDMS-attached and pACE photodetectors, respectively. Moreover, this photodetector has a desirable geometric shape. Thus, the proposed cACE photodetector will facilitate development of high-performance photodetectors for luminance sensing.
研究领域:
光学
·
生物仿生学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mingyang Chen,Yaxuan Lu,Renata Solarska,Ming Li
The insect vision systems mainly rely on the apposition compound eyes (CEs) with the omnidirectional light-harvesting and wide-angle sensing abilities for prey recognition and enemy defense. Thus, the insect CEs become a compelling source of inspiration for the development of optoelectronic devices and optical sensors. Herein, inspired by the insect CEs, a biomimetic plasmonic CE biosensor is reported with excellent omnidirectional plasmonic properties for on-particle label-free surface-enhanced Raman spectroscopy (SERS) multiplexed detection of biomarkers. Our biosensor consists of a closely-packed polystyrene microsphere monolayer covered with a dense layer of vertically aligned Au nanowires (v-Au NWs). The omnidirectional distribution of v-Au NWs on the curved surface endows the plasmonic CE biosensor with angle-independent plasmonic responses and uniform SERS signals, verified by our experimental investigations and numerical simulations. Based on the intrinsic SERS fingerprints and dense electromagnetic “hotspots”, the present plasmonic CE biosensor is demonstrated with high sensitivity and excellent selectivity for simultaneous on-particle label-free SERS detection of uric acid, folic acid and adenine oligomer. Moreover, the composition and concentration information of the complex samples integrated in the SERS images is recorded in a smartphone-readable QR code, highlighting its practical potential for label-free SERS multiplexed biosensing.
研究领域:
生物传感器
·
纳米光子学
·
光学传感
·
分析化学
·
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER SCIENCE SERIES A
·
2025
·
IF 1.1
Deyu Yu,Yang Liangjiong,Deng Qingsheng,Zou Haipeng,Yan Xinmei,Zhang Zichen,Jiang Yan,Zhang Hongwen
In this study, polysiloxane microspheres were prepared by silane hydrolysis condensation method, and polysiloxane microspheres with fluorescent properties were obtained after calcination. SiO 2 nanoparticles were synthesized by the template method and composited with fluorescent polysiloxane microspheres through surface modification, and superhydrophobic composite microspheres with fluorescent properties were successfully prepared. The composites constructed multi-scale micro-nanostructures with morphology and structure similar to mosquito compound eyes. The structure and properties of the composite microspheres were investigated using characterization tools such as Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and contact angle tester. The results showed that the SiO 2 nanoparticles were successfully compounded with polysiloxane microspheres and formed a stable structure; the surface of the composite microspheres showed superhydrophobicity while retaining the fluorescent properties of the polysiloxane matrix. This fluorescent superhydrophobic composite with a bionic compound eye structure has broad application prospects in the fields of optical devices and functional coatings, etc.
研究领域:
材料科学
·
纳米技术
·
表面工程
·
光学材料
·
仿生学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）