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主办单位：
中国光学工程学会清华大学上海理工大学
名誉主编： 庄松林院士
国际主编： 顾敏院士
主编：
孙洪波教授仇旻教授
创刊：2020年3月
ISSN：2662-1991

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最新上线

Scalable high-efficiency metasurface-refractive retro-reflector

Quan Yuan, Qin Ge, Xiujuan Zou, Yi Zhang, Yuhang Yang, Boyan Fu, Ruoyu Lin, Boping He, Shuming Wang, Din Ping Tsai, Shining Zhu, Zhenlin Wang

doi: 10.1186/s43074-025-00172-9

Abstract(0) PDF(0)

Abstract:
A retroreflector, an optical device that reflects light back along its incident path, plays a crucial role in optics. However, achieving high-efficiency, large-area retroreflection in planar optical systems remains a persistent challenge, constrained by the bulky nature of traditional designs like corner cube mirrors and cat’s eye retroreflectors. Here, we demonstrate a scalable metasurface-refractive retroreflector (MRR) that combines a refractive lens and meta-lens, achieving polarization-independent retroreflection with a half power field of view (FOV) of 70° and 88.5% efficiency at normal incident. The scalability of the MRR enables straightforward planar expansion into arrays, facilitating large-area effective retroreflection. Additionally, a moving object equipped with MRR is observed in a laser tracking experiment. The metasurface-refractive architecture evidently improves the functionality of the retroreflector, and paves a new path in the field of smart optical device design.

Ensemble deep learning-enabled single-shot composite structured illumination microscopy (eDL-cSIM)

Jiaming Qian, Chunyao Wang, Hongjun Wu, Qian Chen, Chao Zuo

doi: 10.1186/s43074-025-00171-w

Abstract(28) PDF(0)

Abstract:
Structured illumination microscopy (SIM) has emerged as a powerful super-resolution technique for studying protein dynamics in live cells thanks to its wide-field imaging mode and high photon efficiency. However, conventional SIM requires at least nine raw images to achieve super-resolution reconstruction, which limits its imaging speed and increases susceptibility to rapid sample dynamics. Moreover, the reliance of SIM on illumination parameters and algorithmic post-processing renders it vulnerable to reconstruction artifacts, especially at low signal-to-noise ratios. In this work, we propose a single-shot composite structured illumination microscopy method using ensemble deep learning (eDL-cSIM). Without modifying the original SIM setup, eDL-cSIM employs only one composite structured illumination pattern generated by 6-beam interferometry. The resultant composite-coded raw image, which contains multiplexed high-frequency spectral information beyond the diffraction limit, is further processed using ensemble deep learning to predict a high-quality, artifact-free super-resolved image. Experimental results demonstrate that eDL-cSIM integrates the advantages of various state-of-the-art neural networks, enabling robust super-resolution image predictions across different specimen types or structures of interest, and outperforms classical physics-driven methods in terms of imaging speed, reconstruction quality and environmental robustness, while avoiding intricate and specialized algorithmic procedures. These collective advantages make eDL-cSIM a promising tool for fast and robust live-cell super-resolution microscopy with significantly reduced phototoxicity and photobleaching.

Light-propelled photocatalytic evaporator for robotic solar-driven water purification

Dong-Dong Han, Qiang Wang, Zhao-Di Chen, Lei Wang, Zhiyong Chang, Sheng-Yi Xie, Xian-Bin Li, Wei Zhang, Yong-Lai Zhang

doi: 10.1186/s43074-025-00169-4

Abstract(25) PDF(4)

Abstract:
Solar-driven interfacial water purification (SDIWP) has emerged as a green, cost-effective, and sustainable technology for waste/sea water treatment. However, at present, innovative smart water treatment systems that enable high-efficiency water purification through multiform solar schemes are rare. Herein, we report a light-propelled photocatalytic evaporator based on semi-metallic reduced graphene oxide (RGO)/ titanium carbide MXene-titanium dioxide (Ti₃C₂T_x-TiO₂) ternary hybrid foams for multi-scheme SDIWP. The RGO/Ti₃C₂T_x-TiO₂ foam is prepared by freeze-drying induced self-assembly (FDISA) of Ti₃C₂T_x and graphene oxide (GO) nanosheets by which an in-situ redox reaction between Ti₃C₂T_x and GO nanosheets occurs and TiO₂ nanoparticles are generated simultaneously. The synergistic effect leads to the formation of the semi-metallic RGO/Ti₃C₂T_x-TiO₂ framework with the Ti-O-C covalent bonding between RGO and Ti₃C₂T_x. Under light irradiation, the photogenerated carriers in RGO/Ti₃C₂T_x-TiO₂ can occupy the quantum-confined graphene-like states in RGO with an average lifetime of 0.8 ps, this value is 2 orders of magnitude shorter than that of GO and Ti₃C₂T_x. As a result, the RGO/Ti₃C₂T_x-TiO₂ foam shows photocatalytic degradation activity and photothermal conversion ability, enabling multi-scheme SDIWP. Owing to its excellent photothermal properties and quantum-confined superfluidic structures, the RGO/ Ti₃C₂T_x-TiO₂ foam exhibits superior vapor generation performance (1.72 kg m^-2 h^-1). Furthermore, the photocatalytic evaporator can be remotely manipulated as a floating robot for water treatment through programmable light navigation via photothermal Marangoni propulsion. This work provides a new approach for developing robotic SDIWP systems.

Interleaved frequency comb by chip-scale acousto-optic phase modulation at polydimethylsiloxane for higher-resolution direct plasmonic comb spectroscopy

San Kim, Tae-In Jeong, Robert A. Taylor, Kwangseuk Kyhm, Young-Jin Kim, Seungchul Kim

doi: 10.1186/s43074-025-00170-x

Abstract(22) PDF(0)

Abstract:
High-resolution spectroscopy unveils the fundamental physics of quantum states, molecular dynamics, and energy transfers. Ideally, a higher spectral resolution over a broader bandwidth is the prerequisite, but traditional spectroscopic techniques can only partially fulfill this requirement even with a bulky system. Here we report that a multi-frequency acousto-optic phase modulation at a chip-scale of soft polydimethylsiloxane can readily support a 200-times higher 0.5-MHz spectral resolution for the frequency-comb-based spectroscopy, while co-located plasmonic nanostructures mediate the strong light-matter interaction. These results suggest the potential of polydimethylsiloxane acousto-optic phase modulation for cost-effective, compact, multifunctional chip-scale tools in diverse applications such as quantum spectroscopy, high-finesse cavity analysis, and surface plasmonic spectroscopy.

引用排行

Terahertz spectroscopy in biomedical field: a review on signal-to-noise ratio improvement

Yan Peng, Chenjun Shi, Yiming Zhu, Min Gu, Songlin Zhuang

2020, 1(1). doi: 10.1186/s43074-020-00011-z

PDF(38)

Recent advances in multi-dimensional metasurfaces holographic technologies

Ruizhe Zhao, Lingling Huang, Yongtian Wang

2020, 1(1). doi: 10.1186/s43074-020-00020-y

PDF(65)

Information Metamaterials: bridging the physical world and digital world

Qian Ma, Tie Jun Cui

2020, 1(1). doi: 10.1186/s43074-020-00006-w

PDF(65)

Vacuum-ultraviolet photodetectors

Lemin Jia, Wei Zheng, Feng Huang

2020, 1(1). doi: 10.1186/s43074-020-00022-w

PDF(37)

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