Journal of Materials Chemistry C
·
2015
·Vol. 4
·期 3
·533-540
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IF 4.696
Zhenzhen Cai,Baolong Wang,Yang Zheng,Ming Li,Yao Li,Changming Chen,Daming Zhang,Zhanchen Cui,Zuosen Shi
A series of novel thermo-optic (TO) polymers (AF-Z-PC EPs) were achieved and they could be mixed with photoinitiator in solvent and to produce the negative-type fluorinated photoresists (NFPRs). TO waveguide switch arrays were fabricated based on the direct UV-written technique using the NFPRs. As the core of waveguide materials, AF-Z-PC EPs were synthesized by solution polymerization with 4,4′-(hexafluoro-isopropylidene) diphenol (6F-BPA) and bisphenol Z (BPZ) with triphosgene (BTC) and further reacted with epoxy chloropropane. The refractive index of the polymers can be adjusted by controlling the content of BPZ. Through a simple lithography process, the NFPRs can be fabricated as the waveguide easily. The propagation loss of a 4 μm wide straight waveguide was only 0.19 dB cm−1 at 1550 nm. The insertion loss of the device was directly measured to be about 9.0 dB. The rise and fall times of the device applied 200 Hz square-wave voltage were obtained as 1.546 ms and 1.226 ms, respectively. The switching power was about 15.5 mW, and the extinction ratio was 13.0 dB. The low-loss integrated switch arrays are suitable for realizing large-scale photonic integrated circuits.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
Advanced Optical Materials
·
2021
·Vol. 9
·期 21
·2101132
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IF 9.926
Yongcheng He,Haohua Liang,Meihua Chen,Licheng Jiang,Zhishen Zhang,Xiaobo Heng,Lin Yang,Yanpeng Hao,Jiulin Gan,Zhongmin Yang
Soft actuators, an emerging field in robotics, have great potential for wide-ranging applications in biology, medicine, engineering, and oceanography. Photoactuators that are stimulated by light to produce reversible mechanical deformation have attracted significant interest in recent years owing to their advantages of high resolution, fast switching, flexible controllability, and electromagnetic interference immunity. Conventional photoactuators rely on free-space illumination, which limits the control in light-obstructed surroundings. A low loss optical fiber waveguide-based soft photoactuator composed of photothermally responsive material hinges and high-transparency elastomer fiber arms is proposed. When light travels in the elastomer fiber arms, the hinges exhibit a very large shape change so that the arms bend by themselves, with a maximum repeatable bending angle of approximately 145°. The angle is determined by the injected optical power. A fiber photoactuator with dual hinges is designed that is capable of reversible complex deformation. Moreover, in a narrow silicone tube, the fiber photoactuator can still be stimulated with considerable deformation by the light injected along the fiber. A fiber photoactuator-constructed microhook is demonstrated for grabbing object in water.
研究领域:
机器人学
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生物医学工程
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光学工程
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DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2021
·
IF 4.076
Jing Wang,Shuping Xu,Houyu Zhang,Lei Chen,Shulin Guan,Weiqing Xu
A novel strategy for constructing the organic core–shell structures/heterostructures (OCSHs) was developed by the surface doping of a charge transfer (CT) Py-TFP cocrystal (Py = pyrene; TFP = tetrafluoroterephthalonitrile) with the donor (D) or acceptor (A) replacement reaction. The lattice-selective doping of Pe (Pe = perylene) or TCNB (TCNB = 1,2,4,5-tetracyanobenzene) molecules on the Py-TFP surface resulted from both the molecular size match/mismatch and the distribution of the intermolecular hydrogen bonds. Spectroscopic analyses disclosed that the components of two types of lattice-oriented external shells, (Py-TFP)1–x(Pe-TFP)x and (Py-TFP)1–y(Py-TCNB)y, have the doping ratios of 0 < x ⩽ 2.00% and 0 < y ⩽ 4.03%, respectively. Their di-block core–shell heterostructures display the spatially segregated yellow-blue dual-color emission and the position-dependent optical waveguide with active and passive waveguide modes. Meanwhile, the Pe doped Py-TFP core–shell cocrystal presents (1,0,0) and (0,1,1) lattice-dependent emission and lightwave transmission. This study provides an effective fabrication strategy for the OCSH construction, and this core–shell cocrystallized heterojunction can be available for photonic and optoelectronic functional applications.
研究领域:
材料科学
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光学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 6
·期 4
·3224-3230
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IF 3.84
Yang Zheng,Changming Chen,Yunlong Gu,Jihou Wang,Shouzhuo Yang,Xu Fei,Xibin Wang,Yunji Yi,Xiaoqiang Sun,Fei Wang,Daming Zhang
In this study, a metal-cladding directly defined active waveguide technique is proposed. Optical waveguide amplifiers and thermo-optic (TO) waveguide switches based on erbium-containing polymer are designed and fabricated using this technique. The Er organic complexes containing polymeric reactivity groups are synthesized and investigated by free radical copolymerization. Optical characteristics and thermal stabilities of the active polymer are analyzed. Relative optical gain of the amplifier at 1530 nm is obtained as 3.6 dB. The rise and fall response time of the TO switch applied by 300 Hz square-wave voltage is measured as 511.7 μs and 341.5 μs, respectively. The power-time product is 12.5 mW ms and the extinction ratio is about 20 dB. The technique is very suitable for realizing large-scale optoelectronic integrated circuits.
研究领域:
光学
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材料科学
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DOI
高影响因子
RSC Advances
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2017
·Vol. 7
·期 31
·19136-19144
·
IF 3.108
Zhenzhen Cai,Qixuan Yu,Yang Zheng,Xiaoyu Shi,Xuesong Wang,Zhanchen Cui,Zuosen Shi,Changming Chen,Daming Zhang
Fluorinated polycarbonates containing dodecyl groups (AF-Ali-PC EPs), biphenyl groups (AF-Ar-PC EPs), and cross-linkable epoxy groups were synthesized to investigate the effects of the flexibility of monomers on the properties of thermo-optic waveguide devices. Transparent polymer films were prepared via photocuring of a solution (FPRs) containing AF-Ali-PC EPs or AF-Ar-PC EPs, a photo initiator, and cyclopentanone. The optical films have low surface energies and roughnesses, high thermal stabilities, and tunable refractive indices. Straight optical waveguide and MZI thermo-optic waveguide switch arrays were fabricated using Ali-PR 1 and Ar-PR 1. The propagation losses of the channel waveguides, measured by the cutback method, were 0.21 dB cm−1 and 0.19 dB cm−1 at the monitoring light of 1550 nm for the Ali-PR 1 and Ar-PR 1, respectively. The rise and fall times of the thermo-optic switch upon application of a 200 Hz square-wave voltage were 1.822 ms and 1.364 ms, respectively, for Ali-PRs and 2.994 ms and 2.301 ms, respectively, for Ar-PRs at the square-wave voltage of 110 Hz. The insertion loss and extinction ratio were measured to be 9.2 dB and 12.0 dB for the aliphatic segment-containing photoresists and 8.9 dB and 12.3 dB for the aromatic segment-containing photoresists, respectively. The applied electric powers were 15.0 mW and 20.0 mW, which were also the switching powers. In contrast with our previous work, fluoro-polycarbonates containing aliphatic segments were more suitable for optical waveguide devices than those containing aromatic segments.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Yang Zong,Minjie Xi,Yunqi Wang,Guohonghao Zeng,Dongliang Hu,Huihui Hu,Xiaoqi Hou,Kewang Nan,Xiangzhong Chen,Fan Xu,Oliver G. Schmidt,Yongfeng Mei,Jizhai Cui
Precisely capturing and manipulating microscale objects, such as individual cells and microorganisms, is fundamental to advancements in biomedical research and microrobotics. Photoactuators based on optical fibers serving as flexible, unobstructed waveguides are well-suited for these operations, particularly in confined locations where free-space illumination is impractical. However, integrating optical fibers with microscale actuators poses significant challenges due to size mismatch, resulting in slow responses inadequate for handling motile micro-objects. This study designs microactuators based on hydrogel/Au bilayer heterostructures that self-roll around a tapered optical fiber. This self-rolling mechanism enables the use of thin hydrogel layers only a few micrometers thick, which rapidly absorb and release water molecules during a phase transition. The resulting microactuators exhibit low bending stiffness and extremely fast responses, achieving large bending angles exceeding 800° within 0.55 s. Using this technique, this study successfully captures rapidly swimming Chlamydomonas and Paramecium, and demonstrates programmable non-reciprocal motion for effective non-contact manipulation of yeast cells. This approach provides a versatile platform for microscale manipulations and holds promise for advanced biomedical applications.
研究领域:
生物医学工程
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微纳米技术
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光学工程
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产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2021
·Vol. 9
·期 16
·2100166
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IF 9.926
Yang Shen,Guanchu Wang,Qiushun Zou,Xiaoyi She,Da Cai,Chongjun Jin
Reliable and ultrasensitive humidity detection is essential in industrial process controls, meteorology, and medical diagnostics. In this study, a high-performance relative humidity (RH) sensor driven by a plasmonic-photonic hybrid system (PPHS), which supports waveguide modes and surface plasmon polariton mode simultaneously, is proposed. Due to the distinct sensitivities of these two modes to refractive index variation and volume expansion, the dual-mode RH detection platform offers a unique tool for isolating the individual contribution of each effect and further revealing the mechanism of moisture absorption in a crosslinked PVA film. As an RH sensor, PPHS delivers a wavelength sensitivity of 1.16 nm %RH −1 (40–70 %RH) and an intensity sensitivity of 1.1 dB %RH −1 (55–90 %RH), respectively. Benefited from such an ultrahigh sensitivity, together with excellent recyclability and a quick response time of a few seconds, the PPHS shows an almost identical real-time RH curve with an even higher resolution (<0.1 %RH) compared to a commercial electrical hygrometer in the practical ambient RH monitoring. The PPHS is further demonstrated as a human breathing sensor and a skin-humidity-based noncontact switch, suggesting that the PPHS provides a great potential in medical diagnostics and optical modulation.
研究领域:
光学传感
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材料科学
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医学诊断
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DOI
高影响因子
Nanoscale
·
2019
·Vol. 11
·期 44
·21061-21067
·
IF 6.97
Meina Song,Yangyang Dang,Jie Dong,Xiaotao Zhang,Shengbin Lei,Wenping Hu
Lanthanide-based coordination polymers (CPs) have received great attention due to their tuneable structures and excellent luminescence properties. However, limited by the stability and micro/nanoscale morphology, a very small number of lanthanide-based CPs have been used for photonic applications. Herein, we present the synthesis of Eu-based CPs (compound 2) with highly regular one-dimensional (1D) microrod morphology by in situ structure transformation from compound 1. Moreover, the Eu-based CP microrods have an excellent stability and a high photoluminescence quantum yield (PLQY), and the distance-dependent PL spectra also exhibited typical characteristics of photoactive waveguides with a low optical-loss coefficient (0.00894 dB μm−1) during propagation. These intriguing behaviors not only extend the research field of optical waveguides through lanthanide-based CPs, but also provide an opportunity for further application in optical communication systems.
研究领域:
材料科学
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光学工程
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无机化学
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DOI
PubMed
高影响因子
Materials Chemistry Frontiers
·
2021
·Vol. 5
·期 13
·5055-5062
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IF 6.482
Hongyan Xia,Yibin Zhu,Xueliu Chen,Tingkuo Chen,Dao Zhang,Xiang Li,Fangcheng Shen,Haiming Jiang,Kang Xie
Multi-component hybrid optical heterojunctions assembled from chromophore-doped polymer microwires are one of the first choices of building blocks for the construction of complex/integrated functional photonic devices, because they not only have the advantages of the individual components (optical confinement from one-dimensional microstructures, high emission efficiency from chromophore and flexibility from polymer matrix), but also bring novel performances to the system by the synergetic interactions between multiple components which cannot be obtained from single components. Herein, we propose a strategy to construct different waveguide heterojunctions through arrangement and combination of two kinds of polymer doped optical microwires via micromanipulation. One of them (MW1) contains carboxyl-fluorescein and photochromic spiropyran which will undergo photoisomerization upon external light stimuli, producing tunable fluorescence (FL) emission for MW1 due to the adjustable fluorescence resonance energy transfer. The other (MW2) is embedded with the dye rhodamine 6G whose FL always remains almost unchanged. Waveguide logic gate, switch and modulator within these heterojunctions can be well realized by changing the external light stimuli and excitation position. Our study indicates that these tunable-emission microwire heterojunctions composed of responsive dye molecules would provide a novel tactic in developing multi-functional advanced waveguides for integrated micro/nanophotonic devices and circuits.
研究领域:
光学
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材料科学
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纳米技术
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DOI
高影响因子
Crystals
·
2020
·Vol. 10
·期 6
·511
·
IF 2.404
Xueni Liu,Yan Ren,Cheng Qian Zhang,Bo Wang,Sheng Qing Xia
Single-crystalline fibers have distinct structures and optical properties comparing with the bulk crystals. In this article, two types of single-crystalline fibers of deuterated potassium dihydrogen phosphate (K(H1−xDx)2PO4,DKDP) are obtained by rapid growth in room-temperature supersaturated solution. X-ray diffraction analysis reveals that these DKDP single-crystalline fibers belong to tetragonal (I-42d) and monoclinic (P21/c) phases, respectively. The crystal structure of the tetragonal DKDP single-crystalline fiber is identical to that of the bulk DKDP tetragonal crystal reported. The lattice parameters of the monoclinic DKDP fiber (with the deuterium content of 55%) are a = 14.6571 Å, b = 4.5187 Å, c = 18.6962 Å, and β = 108.030°, which is a new crystal phase of DKDP. The monoclinic DKDP single-crystalline fiber is metastable at the present experimental condition and readily transit to the corresponding DKDP tetragonal phase in solution and in solid by grinding. The optical experiment shows that the highly deuterated tetragonal DKDP single-crystalline fiber possesses excellent optical guided-wave and effective second-harmonic generation properties. DKDP single-crystalline fibers are expected to be the suitable candidates for fabrication of the miniaturized nonlinear optical devices.
研究领域:
材料科学
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光学
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DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2024
·
IF 2.1
Long-De Wang,Ling Tong,Jian-Wei Wu,Jie-Wei Rong,Chao Gao,Lu-Lu Bu
Fluorinated polyurethaneimide (PUI) electro-optic waveguide polymer with polyurethane and polyimide chain segment structures was synthesized by stepwise polymerization using the synthesized amino ester oligomer pu and imide oligomer pi as monomers. Since the main chain structure of the synthesized PUI had the functionality of both polyurethane and polyimide chain segment structures, it combines the excellent thermal and film-forming properties of polyurethanes and polyimides, as well as lower optical transmission loss in the near-infrared wavelength band. The glass transition temperature (Tg) of PUI was 182 °C, and the 5% heat loss decomposition temperature was 325 °C. The PUI had good optical properties with an optical propagation loss of 1.10 dB/cm and an electro-optic (EO) coefficient (γ33) of 86 pm/V at a wavelength of 1550 nm. A Mach-Zehnder interferometric polymer waveguide EO modulator had been designed and fabricated by using the PUI as a waveguide electro-optic core layer. The prepared polymer waveguide EO modulator showed a good electro-optic modulation response at a wavelength of 1550 nm under an applied 1 kHz sinusoidal modulation signal. The results showed that the synthesized PUI met the performance requirements for the preparation of polymer optical waveguide devices and was a polymer electro-optic waveguide material with good overall performance.
研究领域:
高分子科学
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光学材料
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电光学
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波导技术
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聚合物器件制备
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DOI
高影响因子
Analytical Methods
·
2017
·Vol. 9
·期 37
·5494-5501
·
IF 1.9
Min Zhu,Nuerguli Kari,Yin Yan,Abliz Yimit
A m-Cresol Purple-polyvinylpyrrolidone (m-CP-PVP) composite-film was immobilized on the surface of a potassium ion-exchanged glass optical waveguide using the spin-coating method. The optical properties of the film were probed by UV-visible Spectroscopy and Fourier Transform Infrared Spectroscopy. The transmittance variation and the structural properties of the m-CP-PVP composite film/K+-exchanged glass optical waveguide sensor were studied before and after reaction with an amine and volatile organic gases. When the sensing film was exposed to an amine gas, the color changed from yellow to purple/blue. This simply designed sensor was able to measure trimethylamine (TMA) gas down to a concentration of 0.1 ppb at room temperature, and its response and recovery times were 1.4 s and 5.6 s, respectively.
研究领域:
光学传感
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生物医学工程
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分析化学
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纳米材料
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环境监测
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）