ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Fei Liu,Yuhan Sun,Ze Wang,Bo Li,Shichao Niu,Junqiu Zhang,Zhiwu Han,Luquan Ren
Antireflection (AR) surfaces are essential for the fields of flexible displays, photovoltaic industry, medical endoscope, intelligent windows, etc. Although natural creatures with well-organized micro/nanostructures have provided some coupling design principles for the rapid development of bioinspired AR materials, the mechanical vulnerability, poor flexibility, and nonadjustability have been pointed out as the drawback of these nanostructures. Here, a bioinspired reversible AR film with 4% reflectivity, 90% transmittance, and 9% haze in broadband (400–900 nm) was prepared. The flexible switching of AR performance enhancement and weakening throughout the visible wavelength band has been achieved by controlling the reversible change in the morphology of the interface structure. A variety of patterned film samples can be obtained by simply changing the template, which can be used in intelligent identification fields such as anticounterfeiting. The cycle test and photoelectric test show that the bionic reversible antireflection structure has certain stability and can effectively reduce the loss of photovoltaic cell conversion efficiency caused by mechanical deformation. It has broad application prospects in the fields of anticounterfeiting, intelligent window, flexible display, photoelectric element, and so on.
研究领域:
材料科学
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光学工程
·
生物仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LIQUID CRYSTALS
·
2015
·
IF 2.486
Feng Li,Zhongwei An,Xinbing Chen,Pei Chen
A series of 2,3-difluoro tolane allyloxy-based liquid crystals (LCs), which are composed of the tolane unit, lateral fluoro substituents, alkoxy and allyloxy terminal groups, were synthesised with 4-bromo-2,3-difluorophenol as the starting material via a five-step reaction. Their structures were confirmed by infrared spectroscopy (IR), mass spectroscopy (MS) and nuclear magnetic resonance (NMR). The mesomorphic properties were investigated by differential scanning calorimetry (DSC) and polarising optical microscopy (POM). The dielectric measurement was performed using an independent analyser EC-1 and the birefringence was determined using an Abbe refractometer. The results reveal that LCs have large negative dielectric anisotropy and high birefringence, which are potentially important for the fast response displays and liquid crystal photonic devices (LCDs).
研究领域:
材料科学
·
化学
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DOI
高影响因子
Matter
·
2024
·
IF 17.3
Jingyuan Chen,Xiaofeng Li,Qiujiang Liang,Binglin Zeng,Jing Zheng,Changjin Wu,Yingnan Cao,Jun Yang,Jinyao Tang
The macroscopic properties of a material are predominantly governed by the precise arrangement of the atoms composing its crystal lattice. Recent research shows that photons can excite vibrational modes in solids that induce dynamic transitions to new phases with exotic properties. Here, we demonstrate that colloids, as a micrometer-scale “atom” counterpart, can also be assembled with light, leading to dynamic material structure and properties. This work uses photoactive colloidal particles with long-range tunable interaction, which provides a versatile route to guide assembly on demand. To induce interaction directionality for assembly, the photonic nanojet effect on a photoactive colloidal particle is exploited to create a highly localized hydrodynamic flow resembling directional molecular binding. Adjusting the illuminating condition allows the tunable directional potential to be generated on spherical colloids, forming the polymorphic assembly to all 2D Bravais lattices on demand. Finally, we reveal that the rapid colloid phase transition, as controlled with light, can be used for reconfigurable photonic devices to control the diffraction of the near-infrared laser.
研究领域:
材料科学
·
光学
·
凝聚态物理
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Di Qian,Yahong Jin,Lifang Yuan,Haoyi Wu,Yanmei Li,Yihua Hu
The ever-increasing demand for portable near-infrared (NIR) light sources has presented significant challenges in the development of highly efficient and thermally stable NIR phosphors. To address this challenge, we have employed a cation-substitution strategy. we incorporated indium (In) and gallium (Ga) atoms into the B-sites of the garnet-host lattice in a 1:1 M ratio. Through strategic placement of In and Ga atoms at octahedral sites, an order-disorder transition was induced. This innovative method has significantly improved the phosphor's performance characteristics. The optimized Cr 3+ -doped gadolinium indium gallium garnet (GIGG) exhibits an emission peak at 770 nm with a maximum full width at half-maximum (FWHM) value of 135 nm. Its internal quantum efficiency (IQE) reaches 96.17 %, while the external quantum efficiency (EQE) for this garnet-based material achieves 50.26 %. Furthermore, at 423 K, the material's luminescence intensity remains at 96.44 % of its initial value, demonstrating remarkable thermal stability. These characteristics render it an ideal candidate for energy-efficient down-conversion layers in photonic devices. In follow-up investigations, a NIR phosphor-converted light-emitting diode (pc-LED) fabricated using the optimized GIGG:Cr 3+ delivered a NIR output power of 241.04 mW under 960 mA drive current and achieved a photoelectric conversion efficiency (PCE) of 15.25 % at 30 mA, thus demonstrating its suitability for various photonic applications. This study presents an efficient broadband NIR garnet-based phosphor and provides new opportunities for advancing next-generation, energy-efficient, and compact solid-state NIR light sources.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yunyu Zhao,Song You,Jiaojiao Fang,Haitong Liu,Lei Zhou,Yuhui Xu,Yaru Ni,Liang Fang,Chunhua Lu,Zhongzi Xu
Skin-like wearable devices have great potential in the era of intelligence. In addition to common electronic devices, flexible photonic devices are receiving ever-increasing attention, while intelligent features of devices such as self-healing are also requested. In this work, a smart skin-like wearable photonic device constructed by combining inorganic optical materials and self-healing polyurethanes is reported. Polyurethanes with skin-like modulus are synthesized by mixing chain extender, cross-linker, and hindered phenol AO-70, demonstrating fast self-healing capability (healing efficiency of 99 % within 2 min) and good shape memory effect (shape fixation rate of 90 %). A series of flexible photonic devices are prepared by depositing optical materials on polyurethane surfaces by physical vapor deposition (PVD), with a focus on a photonic device for 1064 nm laser protection. Notably, the device exhibits a spectral recovery rate of 91.76 % after 150 % strain and a spectral recovery rate of 98.13 % after healing in 2 min, indicating superior stretchability and fast self-healing ability. This work provides a new strategy for smart skin-like wearable flexible photonic devices.
研究领域:
材料科学
·
光学工程
·
智能设备
✓ 已验证
产品关联
DOI
高影响因子
Matter
·
2025
·
IF 17.5
Qing-Peng Peng,Zi-Lin He,Jing-Hua Chen,Jun-Hua Wei,Jian-Bin Luo,Tian-Chi Wang,Kong-Lan Chen,Dai-Bin Kuang
Organic-inorganic metal halides (OIMHs) exhibit remarkable thermodynamic transitions between crystalline and amorphous states, yet their potential application in optical fibers has not been explored. In this study, we present a melt-filling strategy leveraging the low-temperature (230°C) fluidity of (HTPP) 2 MnBr 4 and (HTPP) 2 SbBr 5 (HTPP = hexyltriphenylphosphonium) glasses to fabricate optical fibers with controllable diameters and lengths. These OIMH fibers processed at 230°C feature a core-cladding structure with minimal defects, achieving remarkably low transmission losses of 0.41 dB/cm for Mn-based fibers and 0.16 dB/cm for Sb-based fibers, along with exceptional mechanical flexibility (bending radius ≤0.8 mm). These optical fibers enable information encryption systems and reliable light transmission under bending, demonstrating their potential applications in optical encryption and integrated photonics. This work establishes OIMHs as promising candidates for next-generation optical waveguides.
研究领域:
材料科学
·
光学工程
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光子学
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纳米科技
·
信息加密技术
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Zhengyu Ding,Zhihao Zhang,Binjie Xin,Xue Yang
This study develops flexible PAN-Eu/PVP/TPPO(PAN-EPT) fluorescent nanofiber membranes through a dual-ligand electrospinning strategy (PVP/TPPO), addressing long-standing challenges in rare-earth polymer systems: self-aggregation of rare-earth complexes (leading to luminescence quenching) and poor compatibility between complexes and polymer matrices. The optimized membranes exhibit UV-activated red emission at 618 nm with 45% higher color purity than conventional Eu 3+ complexes, enabled by suppressed aggregation (XPS-confirmed Eu-O coordination) and enhanced energy transfer. Simultaneous mechanical robustness (12 MPa strength, 32% elongation) stems from PAN-EPT hydrogen bonding (FTIR-verified). Demonstrating meter-scale production capability (>90% yield) and humidity-resistant fluorescence, these membranes enable three advanced applications:Tamper-evident security tags with ISO-certified chromatic stability, Wearable UV sensors (3-s response time), Flexible optical waveguides. This strategy establishes a universal framework for manufacturing mechanically durable luminescent materials.
研究领域:
材料科学
·
高分子化学
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纳米技术
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光电子学
·
柔性电子
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防伪技术
·
稀土功能材料
✓ 已验证
产品关联
DOI
高影响因子
Science Advances
·
2022
·Vol. 8
·期 18
·
IF 14.957
Yi Pan,Zhenyu Yang,Chang Li,Sammer Ul Hassan,Ho Cheung Shum
The healthy functioning of the plants’ vasculature depends on their ability to respond to environmental changes. In contrast, synthetic microfluidic systems have rarely demonstrated this environmental responsiveness. Plants respond to environmental stimuli through nastic movement, which inspires us to introduce transformable microfluidics: By embedding stimuli-responsive materials, the microfluidic device can respond to temperature, humidity, and light irradiance. Furthermore, by designing a foldable geometry, these responsive movements can follow the preset origami transformation. We term this device TransfOrigami microfluidics (TOM) to highlight the close connection between its transformation and the origami structure. TOM can be used as an environmentally adaptive photomicroreactor. It senses the environmental stimuli and feeds them back positively into photosynthetic conversion through morphological transformation. The principle behind this morphable microsystem can potentially be extended to applications that require responsiveness between the environment and the devices, such as dynamic artificial vascular networks and shape-adaptive flexible electronics.
研究领域:
植物学
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微流控技术
·
材料科学
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仿生工程
·
光子器件
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）