Dynamic topological photonics is a novel research field, combining the time-domain optics and topological physics.In this review, the recent progress and realization platforms of dynamic topological photonics have bee...Dynamic topological photonics is a novel research field, combining the time-domain optics and topological physics.In this review, the recent progress and realization platforms of dynamic topological photonics have been well introduced.The definition, measurement methods and the evolution process of the dynamic topological photonics are demonstrated to better understand the physical diagram. This review is meant to bring the readers a different perspective on topological photonics, grasp the advanced progress of dynamic topology, and inspire ideas about future prospects.展开更多
目的:观察金乌骨通胶囊治疗膝关节骨性关节炎的临床疗效。方法:将80例患者随机分为2组,每组40例。2组均给予玻璃酸钠关节腔注射治疗,2 m L/次,1次/周。观察组同时服用金乌骨通胶囊,3次/d,3粒/次。2组均连续治疗5周。观察2组治疗前后疼...目的:观察金乌骨通胶囊治疗膝关节骨性关节炎的临床疗效。方法:将80例患者随机分为2组,每组40例。2组均给予玻璃酸钠关节腔注射治疗,2 m L/次,1次/周。观察组同时服用金乌骨通胶囊,3次/d,3粒/次。2组均连续治疗5周。观察2组治疗前后疼痛视觉模拟评分(VAS评分)、膝关节Lysholm关节功能评分、膝关节活动度(ROM)评分及临床疗效。结果:膝关节VAS评分治疗前后2组组内比较差异有统计学意义(P<0.05),治疗后组间比较差异也有统计学意义(P<0.05)。干预后ROM角度、Lysholm膝关节评分2组比较,差异有统计学意义(P<0.05)。优良率观察组为95.0%,对照组为75.0%,2组比较差异有统计学意义(P<0.05)。结论:金乌骨通胶囊治疗膝关节骨性关节炎,能显著缓解膝关节疼痛,改善关节活动能力,提高临床疗效。展开更多
The abnormal transmittance in the dielectric band edge of a polystyrene opal is observed and analysed. The transmittance is periodically modulated and the period of modulation varies with the wavelength, which destroy...The abnormal transmittance in the dielectric band edge of a polystyrene opal is observed and analysed. The transmittance is periodically modulated and the period of modulation varies with the wavelength, which destroys the perfect structure of the photonic band gap. The transmittance modulation originates from the propagation of the low order whispering-gallery mode excited in polystyrene spheres. These results indicate that the whisperinggallery mode has a great influence on practical applications of polystyrene opal.展开更多
A high-quality two-dimensional polystyrene photonic crystal is fabricated by the method of focused ion beam etching. The scanning electron microscopy (SEM) and the transmittance spectrum are used to characterize the p...A high-quality two-dimensional polystyrene photonic crystal is fabricated by the method of focused ion beam etching. The scanning electron microscopy (SEM) and the transmittance spectrum are used to characterize the properties of the photonic crystal. The measured transmittance spectrum is in agreement with the theoretical one. The influences of the disorders caused by the random perturbations in the diameter or the position of the air holes on the photonic band structure are analysed. It is found that the phtonic bandgap can tolerate less than 10% degree of disorder.展开更多
We propose a model for two-dimensional photonic materials constructed on a kind of fractal structures. Total energy flows of the photonic materials constructed with either dielectric cylinders or air holes show that ...We propose a model for two-dimensional photonic materials constructed on a kind of fractal structures. Total energy flows of the photonic materials constructed with either dielectric cylinders or air holes show that both of them possess absolute gaps for the electromagnetic waves.展开更多
基金Project supported by the National Key Research and Development Program of China (Grant No.2018YFB2200403)the National Natural Science Foundation of China (Grant Nos.91950204 and 92150302)。
文摘Dynamic topological photonics is a novel research field, combining the time-domain optics and topological physics.In this review, the recent progress and realization platforms of dynamic topological photonics have been well introduced.The definition, measurement methods and the evolution process of the dynamic topological photonics are demonstrated to better understand the physical diagram. This review is meant to bring the readers a different perspective on topological photonics, grasp the advanced progress of dynamic topology, and inspire ideas about future prospects.
文摘目的:观察金乌骨通胶囊治疗膝关节骨性关节炎的临床疗效。方法:将80例患者随机分为2组,每组40例。2组均给予玻璃酸钠关节腔注射治疗,2 m L/次,1次/周。观察组同时服用金乌骨通胶囊,3次/d,3粒/次。2组均连续治疗5周。观察2组治疗前后疼痛视觉模拟评分(VAS评分)、膝关节Lysholm关节功能评分、膝关节活动度(ROM)评分及临床疗效。结果:膝关节VAS评分治疗前后2组组内比较差异有统计学意义(P<0.05),治疗后组间比较差异也有统计学意义(P<0.05)。干预后ROM角度、Lysholm膝关节评分2组比较,差异有统计学意义(P<0.05)。优良率观察组为95.0%,对照组为75.0%,2组比较差异有统计学意义(P<0.05)。结论:金乌骨通胶囊治疗膝关节骨性关节炎,能显著缓解膝关节疼痛,改善关节活动能力,提高临床疗效。
文摘The abnormal transmittance in the dielectric band edge of a polystyrene opal is observed and analysed. The transmittance is periodically modulated and the period of modulation varies with the wavelength, which destroys the perfect structure of the photonic band gap. The transmittance modulation originates from the propagation of the low order whispering-gallery mode excited in polystyrene spheres. These results indicate that the whisperinggallery mode has a great influence on practical applications of polystyrene opal.
文摘A high-quality two-dimensional polystyrene photonic crystal is fabricated by the method of focused ion beam etching. The scanning electron microscopy (SEM) and the transmittance spectrum are used to characterize the properties of the photonic crystal. The measured transmittance spectrum is in agreement with the theoretical one. The influences of the disorders caused by the random perturbations in the diameter or the position of the air holes on the photonic band structure are analysed. It is found that the phtonic bandgap can tolerate less than 10% degree of disorder.
文摘We propose a model for two-dimensional photonic materials constructed on a kind of fractal structures. Total energy flows of the photonic materials constructed with either dielectric cylinders or air holes show that both of them possess absolute gaps for the electromagnetic waves.
