Soft display has been intensively studied in recent years in the wake of rapid development of a variety of soft materials. The currently existing solutions for translating the traditional hard display into the more convenient soft display mainly include light-emitting diodes, liquid crystals, quantum dots, and phosphors. The desired soft display should take the advantages of facile fabrication processes and cheap raw materials. Besides, the device should be colorful, nontoxic, and not only flexible but also stretchable. However, the foregoing devices may not own all of the desired features. Here, a new type of soft display, which consists of dielectric elastomer and photonic crystals that cover all of the features mentioned above and can achieve the color change dynamically and in situ, is reported. In addition to the above features, the angle-dependent characteristic and the excellent mechanical reliability make it a great candidate for the next generation of soft display. Finally, the vast applications of the present concept in a variety of fields are also prospected.
This work systematically investigates the deformation of a soft magneto-active polymeric actuator in the presence of both non-uniform magnetic fields generated by an electromagnet and mechanical loads.
To understand the epidemic situation, epidemiological characteristics and clinical features of imported malaria in Donghai County, Lianyungang City from 2005 to 2015.The epidemiological data of imported malaria in Donghai County from 2005 to 2015 were collected and analyzed by the descriptive epidemiological method.A total of 126 imported malaria cases were reported in Donghai County from 2005 to 2015, including 101 falciparum malaria cases (80.19%), 13 ovale malaria cases (10.32%), 7 vivax malaria cases (5.56%), 4 quartan malaria cases (3.17%), and 1 case with mixed infection (0.79%). These cases were distributed in 14 towns, and mainly in 4 towns namely Niushan, Tuofeng, Shiliu, and Huangchuan, and the cases in the 4 towns accounted for 63.49% of the total cases. The cases occurred in the whole year, but the peak period of the disease was in April, which was related to the returned time of these patients from foreign countries. All the patients were male and aged from 20 to 55 years, and those aged from 20 to 50 years accounted for 90.70%.The epidemic situation of imported malaria presents a rising trend in Donghai County in recent 10 years. To control imported malaria, the above-mentioned 4 towns with more migrant construction workers and businessmen should be treated as key areas. Meanwhile, the floating population management, disposal of the malaria epidemic spots, mosquito vector monitoring as well as health education should be strengthened.[摘要]目的 分析2005-2015年东海县输入性疟疾疫情及流行特征, 掌握该县输入性疟疾发病特点及流行规律。 方法 收集2005-2015年该县输入性疟疾疫情相关资料, 进行描述流行病学分析。 结果 2005-2015年东海县共报告输入 性疟疾126例, 其中恶性疟101例, 占80.19%; 卵形疟13例, 占10.32%; 间日疟7例, 占5.56%; 三日疟4例, 占3.17%; 混合 感染1 例, 占0.79%。病例分布于14 个乡 (镇), 主要集中在牛山、驼峰、石榴、黄川等4 个乡 (镇), 共占病例总数的 63.49%。全年均可发病, 4月出现发病高峰, 与病例归国时间有关。病例均为男性, 年龄20～55岁, 其中25～50岁占 90.70%。 结论 近十年来东海县输入性疟疾疫情呈明显上升趋势, 在防治上应以劳务输出、出国经商人员较多的牛山、 驼峰、石榴、黄川等4个乡 (镇) 为重点, 做好流动人口管理、疫点处置及蚊媒监测, 并加大防治宣传力度。.
Energy absorption structures are widely used in many scenarios. Thin-walled members have been heavily employed to absorb impact energy. This paper presents a novel, Ron Resch origami pattern inspired energy absorption structure. Experimental characterization and numerical simulations were conducted to study the energy absorption of this structure. The results show a new collapse mode in terms of energy absorption featuring multiple plastic hinge lines, which lead to the peak force reduction and larger effective stroke, as compared with the classical honeycomb structure. Overall, the Ron Resch origami-inspired structure and the classical honeycomb structure are quite complementary as energy absorption structures.
Abstract Recently, hydrogels with coloration have attracted researchers from various fields, such as camouflage, anti‐counterfeiting, and soft display. However, existing thermochromic hydrogels are limited by their weak color display performance and insufficient sensitivity. Here proposed is a new kind of thermochromic hydrogel which possesses bright colors, fast response time, and reliable results across a long lifespan. This hydrogel is prepared by embedding temperature‐responsive microcapsules containing three components: color developing agent, leuco agent, and solvent. The critical temperature for color changing of the microcapsule is determined by the phase transfer temperature of the solvent. The macroscopic coloration and discoloration of this hydrogel are fast. Soft display and camouflage are proposed for the practical applications in which the thermochromic hydrogel acts as the chameleon phase and the electrothermal filaments as the driving phase. The thermochromic hydrogel can be readily integrated into heat‐sensing devices and smart clothes.
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