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| 1 | Optical fiber SPR biosensor complying with a 3D composite hyperbolic metamaterial and a graphene film显示文摘In the present study, an optical fiber surface plasmon resonance(SPR) biosensor was developed for measuring time-and concentration-dependent DNA hybridization kinetics. Its design complies with a 3D Au∕Al2O3 multilayer composite hyperbolic metamaterial(HMM), a graphene film, and a D-shaped plastic optical fiber.According to the numerical simulation and the experimental demonstration, the SPR peak of the designed biosensor can be effectively altered in the range of visible to near-infrared by varying the HMM structure. The sensitivity of the appliance was shown to achieve a value of up to 4461 nm/RIU, allowing its applicability for bulk refractive index sensing. Furthermore, a biosensor designed in this work displayed high-resolution capability(ranging from 10 pM to 100 nM), good linearity, and high repeatability along with a detection limit down to 10 pM, thus suggesting a vast potential for medical diagnostics and clinical applications. | Can Li Jinjuan Gao Muhammad Shafi Runcheng Liu Zhipeng Zha Dejun Feng Mei Liu Xuejian Du Weiwei Yue Shouzhen Jiang | 2021 | Photonics Research2021，9，3： | 3 |
| 2 | Two-stage Optimization for Active Distribution Systems Based on Operating Ranges of Soft Open Points and Energy Storage System显示文摘Due to the lack of flexible interconnection devices,power imbalances between networks cannot be relieved effectively.Meanwhile,increasing the penetration of distributed generators exacerbates the temporal power imbalances caused by large peak-valley load differences.To improve the operational economy lowered by spatiotemporal power imbalances,this paper proposes a two-stage optimization strategy for active distribution networks(ADNs)interconnected by soft open points(SOPs).The SOPs and energy storage system(ESS)are adopted to transfer power spatially and temporally,respectively.In the day-ahead scheduling stage,massive stochastic scenarios against the uncertainty of wind turbine output are generated first.To improve computational efficiency in massive stochastic scenarios,an equivalent model between networks considering sensitivities of node power to node voltage and branch current is established.The introduction of sensitivities prevents violations of voltage and current.Then,the operating ranges(ORs)of the active power of SOPs and the state of charge(SOC)of ESS are obtained from models between networks and within the networks,respectively.In the intraday corrective control stage,based on day-ahead ORs,a receding-horizon model that minimizes the purchase cost of electricity and voltage deviations is established hour by hour.Case studies on two modified ADNs show that the proposed strategy achieves spatiotemporal power balance with lower cost compared with traditional strategies. | Can Wang Jianjun Sun Meng Huang Xiaoming Zha Wei Hu | 2023 | Journal of Modern Power Systems and Clean Energy2023，11，1： | 1 |
| 3 | Divergent Synthesis of Organofluorinated Molecules from Titanium Mediated Deoxygenation of Free Alcohols显示文摘Comprehensive Summary Alcohols as among the most widely occurring organic compounds known,deoxygenative transformations of free alcohols as partners in radical addition reactions remain formidable challenges with great opportunities to achieve new and useful transformations.Herein,we report a protocol via C—O bond cleavage and C—C bond-forming reaction of trifluoromethyl alkenes with free alcohols assisted by titanium reagents via a deoxygenative radical strategy,enabling the divergent synthesis for functional-group-rich organofluorinated compounds in high efficiencies.In this transformation,tertiary alcohols by Ti-catalysis could be converted to trifluoromethyl alkanes without defluorination in acidic conditions,while benzyl alcohols are employed by Ti-mediated activation to supply the gem-difluoroalkenes with defluorination in the presence of a base.This protocol is applicable for a broad range of trifluoromethyl alkenes with good functional group tolerance and a variety of tertiary alcohols and benzyl alcohols(including primary。 | Hongjun Tian Ruifeng Zhang Lei Shi Can Zha Xiaoming Wang | 2023 | Chinese Journal of Chemistry2023，41，15： | 0 |
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