摘要：Wearable bioelectronic devices have the capacity for real-time human health monitoring,the provision of tailored services,and natural interaction with smart ***,these wearable bioelectronic devices rely on conventional rigid batteries that are frequently charged or replaced and are incompatible with the skin,leading to a discontinuity in complex therapeutic tasks related to human health monitoring and human-machine *** triboelectric nanogenerator(TENG)is a high-efficiency energy harvesting technology that converts mechanical into electrical energy,effectively powering wearable bioelectronic *** study comprehensively overviews recent advances in stretchable TENG for use in wearable bioelectronic *** working mechanism of stretchable TENG is initially explained.A comprehensive discussion presents the approaches for fabricating stretchable TENG,including the design of stretchable structures and the selection of stretchable ***,applications of wearable bioelectronic devices based on stretchable TENG in human health monitoring(body movements,pulse,and respiration)and human-machine interaction(touch panels,machine control,and virtual reality)are ***,the challenges and developmental trends regarding wearable bioelectronic devices based on stretchable TENG are elaborated.

摘要：连翘作为传统中药,具有显著的抗病毒作用,尤其是在治疗新冠肺炎方面。然而,其抗病毒有效化合物及其靶点尚不清楚。本论文利用网络药理学技术筛选连翘中的抗病毒成分和靶标,并利用分子对接技术分析了它们之间的相互作用。最终,从连翘中筛选出11个活性化合物(1–11)和7个抗病毒靶标(AKT1、TP53、MYC、PTEN、CASP8、MMP9和VEGFA),并利用基因本体论分析预测了潜在靶标可能的生物信号通路。基于分子对接结果,我们讨论了活性化合物的构效关系。此外,对活性化合物的吸收、分布、代谢、排泄和毒性(ADMET)特性进行了预测和分析。本研究阐明了连翘多个靶点和途径在治疗病毒性疾病中的协同作用,以及活性化合物的可药用性。本研究为开发和设计新型抗病毒药物提供了依据。

摘要：Photocatalytic water splitting with simultaneous degradation of organic pollutants is an effective strategy to alleviate the increasingly serious energy and environmental ***,the photocatalytic activity is restricted by the high charge recombination rate and limited sunlight ***,black phosphorus(BP)with a broad sunlight response range was utilized as a photosensitizer to enhance the photocatalytic performance of the Au/carbon nitride(CN)*** as-prepared BP/Au/CN exhibited a significantly enhanced H_(2) generation rate of 1400.8µmol h^(−1) g^(−1) under UV-vis light irradiation,which is almost 70 times higher than that of bare CN and BP/CN and 2 folds higher than that of the Au/CN ***,the optimal BP/Au/CN sample presented a waste-to-hydrogen production rate of 195.8µmol h^(−1) g^(−1) with the degradation of bisphenol A,verifying the synergistic effect of the ternary *** photocatalytic mechanism was systematically studied by the combination of experiments and theoretical *** improved photocatalytic performance was derived from the overall sunlight absorption ability of BP,effective electron transfer media and plasmonic character of Au nanoparticles,as well as the matched work function and strong interaction of the three components.A unidirectional electron transfer from BP to Au and then to CN was established,which effectively improved the charge transfer capability,resulting from the appropriate Ohmic contact of Au and BP and the Schottky barrier constructed in Au/CN hybrid.

摘要：Cryobioprinting has tremendous potential to solve problems to do with lack of shelf availability in traditional bioprinting by combining extrusion bioprinting and *** order to ensure the viability of cells in the frozen state and avoid the possible toxicity of dimethyl sulfoxide(DMSO),DMSO-free bioink design is critical for achieving successful cryobioprinting.A nontoxic gelatin methacryloyl-based bioink used in cryobioprinting is composed of cryoprotective agents(CPAs)and a buffer *** selection and ratio of CPAs in the bioink directly affect the survival of cells in the frozen ***,the development of universal and efficient cryoprotective bioinks requires extensive *** first compared two commonly used CPA formulations via experiments in this *** show that the effect of using ethylene glycol as the permeable CPA was 6.07%better than that of *** datasets were obtained and four machinelearning models were established to predict experimental *** predictive powers of multiple linear regression(MLR),decision tree(DT),random forest(RF),and artificial neural network(ANN)approaches were compared,suggesting an order of ANN>RF>DT>*** final selected ANN model was then applied to another *** reveal that this machine-learning method can accurately predict the effects of cryoprotective bioinks composed of different *** also suggest that the formulations presented here have *** findings are likely to greatly accelerate research and development on the use of bioinks for cryobioprinting.

摘要：Flexible energy storage devices are becoming indispensable new elements of wearable electronics to improve our living *** the main energy storage devices,lithium-ion batteries(LIBs)are gradually approaching their theoretical limit in terms of energy *** recent years,lithium metal batteries(LMBs)with metallic Li as the anode are revived due to the extremely high energy density,and are considered to be one of the ideal alternatives for the next generation of flexible power *** this review,key technologies and scientific problems to be overcome for flexible LMBs are ***,the recent advances in flexible LMBs,including the design of flexible Li metal anodes,electrolytes,cathodes and interlayers,are *** addition,we have summed up the research progress of flexible device configurations,and emphasized the importance of flexibility evaluation and functionality integration to ensure the wearing safety in complex ***,the challenges and future development of flexible LMBs are summarized and prospected.

摘要：The process of wound healing is routinely evaluated by histological evaluation in the clinic,which may cause scarring and secondary *** confocal microscopy(RCM)represents a noninvasive,real-time imaging technique that allows in vivo evaluation of the *** RCM was wide-probe-based,which limited its application on uneven and covered *** this study,we report the development of a portable reflectance confocal microscope(PRCM)in which all components were assembled in a handheld *** the size and weight of the PRCM were reduced based on the use of a microelectromechanical system,the resolution was kept at 0.91μm,and the field of view of the system was 343μm×532μ*** used in vivo,the PRCM was able to visualize cellular and nuclear morphology for both mouse and human *** evaluations were then performed on wounds after topically applied mesenchymal stem cells(MSCs)or saline *** PRCM allowed visualization of the formation of collagen bundles,re-epithelization from the wound edge to the wound bed,and hair follicle regeneration,which were consistent with histological ***,we offer new insights into monitoring the effects of topically applied MSCs on the process of wound healing by using *** study illustrates that the newly developed PRCM represents a promising device for real-time,noninvasive monitoring of the dynamic process of wound healing,which demonstrates its potential to diagnose,monitor,or predict disease in clinical wound therapy.

摘要：Heterostructure engineering holds exceptional promise for the development of high-performance electrocatalysts for overall water ***,production of inexpensive and high-efficiency bifunctional electrocatalysts remains a ***,we demonstrate a simple method to synthesize a paper-mulberry(Broussonetia papyrifera)-inspired Co_(9)S_(8)@CoNi_(2)S_(4)/nickel foam(Co_(9)S_(8)@CoNi_(2)S_(4)/NF)heterojunction with high catalytic activity and *** process involves in situ growth of NiCo layered double hydroxide and in situ derivatization of ZIF-67,followed by the S heteroatom *** Co_(9)S_(8)@CoNi_(2)S_(4)/NF benefits from the heterostructure and functional advantages of multidimensional building blocks including one-dimensional(1D)nanowires,2D nanosheets and *** optimized Co_(9)S_(8)@CoNi_(2)S_(4)/NF heterojunction with 10% sulphur content reveals excellent electrocatalytic activity with the lower overpotentials of 68 mV for hydrogen evolution reaction(HER)and 170 mV for oxygen evolution reaction(OER)at 10 mA cm^(-2) in the 1.0 mol L^(-1) KOH solution,which is superior to the recently reported transition metal based *** outstanding performance is attributed to the strong interface coupling between CoNi_(2)S_(4) and Co_(9)S_(8),the advantage of multidimensional structure and the customized electronic *** density functional theory suggests that the interface between Co_(9)S_(8) and CoNi_(2)S_(4) optimizes the adsorption of the multiple intermediates and further facilitates water splitting *** work offers a generic approach for heterostructure engineering design of highperformance catalytic system applications.

摘要：电磁波在无线通信等领域的广泛应用导致了严重的电磁污染,迫切需要研发高性能电磁波吸收材料.本文针对吸波材料阻抗不匹配等关键问题,设计并成功制备了新型核壳LaOCl/LaFeO_(3)纳米纤维电磁波吸收剂.这种独特的一维多级结构由导电LaFeO_(3)磁性壳层和离子化合物LaOCl核层组成.基于介电-磁损耗耦合和阻抗匹配的协同作用,LaOCl/LaFeO_(3)纳米纤维在超低负载条件下(4 w t%),表现出-40.1 d B(2.0 mm)的反射损耗和6.4 GHz(2.4 mm)的有效吸收带宽.该工作提出了一种新型LaOCl/LaFeO_(3)纳米纤维吸波材料,并为阻抗匹配调控和电磁吸波性能优化开辟了新策略.

摘要：高温条件下WS_(2)易于氧化生成WO3,导致WS_(2)固体润滑薄膜的摩擦学性能受到较大影响。为改善WS_(2)固体润滑薄膜在高温条件下的摩擦学性能,采用非平衡磁控溅射技术制备了共掺杂La-Ti/WS_(2)复合薄膜,研究了靶功率对磁控溅射La-Ti/WS_(2)复合薄膜结构和高温摩擦学性能的影响。利用扫描电镜(SEM)、X射线衍射仪(XRD)、纳米压痕仪和X射线光电子能谱仪(XPS)分析了薄膜微观形貌、成分、力学性能、微观结构。利用高温摩擦磨损试验机研究了复合薄膜的高温摩擦学性能。结果表明,高温环境下,靶功率为20W时La-Ti/WS_(2)复合薄膜表现出优异的摩擦学性能。此时,复合薄膜H/E值最大,摩擦系数最小,平均为0.012,磨损率最低为1.56×10^(-8)mm^(3)/N·m,这主要归因于高温下摩擦界面产生的稀土氧化物,促使La-Ti/WS_(2)复合薄膜的摩擦磨损机制发生了改变,使得WS_(2)在高温受破坏的情况下仍然具有优异的摩擦学性能,从而进一步拓展了WS_(2)复合薄膜的工程应用范围。

摘要：高容量材料对于实现锂离子电池高能量密度至关重要.本文通过一种新颖、简便的冷冻干燥与原位镁热还原相结合的方法,以二氧化硅和氧化石墨烯为原料制备了一种高度分散的三维石墨烯包裹多孔纳米硅复合负极材料(P-Si@rGO).该材料具有许多吸引人的特性:高度分散和被单独包覆的硅颗粒,硅和石墨烯之间紧密的Si–O–C相互作用,硅结构的多孔设计以及高孔隙率.这些优点显著增强了电极的反应动力学,赋予了复合材料更大的电接触面积和足够的缓冲空间以应对硅在锂化/脱锂过程中的体积变化,最终使P-Si@rGO获得优异的循环稳定性.本文研究了复合材料的相组成和微观结构对其电化学性能的影响,分析了电极在循环后期容量增加的原因,为硅基负极的功能化演变提供了新的思路.