Detailed information can be gathered using images acquired from multi-scale imaging at the molecular and macroscopic levels.However,the technical difficulties in combining separate functional units and the impermeabil...Detailed information can be gathered using images acquired from multi-scale imaging at the molecular and macroscopic levels.However,the technical difficulties in combining separate functional units and the impermeability to biological barriers remain two of the biggest challenges in the development of such imaging systems.Herein,we report two manganese(II)compounds(MnFM1 and MnFM2)which showed enhanced stable fluorescence including a two-photon signal and magnetic contrast.These metal complexes were rationally constructed using terpyridine-based ligands and manganese(II)ions with small molecular weights.In particular,MnFM1 demonstrated multi-modal imaging effectiveness based on a d5 electron configuration:the compound displayed not only good penetration into thick tissue with an enhanced magnetic signal but also the capability of two-photon imaging and stimulated emission depletion(STED)super-resolution imaging.Compared to nano-based cross-platform systems,this candidate might open up the possibility of a revolutionised multi-modal imaging technique using metallic probes.展开更多
Melting and solidification of lunar regolith are pivotal for comprehending the evolutionary dynamics of lunar volcanism,geology,and impact history.Additionally,insights gained from these processes can contribute to th...Melting and solidification of lunar regolith are pivotal for comprehending the evolutionary dynamics of lunar volcanism,geology,and impact history.Additionally,insights gained from these processes can contribute to the advancement of in situ resource utilization technologies,for instance additive manufacturing and resource extraction systems.Herein,we conduct the direct observation of the melting and rapid solidification of lunar particles returned by the Chang'E 5 mission.The melting temperature and melting sequence were obtained.Bubble generation,growth,and release were clearly observed,with a maximum bubble diameter of 5μm,which is supposed to be according to the release of volatiles that embedded in the particles.During the solidification process,evident crystallization occurred with incremental crystal growth rate approximately of 27 nm/s.Scanning electron microscopy and energy-dispersive x-ray spectroscopy results verified that the Fe-rich mineral crystalizes first.These results would improve the understanding of the evolution of lunar volcanism,geology,and impact history.展开更多
基金supported by grants from the National Natural Science Foundation of China(21602003,51432001,51672002 and 21871003)Anhui Provincial Natural Science Foundation of China(1708085MC68)+1 种基金Anhui Provincial Returnees Innovation and Entrepreneurship for key support.L.F.X thanks the Science Foundation of the Department Education of Anhui Province(KJ2017ZD49)the Talent foundation of the Education Department of Anhui(gxbjZD2016111).
文摘Detailed information can be gathered using images acquired from multi-scale imaging at the molecular and macroscopic levels.However,the technical difficulties in combining separate functional units and the impermeability to biological barriers remain two of the biggest challenges in the development of such imaging systems.Herein,we report two manganese(II)compounds(MnFM1 and MnFM2)which showed enhanced stable fluorescence including a two-photon signal and magnetic contrast.These metal complexes were rationally constructed using terpyridine-based ligands and manganese(II)ions with small molecular weights.In particular,MnFM1 demonstrated multi-modal imaging effectiveness based on a d5 electron configuration:the compound displayed not only good penetration into thick tissue with an enhanced magnetic signal but also the capability of two-photon imaging and stimulated emission depletion(STED)super-resolution imaging.Compared to nano-based cross-platform systems,this candidate might open up the possibility of a revolutionised multi-modal imaging technique using metallic probes.
基金supported by National Natural Science Foundation of China(Grant No.U22B2092).
文摘Melting and solidification of lunar regolith are pivotal for comprehending the evolutionary dynamics of lunar volcanism,geology,and impact history.Additionally,insights gained from these processes can contribute to the advancement of in situ resource utilization technologies,for instance additive manufacturing and resource extraction systems.Herein,we conduct the direct observation of the melting and rapid solidification of lunar particles returned by the Chang'E 5 mission.The melting temperature and melting sequence were obtained.Bubble generation,growth,and release were clearly observed,with a maximum bubble diameter of 5μm,which is supposed to be according to the release of volatiles that embedded in the particles.During the solidification process,evident crystallization occurred with incremental crystal growth rate approximately of 27 nm/s.Scanning electron microscopy and energy-dispersive x-ray spectroscopy results verified that the Fe-rich mineral crystalizes first.These results would improve the understanding of the evolution of lunar volcanism,geology,and impact history.
