With its fast and wide spread,coronavirus disease 2019(COVID-19)caused by a novel coronavirus broke out suddenly in Wuhan,China at the end of 2019.It posed a grave threat to human life and health,and brought massive c...With its fast and wide spread,coronavirus disease 2019(COVID-19)caused by a novel coronavirus broke out suddenly in Wuhan,China at the end of 2019.It posed a grave threat to human life and health,and brought massive challenges to global health.On 30 January 2020,the World Health Organiza-tion(WHO)declared the novel coronavirus constituted a‘public health emergency of international concern’.1 Due to its rapid trans-mission,it drew attention from more than 200 countries and areas worldwide.展开更多
We present and demonstrate a multifunctional single-fiber optical tweezer for particle trapping and transport.The fiber probe of fiber optical tweezers is constructed as a planar structure.Laser sources with wavelengt...We present and demonstrate a multifunctional single-fiber optical tweezer for particle trapping and transport.The fiber probe of fiber optical tweezers is constructed as a planar structure.Laser sources with wavelengths of 650 nm and 980 nm in a single-mode fiber excite the linearly polarized LP11mode and LP01mode beams,respectively.These two laser beams can achieve non-contact trapping and long-distance transport of particles after passing through a flat-facet fiber probe,respectively.This structure makes it possible to perform non-contact trapping and transport of particles by combining multiple wavelengths and multiple modes.展开更多
A novel reconstruction method of nanometer micro-displacement of Fabry-Perot(F-P)interference is proposed in this study.Hilbert transforms are performed for F-P interference fringes,and the obtained signal performs ta...A novel reconstruction method of nanometer micro-displacement of Fabry-Perot(F-P)interference is proposed in this study.Hilbert transforms are performed for F-P interference fringes,and the obtained signal performs tangent operation with the original signal.Finally,the validity of the proposed algorithm and the structure are verified by simulation and several experimental measurements for vibration.Results from the experiments show that the maximum relative error is 4.9%.展开更多
Potassium-ion(K^(+))batteries(PIBs)show great potential in large-scale energy storage applications owing to their low-cost and high-operating voltage.However,the development of practical PIBs remains hindered by their...Potassium-ion(K^(+))batteries(PIBs)show great potential in large-scale energy storage applications owing to their low-cost and high-operating voltage.However,the development of practical PIBs remains hindered by their poor performance rate due to the large ionic radius of the K^(+)(1.38Å).Herein,we report an ionic-drill strategy using smaller lithium ions(Li+)to open diffusion channels for K^(+)in the host electrode and enable much faster kinetics of K-ions.展开更多
基金This research was funded by the National Natural Science Foundation of China(31871171).
文摘With its fast and wide spread,coronavirus disease 2019(COVID-19)caused by a novel coronavirus broke out suddenly in Wuhan,China at the end of 2019.It posed a grave threat to human life and health,and brought massive challenges to global health.On 30 January 2020,the World Health Organiza-tion(WHO)declared the novel coronavirus constituted a‘public health emergency of international concern’.1 Due to its rapid trans-mission,it drew attention from more than 200 countries and areas worldwide.
基金supported by the Joint Guidance Project of Natural Science Foundation of Heilongjiang Province,China(No.LH2021F008)。
文摘We present and demonstrate a multifunctional single-fiber optical tweezer for particle trapping and transport.The fiber probe of fiber optical tweezers is constructed as a planar structure.Laser sources with wavelengths of 650 nm and 980 nm in a single-mode fiber excite the linearly polarized LP11mode and LP01mode beams,respectively.These two laser beams can achieve non-contact trapping and long-distance transport of particles after passing through a flat-facet fiber probe,respectively.This structure makes it possible to perform non-contact trapping and transport of particles by combining multiple wavelengths and multiple modes.
基金supported by the Natural Science Foundation of Northeast Petroleum University (No. 2018GPYB-03)
文摘A novel reconstruction method of nanometer micro-displacement of Fabry-Perot(F-P)interference is proposed in this study.Hilbert transforms are performed for F-P interference fringes,and the obtained signal performs tangent operation with the original signal.Finally,the validity of the proposed algorithm and the structure are verified by simulation and several experimental measurements for vibration.Results from the experiments show that the maximum relative error is 4.9%.
基金supports from the Key-Area Research and Development Program of Guangdong Province(no.2019B090914003)National Natural Science Foundation of China(nos.51822210,51972329,and 51902338)+2 种基金Shenzhen Science and Technology Planning Project(nos.JCYJ20180507182512042,JCYJ20170818153427106,and YJ20170818153404696)Guangdong Basic and Applied Basic Research Foundation(no.2019A1515011902)Science and Technology Planning Project of Guangdong Province(no.2018A050506066).
文摘Potassium-ion(K^(+))batteries(PIBs)show great potential in large-scale energy storage applications owing to their low-cost and high-operating voltage.However,the development of practical PIBs remains hindered by their poor performance rate due to the large ionic radius of the K^(+)(1.38Å).Herein,we report an ionic-drill strategy using smaller lithium ions(Li+)to open diffusion channels for K^(+)in the host electrode and enable much faster kinetics of K-ions.
