We report on the first observation of the neutron-rich nucleus^(131)Ag.This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams,including 134,135Sn.The secondary beams were prod...We report on the first observation of the neutron-rich nucleus^(131)Ag.This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams,including 134,135Sn.The secondary beams were produced from induced fission reactions from a stable 238U beam at 345 MeV/nucleon.Secondary reaction residues were selected by the ZeroDegree spectrometer and identified by measuring their magnetic rigidity,time of flight,energy loss,and total kinetic energy.展开更多
Energy harvesting was demonstrated in hydrothermal PZT nanocrystal films driven by ultra-sound.With high temperature sintering and solution infiltration,PZT films with nanograin sizewas found to exhibit bulk-like prop...Energy harvesting was demonstrated in hydrothermal PZT nanocrystal films driven by ultra-sound.With high temperature sintering and solution infiltration,PZT films with nanograin sizewas found to exhibit bulk-like properties such as large remnant polarization of 42μC/cm^(2).Withthe bulk-like properties,a packaged PZT film device was demonstrated to be capable of convertingmechanical energy carried by the ultrasonic wave into electrical energy in a reliable and efficient way.The result suggests an alternative potential solution for energy harvesting application.展开更多
This paper describes a method to estimate the direction from which the signal molecule reaches the sensor by using living cells.In this context,biohybrid sensors that utilize a sophisticated sensing system of cells ca...This paper describes a method to estimate the direction from which the signal molecule reaches the sensor by using living cells.In this context,biohybrid sensors that utilize a sophisticated sensing system of cells can potentially offer high levels of chemicaldetection sensitivity and selectivity.However,biohybrid-sensor-based chemical-source-direction estimation has not received research attention because the cellular response to chemicals has not been examined in the context of directional information.In our approach,we fabricated a device that can limit the interface between the cell-laden hydrogel and the chemical solution of interest to enhance the time difference over which the chemical solution reaches the cells.Chemical detection by cells that express specific receptors is reflected as the fluorescence of the calcium indicator within the cells.Our device has eight chambers that each house 3D cell-laden collagen hydrogels facing circularly outward.The device also works as a cover to prevent chemicals from permeating the hydrogel from above.In our study,by observing the time course of the fluorescence emission of each chamber,we were able to successfully estimate the chemical-source direction within an error range of 7-13°.Our results suggest that a combination of microstructure devices embedded with living cells can be used to exploit cell functionalities to yield chemical-source directional information.展开更多
基金the National Basic Research Program of China under Grant No 2013CB834402the National Natural Science Foundation of China under Grant Nos 11035001 and 11275011.
文摘We report on the first observation of the neutron-rich nucleus^(131)Ag.This isotope was produced via fragmentation reactions of intense secondary radioactive ion beams,including 134,135Sn.The secondary beams were produced from induced fission reactions from a stable 238U beam at 345 MeV/nucleon.Secondary reaction residues were selected by the ZeroDegree spectrometer and identified by measuring their magnetic rigidity,time of flight,energy loss,and total kinetic energy.
文摘Energy harvesting was demonstrated in hydrothermal PZT nanocrystal films driven by ultra-sound.With high temperature sintering and solution infiltration,PZT films with nanograin sizewas found to exhibit bulk-like properties such as large remnant polarization of 42μC/cm^(2).Withthe bulk-like properties,a packaged PZT film device was demonstrated to be capable of convertingmechanical energy carried by the ultrasonic wave into electrical energy in a reliable and efficient way.The result suggests an alternative potential solution for energy harvesting application.
基金supported by the New Energy and Industrial Technology Development Organization(NEDO)and a JSPS Grantsin-Aid for Scientific(KAKENHI)(Grant Number 19H05322).
文摘This paper describes a method to estimate the direction from which the signal molecule reaches the sensor by using living cells.In this context,biohybrid sensors that utilize a sophisticated sensing system of cells can potentially offer high levels of chemicaldetection sensitivity and selectivity.However,biohybrid-sensor-based chemical-source-direction estimation has not received research attention because the cellular response to chemicals has not been examined in the context of directional information.In our approach,we fabricated a device that can limit the interface between the cell-laden hydrogel and the chemical solution of interest to enhance the time difference over which the chemical solution reaches the cells.Chemical detection by cells that express specific receptors is reflected as the fluorescence of the calcium indicator within the cells.Our device has eight chambers that each house 3D cell-laden collagen hydrogels facing circularly outward.The device also works as a cover to prevent chemicals from permeating the hydrogel from above.In our study,by observing the time course of the fluorescence emission of each chamber,we were able to successfully estimate the chemical-source direction within an error range of 7-13°.Our results suggest that a combination of microstructure devices embedded with living cells can be used to exploit cell functionalities to yield chemical-source directional information.
