Uroflowmetry is an uroflow measurement technique used to record the voided volume(VV)and flow rate,which can help clinicians objectively evaluate lower urinary tract function.Currently,few uroflowmetry studies have fo...Uroflowmetry is an uroflow measurement technique used to record the voided volume(VV)and flow rate,which can help clinicians objectively evaluate lower urinary tract function.Currently,few uroflowmetry studies have focused on the female population,[1]especially on the uroflow curve standard analysis.Hence,we sought to establish dependable uroflow reference values and nomograms for Chinese women and to evaluate the relationship between uroflow patterns and demographic data.展开更多
At present,study on dynamic tensile properties and atomic chain fabrication of single nanowire,for understanding its dynamic tensile properties and unique physical properties of atomic chain to fabricate atom scale de...At present,study on dynamic tensile properties and atomic chain fabrication of single nanowire,for understanding its dynamic tensile properties and unique physical properties of atomic chain to fabricate atom scale devices,is one of frontier research issues in nanoscale science.However,how to assemble single nanowire on a tensible microstructure becomes one of the most difficult problems,which severely restricts the development of this research field.In this paper,after the ultrahigh tensible microelectrode chip is fabricated by MEMS technology,hexamethyldisilazane is utilized to improve hydrophobicity of the chip,and then a microdroplet dielectrophoresis experimental platform and technology is developed to assemble single nanowire on the sensible microelectrode.Experimental results show that accurate and efficient assembly of single Cu nanowire is realized,which contribute greatly to the further research of dynamic tensile properties and atomic chain fabrication.And for guiding the assembly experiments,finite element technology is also utilized to analyze the local microelectro field around the microelectrodes during dieletrophoresis experiments.展开更多
Nowadays,one of the bottlenecks which hinder the development and application of carbon nanotube(CNT)nano device is that no pure semiconducting CNT(s-CNT)or metallic CNT(m-CNT)can be obtained,and for solving this probl...Nowadays,one of the bottlenecks which hinder the development and application of carbon nanotube(CNT)nano device is that no pure semiconducting CNT(s-CNT)or metallic CNT(m-CNT)can be obtained,and for solving this problem scientists proposed some methods on preparation or separation,but all the results still should be detected and feedback to the process for further improving the preparation and separation methods.Thus,it is very important to measure and distinguish the electrical properties of CNT.For that,scientists proposed a method to measure CNT electrical properties based on DC electrostatic force microscope(EFM)mode,which distinguishes m-CNT from s-CNT according to different scan line shape to CNT with different electrical properties.But,we discovered that the probe lift-up height will seriously affect the shape of the scan line,which makes this method not reliable in distinguishing m-CNT from s-CNT.In this paper,the authors deeply researched the influence of probe lift-up height and also gave corresponding theoretical analysis and explanation,which will greatly improve the method of detecting CNT electrical properties by EFM.展开更多
文摘Uroflowmetry is an uroflow measurement technique used to record the voided volume(VV)and flow rate,which can help clinicians objectively evaluate lower urinary tract function.Currently,few uroflowmetry studies have focused on the female population,[1]especially on the uroflow curve standard analysis.Hence,we sought to establish dependable uroflow reference values and nomograms for Chinese women and to evaluate the relationship between uroflow patterns and demographic data.
基金supported by the National Natural Science Foundation of China(51375477 and 61375091)the CAS FEA International Partnership Program for Creative Research Teams
文摘At present,study on dynamic tensile properties and atomic chain fabrication of single nanowire,for understanding its dynamic tensile properties and unique physical properties of atomic chain to fabricate atom scale devices,is one of frontier research issues in nanoscale science.However,how to assemble single nanowire on a tensible microstructure becomes one of the most difficult problems,which severely restricts the development of this research field.In this paper,after the ultrahigh tensible microelectrode chip is fabricated by MEMS technology,hexamethyldisilazane is utilized to improve hydrophobicity of the chip,and then a microdroplet dielectrophoresis experimental platform and technology is developed to assemble single nanowire on the sensible microelectrode.Experimental results show that accurate and efficient assembly of single Cu nanowire is realized,which contribute greatly to the further research of dynamic tensile properties and atomic chain fabrication.And for guiding the assembly experiments,finite element technology is also utilized to analyze the local microelectro field around the microelectrodes during dieletrophoresis experiments.
基金supported by the National Natural Science Foundation of China (51005230, 61107043, 61375091, 51375477)the CAS FEA International Partnership Program for Creative Research Teams
文摘Nowadays,one of the bottlenecks which hinder the development and application of carbon nanotube(CNT)nano device is that no pure semiconducting CNT(s-CNT)or metallic CNT(m-CNT)can be obtained,and for solving this problem scientists proposed some methods on preparation or separation,but all the results still should be detected and feedback to the process for further improving the preparation and separation methods.Thus,it is very important to measure and distinguish the electrical properties of CNT.For that,scientists proposed a method to measure CNT electrical properties based on DC electrostatic force microscope(EFM)mode,which distinguishes m-CNT from s-CNT according to different scan line shape to CNT with different electrical properties.But,we discovered that the probe lift-up height will seriously affect the shape of the scan line,which makes this method not reliable in distinguishing m-CNT from s-CNT.In this paper,the authors deeply researched the influence of probe lift-up height and also gave corresponding theoretical analysis and explanation,which will greatly improve the method of detecting CNT electrical properties by EFM.
