典型文献
Conductive polymer hydrogel-coated nanopipette sensor with tunable size
文献摘要：
Nanopipette-based sensors are one of the most effective tools for detecting nanoparticles, bioparticles, and biomolecules. Quantitative analysis of nanoparticles with different shapes and electrical charges is achieved through measurement of the blockage currents that occur when particles pass through the nanopore. However, typical nanopipette sensors fabricated using a conventional needle-pulling method have a typical pore-diameter limitation of around 100 nm. Herein, we report a novel conductive hydrogel-composited nanopipette sensor with a tunable inner-pore diameter. This is made by electrodepositing poly(3,4-ethylenedioxythiophene) polystyrene sulfonate onto the surface of a nanopipette with a prefabricated sacrificial copper layer. Because of the presence of copper ions, the conductive polymer can stably adhere to the tip of the nanopipette to form a nanopore;when nanoparticles pass through the conductive nanopore, more distinct blocking events are observed. The size of the nanopore can be changed simply by adjusting the electrodeposition time. In this way, suitable nanopores can be obtained for highly sensitive screening of a series of particles with diameters of the order of tens of nanometers.
文献关键词：
中图分类号：
作者姓名：
Lin Li;Feng Zhou;Qiannan Xue
作者机构：
State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University,Tianjin 300072,China;College of Precision Instruments and Optoelectronics Engineering,Tianjin University,Tianjin 300072,China
文献出处：
引用格式：
[1]Lin Li;Feng Zhou;Qiannan Xue-.Conductive polymer hydrogel-coated nanopipette sensor with tunable size)[J].纳米技术与精密工程（英文）,2022(04):18-25
A类：
nanopipette,Nanopipette,electrodepositing
B类：
Conductive,polymer,hydrogel,coated,tunable,size,sensors,are,one,most,effective,tools,detecting,nanoparticles,bioparticles,biomolecules,Quantitative,analysis,different,shapes,electrical,charges,achieved,through,measurement,blockage,currents,that,occur,when,pass,However,typical,using,conventional,needle,pulling,method,have,limitation,around,Herein,report,novel,conductive,composited,inner,This,made,by,ethylenedioxythiophene,polystyrene,sulfonate,onto,surface,prefabricated,sacrificial,copper,layer,Because,presence,ions,can,stably,adhere,tip,form,more,distinct,blocking,events,observed,be,changed,simply,adjusting,electrodeposition,In,this,way,suitable,nanopores,obtained,highly,sensitive,screening,series,diameters,order,tens,nanometers
AB值：
0.577776
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