title: Electrostatic control of ions and molecules in nanofluidic transistors.
abstract: We report a nanofluidic transistor based on a metal-oxide-solution (MOSol) system that is similar to a metal-oxide-semiconductor field-effect transistor (MOSFET). Using a combination of fluorescence and electrical measurements, we demonstrate that gate voltage modulates the concentration of ions and molecules in the channel and controls the ionic conductance. Our results illustrate the efficacy of field-effect control in nanofluidics, which could have broad implications on integrated nanofluidic circuits for manipulation of ions and biomolecules in sub-femtoliter volumes.
authors.affiliation: Department of Mechanical Engineering, University of California, Berkeley, California 94720, USA.
authors.forename: Rohit
authors.initials: R
authors.lastname: Karnik
authors.forename: Rong
authors.initials: R
authors.lastname: Fan
authors.forename: Min
authors.initials: M
authors.lastname: Yue
authors.forename: Deyu
authors.initials: D
authors.lastname: Li
authors.forename: Peidong
authors.initials: P
authors.lastname: Yang
authors.forename: Arun
authors.initials: A
authors.lastname: Majumdar
mesh_terms: D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007477:Ions; D044085:Microfluidics / Q000295:instrumentation* / Q000379:methods; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D055672:Static Electricity; D014173:Transistors, Electronic
chemical_list: D007477:Ions