title: Suspended Solid-state Membranes on Glass Chips with Sub 1-pF Capacitance for Biomolecule Sensing Applications.
abstract: Solid-state membranes are finding use in many applications in nanoelectronics and nanomedicine, from single molecule sensors to water filtration, and yet many of their electronics applications are limited by the relatively high current noise and low bandwidth stemming from the relatively high capacitance (>10 pF) of the membrane chips. To address this problem, we devised an integrated fabrication process to grow and define circular silicon nitride membranes on glass chips that successfully lower the chip capacitance to below 1 pF. We use these devices to demonstrate low-noise, high-bandwidth DNA translocation measurements. We also make use of this versatile, low-capacitance platform to suspend other thin, two-dimensional membrane such as graphene.
authors.affiliation: Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
authors.forename: Adrian
authors.initials: A
authors.lastname: Balan
authors.affiliation: Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
authors.forename: Chen-Chi
authors.initials: CC
authors.lastname: Chien
authors.affiliation: Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
authors.forename: Rebecca
authors.initials: R
authors.lastname: Engelke
authors.affiliation: Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA.
authors.forename: Marija
authors.initials: M
authors.lastname: Drndić
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation / Q000379:methods; D025802:Electric Capacitance; D004581:Electronics / Q000295:instrumentation / Q000379:methods; D008567:Membranes, Artificial; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods
chemical_list: D008567:Membranes, Artificial