C 2014 American Chemical Society Charging the Quantum Capacitance of Graphene with a Single Biological Ion Channel

upported lipid bilayers (SLBs) have ri-sen as a robust alternative to the tradi-tional and fragile black membranes for studying ion channel electrophysiology, a key component in biological signaling pathways to passively and selectively trans-port ions across the impermeable cell mem-brane. The traditional approach of forming a lipid bilayer across a microscale aperture is extremely flimsy, requiring high level of expertise, which limits throughput. In con-trast, SLBs are more robust, easy to make, and potentially applicable toward high throughput.14 As an atomically thin 2d material, graphene provides an attractiv