We demonstrate a technique for simultaneously fabricating arrays of electromigrated nanogaps using a single-ramp feedback-controlled voltage clamp. The parallel formation is achieved by controlling the applied bias with a voltage clamp directly adjacent to a nanogap array containing low-impedance shunts. Self-balancing of the electromigration permits the two voltage leads to fix the applied voltage across all the forming nanogaps simultaneously. This single-ramp feedback-controlled voltage clamp method is at least a 100 times faster than previous work utilizing computer feedback control of parallel nanojunctions and also circumvents the deleterious thermal runaway that occurs in the conventional single-ramp technique.
|Number of pages||4|
|Journal||IEEE Transactions on Nanotechnology|
|State||Published - Jul 2011|
Bibliographical noteFunding Information:
Manuscript received May 10, 2010; revised July 27, 2010; accepted September 15, 2010. Date of publication September 23, 2010; date of current version July 8, 2011. This work was supported by the National Science Foundation (NSF) under Grant DMR-0805136, by the Kentucky NSF Experimental Program to Stimulate Competitive Research (EPSCoR) program under Award EPS-0814194, and by the Center for Advanced Materials (CAM), University of Kentucky (UK). The review of this paper was arranged by Associate Editor G. Ramanath.
- molecular electronics
- nanogap electrodes
- parallel nanogaps
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering