Research into the use of SET devices goes on at both NIST Gaithersburg
(led by
Neil M.
Zimmerman) and NIST Boulder (led by Mark
W. Keller). This page describes the research at NIST Gaithersburg.
Project Summary:
In collaboration with Mark
Keller and Joe Aumentado (NIST Boulder), we here at NIST Gaithersburg
(Neil Zimmerman) are working on using SET devices as a source of electrical
standards. In particular, we are working on producing a fundamental standard
of capacitance, or a metrological experiment to measure alpha (the fine-structure
constant) using a single-electron pump, single-electron transistor, and
cryogenic capacitors. At NIST Gaithersburg, we are currently working on
the latter two topics (left picture above), while NIST Boulder is concentrating
on the first two.
In addition, we are also pursuing a solution to the long-standing "charge offset" problem in SET devices; in 2001, we have started working on Si-based SET devices (right picture above), which appear to hold the promise of much smaller charge offset drift. Our ultimate goal is to parallelize a large number of SET pumps, to deliver a larger value of current.
Publications:
... are available.
Two levels up is the Electricity Division.
Three levels up is the Electronics and Electrical Engineering Laboratory
And, finally, we all work for the National Institute of Standards and Technology.
Neil Zimmerman also has a homepage.
Last modified 8/23/01. neilz at mailaps.org