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Fundamental Electrical Measurements Group

The Fundamental Electrical Measurements group supports the nation's infrastructure by providing calibration services in the general areas of resistance and impedance. As part of this mission, the group maintains an active research program in precision measurements based on fundamental constants in the development of quantum electrical standards.

The FEM group uses physical laws, quantum invariants, and ultra-precision measurement techniques to create and refine a core set of experiments used as the US national standards for the ohm, farad, and, in the near future, the kilogram. The group strives to improve the accessibility, reliability, precision, accuracy, and range of values that can be achieved and disseminated from each standard by advancing the state of the art in optical, mechanical, and, of course, electrical systems used in the realization of these units.

News and Updates

Projects and Programs

Electronic Kilogram

This project provides the basis for a new definition of mass, based on unchanging quantum properties of nature rather than a physical artifact. This is

Farad and Impedance Metrology

This project aims to provide the world's best basis for accurate impedance measurements by tying the U.S. legal system of electrical units to the International

Metrology of the Ohm

Resistance standards traceable to NIST provide references for measurements of current at levels from 3000 A to below 20 fA and are used to support a wide

Quantum Conductance

Graphene, discovered in 2004, has truly extraordinary electronic properties that enable new approaches in many areas where conventional materials are running

Publications

A self-assembled graphene ribbon grown on SiC

Author(s)
Bi Y. Wu, Yanfei Yang, Albert F. Rigosi, Jiuning Hu, Hsin Y. Lee, Guangjun Cheng, Vishal Panchal, Mattias Kruskopf, Hanbyul Jin, Kenji Watanabe, Takashi Taniguchi, David B. Newell, Randolph E. Elmquist, Chi-Te Liang

Dielectric properties of Nb_{x}W_{1-x}Se_{2} alloys

Author(s)
Albert F. Rigosi, Heather M. Hill, Sergiy Krylyuk, Nhan V. Nguyen, Angela R. Hight Walker, Albert Davydov, David B. Newell
The growth of transition metal dichalcogenide (TMDC) alloys provides an opportunity to experimentally access information elucidating how optical properties

Awards

2017 APS Fellow - David Newell

The criterion for election is exceptional contributions to the physics enterprise; e.g., outstanding physics research, important...

Contacts

Group Leader