Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Nanoscale Spectroscopy Group

Conducts basic research to advance the optical and electrical measurement science infrastructure necessary for innovation in future nanoelectronic & thin-film devices, and their component materials.

The Nanoscale Spectroscopy Group pushes the frontiers of optical spectroscopies (e.g., Raman spectroscopy, spectroscopic ellipsometry, and infrared spectroscopy) and electrical measurements (e.g., magnetotransport, nanoelectronic test structure development, and temperature dependent current-voltage spectroscopy). The Group develops and advances novel measurements that combine and correlate optical and electrical methods such as internal photoemission, magneto-optical spectroscopy, and transient photocurrent spectroscopy. This new metrology supports the measurement and standards needs of the electronics, semiconductor, energy, health, defense, and other industries.

News and Updates

The Shape in Water

Tinkering with a method they helped develop over the last few years, scientists have for the first time used it to

Projects and Programs

Nanoelectronic Device Metrology

The Nanoelectronic Device Metrology (NEDM) project is developing the measurement science infrastructure that will enable innovation and advanced manufacturing

Thin Film Electronics

The Thin Film Electronics Project develops rigorous measurements and methodology needed for continued U.S. leadership in manufacturing and innovation of


Epitaxially-grown self-assembled Bi2Se3/Bi2MnSe4 multilayer heterostructures

Joseph A. Hagmann, Xiang Li, Si-Ning Dong, Sergei Rouvimov, Sujitra J. Pookpanratana, Kin Man Yu, Tatyana Orlova, Curt A. Richter, David G. Seiler, Xinyu Liu, Jacek K. Furdyna, Margaret Dobrowolska
Progress in understanding topologically non-trivial systems offers the promise of predicting novel systems that demonstrate the remarkable properties associated

Interacting nanoscale magnetic cluster arrays in molybdenum oxide bronzes

Joseph A. Hagmann, Son T. Le, Lynn F. Schneemeyer, Joseph A. Stroscio, Tiglet Besara, Theo Siegrist, Curt A. Richter, David G. Seiler
In this study, we examine several reduced ternary molybdates in the family of rare earth molybdenum bronzes produced by electrochemical synthesis with

Tools and Instruments

Raman facility

Raman scattering is a powerful light scattering technique used to diagnose the internal structure of molecules and crystals. In a light scattering experiment



Group Leader