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Research Highlight | Center for Nanoscale Materials

Plasmonic coupling imaged with ultrafast electron microscopy

In a study published in Nano Letters, researchers used ultrafast electron microscopy to probe material dynamics at the nanoscale.

Scientific Achievement

Ultrafast electron microscopy (UEM) was used to image local plasmonic coupling between single gold nanocapsules and graphene step edges at the nanometer scale.

Significance and Impact

An understanding of the plasmonic coupling mechanism in these hybrid systems is of vital importance to their applications for optoelectronics, surface enhanced scattering, biosensing and quantum information.

Research Details

  • Experiments were carried out on the newly established UEM at the Center for Nanoscale Materials (CNM).
  • Results indicate the proximity of a step in the graphene to the nanocapsule causes asymmetric surface charge density at the ends of the nanocapsules.

Work was performed in part at the CNM.


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About Argonne’s Center for Nanoscale Materials
The Center for Nanoscale Materials is one of the five DOE Nanoscale Science Research Centers, premier national user facilities for interdisciplinary research at the nanoscale supported by the DOE Office of Science. Together the NSRCs comprise a suite of complementary facilities that provide researchers with state-of-the-art capabilities to fabricate, process, characterize and model nanoscale materials, and constitute the largest infrastructure investment of the National Nanotechnology Initiative. The NSRCs are located at DOE’s Argonne, Brookhaven, Lawrence Berkeley, Oak Ridge, Sandia and Los Alamos National Laboratories. For more information about the DOE NSRCs, please visit https://​sci​ence​.osti​.gov/​U​s​e​r​-​F​a​c​i​l​i​t​i​e​s​/​U​s​e​r​-​F​a​c​i​l​i​t​i​e​s​-​a​t​-​a​-​G​lance.

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The U.S. Department of Energy’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States and is working to address some of the most pressing challenges of our time. For more information, visit https://​ener​gy​.gov/​s​c​ience.