Dimensional characterization of biperiodic imprinted structures using optical scatterometry

Issam Gereige, David Pietroy, Jessica Eid, Cécile Gourgon

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


In this paper, we report on the characterization of biperiodic imprinted structures using a non-destructive optical technique commonly called scatterometry. The nanostructures consist of periodic arrays of square and circular dots which were imprinted in a thermoplastic polymer by thermal nanoimprint lithography. Optical measurements were performed using spectroscopic ellipsometry in the spectral region of 1.5-4 eV. The geometrical profiles of the imprinted structures were reconstructed using the Rigorous Coupled-Wave Analysis (RCWA) to model the diffraction phenomena by periodic gratings. The technique was also adapted for large scale evaluation of the imprint process. Uniqueness of the solution was examined by analyzing the diffraction of the structure at different experimental conditions, for instance at various angles of incidence. © 2013 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)27-30
Number of pages4
JournalMicroelectronic Engineering
StatePublished - Dec 2013

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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