---
res:
  bibo_abstract:
  - Recent advances in the fabrication of nanostructures and nanoscale features in
    metasurfaces offer new prospects for generating visible light emission from low-energy
    electrons. Here we present the experimental observation of visible light emission
    from low-energy free electrons interacting with nanoscale periodic surfaces through
    the Smith–Purcell (SP) effect. We demonstrate SP light emission from nanoscale
    gratings with periodicity as small as 50 nm, enabling the observation of tunable
    visible radiation from low-energy electrons (1.5 to 6 keV), an order of magnitude
    lower in energy than previously reported. We study the emission wavelength and
    intensity dependence on the grating pitch and electron energy, showing agreement
    between experiment and theory. Our results open the way to the production of SP-based
    nanophotonics integrated devices. Built inside electron microscopes, SP sources
    could enable the development of novel electron–optical correlated spectroscopic
    techniques and facilitate the observation of new quantum effects in light sources.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Aviram
      foaf_name: Massuda, Aviram
      foaf_surname: Massuda
  - foaf_Person:
      foaf_givenName: Charles
      foaf_name: Roques-Carmes, Charles
      foaf_surname: Roques-Carmes
      foaf_workInfoHomepage: http://www.librecat.org/personId=e2e68fc9-6505-11ef-a541-eb4e72cc3e82
  - foaf_Person:
      foaf_givenName: Yujia
      foaf_name: Yang, Yujia
      foaf_surname: Yang
  - foaf_Person:
      foaf_givenName: Steven E.
      foaf_name: Kooi, Steven E.
      foaf_surname: Kooi
  - foaf_Person:
      foaf_givenName: Yi
      foaf_name: Yang, Yi
      foaf_surname: Yang
  - foaf_Person:
      foaf_givenName: Chitraang
      foaf_name: Murdia, Chitraang
      foaf_surname: Murdia
  - foaf_Person:
      foaf_givenName: Karl K.
      foaf_name: Berggren, Karl K.
      foaf_surname: Berggren
  - foaf_Person:
      foaf_givenName: Ido
      foaf_name: Kaminer, Ido
      foaf_surname: Kaminer
  - foaf_Person:
      foaf_givenName: Marin
      foaf_name: Soljačić, Marin
      foaf_surname: Soljačić
  bibo_doi: 10.1021/acsphotonics.8b00743
  bibo_issue: '9'
  bibo_volume: 5
  dct_date: 2018^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2330-4022
  dct_language: eng
  dct_publisher: American Chemical Society @
  dct_subject:
  - light−matter interactions
  - periodic structures
  - nanophotonics
  - free-electron light sources
  dct_title: Smith–Purcell radiation from low-energy electrons@
...