---
res:
  bibo_abstract:
  - We present a novel design for an ultracompact, passive light source capable of
    generating ultraviolet and X-ray radiation, based on the interaction of free electrons
    with the magnetic near-field of a ferromagnet. Our design is motivated by recent
    advances in the fabrication of nanostructures, which allow the confinement of
    large magnetic fields at the surface of ferromagnetic nanogratings. Using ab initio
    simulations and a complementary analytical theory, we show that highly directional,
    tunable, monochromatic radiation at high frequencies could be produced from relatively
    low-energy electrons within a tabletop design. The output frequency is tunable
    in the extreme ultraviolet to hard X-ray range via electron kinetic energies from
    1 keV to 5 MeV and nanograting periods from 1 μm to 5 nm. The proposed radiation
    source can achieve the tunability and monochromaticity of current free-electron-driven
    sources (free-electron lasers, synchrotrons, and laser-driven undulators), yet
    with a significantly reduced scale, cost, and complexity. Our design could help
    realize the next generation of tabletop or on-chip X-ray sources.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Sophie
      foaf_name: Fisher, Sophie
      foaf_surname: Fisher
  - 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: Nicholas
      foaf_name: Rivera, Nicholas
      foaf_surname: Rivera
  - foaf_Person:
      foaf_givenName: Liang Jie
      foaf_name: Wong, Liang Jie
      foaf_surname: Wong
  - 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.0c00121
  bibo_issue: '5'
  bibo_volume: 7
  dct_date: 2020^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2330-4022
  dct_language: eng
  dct_publisher: American Chemical Society @
  dct_subject:
  - X-ray sources
  - free electrons
  - nanostructure
  - undulator
  - synchrotron
  - free-electron laser
  dct_title: Monochromatic X-ray source based on scattering from a magnetic nanoundulator@
  fabio_hasPubmedId: ' 32596415'
...