Zobrazeno 1 - 10
of 39
pro vyhledávání: '"C G H Walker"'
Autor:
A.-K. Thamm, J. Wei, J. Zhou, C. G. H. Walker, H. Cabrera, M. Demydenko, D. Pescia, U. Ramsperger, A. Suri, A. Pratt, S. P. Tear, M. M. El-Gomati
Publikováno v:
Applied Physics Letters, 120 (5)
We simulate the electronic system of ejected electrons arising when a tip, positioned few 10 nm away from a surface, is operated in the field emission regime. We find that, by repeated quantum reflections (“quantum skipping”), electrons produced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cfda1ac22b27d49097970364066032c
Autor:
Thomas Michlmayr, Maksym Hennadiiovych Demydenko, C. G. H. Walker, Danilo Pescia, S.P. Tear, T. Bahler, Urs Ramsperger, Ann-Katrin Thamm, M.M. El Gomati, M Bodik, Andrew Pratt
Publikováno v:
2021 34th International Vacuum Nanoelectronics Conference (IVNC).
In this study, we use Scanning Field Emission Microscopy (SFEM) combined with a miniature electron energy analyzer known as a Bessel box to measure electron energy spectra emitted from a sample. Previous studies using SFEM have revealed that the work
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4ac72527fc481bab27347e3abddd0ef
https://doi.org/10.1109/ivnc52431.2021.9600768
https://doi.org/10.1109/ivnc52431.2021.9600768
Autor:
Dimos Poulikakos, Hadi Eghlidi, C. G. H. Walker, Efstratios Mitridis, Thomas Kreiner, Thomas M. Schutzius
Publikováno v:
Nano Letters, 19 (3)
Nano Letters
Nano Letters
Surface fogging is a common phenomenon that can have significant and detrimental effects on surface transparency and visibility. It affects the performance in a wide range of applications including windows, windshields, electronic displays, cameras,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdfdfcde18914a5ee834e0e44f0891c9
https://doi.org/10.1021/acs.nanolett.8b04481
https://doi.org/10.1021/acs.nanolett.8b04481
Publikováno v:
Journal of Microscopy, 279 (3)
Journal of Microscopy
Journal of Microscopy
We report the working of a novel detector design based on a Bessel Box (BB) electron energy analyser in a scanning electron microscope (SEM). We demonstrate the application of our detector for elemental identification through Auger electron detection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4daa4cbd3e2f8ad81f9891f6352f9a41
https://hdl.handle.net/20.500.11850/465894
https://hdl.handle.net/20.500.11850/465894
Autor:
C. G. H. Walker, Cem Kincal, Umut Kamber, Ashish Suri, Oguzhan Gurlu, Andrew Pratt, Mohamed M. El-Gomati, S. P. Tear
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena, 241
The interpretation of images generated by scanning electron microscopes (SEMs) requires quantifiable and well-understood contrast. Furthermore, recent interest in probing samples using low-energy electrons to extract surface information is pushing to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57ee1722fa0669976e44c9d83ee31eae
https://hdl.handle.net/20.500.11850/424334
https://hdl.handle.net/20.500.11850/424334
Autor:
Matthias Reininger, C. G. H. Walker, Sebastian Lerch, Hadi Eghlidi, Athanasios Milionis, Dimos Poulikakos, Thomas M. Schutzius
Publikováno v:
ACS Nano, 12 (8)
ACS Nano
ACS Nano
Ice nucleation from vapor presents a variety of challenges across a wide range of industries and applications including refrigeration, transportation, and energy generation. However, a rational comprehensive approach to fabricating intrinsically icep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3752332aefe8bc3957b1b02bc0209323
https://doi.org/10.1021/acsnano.8b03554
https://doi.org/10.1021/acsnano.8b03554
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 415:17-24
The transmission of electrons with energies 15 keV and 30 keV through Si and Au films of 100 nm thickness each have been studied in a Scanning Transmission Electron Microscope. The electrons that were transmitted through the films were detected using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e736ac4dc45ab4b5aa83e295e627e76
https://doi.org/10.1016/j.nimb.2017.10.034
https://doi.org/10.1016/j.nimb.2017.10.034
Publikováno v:
Surface and Interface Analysis. 49:34-46
A new form of charged particle energy analyser is proposed. It is broadly based on the 180° magnetic spectrograph, but is intended to detect charged particles moving out of the dispersion plane with a helical motion. The analyser has the capability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6af43033b07c5307bc8a52d689134b94
https://doi.org/10.1002/sia.6055
https://doi.org/10.1002/sia.6055
Autor:
C. G. H. Walker, Wolfgang S. M. Werner
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 241:146957
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::692d593edbaa329216d35c50a4d6d3e2
https://doi.org/10.1016/j.elspec.2020.146957
https://doi.org/10.1016/j.elspec.2020.146957
Publikováno v:
2018 31st International Vacuum Nanoelectronics Conference (IVNC)
A miniature electron energy analyzer (Bessel box – BB) is described. The trajectory of electrons in the BB is simulated and results obtained using the BB are compared with these simulations. Its use in the Near Field Emission Scanning Electron Micr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::deff6e863c618f9ee7190c1c56336db2
https://doi.org/10.1109/ivnc.2018.8520102
https://doi.org/10.1109/ivnc.2018.8520102