| Issue |
J. Phys. Colloques
Volume 47, Number C2, Mars 1986
32 nd International Field Emission Symposium / 32ème Symposium International d'Emission de Champ
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|---|---|---|
| Page(s) | C2-401 - C2-407 | |
| DOI | https://doi.org/10.1051/jphyscol:1986262 | |
32 nd International Field Emission Symposium / 32ème Symposium International d'Emission de Champ
J. Phys. Colloques 47 (1986) C2-401-C2-407
DOI: 10.1051/jphyscol:1986262
1 Sandia National Laboratories, Surface Science Division 1134, Albuquerque, NM 87185, U.S.A.
2 The University of New Mexico, Department of Physics and Astronomy, Albuquerque, NM. 87123, U.S.A.
J. Phys. Colloques 47 (1986) C2-401-C2-407
DOI: 10.1051/jphyscol:1986262
PROTEIN REMOVAL FROM TUNGSTEN FIELD-EMITTER TIPS
J.A. PANITZ1 et D.R. SANDISON21 Sandia National Laboratories, Surface Science Division 1134, Albuquerque, NM 87185, U.S.A.
2 The University of New Mexico, Department of Physics and Astronomy, Albuquerque, NM. 87123, U.S.A.
Abstract
The removal of protein multilayers, and individual protein molecules from tungsten field-emitter tips is described. Tips exposed to UV radiation for several minutes in air, or to a low pressure glow discharge remain covered with a protein residue that cannot be removed without modifying the tip surface. High temperature pyrolysis in vacuum can remove all protein residue from the surface of a tungsten tip without changing its shape or morphology. A simple method to pyrolyze protein on the surface of a tungsten tip is described. The importance of having a reliable tip cleaning procedure for field-ion and field-electron emission applications is reviewed.