Atomically sharp iridium tip

Details Atomically sharp iridium tip Atomically sharp iridium tip

2007-10-26

2010-06-15

Berman, Jack I (Department: 2881)

Radiant energy

Ion generation

Field ionization type

C977S949000, C977S950000, C977S848000, C977S900000, C850S057000, C850S059000, C850S060000

Reexamination Certificate

active

07737414

ABSTRACT:
A method for preparing an iridium tip with atomic sharpness. The method includes tapering an iridium wire to a needle shape and heating the iridium needle in an oxygen atmosphere. Also disclosed is an iridium needle having a pyramidal structure which terminates with a small number of atoms prepared by the methods.

REFERENCES:
patent: 3775121 (1973-11-01), Sharp
patent: 5630932 (1997-05-01), Lindsay et al.
patent: 6521118 (2003-02-01), Starosvetsky et al.
patent: 7032437 (2006-04-01), Lee et al.
patent: 7098144 (2006-08-01), Zhang et al.
patent: 7408366 (2008-08-01), Wang et al.
patent: 7585474 (2009-09-01), Wong et al.
patent: 2006/0247758 (2006-11-01), Krivoruchko
patent: 2007/0033992 (2007-02-01), Han et al.
patent: 2007/0051900 (2007-03-01), Ward
patent: 2009/0320991 (2009-12-01), Boyle et al.
Kalbitzer et al. (“High Brightness Source for Ion and Electron Beams,” Rev. of Sci. Inst. vol. 60, No. 2, Feb. 1998, pp. 1026-1031.
Nien (“Faceting Induced by ultrathin metal films: structure, electronic properties and reactivity,” Surface Science 438 (1999) 191- 206).
Kounaves (“Iridium based Ultramicroelectrodes: Development and Use in Electrochemical analysis” Platinum Metals Rev. 1990, 34 (3) 131-134).
Harris (“Chemical Etching of SiC” pp. 134-135, Properties of Silicon Carbide. EMIS datareviews series, No. 13, IET 1995).

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