Radiant energy – Inspection of solids or liquids by charged particles
Reexamination Certificate
2006-05-31
2008-09-23
Berman, Jack I. (Department: 2881)
Radiant energy
Inspection of solids or liquids by charged particles
C250S440110, C250S443100, C250S307000
Reexamination Certificate
active
07427755
ABSTRACT:
An electron beam heating device with the temperature up to 2200 K is provided for heating a sample and a tip for a scanning tunneling microscope (STM). The electron beam heating device includes a base stage for mating respectively with an electron beam sample heating carrier and an electron beam tip heating carrier, both carriers include a filament. The integration of the filament into the transferable electron beam sample heating carrier and electron beam tip heating carrier enables filament exchange without venting the vacuum system. A fixed distance between the sample and the filament enables reproducible sample temperature control and the filament is mounted at a back of the sample, allowing optical access for temperature measurement, and allowing sample preparation processes without changing positions of the sample or the filament. Once the tip is loaded, a fixed relative position between the tip and the filament enables reproducible control of heating. A tip holder includes an electrically isolated post connected to the tip, enabling a separate electrical potential to be applied to the tip.
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Ding Haifeng
Li Dongqi
Pearson John E.
Berman Jack I.
Maskell Michael
Pennington Joan
UChicago Argonne LLC
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