Inexpensive ultrahigh vacuum heatable/coolable xyz-rotary motion sample manipulator

Abstract

A simple design for a heatable, coolable, rotable sample manipulator, suitable for ultrahigh vacuum (UHV) applications, is described. Highlights of the design include using a combination power/thermocouple feedthrough for heating, cooling, and temperature measurement; and the use of primarily "off-the-shelf " components available from most UHV components vendors. The described manipulator is capable of sample cooling to ~100 K, sample heating to above 900 K, while maintaining 360 o of rotary motion, ~1 in. of x and y motion, and 2 in. of z motion. A simple design for a heatable, coolable, rotatable sample manipulator, suitable for ultrahigh vacuum (UHV) applications, is described. Highlights of the design include using a combination power/thermocouple feedthrough for heating, cooling, and temperature measurement; and the use of primarily "off-the-shelf" components available from most UHV components vendors. The described manipulator is capable of sample cooling to -100 K, sample heating to above 900 K, while maintaining 360" of rotary motion, -1 in. of x and y motion, and 2 in. of z motion. The apparatus can be assembled for approximately $5500 (all new parts) and uses about 3 / of liquid N2 per day. Q I995 American Institute of Physics.

Methanethiol Adsorption on Defective MoS2(0001) Surfaces

“…The sample was resistively heated by passing current through the tantalum sheet, while the sample cooling was by conduction through the copper blocks in thermal contact with liquid nitrogen. The sample mounting arrangement has been described in more detail elsewhere …”

“…The sample mounting arrangement has been described in more detail elsewhere. 36 Temperature-programmed desorption (TPD) experiments were performed using a Leybold Inficon Transpector H200M quadropole mass spectrometer. The mass spectrometer sensing unit was fitted with a quartz nose cone containing a 1 mm hole, which minimizes background desorption signals from the manipulator and sample support hardware.…”

Ethanethiol Decomposition Pathways on MoS2(0001)

“…Sample temperature was monitored using a type K thermocouple held in contact with the back of the sample using Aremco type 569 Ceramabond ceramic cement. Using this apparatus, the sample could be cooled to ∼100 K and heated to ∼1000 K. A more detailed description of the heating and cooling apparatus is described elsewhere …”

Reaction of 1,2-ethanedithiol on clean, sulfur-modified, and carbon-modified Mo (110) surfaces

“…24 TPD experiments were performed using a Leybold Inficon Transpector H200M quadrapole mass spectrometer. The normal operating pressure of the system during experimentation was р1ϫ10 Ϫ9 Torr.…”