Abstract
We present the design of a contact atomic force microscope (AFM) that can be used to image solid surfaces in aqueous solution up to 150 °C and 6 atm. The main features of this unique AFM are: (1) an inert gas pressurized microscope base containing stepper motor for coarse advance and the piezoelectric tube scanner; (2) a chemically inert membrane separating these parts from the fluid cell; (3) a titanium fluid cell with fluid inlet–outlet ports, a thermocouple port, and a sapphire optical window; (4) a resistively heated ceramic booster heater for the fluid cell to maintain the temperature of solutions sourced from a hydrothermal bomb; and (5) mass flow control. The design overcomes current limitations on the temperature and pressure range accessible to AFM imaging in aqueous solutions. Images taken at temperature and pressure are presented, demonstrating the unit-cell scale (<1 nm) vertical resolution of the AFM under hydrothermal conditions.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 9:50 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 11, 2024, 5 a.m.) |
Indexed | 1 year, 6 months ago (Feb. 19, 2024, 5:05 p.m.) |
Issued | 27 years ago (Aug. 1, 1998) |
Published | 27 years ago (Aug. 1, 1998) |
Published Print | 27 years ago (Aug. 1, 1998) |
@article{Higgins_1998, title={A hydrothermal atomic force microscope for imaging in aqueous solution up to 150 °C}, volume={69}, ISSN={1089-7623}, url={http://dx.doi.org/10.1063/1.1149226}, DOI={10.1063/1.1149226}, number={8}, journal={Review of Scientific Instruments}, publisher={AIP Publishing}, author={Higgins, Steven R. and Eggleston, Carrick M. and Knauss, Kevin G. and Boro, Carl O.}, year={1998}, month=aug, pages={2994–2998} }