Method and apparatus for measuring shear modulus and viscosity of a monomolecular film
Abstract
Instrument for measuring the shear modulus of a monomolecular film comprises a circular trough having inwardly sloping sides containing a liquid for supporting the monolayer on the surface thereof; a circular rotor suspended above the trough such that the lower surface of the rotor contacts the surface of the liquid, positioned such that the axis of the rotor is concentric with the axis of the trough and freely rotable about its axis; apparatus for hydrostatically compressing the monolayer in the annular region formed between the rotor and the sides of the trough; and apparatus for rotating the trough about its axis. Preferably, hydrostatic compression of the monolayer is achieved by removing liquid from the bottom of the trough (decreasing the surface area) while raising the trough vertically along its axis to maintain the monolayer at a constant elevation (and maintain rotor contact). In order to measure viscosity, a apparatus for rotating the rotor about its axis is added to the apparatus.
- Inventors:
-
- Oak Park, IL
- Sendai, JP
- Evanston, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 865561
- Patent Number(s):
- 4537064
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; apparatus; measuring; shear; modulus; viscosity; monomolecular; film; instrument; comprises; circular; trough; inwardly; sloping; containing; liquid; supporting; monolayer; surface; rotor; suspended; contacts; positioned; axis; concentric; freely; rotable; hydrostatically; compressing; annular; region; formed; rotating; preferably; hydrostatic; compression; achieved; removing; bottom; decreasing; raising; vertically; maintain; constant; elevation; contact; measure; added; annular region; film comprises; shear modulus; removing liquid; region formed; monomolecular film; moving liquid; /73/
Citation Formats
Abraham, Bernard M, Miyano, Kenjiro, and Ketterson, John B. Method and apparatus for measuring shear modulus and viscosity of a monomolecular film. United States: N. p., 1985.
Web.
Abraham, Bernard M, Miyano, Kenjiro, & Ketterson, John B. Method and apparatus for measuring shear modulus and viscosity of a monomolecular film. United States.
Abraham, Bernard M, Miyano, Kenjiro, and Ketterson, John B. Tue .
"Method and apparatus for measuring shear modulus and viscosity of a monomolecular film". United States. https://www.osti.gov/servlets/purl/865561.
@article{osti_865561,
title = {Method and apparatus for measuring shear modulus and viscosity of a monomolecular film},
author = {Abraham, Bernard M and Miyano, Kenjiro and Ketterson, John B},
abstractNote = {Instrument for measuring the shear modulus of a monomolecular film comprises a circular trough having inwardly sloping sides containing a liquid for supporting the monolayer on the surface thereof; a circular rotor suspended above the trough such that the lower surface of the rotor contacts the surface of the liquid, positioned such that the axis of the rotor is concentric with the axis of the trough and freely rotable about its axis; apparatus for hydrostatically compressing the monolayer in the annular region formed between the rotor and the sides of the trough; and apparatus for rotating the trough about its axis. Preferably, hydrostatic compression of the monolayer is achieved by removing liquid from the bottom of the trough (decreasing the surface area) while raising the trough vertically along its axis to maintain the monolayer at a constant elevation (and maintain rotor contact). In order to measure viscosity, a apparatus for rotating the rotor about its axis is added to the apparatus.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}