The Raman scattering intensity from a polyphenylether fluid film entrapped between a diamond window and a one-inch-diameter steel ball is found to correlate linearly with fluid film thickness over a 0.1 to 10 μm thickness range. The calibration and precision of the technique, as well as comparisons with other methods, are discussed.
HeinrichG. and GustenH., Thin Solid Films155, 295 (1987).
2.
ParekhN.NieuwenhuizenC. and BorstrokJ, and ElgersmaO., J. Electrochem. Soc.138, 1460 (1991).
3.
JullienA. and MeurisseM.-H, and BerthierY., Lubr. Eng.49, 479 (1993).
4.
HoultD. P. and WongV. W, and AzzolaJ. H., Direct Observation of the Friction Reduction of Multigrade Lubricants, SAE Tech. Paper Series No. 91072 (SAE, Warrendale, Pennsylvania, 1991).
5.
LuxJ. P. and HoultD. P, and OlechowskiM. J., Lubr. Eng.47, 353 (1991).
6.
DriscollD. I. and SchmittR. L, and StevensonW. H., J. Fluids Eng. Trans. ASME, 114, 107 (1992).
7.
RichardsonD. E. and BormanG. L., Using Fiber Optics and Laser Fluorescence for Measuring Thin Oil Films with Application to Engines, SAE Tech. Paper Series No. 912388 (SAE, Warrendale, Pennsylvania, 1991).
8.
DaoN. Q. and JouanM., Sens. and Actuators, B: ChemicalB11, 147 (1993).
9.
MeeraB. N. and RamakrishnaJ., J. Non-Crystal. Solids159, 1 (1993).
10.
HuX.StanfordJ. L. and DayR. J, and YoungR. J., Macromolecules25, 672 (1992).
11.
SchweigerG., Chem. Ing. Tech.64, 41 (1992).
12.
LinH. C.LeeM. C. and LinS. S, and HuangY. S., Solid State Commun.82, 821 (1992).
13.
OhyamaT. and MoriY. H., Rev. Sci. Instrum.58, 1860 (1987).
14.
EnglandW. A. and JennyS. N, and GreenhalghD. A., J. Raman Spectrosc.15, 156 (1984).
15.
McCartyK., Appl. Opt.26, 4482 (1987).
16.
ConnellG. A. N. and NemanichR. J, and TsaiC. C., Appl. Phys. Lett.36, 31 (1980).
17.
Ben-AmotzD.LaPlantF. and JiangY, and BeirmannT., in Proceedings of the Polyurethanes 1994 Conference (Technomic Publishing Company, Lancaster, Pennsylvania, 1994), p. 375, work in press.