Method of monitoring a surface using surface spectroscopy

Details Method of monitoring a surface using surface spectroscopy Method of monitoring a surface using surface spectroscopy

1994-02-22

1997-04-22

Hantis, K.

Optics: measuring and testing

By dispersed light spectroscopy

356237, G01J 300, G01N 2100

Patent

active

056233418

ABSTRACT:
A method for monitoring a surface is provided. Nonlinear second order surface spectroscopy is used to monitor the condition of a surface. Conditions such as corrosion, contamination and deposition may be monitored. According to the present invention, electromagnetic radiation is directed towards the surface and the second harmonic or other second order frequency responses are monitored to detect the state of the surface. Preferably, a laser, input optics and output optics are utilized to create the second order frequency response that is detected.

REFERENCES:
patent: 5294289 (1994-03-01), Heinz et al.
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Studies of Surface Enhanced Optical Effects by Second-Harmonic Generation, Y. R. Shen, Reprinted from Proceedings of the International Conference on Lasers '84, Nov. 26-30, 1984, pp. 234-240.
Investigation of the Si(111) Surface in UHV: Oxidation and The Effect of Surface Phosphorus, H. W. K. Tom, X. D. Zhu, Y. R. Shen, and G. A. Somorjai, Reprint from Proceedings of the 17th International Conference on the Physics of Semiconductors, Edited by J. D. Chadi and W. A. Harrison, 1985 by Springer-Verlag New York, Inc.
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Second-harmonic Microscopy of Biological Tissue, Isaac Freund and Moshe Deutsch, 1986, Optical Society of America, pp. 94-96.
4. Applications of Optical Second-Harmonic Generation To Surface Science, Y. R. Shen, Dept. of Physics, University of California, and Materials and Molecular Research Division, Lawrence Berkeley Laboratory, 1986 VCT Publishers, Inc. pp. 151-196.
Probing the Structure of Freely Suspended Smectic-A Films By Optical Second-Harmonic Generation, H. Hsiung and Y. R. Shen, 1986, The Americal Physical Society, pp. 4303-4309.
A Novel Method For Measurements Of Second-Order Non-Linearities Of Organic Molecules, Th. Rasing, G. Berkovic, Y. R. Shen, vol. 130, No. 1,2, pp. 1-5, Chemical Physics Letters, Sep., 1986.
A Few Recent Experiments On Surface Studies By Second Harmonic Generation, Y. R. Shen, pp. 259-266, Plenum Publishing Corporation, 1986.
Probing Liquid Crystals With Nonlinear Optical Processes, Y. R. Shen, H. Hsiung, and P. Guyot-Sinnest, Proceedings: Conference on Optics of Liquid Crystals, Naples, Italy, Jul. 15-18, 1986.
Experiments on Optical Second-Harmonic Generation As A Surface Probe of Electrodes, G. L. Richmond, H. M. Rojhantalab, J. M. Robinson, and V. L. Shannon, pp. 228-236, J. Opt. Soc. Am. B/vol. 4, No. 2, Feb., 1987.
Molecular Monolayers and Films, J. D. Swalen, D. L. Allara, J. D. Andrade, E. A. Chandross, S. Garoff, J. Israelachvili, T. J. McCarthy, R. Murray, R. F. Pease, J. F. Rabolt, K. J. Wynne, and H. Yu, pp. 932-950, Reprinted from Langmuir, 1987.
Observation of C-H Stretch Vibrations Of Monolayers Of Molecules Optical Sum-Frequency Generation, J. H. Hunt, P. Guyot-Sionnest and Y. R. Shen, pp. 189-192, vol. 133, No. 3, Chemical Physics Letters, Jan., 1987.
Second-order Nonlinear Polarizability Of Various Biphenyl Derivatives, G. Berkovic, Th. Rasing, and Y. R. Shen, pp. 945-949, Reprinted from Journal of the Optical Society of America B, vol. 4, Jun., 1987.
Local And Nonlocal Surface Nonlinearities For Surface Optical Second Harmonic Generation, P. Guyot-Sionnest and Y. R. Shen, pp. 1-22, Department of Physics, University of California, May, 1987.
Optical Second Harmonic Generation as a Probe for Surface Magnetization, Ru-Pin Pan, Y. R. Shen, pp. 175-178, Chinese Journal of Physics, vol. 25, No. 1, Spring 1987.
The Effect of Conjugation Length and Electron Donor Groups on the Second Order Nonlinear Polarizability of Cyano Substituted Aromatic Molecules, G. Berkovic and Y. R. Shen, pp. 607-616, Mol. Cryst. Liq. Cryst., 1987, vol. 150B.
Polar Ordering of Quasiliquid Crystals--An Optical Second Harmonic Generation Study, H. Hsiung, Th. Rasing, and Y. R. Shen, pp. 3127-3130, J. Chem. Phys, 87 (5), Sep., 1987.
Vibration Spectroscopy of a Silane Mololayer at Air/Solid and Liquid/Solid Interfaces Using Sum-Frequency Generation, P. Guyot-Sionnest, R. Superfine, J. H. Hunt, and Y. R. Shen, pp. 1-18, Center for Advanced Material (LBL-24365 Preprint), Nov., 1987.
Surface Vibrational Spectroscopy of Molecular Adsorbates on Metals and Semiconductors by Infrared-Visible Sum-Frequency Generation, R. Superfine, P. Guyot-Sionnest, J. H. Hunt, C. T. Kao, and Y. R. Shen, pp. 1-14, Center for Advanced Materials (LBL-24434 Preprint), Dec., 1987.
Second Harmonic Generation For In Situ Analysis of Electrode Surface Structure, Victoria L. Shannon, Daniel A. Koos, and Geraldine L. Richmond, pp. 3579-3583, Applied Optics, vol. 26, No. 17, Sep., 1987.
Surface Diffusion of CO on Ni(111) Studied by Diffraction of Optical Second-Harmonic Generation off a Monolayer Grating, X. D. Zhu, Th. Rasing, and Y. R. Shen, pp. 2883-2885, vol. 61, No. 25, Physical Review Letters, Dec., 1988.
Surface Diffusion Of Carbon Monoxide on Ru(001) Studied Using Laser-Induced Thermal Desorption, A. A. Deckert, J. L. Brand, M. V. Arena and S. M. George, pp. 441-462, Surface Science 208, 1989, North-Holland, Amsterdam.
Interaction of Carbon Monoxide With Fe(001), N. B. Brookes, A. Clarke, and P. D. Johnson, pp. 2764-2767, vol. 63, No. 25, Physical Review Letters, Dec., 1989.
Nonadiabatic Absorbate Vibrational Damping and Surface Electronic Structure: H on W(001), Kevin E. Smith and Stephen D. Kevan, pp. 567-570, vol. 64, No. 5, Physical Review Letters, Jan., 1990.
Ideal Hydrogen Termination of the Si(111) Surface, G. S. Higashi, Y. J. Chabal, G. W. Trucks, and Krishnan Raghavachari, pp. 656-658, Appl. Phys Lett. 56(7), Feb., 1990.
Lifetime of an Adsorbate-Substrate Vibration: H on Si(111), P. Guyot-Sionnest, pp. 2156-2159, vol. 64, No. 18, Physical Review Letters, Apr., 1990.
Coupling of an Adsorbate Vibration to a Substrate Surface Phonon: H on Si(111), Y. J. Chabal and G. S. Higashi, pp. 1124-1127, vol. 65, No. 9, Physical Review Letters, Aug., 1990.
Sensors to Detect the Onset of Localized Corrosion Phenomena, pp. 1-43, RI/RD92-102P, Proposal for Research Area 2.6, Item 6, Jan., 1992.
Novel Nondestructive Evaluation (NDE) for Corrosion Detection, RI/RD92-191P-1, pp. 1-1-6-3, Appendix-1, Technical Proposal, Jan., 1993.
Research Proposal for Method to Monitor Tribological Surface Chemical Processes, RI/RD92-110WP, pp. 1-13, Feb., 1992.

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