Abstract

Raman scattering on deformed droplets levitated in an acoustic levitator and produced by a vibrating-orifice aerosol generator were investigated. Our samples experiments were diethyl hexyl sebecate (DEHS) droplets in the millimeter-size range and ethanol droplets in the size range 50100 µm. The C—H stretching region from 2800 to 3100 cm-1 was investigated. We found that the Raman intensity measured by a scattering angle of 90° depended on the shape of the droplets. Raman scattering on spherical droplets was smaller than scattering on spheroidal droplets with the same volume. Similar results were observed for the fluorescence signal of Rhodamine 6G-doped DEHS droplets.

© 2003 Optical Society of America

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H. Moritz, S. Lange, and G. Schweiger, J. Aerosol Sci. 28, 199 (1997).
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1993

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1991

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A. K. Ray, R. D. Johnson, and A. Souyri, Langmuir 5, 133 (1989).
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1987

T. L. Ward, S. H. Zhang, T. Allen, and E. J. Davis, J. Colloid Interface Sci. 118, 343 (1987).
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1983

1980

1979

1976

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R. N. Berglund and B. Y. H. Liu, Environ. Sci. Technol. 7, 147 (1973).
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Alexander, D. R.

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[CrossRef]

Ashkin, A.

Barber, P. W.

Barton, J. P.

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Campillo, A. J.

H.-B. Lin, J. D. Eversole, and A. J. Campillo, Rev. Sci. Instrum. 61, 1018 (1990).
[CrossRef]

Chang, R. K.

Chang, S.

Chemla, Y. R.

Chen, G.

Chew, H.

Chylek, P.

Cooke, D. D.

Davis, E. J.

C. L. Aardahl and E. J. Davis, Appl. Spectrosc. 50, 71 (1996).
[CrossRef]

T. L. Ward, S. H. Zhang, T. Allen, and E. J. Davis, J. Colloid Interface Sci. 118, 343 (1987).
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Devarakonda, V.

V. Devarakonda, A. K. Ray, T. Kaiser, and G. Schweiger, Aerosol Sci. Technol. 28, 531 (1998).
[CrossRef]

Druger, S. D.

Dziedzic, J. M.

Esen, C.

Eversole, J. D.

H.-B. Lin, J. D. Eversole, and A. J. Campillo, Rev. Sci. Instrum. 61, 1018 (1990).
[CrossRef]

Fung, R. K.

Heinrich, P.

Hill, S. C.

Johnson, R. D.

A. K. Ray, R. D. Johnson, and A. Souyri, Langmuir 5, 133 (1989).
[CrossRef]

Kaiser, T.

Kerker, M.

Lange, S.

H. Moritz, S. Lange, and G. Schweiger, J. Aerosol Sci. 28, 199 (1997).
[CrossRef]

Lin, H.-B.

H.-B. Lin, J. D. Eversole, and A. J. Campillo, Rev. Sci. Instrum. 61, 1018 (1990).
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Liu, B. Y. H.

R. N. Berglund and B. Y. H. Liu, Environ. Sci. Technol. 7, 147 (1973).
[CrossRef]

Mazumder, M. M.

McNulty, P. J.

Moritz, H.

Niekamp, D.

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Ramaswamy, V.

Ray, A. K.

V. Devarakonda, A. K. Ray, T. Kaiser, and G. Schweiger, Aerosol Sci. Technol. 28, 531 (1998).
[CrossRef]

A. K. Ray, R. D. Johnson, and A. Souyri, Langmuir 5, 133 (1989).
[CrossRef]

Roll, G.

Schweiger, G.

Sculley, M.

Serpengüzel, A.

Souyri, A.

A. K. Ray, R. D. Johnson, and A. Souyri, Langmuir 5, 133 (1989).
[CrossRef]

Stone, D.

Tang, I. N.

Vehring, R.

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T. L. Ward, S. H. Zhang, T. Allen, and E. J. Davis, J. Colloid Interface Sci. 118, 343 (1987).
[CrossRef]

Zhang, J.

Zhang, S. H.

T. L. Ward, S. H. Zhang, T. Allen, and E. J. Davis, J. Colloid Interface Sci. 118, 343 (1987).
[CrossRef]

Aerosol Sci. Technol.

V. Devarakonda, A. K. Ray, T. Kaiser, and G. Schweiger, Aerosol Sci. Technol. 28, 531 (1998).
[CrossRef]

Appl. Opt.

Appl. Spectrosc.

Environ. Sci. Technol.

R. N. Berglund and B. Y. H. Liu, Environ. Sci. Technol. 7, 147 (1973).
[CrossRef]

J. Aerosol Sci.

H. Moritz, S. Lange, and G. Schweiger, J. Aerosol Sci. 28, 199 (1997).
[CrossRef]

G. Schweiger, J. Aerosol Sci. 21, 483 (1990).
[CrossRef]

J. Colloid Interface Sci.

T. L. Ward, S. H. Zhang, T. Allen, and E. J. Davis, J. Colloid Interface Sci. 118, 343 (1987).
[CrossRef]

J. Opt. Soc. Am.

J. Opt. Soc. Am. A

J. Opt. Soc. Am. B

Langmuir

A. K. Ray, R. D. Johnson, and A. Souyri, Langmuir 5, 133 (1989).
[CrossRef]

Opt. Lett.

Phys. Rev. A

H. Chew, P. J. McNulty, and M. Kerker, Phys. Rev. A 13, 396 (1976).
[CrossRef]

Rev. Sci. Instrum.

H.-B. Lin, J. D. Eversole, and A. J. Campillo, Rev. Sci. Instrum. 61, 1018 (1990).
[CrossRef]

Other

M. J. Pelletier, Analytical Applications of Raman Spectroscopy (Blackwell, Oxford, 1999), pp. 145–155.

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Figures (3)

Fig. 1
Fig. 1

(a) Experimental setup, (b) acoustically levitated droplet.

Fig. 2
Fig. 2

Intensity of the Raman signal for various deformations of the droplet, described as ratio of the semiaxes r1 to r2 (laser power, 3 W; exposure time, 30 s).

Fig. 3
Fig. 3

Raman scattering on droplet chains: (a) investigated types of droplets (1, prolate; 2, sphere; 3, oblate), (b) Raman intensity of the droplets (laser power 1 W, exposure time 3 s).

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