Abstract

We describe a simple technique for producing arrays of silver ellipsoidal particles with parallel principal axes. The optical absorbance of the silver ellipsoids produced by this technique was measured as a function of angle, polarization, and wavelength of the incident light. Calculations of the optical absorbance were made using nonretarded electrodynamics and the bulk optical constants for silver. The results of these calculations are shown to compare favorably with the experimentally observed absorbance.

© 1987 Optical Society of America

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  1. J. C. Oro, J. C. Wolfe, “Fabrication of a high-density storage medium for electron beam memory,” J. Vac. Sci. Technol. B 1, 1088 (1983).
    [CrossRef]
  2. D. C. Flanders, “Replication of 175-Å lines and spaces in polymethylmethacrylate using x-ray lithography,” Appl. Phys. Lett. 36, 93 (1980).
    [CrossRef]
  3. H. W. Lehmann, R. Widner, “Fabrication of deep square wave structures with micron dimensions by reactive sputter etching,” Appl. Phys. Lett. 32, 163 (1978).
    [CrossRef]
  4. M. Fleischman, P. J. Hendra, A. J. McQuillian, “Raman spectra of pyridine adsorbed at a silver electrode,” Chem. Phys. Lett. 26, 123 (1974).
    [CrossRef]
  5. D. L. Jeanmaire, R. P. Van Duyne, “Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode,” J. Electroanal. Chem. 84, 1 (1977).
    [CrossRef]
  6. M. G. Albrecht, J. A. Creighton, “Anomalously intense Raman spectra of pyridine at a silver electrode,” J. Am. Chem. Soc. 99, 5215 (1977).
    [CrossRef]
  7. D. A. Weitz, S. Garoff, C. D. Hanson, T. J. Gramila, J. I. Gersten, “Fluorescent lifetimes of molecules on silver island films,” Opt. Lett. 7, 89 (1982).
    [CrossRef] [PubMed]
  8. P. F. Liao, “Silver structures produced by microlithography,” in Surface Enhanced Raman Scattering, R. K. Chang, T. E. Furtak, eds. (Plenum, New York, 1982).
    [CrossRef]
  9. J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
    [CrossRef]
  10. D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).
  11. S. W. Kennerly, J. W. Little, R. J. Warmack, T. L. Ferrell, “Optical properties of heated Ag films,” Phys. Rev. B 25, 2930 (1982).
  12. D. S. Wang, M. Kerker, “Enhanced Raman scattering by molecules adsorbed at the surface of colloidal spheroids,” Phys. Rev. B 24, 1777 (1981).
    [CrossRef]
  13. T. L. Ferrell, “SERS in Ag–pyridine sols,” Phys. Rev. B 25, 2930 (1982).
    [CrossRef]
  14. R. H. Ritchie, J. C. Ashley, T. L. Ferrell, in Electromagnetic Surface Modes, A. D. Boardman, ed. (Wiley, New York, 1982), Chap. 3.
  15. J. A. Stratton, Electromagnetic Theory (McGraw-Hill, New York, 1941), pp. 207–213.
  16. M. C. Buncick, Ph.D. dissertation (University of Tennessee, Knoxville, Tennessee, 1987).
  17. J. D. Jackson, Classical Electrodynamics, 2nd ed. (Wiley, New York, 1975), p. 412.
  18. Esco Products Inc., 171 Oak Ridge Road, Oak Ridge, New Jersey 07438.
  19. Duke Scientific Corporation, 2415 Embarcadero Way, Palo Alto, California 94303.
  20. H. W. Deckman, J. H. Bunsmuir, “Natural lithography,” Appl. Phys. Lett. 41, 377 (1982).
    [CrossRef]
  21. R. D. Mathis Company, 2840 Gundry Avenue, Long Beach, California 90806.
  22. Shimadzu UV-250, Shimadzu Scientific Instruments, Inc., 7102 Riverside Drive, Columbia, Maryland 21046.
  23. B. K. Russell, T. L. Ferrell, V. E. Anderson, R. J. Warmack, J. G. Montovani, “Experimental test of the Mie theory for microlithographically produced silver spheres,” Phys. Rev. B 35, 2151 (1987); P. W. Barber, R. K. Chang, H. Massoudi, “Electrodynamic calculations of the surface-enhanced electric intensities on large Ag spheroids,” Phys. Rev. B 27, 7251 (1983).
    [CrossRef]
  24. R. J. Warmack, S. L. Humphrey, “Observation of two surface plasmon modes on gold particles,” Phys. Rev. B 34, 2246 (1986).
    [CrossRef]

1987

B. K. Russell, T. L. Ferrell, V. E. Anderson, R. J. Warmack, J. G. Montovani, “Experimental test of the Mie theory for microlithographically produced silver spheres,” Phys. Rev. B 35, 2151 (1987); P. W. Barber, R. K. Chang, H. Massoudi, “Electrodynamic calculations of the surface-enhanced electric intensities on large Ag spheroids,” Phys. Rev. B 27, 7251 (1983).
[CrossRef]

1986

R. J. Warmack, S. L. Humphrey, “Observation of two surface plasmon modes on gold particles,” Phys. Rev. B 34, 2246 (1986).
[CrossRef]

J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
[CrossRef]

1984

D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).

1983

J. C. Oro, J. C. Wolfe, “Fabrication of a high-density storage medium for electron beam memory,” J. Vac. Sci. Technol. B 1, 1088 (1983).
[CrossRef]

1982

S. W. Kennerly, J. W. Little, R. J. Warmack, T. L. Ferrell, “Optical properties of heated Ag films,” Phys. Rev. B 25, 2930 (1982).

D. A. Weitz, S. Garoff, C. D. Hanson, T. J. Gramila, J. I. Gersten, “Fluorescent lifetimes of molecules on silver island films,” Opt. Lett. 7, 89 (1982).
[CrossRef] [PubMed]

T. L. Ferrell, “SERS in Ag–pyridine sols,” Phys. Rev. B 25, 2930 (1982).
[CrossRef]

H. W. Deckman, J. H. Bunsmuir, “Natural lithography,” Appl. Phys. Lett. 41, 377 (1982).
[CrossRef]

1981

D. S. Wang, M. Kerker, “Enhanced Raman scattering by molecules adsorbed at the surface of colloidal spheroids,” Phys. Rev. B 24, 1777 (1981).
[CrossRef]

1980

D. C. Flanders, “Replication of 175-Å lines and spaces in polymethylmethacrylate using x-ray lithography,” Appl. Phys. Lett. 36, 93 (1980).
[CrossRef]

1978

H. W. Lehmann, R. Widner, “Fabrication of deep square wave structures with micron dimensions by reactive sputter etching,” Appl. Phys. Lett. 32, 163 (1978).
[CrossRef]

1977

D. L. Jeanmaire, R. P. Van Duyne, “Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode,” J. Electroanal. Chem. 84, 1 (1977).
[CrossRef]

M. G. Albrecht, J. A. Creighton, “Anomalously intense Raman spectra of pyridine at a silver electrode,” J. Am. Chem. Soc. 99, 5215 (1977).
[CrossRef]

1974

M. Fleischman, P. J. Hendra, A. J. McQuillian, “Raman spectra of pyridine adsorbed at a silver electrode,” Chem. Phys. Lett. 26, 123 (1974).
[CrossRef]

Albrecht, M. G.

M. G. Albrecht, J. A. Creighton, “Anomalously intense Raman spectra of pyridine at a silver electrode,” J. Am. Chem. Soc. 99, 5215 (1977).
[CrossRef]

Anderson, V. E.

B. K. Russell, T. L. Ferrell, V. E. Anderson, R. J. Warmack, J. G. Montovani, “Experimental test of the Mie theory for microlithographically produced silver spheres,” Phys. Rev. B 35, 2151 (1987); P. W. Barber, R. K. Chang, H. Massoudi, “Electrodynamic calculations of the surface-enhanced electric intensities on large Ag spheroids,” Phys. Rev. B 27, 7251 (1983).
[CrossRef]

Arakawa, E. T.

J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
[CrossRef]

D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).

Ashley, J. C.

R. H. Ritchie, J. C. Ashley, T. L. Ferrell, in Electromagnetic Surface Modes, A. D. Boardman, ed. (Wiley, New York, 1982), Chap. 3.

Bailey, D. L.

D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).

Buncick, M. C.

J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
[CrossRef]

D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).

M. C. Buncick, Ph.D. dissertation (University of Tennessee, Knoxville, Tennessee, 1987).

Bunsmuir, J. H.

H. W. Deckman, J. H. Bunsmuir, “Natural lithography,” Appl. Phys. Lett. 41, 377 (1982).
[CrossRef]

Callcott, T. A.

D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).

Creighton, J. A.

M. G. Albrecht, J. A. Creighton, “Anomalously intense Raman spectra of pyridine at a silver electrode,” J. Am. Chem. Soc. 99, 5215 (1977).
[CrossRef]

Deckman, H. W.

H. W. Deckman, J. H. Bunsmuir, “Natural lithography,” Appl. Phys. Lett. 41, 377 (1982).
[CrossRef]

Ferrell, T. L.

B. K. Russell, T. L. Ferrell, V. E. Anderson, R. J. Warmack, J. G. Montovani, “Experimental test of the Mie theory for microlithographically produced silver spheres,” Phys. Rev. B 35, 2151 (1987); P. W. Barber, R. K. Chang, H. Massoudi, “Electrodynamic calculations of the surface-enhanced electric intensities on large Ag spheroids,” Phys. Rev. B 27, 7251 (1983).
[CrossRef]

J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
[CrossRef]

D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).

S. W. Kennerly, J. W. Little, R. J. Warmack, T. L. Ferrell, “Optical properties of heated Ag films,” Phys. Rev. B 25, 2930 (1982).

T. L. Ferrell, “SERS in Ag–pyridine sols,” Phys. Rev. B 25, 2930 (1982).
[CrossRef]

R. H. Ritchie, J. C. Ashley, T. L. Ferrell, in Electromagnetic Surface Modes, A. D. Boardman, ed. (Wiley, New York, 1982), Chap. 3.

Flanders, D. C.

D. C. Flanders, “Replication of 175-Å lines and spaces in polymethylmethacrylate using x-ray lithography,” Appl. Phys. Lett. 36, 93 (1980).
[CrossRef]

Fleischman, M.

M. Fleischman, P. J. Hendra, A. J. McQuillian, “Raman spectra of pyridine adsorbed at a silver electrode,” Chem. Phys. Lett. 26, 123 (1974).
[CrossRef]

Garoff, S.

Gersten, J. I.

Goudonnet, J. P.

J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
[CrossRef]

Gramila, T. J.

Hanson, C. D.

Hendra, P. J.

M. Fleischman, P. J. Hendra, A. J. McQuillian, “Raman spectra of pyridine adsorbed at a silver electrode,” Chem. Phys. Lett. 26, 123 (1974).
[CrossRef]

Humphrey, S. L.

R. J. Warmack, S. L. Humphrey, “Observation of two surface plasmon modes on gold particles,” Phys. Rev. B 34, 2246 (1986).
[CrossRef]

Inagaki, T.

J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
[CrossRef]

Jackson, J. D.

J. D. Jackson, Classical Electrodynamics, 2nd ed. (Wiley, New York, 1975), p. 412.

Jeanmaire, D. L.

D. L. Jeanmaire, R. P. Van Duyne, “Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode,” J. Electroanal. Chem. 84, 1 (1977).
[CrossRef]

Kennerly, S. W.

S. W. Kennerly, J. W. Little, R. J. Warmack, T. L. Ferrell, “Optical properties of heated Ag films,” Phys. Rev. B 25, 2930 (1982).

Kerker, M.

D. S. Wang, M. Kerker, “Enhanced Raman scattering by molecules adsorbed at the surface of colloidal spheroids,” Phys. Rev. B 24, 1777 (1981).
[CrossRef]

Lehmann, H. W.

H. W. Lehmann, R. Widner, “Fabrication of deep square wave structures with micron dimensions by reactive sputter etching,” Appl. Phys. Lett. 32, 163 (1978).
[CrossRef]

Liao, P. F.

P. F. Liao, “Silver structures produced by microlithography,” in Surface Enhanced Raman Scattering, R. K. Chang, T. E. Furtak, eds. (Plenum, New York, 1982).
[CrossRef]

Little, J. W.

S. W. Kennerly, J. W. Little, R. J. Warmack, T. L. Ferrell, “Optical properties of heated Ag films,” Phys. Rev. B 25, 2930 (1982).

McQuillian, A. J.

M. Fleischman, P. J. Hendra, A. J. McQuillian, “Raman spectra of pyridine adsorbed at a silver electrode,” Chem. Phys. Lett. 26, 123 (1974).
[CrossRef]

Montovani, J. G.

B. K. Russell, T. L. Ferrell, V. E. Anderson, R. J. Warmack, J. G. Montovani, “Experimental test of the Mie theory for microlithographically produced silver spheres,” Phys. Rev. B 35, 2151 (1987); P. W. Barber, R. K. Chang, H. Massoudi, “Electrodynamic calculations of the surface-enhanced electric intensities on large Ag spheroids,” Phys. Rev. B 27, 7251 (1983).
[CrossRef]

Oro, J. C.

J. C. Oro, J. C. Wolfe, “Fabrication of a high-density storage medium for electron beam memory,” J. Vac. Sci. Technol. B 1, 1088 (1983).
[CrossRef]

Ritchie, R. H.

R. H. Ritchie, J. C. Ashley, T. L. Ferrell, in Electromagnetic Surface Modes, A. D. Boardman, ed. (Wiley, New York, 1982), Chap. 3.

Russell, B. K.

B. K. Russell, T. L. Ferrell, V. E. Anderson, R. J. Warmack, J. G. Montovani, “Experimental test of the Mie theory for microlithographically produced silver spheres,” Phys. Rev. B 35, 2151 (1987); P. W. Barber, R. K. Chang, H. Massoudi, “Electrodynamic calculations of the surface-enhanced electric intensities on large Ag spheroids,” Phys. Rev. B 27, 7251 (1983).
[CrossRef]

Stratton, J. A.

J. A. Stratton, Electromagnetic Theory (McGraw-Hill, New York, 1941), pp. 207–213.

Van Duyne, R. P.

D. L. Jeanmaire, R. P. Van Duyne, “Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode,” J. Electroanal. Chem. 84, 1 (1977).
[CrossRef]

Wang, D. S.

D. S. Wang, M. Kerker, “Enhanced Raman scattering by molecules adsorbed at the surface of colloidal spheroids,” Phys. Rev. B 24, 1777 (1981).
[CrossRef]

Warmack, R. J.

B. K. Russell, T. L. Ferrell, V. E. Anderson, R. J. Warmack, J. G. Montovani, “Experimental test of the Mie theory for microlithographically produced silver spheres,” Phys. Rev. B 35, 2151 (1987); P. W. Barber, R. K. Chang, H. Massoudi, “Electrodynamic calculations of the surface-enhanced electric intensities on large Ag spheroids,” Phys. Rev. B 27, 7251 (1983).
[CrossRef]

R. J. Warmack, S. L. Humphrey, “Observation of two surface plasmon modes on gold particles,” Phys. Rev. B 34, 2246 (1986).
[CrossRef]

J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
[CrossRef]

D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).

S. W. Kennerly, J. W. Little, R. J. Warmack, T. L. Ferrell, “Optical properties of heated Ag films,” Phys. Rev. B 25, 2930 (1982).

Weitz, D. A.

Widner, R.

H. W. Lehmann, R. Widner, “Fabrication of deep square wave structures with micron dimensions by reactive sputter etching,” Appl. Phys. Lett. 32, 163 (1978).
[CrossRef]

Wolfe, J. C.

J. C. Oro, J. C. Wolfe, “Fabrication of a high-density storage medium for electron beam memory,” J. Vac. Sci. Technol. B 1, 1088 (1983).
[CrossRef]

Appl. Phys. Lett.

D. C. Flanders, “Replication of 175-Å lines and spaces in polymethylmethacrylate using x-ray lithography,” Appl. Phys. Lett. 36, 93 (1980).
[CrossRef]

H. W. Lehmann, R. Widner, “Fabrication of deep square wave structures with micron dimensions by reactive sputter etching,” Appl. Phys. Lett. 32, 163 (1978).
[CrossRef]

H. W. Deckman, J. H. Bunsmuir, “Natural lithography,” Appl. Phys. Lett. 41, 377 (1982).
[CrossRef]

Bull. Am. Phys. Soc.

D. L. Bailey, T. A. Callcott, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “SERS of silver coated surfaces,” Bull. Am. Phys. Soc. 29, 1501 (1984); M. C. Buncick, R. J. Warmack, T. L. Ferrell, “Optical properties of heated silver films in dielectric media,” Bull. Am. Phys. Soc. 29, 1501 (1984).

Chem. Phys.

J. P. Goudonnet, T. Inagaki, T. L. Ferrell, R. J. Warmack, M. C. Buncick, E. T. Arakawa, “Enhanced Raman scattering from benzoic acid on silver and gold prolate spheroids on large transparent patterned areas,” Chem. Phys. 106, 225 (1986).
[CrossRef]

Chem. Phys. Lett.

M. Fleischman, P. J. Hendra, A. J. McQuillian, “Raman spectra of pyridine adsorbed at a silver electrode,” Chem. Phys. Lett. 26, 123 (1974).
[CrossRef]

J. Am. Chem. Soc.

M. G. Albrecht, J. A. Creighton, “Anomalously intense Raman spectra of pyridine at a silver electrode,” J. Am. Chem. Soc. 99, 5215 (1977).
[CrossRef]

J. Electroanal. Chem.

D. L. Jeanmaire, R. P. Van Duyne, “Heterocyclic, aromatic, and aliphatic amines adsorbed on the anodized silver electrode,” J. Electroanal. Chem. 84, 1 (1977).
[CrossRef]

J. Vac. Sci. Technol. B

J. C. Oro, J. C. Wolfe, “Fabrication of a high-density storage medium for electron beam memory,” J. Vac. Sci. Technol. B 1, 1088 (1983).
[CrossRef]

Opt. Lett.

Phys. Rev. B

S. W. Kennerly, J. W. Little, R. J. Warmack, T. L. Ferrell, “Optical properties of heated Ag films,” Phys. Rev. B 25, 2930 (1982).

D. S. Wang, M. Kerker, “Enhanced Raman scattering by molecules adsorbed at the surface of colloidal spheroids,” Phys. Rev. B 24, 1777 (1981).
[CrossRef]

T. L. Ferrell, “SERS in Ag–pyridine sols,” Phys. Rev. B 25, 2930 (1982).
[CrossRef]

B. K. Russell, T. L. Ferrell, V. E. Anderson, R. J. Warmack, J. G. Montovani, “Experimental test of the Mie theory for microlithographically produced silver spheres,” Phys. Rev. B 35, 2151 (1987); P. W. Barber, R. K. Chang, H. Massoudi, “Electrodynamic calculations of the surface-enhanced electric intensities on large Ag spheroids,” Phys. Rev. B 27, 7251 (1983).
[CrossRef]

R. J. Warmack, S. L. Humphrey, “Observation of two surface plasmon modes on gold particles,” Phys. Rev. B 34, 2246 (1986).
[CrossRef]

Other

R. D. Mathis Company, 2840 Gundry Avenue, Long Beach, California 90806.

Shimadzu UV-250, Shimadzu Scientific Instruments, Inc., 7102 Riverside Drive, Columbia, Maryland 21046.

R. H. Ritchie, J. C. Ashley, T. L. Ferrell, in Electromagnetic Surface Modes, A. D. Boardman, ed. (Wiley, New York, 1982), Chap. 3.

J. A. Stratton, Electromagnetic Theory (McGraw-Hill, New York, 1941), pp. 207–213.

M. C. Buncick, Ph.D. dissertation (University of Tennessee, Knoxville, Tennessee, 1987).

J. D. Jackson, Classical Electrodynamics, 2nd ed. (Wiley, New York, 1975), p. 412.

Esco Products Inc., 171 Oak Ridge Road, Oak Ridge, New Jersey 07438.

Duke Scientific Corporation, 2415 Embarcadero Way, Palo Alto, California 94303.

P. F. Liao, “Silver structures produced by microlithography,” in Surface Enhanced Raman Scattering, R. K. Chang, T. E. Furtak, eds. (Plenum, New York, 1982).
[CrossRef]

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Figures (6)

Fig. 1
Fig. 1

Dielectric response as a function of axis ratio c/a for values of the ratio b/a for resonant charge-density-oscillation modes in silver ellipsoids. Mode 1 is oscillations along the a axis shown in the dotted area, mode 2 is oscillations along the b axis shown in the unshaded area, and mode 3 is oscillations along the c axis shown in the hatched area.

Fig. 2
Fig. 2

A monolayer of 272-nm-diameter polystyrene spheres on a quartz substrate. The substrate was flooded with a 3.3% solids mixture of spheres and water and spun at 1000 rpm until dry. A grain boundary and dislocations are visible. The bar indicates a length of 296 nm.

Fig. 3
Fig. 3

A silver-particle array fabricated by depositing silver over a densely packed array of 272-nm-diameter spheres. The spheres were dissolved by ultrasounding in methylene chloride. The bar indicates a length of 299 nm.

Fig. 4
Fig. 4

SiO2 posts fabricated by reactive-ion etching in CHF3. The posts have short range order and lean at ~40° with respect to the substrate normal. Silver is deposited at near normal to the post axes (e.g., from the left here) to produce silver ellipsoids. This view is at 50° with respect to the substrate normal. The bar indicates a length of 299 nm.

Fig. 5
Fig. 5

Comparison of experimental and theoretical absorbance for s-polarized light. The solid curve is theoretical absorbance using two ellipsoids whose longest principal axes are perpendicular to each other. A Gaussian shape distribution has been included. The dotted curve is experimental data for 15 nm of silver deposited at 35° to the sample normal. Data for light at ϕ = 0°, θ = 0° (normal to the post axis) are shown in (a); data for light at ϕ = 0°, θ = 45° in (b); and data for light at if ϕ = 0°, θ = 90° (parallel to the post axis) in (c).

Fig. 6
Fig. 6

Comparison of experimental and theoretical absorbance for p-polarized light. The solid curve is theoretical absorbance using two ellipsoids whose longest principal axes are perpendicular to each other. A Gaussian shape distribution has been included. The dotted curve is experimental data for 15 nm of silver deposited at 35° to the sample normal. Data for light at ϕ = 0°, θ = 0° (normal to the post axis) are shown in (a); data for light at ϕ = 0°, θ = 45° in (b), and data for light at ϕ = 0, θ = 90° (parallel to the post axis) in (c).

Equations (11)

Equations on this page are rendered with MathJax. Learn more.

( ξ - ζ ) R η η ( R η Φ η ) + ( ζ - η ) R ξ ξ ( R ξ Φ ξ ) + ( η - ξ ) R ζ ζ ( R ζ Φ ζ ) = 0 ,
R s = [ ( s + a 2 ) ( s + b 2 ) ( s + c 2 ) ] 1 / 2 .
x 2 η + a 2 + y 2 η + b 2 + z 2 η + c 2 = 1.
1 ( ω ) = 1 - 2 a b c A i
A i = 0 d s ( s + a i 2 ) R s .
P ( ω ) = ( ω ) - 1 4 π E in ( ω )
α i ( ω ) = 2 a b c [ ( ω ) - 1 ] / 3 2 + a b c A i [ ( ω ) - 1 ] .
E sc = ω 2 e i k r c 2 r [ ( n ^ × p ) × n ^ ] ,
σ ts = 4 π ω c Im ( α x sin 2 ϕ + α y cos 2 ϕ )
σ tp = 4 π ω c Im [ ( α x cos 2 ϕ + α y sin 2 ϕ ) × cos 2 θ + α z sin 2 θ ] ,
A = log 10 ( 1 1 - N σ t ) .

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