Abstract

Computed and observed extinction spectra of colloidal silver particles with various size and shape distributions are compared. Excellent agreement is achieved through consideration of (i) the effects of surface and internal contamination and particle size on the optical constants of silver, (ii) the appropriate number of terms as a function of size in the Mie equation for spheres, (iii) a formulation of the Gans equation for prolate spheroids, to include the degree of particle orientation that occurs when a swollen gelatin matrix dries, (iv) the method of combining spectral characteristics determined by the Mie (size) and Gans (shape) relations, and (v) stereometric corrections of the particle measurements for the effects of microtome-section thickness and swelling.

© 1973 Optical Society of America

Full Article  |  PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription