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Proceedings Paper

Microwave mediated synthesis of ZnS spherical nanoparticles for IR optical ceramics
Author(s): D. Ravichandran; T. Wharton; B. Devan; R. Korenstein; R. Tustison; S. Komarneni
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Paper Abstract

The existing material choice for long-wave infrared (LWIR) and semi-active laser domes is multispectral zinc sulfide (ZnS), made by chemical vapor deposition. An alternative route to make more erosion-resistant ZnS could be through hot pressing ZnS nanoparticles into small-grain material. We have attempted to produce ZnS nanoparticles both by microwave and microwave-hydrothermal methods. Microwave route produced ultrahigh purity, homogeneous, well dispersed, and uniformly spherical ZnS nanoparticles. Microwave-hydrothermal route produced equiaxed cubic-faceted nanoparticles. The powder X-ray diffraction patterns of ZnS shows the presence of broad reflections corresponding to the (1 1 1), (2 2 0), and (3 1 1) planes of the cubic crystalline ZnS material. The domain size of the particles estimated from the Debye-Scherrer formula for the main reflection (111) gives a value of 2.9 and 2.5 for the microwave and microwave-hydrothermal methods respectively.

Paper Details

Date Published: 20 May 2011
PDF: 6 pages
Proc. SPIE 8016, Window and Dome Technologies and Materials XII, 80160K (20 May 2011); doi: 10.1117/12.883557
Show Author Affiliations
D. Ravichandran, Texas Biochemicals, Inc. (United States)
T. Wharton, Texas Biochemicals, Inc. (United States)
B. Devan, Texas Biochemicals, Inc. (United States)
R. Korenstein, Raytheon Co. (United States)
R. Tustison, Raytheon Co. (United States)
S. Komarneni, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 8016:
Window and Dome Technologies and Materials XII
Randal W. Tustison, Editor(s)

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