Superhydrophobic, infrared transmissive moth eye-like substrates for use in wet conditions

Darryl A. Boyd; Jesse A. Frantz; Lynda E. Busse; Woohong Kim; Shyam S. Bayya; Ishwar D. Aggarwal; Jasbinder S. Sanghera

doi:10.1117/12.2263078

3 May 2017 Superhydrophobic, infrared transmissive moth eye-like substrates for use in wet conditions

Darryl A. Boyd, Jesse A. Frantz, Lynda E. Busse, Woohong Kim, Shyam S. Bayya, Ishwar D. Aggarwal, Jasbinder S. Sanghera

Proceedings Volume 10179, Window and Dome Technologies and Materials XV; 1017906 (2017) https://doi.org/10.1117/12.2263078
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States

Abstract

Infrared (IR) transmissive moth eye-like substrates, including randomly patterned fused silica and various periodically patterned germanium substrates, were surface modified using a simple process. Goniometric analysis showed that the surface modification altered the surface wettability of each substrate, rendering them superhydrophobic. Following the surface modification, it was determined that the desirable IR transmission and antireflective properties of each substrate type were maintained. Furthermore, the hydrophobicity, IR transmission and antireflective capabilities of the substrates were shown to be significantly enhanced in comparison to native, non-patterned fused silica and germanium substrates that underwent the same processes. The results of this work provide an opportunity for the development of enhanced utility for infrared transmissive optics in wet or humid conditions.

Citation Download Citation

Darryl A. Boyd, Jesse A. Frantz, Lynda E. Busse, Woohong Kim, Shyam S. Bayya, Ishwar D. Aggarwal, and Jasbinder S. Sanghera "Superhydrophobic, infrared transmissive moth eye-like substrates for use in wet conditions", Proc. SPIE 10179, Window and Dome Technologies and Materials XV, 1017906 (3 May 2017); https://doi.org/10.1117/12.2263078

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