United States Army Combat Capabilities Development Command

Topography-Driven Liquid Repellency in PFAS-Free Spherical-Particle Coating

Abstract The development of PFAS-free (per- and polyfluoroalkyl substances), liquid-repellent surfaces require a fundamental understanding of how surface geometry governs wetting-state stability. However, the independent role of interparticle spacing remains poorly understood bec...

An elastomer-embedded distributed optical fiber sensor based on optical frequency domain reflectometry

This study investigates a U-shaped low-bend-loss single-mode fiber embedded in an elastomer pad and interrogated by optical frequency domain reflectometry (OFDR) for distributed deformation sensing. The OFDR measurements used a 2.6 mm gage pitch over an approximately 1.27 m measu...

Sub-Doppler rubidium atom cooling using a programmable agile integrated PZT-on-SiN resonator

Abstract Programmability and precise control of laser frequency are essential for quantum experiments and applications such as atomic clocks, quantum computers, and cold-atom sensors. Current systems use bulky, power-hungry modulators and frequency shifters which are difficult to...