Author

Xiao-Jiang Chen

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Book Open access Oct 2026

OrbWeaver: A Geometric Optics-Based RIS for Omnidirectional 3D Beam Steering

Reconfigurable Intelligent Surfaces (RIS) are a key 6G technology for controlling the wireless environment and eliminating signal blockages. However, dominant planar meta-surfaces suffer from high cost, complex control, limited 3D coverage, and high beam alignment overhead. This paper presents OrbWeaver, an RIS that re...

Xuan Wang, Li-Yao Li, Run-Chuan Liu et al. · 0 citations

Open access Sep 2026

Hygieia: A Wearable Metamaterial Patch for Calibration-free Carotid Hemodynamics Monitoring

Long-term, continuous cardiac monitoring is essential for early detection and risk prediction of cardiovascular diseases. Recently, electromagnetic-based monitoring methods have gained attention because they are not affected by skin tone or contact force compared to optical or pressure-based methods. While existing sys...

Cheng-Han Jiang, Shi-Bo Zhang, Bo Yang et al. · Proceedings of the ACM on In... · 1 citation