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Mechanical Engineering
Hasan Al Babaa headshot

Hasan Al Babaa

Visiting Assistant Professor of Mechanical Engineering
Steinmetz Hall 218
(518)388-6894
albabaah@union.edu
Google Scholar
ME

Areas of expertise

Vibrations, Structural Dynamics, Wave Propagation, Periodic Structures, Electromechanical Systems, Active Control of Dynamic Systems.

Research interests

I am a researcher who is passionate about tackling one of engineering's most fundamental challenges—controlling elastic waves and mechanical vibrations. My research integrates structural dynamics, wave propagation, applied mathematics, and control theory. The goal is to develop innovative methods for vibration mitigation and wave control in complex dynamic systems.

At the heart of my work are Elastic Metamaterials and Phononic Crystals, materials at the cutting edge of the field. Unlike traditional materials, their carefully engineered periodic structures provide unprecedented control over waves, enabling exotic phenomena like vibration attenuation, wave cloaking, negative refraction, and one-way transmission. I am dedicated to pushing the boundaries of these materials, inventing theoretical concepts for next-generation practical applications that can enhance everything from aerospace components to civil infrastructure.

Teaching interests

Engineering Mechanics, Dynamics of Systems, Applied Mathematics, Engineering Graphics.

Publications

1. H. Al Ba’ba’a, "Onset of wavenumber bandgaps via alternating Willis coupling signs", Mechanics Research Communications, 146, 104401 (2025).

2. H. Al Ba’ba’a, “Zero-frequency corner modes in mechanical graphene”, Wave Motion, 124,103291 (2024).

3. H. Al Ba’ba’a, “Brillouin-zone definition in non-reciprocal Willis monatomic lattices”, JASA Express Letters, 3 (12), 120001 (2023).

4. H. Al Ba’ba’a, C. Willey, V. Chen, A. Juhl, and M. Nouh, “Theory of truncation resonances in continuum rod-based phononic crystals with generally asymmetric unit cells”, Advanced Theory and Simulations, 6 (2), 2200700 (2023) [Cover Image].

5. K. H. Lee, H. Al Ba’ba’a, K. Yu, K. Li, Y. Zhang, H. Du, S. F. Masri, and Q. Wang, “Magnetoactive Acoustic Topological Transistors”, Advanced Science, 9 (18), 2201204 (2022).

6. H. Al Ba’ba’a, Z. Lin, and S. Tol, “Metadamping enhancement and tunability via scissor-like electromechanical metamaterials”, Journal of Applied Physics, 130 (18), 184901 (2021).

7. H. Al Ba’ba’a, S. Nandi, T. Singh, and M. Nouh, “Uncertainty quantification of tunable elastic metamaterials using polynomial chaos”, Journal of Applied Physics, 127 (1), 015102 (2020) [Featured Article].

8. H. Al Ba’ba’a, J. Callanan, and M. Nouh, “Emergence of pseudo-phononic gaps in periodically architected pendulums”, Frontiers in Materials, 6, 119 (2019).

9. H. Al Ba’ba’a, J. Callanan, M. Nouh, and T. Singh, “Band gap synthesis in elastic monatomic lattices via input shaping”, Meccanica, 53 (11), 3105–3122 (2018).

10. H. Al Ba’ba’a, M. Nouh, and T. Singh, “Formation of local resonance band gaps in finite acoustic metamaterials: A closed-form transfer function model”, Journal of Sound and Vibration, 410, 429-446 (2017).

11. H. Al Ba’ba’a, T. Elgammal, and R. Amano, “Correlations of bubble diameter and frequency for air-water system based on orifice diameter and flow rate”, Journal of Fluids Engineering, 138 (11), 114501 (2016).

Additional media

Academic credentials

B.S., The Hashemite University; M.S., University of Wisconsin – Milwaukee; Ph.D., State University of New York at Buffalo