Samarjith
Biswas

Dynamic Topological Acoustics

Pioneering research on GST (Ge₂Sb₂Te₅) phase-change materials that enable frequency-selective wave routing without geometric reconfiguration. My work demonstrates anti-resonance driven directional wave propagation, where specific frequencies create unidirectional transport while others enable bidirectional propagation.

This research establishes a new paradigm for reconfigurable phononic systems by leveraging the reversible crystalline-to-amorphous phase transition in GST. Unlike traditional approaches requiring physical modification of lattice geometry, our PCM-based method achieves dynamic tunability through thermal or electrical stimuli, enabling real-time control of acoustic wave pathways at frequencies up to ~200 MHz.

Topological RF Devices

Creating one-way acoustic waveguides for next-generation 5G/6G telecommunications with 75% faster AI-driven optimization cycles. Our Surface Acoustic Wave (SAW) devices leverage topological protection to achieve unprecedented signal isolation and frequency selectivity.

Traditional RF filters suffer from crosstalk and signal degradation at high frequencies. By implementing topologically protected channels in piezoelectric substrates, we create filters with sharp frequency cutoffs and minimal insertion loss—critical for the dense spectrum allocation required by emerging 6G standards.

Our AI-accelerated design pipeline combines physics-informed neural networks with high-throughput COMSOL simulations, reducing the typical 6-month design cycle to under 6 weeks while achieving performance metrics that exceed conventional approaches by 15-20%.