RPI ID: 2018-041-401
Innovation Summary: This technology employs heterodimensional plasmonic structures—nanodots, nanowires, nanotubes or similar—to form junctions with an active electron/hole gas layer and create tunable plasmon resonances. Gate biasing and engineered asymmetry enable resonance control for detection, mixing, multiplication, or emission in the 100 GHz to THz regime. Arrays with varied parameters or periodic modulation broaden or tailor bandwidth. The platform is compatible with Si, GaN, InGaAs, and graphene, offering integration paths with mainstream semiconductor processes. Multiple contact geometries (continuous, split, cross) support device optimization for responsivity and noise performance.
Challenges & Opportunities: Challenges include nanofabrication uniformity, parasitic impedance control, and thermal management at high frequencies. Coupling free‑space or guided THz energy efficiently into compact devices requires careful antenna or metamaterial design. Packaging must preserve plasmonic behavior while enabling gating and low‑loss interconnects. Opportunities span THz sensing, non‑destructive testing, spectroscopy, and high‑data‑rate communications. Compatibility with CMOS‑adjacent materials opens avenues for scalable arrays and on‑chip THz systems. Tunability provides a path to multi‑band detectors and mixers.
Key Benefits: ✓ Tunable plasmonic resonance via gate bias/asymmetry ✓ Works from 100 GHz into THz bands ✓ Material flexibility (Si, GaN, InGaAs, graphene) ✓ Array/periodic modulation for bandwidth shaping ✓ Multiple contact geometries for performance tuning
Applications: • THz imaging and spectroscopy • Security screening and non‑destructive evaluation • Wireless backhaul and ultra‑fast links • Chemical/biological sensing • Astronomy and atmospheric studies
Keywords: Terahertz; sub‑THz; plasmonics; heterodimensional junction; FET detector; graphene; GaN; tunable resonance
Intellectual Property: Issued US Patent No. 12,464,834