Tunable nanophotonics enabled by chalcogenide phase-change materials

Nano-Encapsulated Smart Tunable Phase Change Materials

Bipolar switching in chalcogenide phase change memory

Phase change materials based on chalcogenides are key enabling technologies for optical storage, such as rewritable CD and DVD, and recently also electrical nonvolatile memory, named phase change memory (PCM). In a PCM, the amorphous or crystalline phase affects the material band structure, hence the device resistance. Although phase transformation is extremely fast and repeatable, the amorphou...

Forced Ion Migration for Chalcogenide Phase Change Memory Device

Tunable hyperbolic metamaterials utilizing phase change heterostructures

Tunable hyperbolic metamaterials utilizing phase change heterostructures" (2014).

Inducing chalcogenide phase change with ultra-narrow carbon nanotube heaters

Carbon nanotube CNT heaters with sub-5 nm diameter induce highly localized phase change in Ge2Sb2Te5 GST chalcogenide. A significant reduction in resistance of test structures is measured as the GST near the CNT heater crystallizes. Effective GST heating occurs at currents as low as 25 A, significantly lower than in conventional phase change memory with metal electrodes 0.1– 0.5 mA . Atomic for...