Publications by authors named "Hai-Thai Nguyen"
Optical rectennas extend the electromagnetic wave rectification process into the visible regime and provide a route toward high-performance photodetection and energy harvesting. Here, the promise of 2D materials toward on-chip optical rectennas is demonstrated. A self-aligned patterning process yields lateral MIM structures where a nanometer-sized air gap separates a 2D material contact from a metal electrode.
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- - Researchers observed ferroelectric properties in a 2D phase of water ice, created by confining it between two graphene layers at room temperature, demonstrating a strong, permanent dipole influenced by external electric fields.
- - They found that for ferroelectric ordering to occur, a monolayer of 2D ice is necessary, with findings supported by both simulations and tests on water's partial pressure and temperature.
- - The unique properties of this 2D ice allow for the development of new nanoelectromechanical devices with memory capabilities, showing significant switching performance and durability without degradation over numerous cycles.
Lateral tunnel junctions are fundamental building blocks for molecular electronics and novel sensors, but current fabrication approaches achieve device yields below 10%, which limits their appeal for circuit integration and large-scale application. We here demonstrate a new approach to reliably form nanometer-sized gaps between electrodes with high precision and unprecedented control. This advance in nanogap production is enabled by the unique properties of 2D materials-based contacts.
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