In a groundbreaking discovery, researchers at the University of California, Santa Barbara (UCSB) have unveiled a new understanding of electron-phonon interactions in two-dimensional (2D) semiconductors. Their findings, published recently, could revolutionize the design of electronic devices, making them more energy-efficient.
Traditionally, electron-phonon interactions have been viewed as detrimental to electrical conductivity. However, UCSB researchers found that in 2D materials, these interactions can conserve momentum and energy, potentially enhancing conductivity. This phenomenon, termed "coupled electron-phonon hydrodynamics," suggests a more efficient energy transport system.
Mechanical engineers Bolin Liao and Yujie Quan conducted simulations, revealing that electrons and phonons behave collectively like a fluid. This opens the door to highly efficient electrical conductivity, even at room temperature, offering a practical alternative to ultra-low temperature superconductivity.
These advancements have significant implications for semiconductor design. By engineering materials to promote momentum-conserving collisions, we can create devices that use less energy. The research also highlights the potential of 2D materials for next-generation electronics, including spin-based and charge-based transistors.
In related news, UCSB materials assistant professor Daniel Oropeza received the 2025 Global Young Investigator Award. This recognition underscores the growing progress in utilizing 2D materials for advanced electronic applications.