Science

Unlocking the Secrets of Quantum Fluidity in Graphene

2025-09-15

Author: Ming

A Groundbreaking Discovery in Quantum Physics

In a dazzling collaboration, researchers from the Indian Institute of Science, Harvard University, and the National Institute for Materials Science in Tsukuba, Japan, have uncovered a remarkable phenomenon in graphene: the Dirac fluid. This bizarre state of matter allows electrons to flow harmoniously as a collective quantum liquid, shattering the traditional view of particle behavior.

The Tipping Point of Another Dimension

Nestled at graphene's Dirac point, a unique electronic equilibrium between metallic and insulating states, researchers made an astonishing observation. They found that electrical and thermal conductivities, instead of conforming to established laws, behaved in an unexpectedly inverse manner. Enhancing charge flow impaired heat transport and vice versa—breaking the mold of classic physics by a staggering factor of 200!

Exploring the Quantum Realm

This extraordinary violation reveals that in this Dirac fluid, charge and heat are synchronized under a universal quantum of conductance. Even more tantalizing is the fluid's viscosity, which approaches the theoretical limit for quantum fluids, reminiscent of the elusive quark-gluon plasma previously thought to only exist in the most extreme environments, like high-energy particle colliders.

Implications for Fundamental Physics

These groundbreaking findings position graphene as the first material to exhibit such universal transport characteristics in a laboratory setting. This opens up an exciting frontier for investigating high-energy physics concepts—think black hole thermodynamics and entropy scaling—on a simple tabletop made of just a sheet of carbon.

A Leap Towards Advanced Technology

Beyond the confines of theoretical science, the minimally viscous Dirac fluid in graphene holds the potential to revolutionize quantum sensing technology. It could lead to the development of advanced sensors capable of amplifying faint electrical signals and detecting incredibly weak magnetic fields, propelling us into a new era of technological innovation.