Strain engineering emerges as next frontier for faster, efficient computing
Bengaluru: As today’s computer chips approach the physical limits of using electric currents, scientists are turning to mechanical force at the atomic scale to unlock the next leap in speed and efficiency.
The technique, called “strain engineering,” uses precise squeezing or stretching to alter how materials behave. By physically deforming the grid of atoms in a material — its crystal lattice — researchers can change key electronic properties.
That means a material’s ability to conduct electricity or store magnetic data can be tuned without changing its chemical composition. In practice, applying controlled mechanical pressure at the atomic level can make electrons move faster, reduce energy loss, or improve how bits of magnetic information are stored.
The approach is gaining attention because conventional silicon-based chips are nearing limits in power efficiency and speed gains from shrinking transistors further. Strain engineering offers a way to boost performance of existing materials rather than relying solely on new chemistries or smaller circuits.
Labs worldwide are testing strained materials for use in transistors, memory chips, and spintronic devices that use electron spin instead of charge. If scaled commercially, the method could help build computers that run faster while using less power.
Scientists caution that applying uniform strain at nanometer scales remains a manufacturing challenge. But early results suggest mechanical control of materials could become a critical tool as the industry looks “beyond electric currents” for future computing.
