Energy Efficiency

1 article

Espresso being brewed using ultrasonic waves at room temperature, showcasing UNSW Sydney's energy-efficient coffee innovation.

UNSW Sydney uses ultrasonic waves for energy efficient espresso

At UNSW Sydney, researchers have successfully brewed espresso-strength coffee using only room-temperature water and ultrasonic sound waves, cutting energy consumption by 75%.

Shira Golan·June 13, 2026