Ultrasonic espresso brewed at room temperature matched traditional shots in blind taste tests while cutting energy use by 75% ...

One thing most coffee lovers agree on is that good espresso starts with hot water. A team of researchers in Australia is ...

Scientists brew espresso using room-temperature water and sound waves. Researchers at UNSW Sydney have created a new way to ...

Most of us think of espresso as a hot, high-pressure ritual. Finely ground coffee goes into a machine, boiling water is forced through it, and in about 30 seconds we get a concentrated shot with crema ...

Stacey Leasca is an award-winning journalist with nearly two decades of newsroom experience. She is also the co-founder of Be a Travel Writer, an online course for the next generation of travel ...

Wave frequency is a critical parameter for applications ranging from human hearing, acoustic non-reciprocity, medical imaging to quantum of energy in matter. Frequency alteration holds the promise of ...

The absorption of airborne sound is still a subject of active research, and even more since the emergence of acoustic metamaterials. Although being subwavelength, the screen barriers developed so far ...