Why tiny droplets stick or bounce: The physics of speed and size
Peer-Reviewed Publication
Updates every hour. Last Updated: 30-Dec-2025 08:11 ET (30-Dec-2025 13:11 GMT/UTC)
Recent research at the Cavendish Laboratory, University of Cambridge, in collaboration with the University of Bath, has shown that whether a droplet of liquid sticks or bounces depends on its speed and size, rather than solely on how water-repellent the surface is. Understanding the physics that govern microdroplet behaviour can help improve processes that affect our daily lives, from diseases to crop spray and from inkjet printing to pollution.
Adding an electrical jolt to fermentation of industrial food waste speeds up the process and increases the yield of platform chemicals that are valuable components in a wide range of products, new research shows. Researchers also discovered that combining two bacterial species in the electro-fermentation mix not only helped accelerate the process, but allowed for more targeted chemical production.
Today, when an aging parent, relative, or friend starts to forget things, a firm diagnosis can be surprisingly elusive.
Even for Alzheimer’s disease, which is the most common dementia, clinicians lean on behavioral observations to diagnose patients. Brain scans and blood tests are much less conclusive. The most definitive diagnosis for any dementia only occurs after death.
AIP is pleased to announce Smitha Vishveshwara as the winner of the 2025 Andrew Gemant Award. Vishveshwara was chosen “for [her] years of creatively blending science teaching, theater, and art in ways that inspire and communicate the principles and elegance of physics through artistic expression.” The Gemant Award recognizes the accomplishments of a person who has made significant contributions to the cultural, artistic, or humanistic dimension of physics.