Johnson-Kendall-Roberts (JKR) theory

The Johnson-Kendall-Roberts (JKR) theory describes how small, soft objects like rubber or biological tissues stick and deform when pressed together. It explains the balance between the attractive forces at the contact surface and the objects’ elasticity, which causes them to flatten and create a larger contact area. This theory helps predict how much two materials will stick and how they will deform under pressure, considering both their surface forces and their ability to deform. It is widely used in fields like material science and medicine to understand and measure adhesion between soft materials.