Friction force microscopy (FFM) of materials with well-defined crystalline surfaces is interpreted within the framework of the Prandtl–Tomlinson (PT) model. This model portrays the interaction with a ...

Focused airborne ultrasound provides various noncontact spatiotemporal pressure patterns on the skin. However, the presentation of static force remains an untouched issue because the static radiation ...

Stair negotiation demands greater muscular strength in challenging for those who have lower limb impairments while climbing stairs. To overcome the challenges on stairs, stair handrail device has been ...