Biometric signatures based on either the physiological or behavioural features of a person have been widely used for identification and authentication. However, few strategies have been developed that combine the two types of features in one signature. Here, we report a type of biometric signature based on the triboelectricity of the human body (TEHB) that combines these two types of features. This

Human-computer interaction (HCI) strategies communicate the human mind and machine intelligence based on different devices and technologies. The majority of HCI strategies assume normal physical conditions that limit accessibility for users with disabilities. Certain products, such as Braille keyboards, work fine for people with specific disabilities. However, a more general HCI strategy that can neglect

Triboelectric nanogenerators (TENGs) are superb candidates to harvest low-frequency energy from water waves, wind, and ambient vibrations. They consist of triboelectrically-charged dielectric materials in relative motion and have been realized experimentally in several configurations and geometries. In this work, we provide a detailed mathematical analysis and fast computational method for designing

As an important part of hydraulic system, hydraulic oil pollution will seriously affect the service life of the system. Therefore, the pollution control of hydraulic oil is crucial to the normal operation of the hydraulic system. A high-efficiency filtration device for engineering polluted hydraulic oil based on triboelectric-coagulation is designed. Different from traditional agglomeration filtration