Fig. 11: Sensing mechanism and characteristic testing of FBES.
From: Flexible brain electronic sensors advance wearable brain-computer interface
a Pressure response of the microstructured PDMS99 Copyright 2010, Trung et al. b Left: Placement of the ultrasound patch and schematic diagram of the structure of cerebral arteries, right: diagram of the layered structure of the ultrasonic patch104 Copyright 2024, Zhou et al. c Schematic diagram of SB-TENG rolling soft spheres with and without PTFE powder on Cu surface; (d) Open circuit voltage and transfer charge using SB-TENG with and without two soft spheres with PTFE powder. Reproduced with permission105, Copyright 2023 Wiley‐VCH GmbH.
