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Figure 8. Fluidic-based soft control systems (A) A check-valve and switch-valve in both the open and closed state based on differential
pressure and their corresponding component state symbol along with the analog diode and p-channel JFET transistor components.
Reproduced with permission [145] . Copyright 2010, Springer Nature; (B) Showing the different components for actuation, control and
sensing to create autonomous crawling systems combining bistable valves, soft logic gates and soft pneumatic actuators [143,144] .
Reproduced with permission [143] . Copyright 2021, AAAS. JFET: Junction field-effect transistor; AAAS: American Association for the
Advancement of Science.
