Two-birds-one-stone: Flexible PANI film with bionic microstructures for multifunctional sensing of physical and chemical stimuli

•Structured flexible and transparent PANI film is designed via an ecofriendly and scalable fabrication approach.•The flexible multifunctional sensors present highly sensitivity to different stimuli, including pressure and VOC gas.•A high sensitivity (1.104 kPa-1) with ultra-low detection limits (0.64 Pa).•High Moisture resistance and a response value as low as 10 ppb to NH3.•It has potential applications in electronic skin, healthcare detection.