Quantum effect-based flexible and transparent pressure sensors with ultrahigh sensitivity and sensing density

摘要

Typical scanning transmission electron microscopy (STEM) images showing the UHCSs and the thickness of the shell. Scale bar: 250 nm. Typical transmission electron microscopy (TEM) images showing the spine length and the tip diameter of the sphere. Scale bars: 200 and 60 nm. Photo of the peeled-off thin film in a petri dish. Scale bar: 15 mm. Light transmittance from 400 to 1500 nm. Optical photography of the urchin-like hollow carbon sphere polydimethylsiloxane film (UHCS-PDMS) pressure sensor on a fingertip and three-dimensional scheme of the tiny sensor. Scale bars: 10 mm and 3 μm.