Flexible pH sensor based on a conductive PANI membrane for pH monitoring

Abstract

A conductimetric flexible film pH sensor working in sensing materials of PANI membrane was developed for clinic wound monitoring.

Flexible potentiometric pH sensors for wearable systems

“…For these reasons the development of solid-state pH sensors on various exible substrates using sensitive materials ranging from metal oxides (MO x ) and semiconductors to polymers and carbonbased materials is a growing area of research in electrochemical sensing technologies. 8 Electrochemical pH sensors of this kind can generally be categorized as potentiometric, 36,37 conductimetric/chemi-resistors [38][39][40][41] or ion sensitive eld effect transistors (ISFET) [42][43][44] etc. The potentiometric pH sensors are discussed here in detail (Section 3 given design) as they offer stable performance, high sensitivity, less interference, easiness in wireless system, low power, long lifetime and fast response as compared to other type of pH sensors.…”

Hot Embossing Process Technology Forming Arbitrary Patterns in Real Time

“…[ 19 ] Moreover, we expect that this method could be used for pH sensor production, which requires a 30–100 µm thick comb structure. [ 20 ] Through an example where a micropattern is required, we demonstrate that the proposed process can be widely applied not only to biosensors but also to industries that require various user‐defined patterns on a microscale.…”

Recent Advances in Optical, Electrochemical and Field Effect pH Sensors

“…The authors analyzed the sensitivity of the device after sterilization with an autoclave and observed a slight variation that depended on the glass transition of the membrane used as RE. A PANI nanofiber tested in buffer solution led to a superNernstian response (63 mV/pH) [55], whereas a slightly smaller sensitivity was obtained after coating gold interdigitated electrodes with PANI (58.57 mV/pH in the range pH 5.45-8.62, Figure 3B) [56].…”

“…Furthermore, measurements were performed in real matrices (urine, saliva, sweat, and human tears) and results were comparable with those of a commercial pH meter. [56], published by The Royal Society of Chemistry). (C) Paper-based pH sensor using rGO functionalized with 3-(4-aminophenil)propionic acid (reprinted from [71] with the permission of IEEE).…”