Figure 4.
In situ bioelectronic fiber production by inflight fiber printing (iFP)
Shown is a one-step approach to print functional fibers with in situ circuit connections for building bioelectronic fiber devices.
(A) Schematic illustrations of iFP and the in situ fiber-circuit bond and fiber junction formation processes. Inset: electrically connected junction formed between two crossing PEDOT:PSS fibers.
(B) The printed PEDOT:PSS fiber array could be used as an impedimetric cell-interfacing sensor to monitor cell interactions with the fibers through impedance change.
(C) Hierarchical assembly with PEDOT:PSS fibers building blocks creating permissive 3D wearable bioelectronics, such as a multi-latitude breath analyzer to monitor exhalation strength (e.g., breathing, coughing) and sound. Adapted with permission.24 Copyright 2020, Wang et al.