Fig. 6.

Flexible as well as wearable sensor for detection of small molecules like ascorbic acid, uric acid, and so on. a Manufacturing of laser scribed paper board (source: reprinted from Thiago R. L. C. Paixão, Lúcio Angnes, José R. Silva, et al, Single-step reagentless laser scribing fabrication of electrochemical paper-based analytical devices, Angewandte Chemie, 129 (2017) 5, with permission from Elsevier). b LSG and Pt/LSG electrode patterns on PI sheet (Source: Reprinted from Pranati Nayak, Narendra Kurra, Chuan Xia, and Husam N. Alshareef.- Highly efficient laser scribed graphene electrodes for on-chip electrochemical sensing application, Advanced Electronic Materials, 2 (2016) 1–11, with permission from Elsevier). c Diagrammatic representation of Pt/rGO sensor fabricated by Zan et al. for detection of DA secreted by live PC 12 cells (source: reprinted from Xiaoli Zan Hongwei Bai, Chenxu Wang, Faqiong Zhao, and Hongwei Dua - Graphene paper decorated with a 2D array of dendritic platinum nanoparticles for ultrasensitive electrochemical detection of dopamine secreted by live cells-, Chemsitry, 22 (2016) 5240–5210,https://creativecommons.org/licenses/by-nc-nd/4.0/, https://chemistryeurope.onlinelibrary.wiley.com/doi/full/10.1002/chem.201504454