Imperial College London


Faculty of MedicineDepartment of Surgery & Cancer

Senior Lecturer



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BibTex format

author = {Zhang, K and Chen, C-M and Anastasova, S and Gil, B and Lo, B and Assender, H},
doi = {10.1109/BSN.2019.8771092},
publisher = {IEEE},
title = {Roll-to-roll processable OTFT-based amplifier and application for pH sensing},
url = {},
year = {2019}

RIS format (EndNote, RefMan)

AB - The prospect of roll-to-roll (R2R) processable Organic Thin Film Transistors (OTFTs) and circuits has attracted attention due to their mechanical flexibility and low cost of manufacture. This work will present a flexible electronics application for pH sensing with flexible and wearable signal processing circuits. A transimpedance amplifier was designed and fabricated on a polyethylene naphthalate (PEN) substrate prototype sheet that consists of 54 transistors. Different types and current ratios of current mirrors were initially created and then a suitable simple 1:3 current mirror (200nA) was selected to present the best performance of the proposed OTFT based transimpedance amplifier (TIA). Finally, this transimpedance amplifier was connected to a customized needle-based pH sensor that was induced as microfluidic collector for potential disease diagnosis and healthcare monitoring.
AU - Zhang,K
AU - Chen,C-M
AU - Anastasova,S
AU - Gil,B
AU - Lo,B
AU - Assender,H
DO - 10.1109/BSN.2019.8771092
PY - 2019///
SN - 2376-8886
TI - Roll-to-roll processable OTFT-based amplifier and application for pH sensing
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ER -