Imperial College London
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Professor Pantelis Georgiou

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor of Biomedical Electronics
 
 
 
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Contact

 

+44 (0)20 7594 6326pantelis Website

 
 
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Location

 

902Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Miscourides:2018:10.1109/TBCAS.2018.2851448,
author = {Miscourides, N and Yu, L-S and Rodriguez-Manzano, J and Georgiou, P},
doi = {10.1109/TBCAS.2018.2851448},
journal = {IEEE Transactions on Biomedical Circuits and Systems},
pages = {1202--1214},
title = {A 12.8 k current-mode velocity-saturation ISFET array for on-chip real-time DNA detection},
url = {http://dx.doi.org/10.1109/TBCAS.2018.2851448},
volume = {12},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper presents a large-scale CMOS chemical-sensing array operating in current mode for real-time ion imaging and detection of DNA amplification. We show that the current-mode operation of ion-sensitive field-effect transistors in velocity saturation devices can be exploited to achieve an almost perfect linearity in their input-output characteristics (pH-current), which are aligned with the continuous scaling trend of transistors in CMOS. The array is implemented in a 0.35-m process and includes 12.8 k sensors configured in a 2T per pixel topology. We characterize the array by taking into account nonideal effects observed with floating gate devices, such as increased pixel mismatch due to trapped charge and attenuation of the input signal due to the passivation capacitance, and show that the selected biasing regime allows for a sufficiently large linear range that ensures a linear pH to current despite the increased mismatch. The proposed system achieves a sensitivity of 1.03 A/pH with a pH resolution of 0.101 pH and is suitable for the real-time detection of the NDM carbapenemase gene in E. Coli using a loop-mediated isothermal amplification.
AU  - Miscourides,N
AU  - Yu,L-S
AU  - Rodriguez-Manzano,J
AU  - Georgiou,P
DO  - 10.1109/TBCAS.2018.2851448
EP  - 1214
PY  - 2018///
SN  - 1932-4545
SP  - 1202
TI  - A 12.8 k current-mode velocity-saturation ISFET array for on-chip real-time DNA detection
T2  - IEEE Transactions on Biomedical Circuits and Systems
UR  - http://dx.doi.org/10.1109/TBCAS.2018.2851448
UR  - https://www.ncbi.nlm.nih.gov/pubmed/30010599
UR  - https://ieeexplore.ieee.org/document/8411180
UR  - http://hdl.handle.net/10044/1/61613
VL  - 12
ER  -
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