@inproceedings{563f63f5c8d2441ea7e9e14e568f8882,
title = "Tunable sensitivity and linearity of self-assembled carbon nanotube composite based pH biosensors using silica nanoparticles",
abstract = "We describe tunable sensitivity and linearity of layer-by-layer (LbL) self-assembled single-walled carbon nanotube (SWCNT) thin-film composites as a pH sensor by means of silica nanoparticles (SNPs). The SWCNT thin-film devices without and with SNP layer were fabricated with LbL self-assembly and characterized electrochemically in pH buffers. The role of SNPs in SWCNT thin-film chemoresistors and ISFETs is proven to increase and linearize the sensitivity to pH. The linearization in presence of SNP layer is attributed to a positive shift in pH gating voltage in p-type semiconducting SWCNTs. Two types of sensitivity, linear and exponential behaviors found with and without SNP layer, are useful for developing biosensors.",
keywords = "Carbon nanotube, ISFET, chemoresistor, pH sensor, silica nanoparticle",
author = "Dongjin Lee and Tianhong Cui",
year = "2011",
doi = "10.1109/TRANSDUCERS.2011.5969302",
language = "English (US)",
isbn = "9781457701573",
series = "2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11",
pages = "2219--2222",
booktitle = "2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11",
note = "2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11 ; Conference date: 05-06-2011 Through 09-06-2011",
}