skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Laser-Induced Carbon-Based Smart Flexible Sensor Array for Multiflavors Detection

Abstract

We report a flexible sensor array electronic tongue system that is fabricated on a polymer substrate by the laser direct writing process for multiflavor detection. Electronic tongue is a sensing system that is applied to detect different elements with the same sensor array. By analyzing responses from different measurement units, it enables a cross-sensitivity, namely, the ability of the system to responding to a range of different analytes in solution without specific functionalization of sensors. In this article, a six-unit sensing array system was fabricated by a laser direct writing process. Sensing units were introduced on a flexible polyamide surface. A high surface–volume ratio porous carbon structure was created by a laser-induced carbonization process, which provides stable conductive carbon electrodes with high sensitivity. Different surface treatments, such as gold plating, reduced-graphene oxide coating, and polyaniline coating, were accomplished for different measurement units. By applying principal component analysis, this sensing system shows a promising result for the detection of multiple flavors. The detection limit for each element is about 0.1 mM for NaCl and sugar solutions. Also, it is able to detect 10 –4 times diluted commercial table vinegar solution, which originally contains 5% acetic acid. The detection limit is theoreticallymore » lower than the human threshold of 10 mM for NaCl and sugar. Besides, the sensing system shows a high sensitivity and selectivity for mixed elements. Here, by mapping the data points, the sensor system could detect flavor combinations and provide a reliable prediction of analyte concentration ratios.« less

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1];  [1]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1570899
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 10; Journal Issue: 40; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; e-tongue; laser direct writing; sensor array; multidetection; laser fabrication; carbon-based sensor

Citation Formats

Yu, Yongchao, Joshi, Pooran C., Wu, Jayne, and Hu, Anming. Laser-Induced Carbon-Based Smart Flexible Sensor Array for Multiflavors Detection. United States: N. p., 2018. Web. doi:10.1021/acsami.8b12626.
Yu, Yongchao, Joshi, Pooran C., Wu, Jayne, & Hu, Anming. Laser-Induced Carbon-Based Smart Flexible Sensor Array for Multiflavors Detection. United States. doi:10.1021/acsami.8b12626.
Yu, Yongchao, Joshi, Pooran C., Wu, Jayne, and Hu, Anming. Fri . "Laser-Induced Carbon-Based Smart Flexible Sensor Array for Multiflavors Detection". United States. doi:10.1021/acsami.8b12626. https://www.osti.gov/servlets/purl/1570899.
@article{osti_1570899,
title = {Laser-Induced Carbon-Based Smart Flexible Sensor Array for Multiflavors Detection},
author = {Yu, Yongchao and Joshi, Pooran C. and Wu, Jayne and Hu, Anming},
abstractNote = {We report a flexible sensor array electronic tongue system that is fabricated on a polymer substrate by the laser direct writing process for multiflavor detection. Electronic tongue is a sensing system that is applied to detect different elements with the same sensor array. By analyzing responses from different measurement units, it enables a cross-sensitivity, namely, the ability of the system to responding to a range of different analytes in solution without specific functionalization of sensors. In this article, a six-unit sensing array system was fabricated by a laser direct writing process. Sensing units were introduced on a flexible polyamide surface. A high surface–volume ratio porous carbon structure was created by a laser-induced carbonization process, which provides stable conductive carbon electrodes with high sensitivity. Different surface treatments, such as gold plating, reduced-graphene oxide coating, and polyaniline coating, were accomplished for different measurement units. By applying principal component analysis, this sensing system shows a promising result for the detection of multiple flavors. The detection limit for each element is about 0.1 mM for NaCl and sugar solutions. Also, it is able to detect 10–4 times diluted commercial table vinegar solution, which originally contains 5% acetic acid. The detection limit is theoretically lower than the human threshold of 10 mM for NaCl and sugar. Besides, the sensing system shows a high sensitivity and selectivity for mixed elements. Here, by mapping the data points, the sensor system could detect flavor combinations and provide a reliable prediction of analyte concentration ratios.},
doi = {10.1021/acsami.8b12626},
journal = {ACS Applied Materials and Interfaces},
number = 40,
volume = 10,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share: