Ag and Pt nanoparticle loaded laser induced graphene for enhanced capacitive glucose sensing
Ag and Pt nanoparticle loaded laser induced graphene for enhanced capacitive glucose sensing
Laser-induced graphene (LIG) electrodes have gained interest for non-enzymatic analyte sensing applications due to their low cost, flexibility, and favorable electrochemical properties. In this study, we investigate the effects of Ag and Pt nanoparticle (NP) surface modification on the capacitive glucose sensing performance of LIG electrodes. LIG was fabricated at varying laser fluences and subsequently decorated with different NP loadings to evaluate interfacial capacitance changes in 1 M KCl electrolyte. Electrochemical characterization revealed that a 10 μg ml−1 NP loading concentration yielded the highest sensitivity — 0.0449 and 0.052 mF (mM·cm)−2 for Ag- and Pt-modified LIG, respectively — with the lowest detection limit of 1.29 μM achieved by Ag-LIG. Although the study is limited to controlled electrolyte conditions without interference or selectivity tests, the results demonstrate a measurable enhancement in glucose sensitivity compared to pristine LIG. These findings support the potential of metal-NP loaded LIG for cost-effective glucose sensing in high-concentration environments such as food fermentation monitoring.
Laser-induced graphene, capacitance, carbon, flexible, sensor
Ling, Ivan
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Goh, Rou Xuan
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Sultan, Suhana
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Gan, Khong
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Pu, Suan Hui
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Chong, Harold
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13 February 2026
Ling, Ivan
c985f2ee-c76b-4559-b9ff-9bcddda8a3cb
Goh, Rou Xuan
11dd6705-ea24-40ad-942e-1df848df7c07
Sultan, Suhana
e2b3b6fe-15d7-49ac-941b-e109a6e16814
Gan, Khong
b0c1e988-d375-4bbc-acdc-c77a6da1f904
Pu, Suan Hui
8b46b970-56fd-4a4e-8688-28668f648f43
Chong, Harold
795aa67f-29e5-480f-b1bc-9bd5c0d558e1
Ling, Ivan, Goh, Rou Xuan, Sultan, Suhana, Gan, Khong, Pu, Suan Hui and Chong, Harold
(2026)
Ag and Pt nanoparticle loaded laser induced graphene for enhanced capacitive glucose sensing.
IoP Publishing, 8 (035411), [035411].
(doi:10.1088/2631-8695/ae408a).
Abstract
Laser-induced graphene (LIG) electrodes have gained interest for non-enzymatic analyte sensing applications due to their low cost, flexibility, and favorable electrochemical properties. In this study, we investigate the effects of Ag and Pt nanoparticle (NP) surface modification on the capacitive glucose sensing performance of LIG electrodes. LIG was fabricated at varying laser fluences and subsequently decorated with different NP loadings to evaluate interfacial capacitance changes in 1 M KCl electrolyte. Electrochemical characterization revealed that a 10 μg ml−1 NP loading concentration yielded the highest sensitivity — 0.0449 and 0.052 mF (mM·cm)−2 for Ag- and Pt-modified LIG, respectively — with the lowest detection limit of 1.29 μM achieved by Ag-LIG. Although the study is limited to controlled electrolyte conditions without interference or selectivity tests, the results demonstrate a measurable enhancement in glucose sensitivity compared to pristine LIG. These findings support the potential of metal-NP loaded LIG for cost-effective glucose sensing in high-concentration environments such as food fermentation monitoring.
Text
Goh_2026_Eng._Res._Express_8_035411
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Accepted/In Press date: 2 February 2026
Published date: 13 February 2026
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© 2026 The Author(s). Published by IOP Publishing Ltd.
Keywords:
Laser-induced graphene, capacitance, carbon, flexible, sensor
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Local EPrints ID: 511805
URI: http://eprints.soton.ac.uk/id/eprint/511805
PURE UUID: d2e955e6-9c94-4124-b0f8-c563ae80f0e7
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Date deposited: 03 Jun 2026 16:45
Last modified: 04 Jun 2026 02:13
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Contributors
Author:
Ivan Ling
Author:
Rou Xuan Goh
Author:
Suhana Sultan
Author:
Harold Chong
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