TY - JOUR
T1 - A Tri-Channel Oxide Transistor Concept for the Rapid Detection of Biomolecules Including the SARS-CoV-2 Spike Protein
AU - Lin, Yen-Hung
AU - Han, Yang
AU - Sharma, Abhinav
AU - AlGhamdi, Wejdan S.
AU - Liu, Chien-Hao
AU - Chang, Tzu-Hsuan
AU - Xiao, Xi-Wen
AU - Lin, Wei-Zhi
AU - Lu, Po-Yu
AU - Seitkhan, Akmaral
AU - Mottram, Alexander D.
AU - Pattanasattayavong, Pichaya
AU - Faber, Hendrik
AU - Heeney, Martin
AU - Anthopoulos, Thomas D.
N1 - KAUST Repository Item: Exported on 2021-11-13
PY - 2021/11/4
Y1 - 2021/11/4
N2 - Solid-state transistor sensors that can detect biomolecules in real time are highly attractive for emerging bioanalytical applications. However, combining upscalable manufacturing with the required performance remains challenging. Here we develop an alternative biosensor transistor concept that relies on a solution-processed In2O3/ZnO semiconducting heterojunction featuring a geometrically engineered tri-channel architecture for the rapid, real-time detection of important biomolecules. The sensor combines a high electron mobility channel, attributed to the electronic properties of the In2O3/ZnO heterointerface, in close proximity to a sensing surface featuring tethered analyte receptors. The unusual tri-channel design enables strong coupling between the buried electron channel and electrostatic perturbations occurring during receptor-analyte interactions allowing for robust, real-time detection of biomolecules down to attomolar (aM) concentrations. The experimental findings are corroborated by extensive device simulations, highlighting the unique advantages of the heterojunction tri-channel design. By functionalizing the surface of the geometrically-engineered channel with SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) antibody receptors, we demonstrate real-time detection of the SARS-CoV-2 spike S1 protein down to aM concentrations in under two minutes in physiological relevant conditions.
AB - Solid-state transistor sensors that can detect biomolecules in real time are highly attractive for emerging bioanalytical applications. However, combining upscalable manufacturing with the required performance remains challenging. Here we develop an alternative biosensor transistor concept that relies on a solution-processed In2O3/ZnO semiconducting heterojunction featuring a geometrically engineered tri-channel architecture for the rapid, real-time detection of important biomolecules. The sensor combines a high electron mobility channel, attributed to the electronic properties of the In2O3/ZnO heterointerface, in close proximity to a sensing surface featuring tethered analyte receptors. The unusual tri-channel design enables strong coupling between the buried electron channel and electrostatic perturbations occurring during receptor-analyte interactions allowing for robust, real-time detection of biomolecules down to attomolar (aM) concentrations. The experimental findings are corroborated by extensive device simulations, highlighting the unique advantages of the heterojunction tri-channel design. By functionalizing the surface of the geometrically-engineered channel with SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) antibody receptors, we demonstrate real-time detection of the SARS-CoV-2 spike S1 protein down to aM concentrations in under two minutes in physiological relevant conditions.
UR - http://hdl.handle.net/10754/673322
UR - https://onlinelibrary.wiley.com/doi/10.1002/adma.202104608
U2 - 10.1002/adma.202104608
DO - 10.1002/adma.202104608
M3 - Article
C2 - 34738258
SN - 0935-9648
SP - 2104608
JO - Advanced Materials
JF - Advanced Materials
ER -