ArticleMicrosystems & nanoengineering2026
Antibody-detecting resistive biosensor for protein biomarkers.
Article in Microsystems & nanoengineering, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
Funding
Abstract
Proteins serve as important biomarkers for clinical diagnostics, and a simple detection method for point-of-care applications is highly desirable. We developed an antibody-detecting resistive biosensor that utilizes a conductive network of gold (Au) nanoparticles for the detection of protein biomarkers. The proposed biosensor comprises two electrodes bridged by a functional film comprising Au nanoparticles, a polymer matrix, and target-specific antibodies, and the nanoparticle concentration is selected within an experimentally identified percolation transition region to achieve high sensitivity to small changes in resistance. In experiments, the electrical response of the proposed biosensor showed reliable concentration-dependent behavior, consistent with charge-mediated modulation of electron transport within the conductive network. When applied to detecting urinary growth differentiation factor-15 (GDF-15) as the target protein, the proposed biosensor exhibited a detection range of 23.4-1500 pg/mL and a fast response time of approximately 30 s, which would allow the tracking of dynamic changes in protein concentration. These results demonstrate that the proposed biosensor provides a simple and effective method for detecting various biomarkers in real time. The sensing concept may be extendable to other antigen-antibody systems, providing a potential general platform for biomolecular sensing.
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Registered trials
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