Publications by authors named "Uddipan Dasgupta"
Article Synopsis
- A new immunoassay combines magnetic iron oxide nanoparticles (FeONPs) and gold-silver bimetallic nanoparticles (AuAgNPs) to improve the sensitivity of virus detection, specifically targeting dengue virus-like particles (DENV-LP).
- The assay utilizes a colorimetric signal amplification method involving TMB/HO to enhance detection, achieving a wide detection range of DENV-LP concentrations from 10 to 100 pg/mL, with a remarkable detection limit of 2.6 fg/mL.
- The synergistic interaction between FeONPs and AuAgNPs boosts the enzymatic reaction rate, making this nanoparticle-based detection method more sensitive and reliable than traditional approaches like enzyme-linked immunos
This study introduces a dual-mode biosensor specifically designed for the quantitative detection of viruses in rapid analysis. The biosensor is unique in its use of both optical (fluorescence) and electrochemical (impedance) detection methods using the same nanocomposites, providing a dual confirmation system for virus (norovirus-like particles) quantification. The system is based on using two antibody-conjugated nanocomposites: CdSeS quantum dots and Au-N,S-GQD nanocomposites.
View Article and Find Full Text PDFPSS functionalized and stabilized carbon nanodots for specific sensing of iron in biological medium.
Spectrochim Acta A Mol Biomol Spectrosc
May 2023
Carbon Quantum Dots (CQDs) are already emerged as an excellent sensing element for its exceptional behavior in fluorescence, biocompatibility, and water dispersibility. However, its poor stability, selectivity and reproducibility in complex medium still be a big problem for its practical application. To overcome this, in the work, we have developed a new type of carbon quantum dot-PSS fluorescent nanocomposites which has been used for specific Fe detection.
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