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On-Site Detection of SARS-CoV-2 Antigen by Deep Learning-Based Surface-Enhanced Raman Spectroscopy and Its Biochemical Foundations.

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TLDR
In this article, a deep learning-based surface-enhanced Raman spectroscopy technique was developed for the sensitive, rapid, and on-site detection of the SARS-CoV-2 antigen in the throat swabs or sputum from 30 confirmed COVID-19 patients.
Abstract
A rapid, on-site, and accurate SARS-CoV-2 detection method is crucial for the prevention and control of the COVID-19 epidemic. However, such an ideal screening technology has not yet been developed for the diagnosis of SARS-CoV-2. Here, we have developed a deep learning-based surface-enhanced Raman spectroscopy technique for the sensitive, rapid, and on-site detection of the SARS-CoV-2 antigen in the throat swabs or sputum from 30 confirmed COVID-19 patients. A Raman database based on the spike protein of SARS-CoV-2 was established from experiments and theoretical calculations. The corresponding biochemical foundation for this method is also discussed. The deep learning model could predict the SARS-CoV-2 antigen with an identification accuracy of 87.7%. These results suggested that this method has great potential for the diagnosis, monitoring, and control of SARS-CoV-2 worldwide.

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Journal ArticleDOI

Integrated System for On-Site Rapid and Safe Screening of COVID-19

TL;DR: An integrated system, which incorporates a machine-learning-based Fourier transform infrared spectroscopy technique for rapid COVID-19 screening and air-plasma-based disinfection modules to prevent potential secondary infections, is established.
Journal ArticleDOI

Counter-propagating Gaussian beam enhanced Raman spectroscopy for rapid reagentless detection of respiratory pathogens in nasal swab samples

TL;DR: In this article , a point-of-need Raman spectroscopy-based platform is described for rapid detection of multiple respiratory pathogens in nasal swab samples with high sensitivity and specificity.
Journal ArticleDOI

Spectroscopic Methods for the Detection of Microbial Pathogens and Diagnostics of Infectious Diseases—An Updated Overview

TL;DR: In this paper , the authors reviewed the most reliable tools that are prerequisites for the rapid detection of microbes and discussed the remarkable roles of surface-enhanced Raman scattering, Fourier transform infrared, electrochemical impedance, near-infrared, and MALDI-TOF/TOF in the identification and characterization of pathogenic microbes.
Journal ArticleDOI

Recent development of surface-enhanced Raman scattering for biosensing

TL;DR: In this paper , the challenges and perspectives of SERS biosensing in the future are presented, and the important strategies (extending from nanomaterials with tunable shapes and nanostructures to surface bio-functionalization by modifying affinity groups or specific biomolecules) for improving SERS sensing performance are comprehensively discussed.
Journal ArticleDOI

Label-Free Saliva Test for Rapid Detection of Coronavirus Using Nanosensor-Enabled SERS

TL;DR: In this article , a surface-enhanced Raman scattering (SERS) based test was designed to rapidly diagnose SARS-CoV-2 from saliva, which significantly increased the detection specificity and sensitivity.
References
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Ab Initio Calculation of Vibrational Absorption and Circular Dichroism Spectra Using Density Functional Force Fields

TL;DR: In this article, the unpolarized absorption and circular dichroism spectra of the fundamental vibrational transitions of the chiral molecule, 4-methyl-2-oxetanone, are calculated ab initio using DFT, MP2, and SCF methodologies and a 5S4P2D/3S2P (TZ2P) basis set.
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Controlled nucleation for the regulation of the particle size in monodisperse gold suspensions

G. Frens
- 01 Jan 1973 - 
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