2021
DOI: 10.1016/j.bios.2020.112685
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One-step rapid quantification of SARS-CoV-2 virus particles via low-cost nanoplasmonic sensors in generic microplate reader and point-of-care device

Abstract: The spread of SARS-CoV-2 virus in the ongoing global pandemic has led to infections of millions of people and losses of many lives. The rapid, accurate and convenient SARS-CoV-2 virus detection is crucial for controlling and stopping the pandemic. Diagnosis of patients in the early stage infection are so far limited to viral nucleic acid or antigen detection in human nasopharyngeal swab or saliva samples. Here we developed a method for rapid and direct optical measurement of SARS-CoV-2 virus particles in one s… Show more

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Cited by 193 publications
(170 citation statements)
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“…Although they may present future use as point-of-care diagnostics, further work still needs to be done in order to miniaturize and lower the cost of these biosensors. Currently, optical, electrochemical, and molecularly imprinted biosensors are being designed for the detection of COVID-19 [143][144][145][146][147][148][149], as seen in Table 1:…”
Section: Severe Acute Respiratory Syndrome Coronavirus 2 Biosensorsmentioning
confidence: 99%
“…Although they may present future use as point-of-care diagnostics, further work still needs to be done in order to miniaturize and lower the cost of these biosensors. Currently, optical, electrochemical, and molecularly imprinted biosensors are being designed for the detection of COVID-19 [143][144][145][146][147][148][149], as seen in Table 1:…”
Section: Severe Acute Respiratory Syndrome Coronavirus 2 Biosensorsmentioning
confidence: 99%
“…The as proposed SERS-LFIA biosensor showed a detection limit of 800 times higher than Au NPs based LFIA. The direct detection of S protein has been achieved by using nanoplasmonic resonance sensors with a detection limit of 370 vp/mL in 15 min [ 80 ]. The assay was very economical showing good performance under clinical environment.…”
Section: Biosensing Techniques For Sars-cov-2 Detementioning
confidence: 99%
“… Biosensor Pathogen Detection target Limit of detection Linear range Ref. EC SARS-CoV-2 S or N protein 19 ng/mL and 8 ng/mL - [ 103 ] EC SARS-CoV-2 Antibodies - - [ 101 ] EC SARS-CoV-2 N-gene 6.9 copies/μL 585.4 to 5.854 × 10 7 copies/μL [ 99 ] Cell-based SARS-CoV-2 Antigen 1 fgmL 1- 10 fg and 1 μg mL 1- [ 105 ] Optofluidic SARS-CoV-2 Antibody 0.5 pM 1- [ 83 ] Nanoplasmonic SARS-CoV-2 Virus particles 370 vp/mL 0 to 10 7 vp/mL [ 80 ] SPR SARS-CoV-2 Antibody 1.02 pM 2-1000 pM [ 82 ] LSPR SARS-CoV-2 RNA 1 pM 1 nM to 1 μM [ 106 ] Lateral flow optical/chemiluminescence SARS-CoV-2 Serum IgA - - [ 78 ] SERS-LFIA SARS-CoV-2 Antibody 1.28×10 7 -fold dilution - [ 79 ] Lateral flow SARS-CoV-2 RNA 12 copies...…”
Section: Biosensing Techniques For Sars-cov-2 Detementioning
confidence: 99%
“…For dissolving the immunoreagents, both bovine serum albumin (BSA) and a phosphate buffer solution (PBS) were used. To enhance the binding of biomarkers to the sensor surface, functionalize [47], b naked-eye detection of SARS-CoV-2 by ASO capped gold nanoparticles [49], c PRAM-based AC + DC immunoassay [54] AuNPs were dispersed on the biosensor's surface. The ultratight field confinement of toroidal metasensor makes it possible to achieve high sensitivity like the LSPR biosensors.…”
Section: Plasmonic Biosensorsmentioning
confidence: 99%