| Autor: |
Antonio Alessio Leonardi, Emanuele Luigi Sciuto, Maria José Lo Faro, Barbara Fazio, Maria Giovanna Rizzo, Giovanna Calabrese, Luca Francioso, Rosaria Picca, Francesco Nastasi, Giuseppe Mancuso, Corrado Spinella, Wolfgang Knoll, Alessia Irrera, Sabrina Conoci |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Nano Select, Vol 4, Iss 2, Pp 160-169 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2688-4011 |
| DOI: |
10.1002/nano.202200188 |
| Popis: |
Abstract The recent SARS‐CoV‐2 pandemic has highlighted the urgent need for novel point‐of‐care devices to be promptly used for a rapid and reliable large screening analysis of several biomarkers like genetic sequences and antibodies. Currently, one of the main limitations of rapid tests is the high percentage of false negatives in the presence of variants and, in particular for the Omicron one. We demonstrate in this work the detection of SARS‐CoV‐2 and the Omicron variant with a cost‐effective silicon nanosensor enabling high sensitivity, selectivity, and fast response. We have shown that a silicon (Si) nanowires (NW) platform detects both Sars‐CoV‐2 and its Omicron variant with a limit of detection (LoD) of four effective copies (cps), without any amplification of the genome, and with high selectivity. This ultrasensitive detection of 4 cps allows to obtain an extremely early diagnosis paving the way for efficient and widespread tracking. The sensor is made with industrially compatible techniques, which in perspective may allow easy and cost‐effective industrialization. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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