12 Trends and Innovations in Biosensors for COVID-19 …
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be passed on to humans, civets or ferrets used maybe pass straight or through some
medium of the host [34, 35].
Another prominent method to know the spike protein nature of COVID-2-19,
within the human host the cleavage site could have evolved, maybe through limited
undetected circulation before the start of the epidemic in the human population. The
researchers also research and found that the corona virus-2 cleavage site resembles
the same to the strains of bird flu cleavage sites, it can be easily transmitted among
one human to another human. Corona virus-2 could have evolved such a deadly
cleavage site in human cells and soon it will vanish the ongoing epidemic, as the
coronavirus could have become far more capable of spreading between humans [36].
12.5.2 Detection of Coronavirus in Air
RT-PCR a molecular method is mainly used for most of the laboratories or laboratory
works, to find how the virus spreads in respiratory organs? It is a most familiar method
and used to find even micro count presence of viruses and apart from this, this method
consumes more time, easily detectable, and no error-prone [37, 38]. Jing Wang and
his group from Materials Science and Technology, the Swiss Federal Laboratory
had developed another testing methodology in the new kind of biosensor, where two
different effects connected to find the tiny virus in a short time safely and more
accurately: i.e., through an optical and thermal biosensor technique [39].
The researchers explained that this sensor consists of a glass substrate with a very
small structure of gold, basically named as gold nanoislands. On elaborating they
produced artificial receptors of DNA that coincides exactly with the sequences of the
COVID-2 RNA which is mounted on the nanoislands. Alternatively, this COVID is
also known as RNA virus: Generally, this coronavirus has not to consist of a doublestrand DNA genome as in surviving organisms, but of an RNA single strand genome
as in living organisms. According to the researchers, the receptors on the sensor
acting as a unique RNA sequence are therefore the complementary sequences to the
microorganism, which can find the virus in less time [40, 41].
The technology used by the researchers for the detection purpose is termed to be
localized surface plasmon resonance (LSPR). This is based on the principle of optical
biosensor principle that takes place in nanostructures made by metallic: Suppose if
the virus starts to react, it activates the striking light in a particular range of wavelength
and forms a plasmonic near-field on all sides of the nanostructure. The molecules
present in the exciting plasmonic near-field changes, the local refractive index bind
over the surface they noticed. An optical sensor situated at the backside of the device
could be helpful to calculate the change and it could find/say neither the sample
contains the RNA strands nor not [42, 43].
SARS-Corona virus and SARS-COVID2, the two deadly viruses vary only a bit
in their RNA strand apart from that there is no difference. “Tests showed that the
sensor can clearly distinguish between the very similar RNA sequences of the two
viruses.” By using this biosensor we have no need to wait for a long time to get
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be passed on to humans, civets or ferrets used maybe pass straight or through some
medium of the host [34, 35].
Another prominent method to know the spike protein nature of COVID-2-19,
within the human host the cleavage site could have evolved, maybe through limited
undetected circulation before the start of the epidemic in the human population. The
researchers also research and found that the corona virus-2 cleavage site resembles
the same to the strains of bird flu cleavage sites, it can be easily transmitted among
one human to another human. Corona virus-2 could have evolved such a deadly
cleavage site in human cells and soon it will vanish the ongoing epidemic, as the
coronavirus could have become far more capable of spreading between humans [36].
12.5.2 Detection of Coronavirus in Air
RT-PCR a molecular method is mainly used for most of the laboratories or laboratory
works, to find how the virus spreads in respiratory organs? It is a most familiar method
and used to find even micro count presence of viruses and apart from this, this method
consumes more time, easily detectable, and no error-prone [37, 38]. Jing Wang and
his group from Materials Science and Technology, the Swiss Federal Laboratory
had developed another testing methodology in the new kind of biosensor, where two
different effects connected to find the tiny virus in a short time safely and more
accurately: i.e., through an optical and thermal biosensor technique [39].
The researchers explained that this sensor consists of a glass substrate with a very
small structure of gold, basically named as gold nanoislands. On elaborating they
produced artificial receptors of DNA that coincides exactly with the sequences of the
COVID-2 RNA which is mounted on the nanoislands. Alternatively, this COVID is
also known as RNA virus: Generally, this coronavirus has not to consist of a doublestrand DNA genome as in surviving organisms, but of an RNA single strand genome
as in living organisms. According to the researchers, the receptors on the sensor
acting as a unique RNA sequence are therefore the complementary sequences to the
microorganism, which can find the virus in less time [40, 41].
The technology used by the researchers for the detection purpose is termed to be
localized surface plasmon resonance (LSPR). This is based on the principle of optical
biosensor principle that takes place in nanostructures made by metallic: Suppose if
the virus starts to react, it activates the striking light in a particular range of wavelength
and forms a plasmonic near-field on all sides of the nanostructure. The molecules
present in the exciting plasmonic near-field changes, the local refractive index bind
over the surface they noticed. An optical sensor situated at the backside of the device
could be helpful to calculate the change and it could find/say neither the sample
contains the RNA strands nor not [42, 43].
SARS-Corona virus and SARS-COVID2, the two deadly viruses vary only a bit
in their RNA strand apart from that there is no difference. “Tests showed that the
sensor can clearly distinguish between the very similar RNA sequences of the two
viruses.” By using this biosensor we have no need to wait for a long time to get