According to the study, the motion of the ions can be monitored by the current they generate, and when a viral particle enters a nanopore, it blocks some of the ions from passing through, leading to a transient dip in current.(Reuters image)
According to the study, the motion of the ions can be monitored by the current they generate, and when a viral particle enters a nanopore, it blocks some of the ions from passing through, leading to a transient dip in current.(Reuters image)

Scientists develop method that may lead to more accurate, fast Covid-19 test

The study describing the new method has been published in the journal ACS Sensors.
By hindustantimes.com | Edited by Prashasti Singh | Hindustan Times, New Delhi
UPDATED ON NOV 29, 2020 09:22 AM IST

Scientists have used nanopores (extremely small pores) and electric current to devise a new method to identify viruses. The method will be a breakthrough in new, fast and accurate tests for the coronavirus disease (Covid-19), they claimed.

The study describing the new method has been published in the journal ACS Sensors.

Also Read: Scientists try to break down why some people develop Covid-19 as life-threatening disease while others remain asymptomatic

The study demonstrated a new system for identifying single virus particles using an algorithm trained to detect changes in the current passing across silicon nanopores, according to news agency PTI. The team of scientists include those from Osaka University in Japan, it further reported.

The scientists used a layer of the compound silicon nitride - just 50 nanometres thick - with nanopores added, for the study. The layer was suspended on a silicon wafer and when a voltage difference was applied to the solution on either side of the wafer, ions travel through the nanopores in a process called electrophoresis.

According to the study, the motion of the ions can be monitored by the current they generate, and when a viral particle enters a nanopore, it blocks some of the ions from passing through, leading to a transient dip in current. Each dip reflects the physical properties of the particle, such as volume, surface charge, and shape, the scientists said, adding that the method can be used to identify the kind of virus.

Click here for full Covid-19 coverage

The research team combined single-particle nanopore sensing with artificial intelligence to determine the identity of new samples and were able to achieve highly accurate identification of multiple viral species, PTI quoted senior author of the study, Makusu Tsutsui. Coronaviruses, due to their spiky outer proteins, are especially well suited for this technique, researchers said.

“This work will help with the development of a virus test kit that outperforms conventional viral inspection methods,” said Tomoji Kawai, another co-author of the study.

(with PTI inputs)

SHARE THIS ARTICLE ON
app
Close
Tableau of Ladakh during the Republic Day parade at Rajpath on Tuesday. (Ajay Aggarwal /HT PHOTO)
Tableau of Ladakh during the Republic Day parade at Rajpath on Tuesday. (Ajay Aggarwal /HT PHOTO)

Smaller crowd, masks mark Republic Day celebrations

By Kainat Sarfaraz, Hindustan Times, New Delhi
PUBLISHED ON JAN 27, 2021 04:15 AM IST
  • While more than 100,000 people attended the parade during the previous years, with Covid-19 norms in place on Tuesday, the crowd was limited to 25,000.
Close
Haryana farmers welcome farmers of Punjab moving towards Delhi to take part in their Jan 26 tractor rally, as part of the ongoing agitation against farm reform laws, at Shambu Punjab-Haryana border near Patiala. (PTI Photo)
Haryana farmers welcome farmers of Punjab moving towards Delhi to take part in their Jan 26 tractor rally, as part of the ongoing agitation against farm reform laws, at Shambu Punjab-Haryana border near Patiala. (PTI Photo)

Leaders condemn violence, Opposition seeks repeal of laws

By HT Correspondent, Hindustan Times, New Delhi
PUBLISHED ON JAN 27, 2021 04:12 AM IST
  • The Opposition, including the Congress, alleges that the government rushed the farm laws without proper discussion in Parliament. The Centre, however, says the reforms will lead to new opportunities in agriculture trade.
Close
Men work near the Parliament in New Delhi. (AFP)
Men work near the Parliament in New Delhi. (AFP)

House canteen dishes out new menu, hikes prices

By Saubhadra Chatterji, Hindustan Times, New Delhi
PUBLISHED ON JAN 27, 2021 03:55 AM IST
  • The parliament canteen, now run by ITDC will offer as many as 58 items, both vegetarian and non-vegetarian, from January 27.
Close
Union minister for culture and tourism Prahlad Patel (Sonu Mehta/ Hindustan Times)
Union minister for culture and tourism Prahlad Patel (Sonu Mehta/ Hindustan Times)

Discussing a possible route for Amarnath via Kargil: Prahlad Patel

By Deeksha Bhardwaj, Hindustan Times, New Delhi
PUBLISHED ON JAN 27, 2021 03:30 AM IST
  • Union minister for culture and tourism Prahlad Patel said government is addressing the lack of adventure sports equipment in Kargil.
Close
People gather before taking part in a tractor rally to protest against farm laws in Bengaluru(Reuters)
People gather before taking part in a tractor rally to protest against farm laws in Bengaluru(Reuters)

Rally to langar: Peaceful stir held across 20 states

By HT Correspondent, Hindustan Times, New Delhi
PUBLISHED ON JAN 27, 2021 03:10 AM IST
  • In contrast to the violence seen in the Capital, farmers held peaceful rallies across the country to protest against the farm laws.
Close
Indian Air Force's fighter jets during the Republic Day parade, at Rajpath, in New Delhi(Ajay Aggarwal/Hindustan Times)
Indian Air Force's fighter jets during the Republic Day parade, at Rajpath, in New Delhi(Ajay Aggarwal/Hindustan Times)

At Rajpath, many firsts in the shadow of a pandemic

By HT Correspondent, Hindustan Times, New Delhi
UPDATED ON JAN 27, 2021 01:05 AM IST
  • India put on display its war machines at a time when the country is locked in a tense border stand-off with China.
Close
The ultimate blame has to lie with the farmers, and their leaders, who are now saying how certain unions did not agree with the plans for the tractor rally decided mutually with Delhi Police and took matters into their own hands.(AP Photo)
The ultimate blame has to lie with the farmers, and their leaders, who are now saying how certain unions did not agree with the plans for the tractor rally decided mutually with Delhi Police and took matters into their own hands.(AP Photo)

Farmers' tractor rally: Dark day for the Republic

By HT Correspondent, Hindustan Times, New Delhi
UPDATED ON JAN 27, 2021 12:59 AM IST
A deadly charge of tractors at ITO, clashes with police at Red Fort: Rampage in the Capital as farm rally descends into unprecedented chaos, disorder and violence
Close
A protester charges a security personnel during clashes at the Red Fort following farmers' tractor parade on Republic Day, in New Delhi(PTI)
A protester charges a security personnel during clashes at the Red Fort following farmers' tractor parade on Republic Day, in New Delhi(PTI)

Union leaders make appeal, divert blame after anarchy reigns

By Zia Haq, Hindustan Times, New Delhi
PUBLISHED ON JAN 27, 2021 12:27 AM IST
  • The chaos and violence have raised questions about the future of the two-month-long agitation of farm unions.
Close
"Let me wish everyone in India, as well as those celebrating here in Britain, a very Happy Republic Day," PM Johnson said.(Screenshot. Twitter/@UKinIndia)
"Let me wish everyone in India, as well as those celebrating here in Britain, a very Happy Republic Day," PM Johnson said.(Screenshot. Twitter/@UKinIndia)

Macron, Johnson and Morrison send video messages on Republic Day

By HT Correspondent, New Delhi
UPDATED ON JAN 27, 2021 12:02 AM IST
  • Bangladesh Prime Minister Sheikh Hasina, in a letter sent to her Indian counterpart, conveyed her greetings.
Close
Women passengers will not be checked for identity cards while others travelling in Mumbai local trains will require QR code as usual.(PTI)
Women passengers will not be checked for identity cards while others travelling in Mumbai local trains will require QR code as usual.(PTI)

Western Railway to start all suburban services in Mumbai from Jan 29

By Aroosa Ahmed
UPDATED ON JAN 27, 2021 12:13 AM IST
  • Tuesday's decision to operate all trains comes a day after a meeting to resume local train services for all passengers was chaired by Maharashtra chief minister Uddhav Thackeray.
Close
Haryana chief minister Manohar Lal Khattar. (File photo)
Haryana chief minister Manohar Lal Khattar. (File photo)

'Farmer organisations not in control of agitation now': Haryana CM

By HT Correspondent, Chandigarh
UPDATED ON JAN 26, 2021 11:56 PM IST
  • Khattar said that unsavoury events on Tuesday deserved to be condemned in the strongest words.
Close
New Delhi: Police fire teargas shells to disperse protesting farmers who were attempting to break barricades at Ghazipur border during their 'tractor march' on Republic Day, in New Delhi, Tuesday, Jan. 26, 2021. (PTI Photo/Ravi Choudhary)(PTI01_26_2021_000463B)(PTI)
New Delhi: Police fire teargas shells to disperse protesting farmers who were attempting to break barricades at Ghazipur border during their 'tractor march' on Republic Day, in New Delhi, Tuesday, Jan. 26, 2021. (PTI Photo/Ravi Choudhary)(PTI01_26_2021_000463B)(PTI)

Letter to CJI urges him to take cognizance of violence during tractor rally 

PTI
PUBLISHED ON JAN 26, 2021 11:16 PM IST
Letter to CJI urges him to take cognizance of violence during farmers' tractor rally
Close
Reiterating India's stance for a "just and comprehensive solution to the Israel-Palestine conflict", Tirumurti said that India supports "President Mahmoud Abbas' call to hold an international peace conference.(PTI )
Reiterating India's stance for a "just and comprehensive solution to the Israel-Palestine conflict", Tirumurti said that India supports "President Mahmoud Abbas' call to hold an international peace conference.(PTI )

UNSC: India welcomes elections in Palestine, calls for free, fair polls

ANI, New York
PUBLISHED ON JAN 26, 2021 11:00 PM IST
TS Tirumurti, India's Permanent Representative, lauded the peaceful efforts to "two-State solution, through direct negotiations between the two parties" in the UNSC.
Close
Nagaland Governor RN Ravi (fifth from right) takes the salute at the fag hoisting on Republic Day in Kohima(HT PHOTO)
Nagaland Governor RN Ravi (fifth from right) takes the salute at the fag hoisting on Republic Day in Kohima(HT PHOTO)

Nagaland Governor puts NSCN in line of fire in Republic Day speech

By Alice Yhoshü
PUBLISHED ON JAN 26, 2021 10:46 PM IST
  • Governor RN Ravi said 'politics by gun' has stonewalled efforts to resolve the Naga political issue.
Close
A protesting farmer waves an Indian flag and a farmer union flag as he marches with others to the capital breaking police barricades during Republic Day celebrations in New Delhi.(AP)
A protesting farmer waves an Indian flag and a farmer union flag as he marches with others to the capital breaking police barricades during Republic Day celebrations in New Delhi.(AP)

BJP leaders meet to discuss violence in Delhi, farmers' agitation

By Smriti Kak Ramachandran, New Delhi
UPDATED ON JAN 26, 2021 11:24 PM IST
  • No details were shared about the meeting, although a functionary said the party sees similarities in Tuesday’s protests with last year's anti-CAA agitation.
Close
SHARE
Story Saved
OPEN APP