We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us

Download Mobile App





Low-Cost System Detects SARS-CoV-2 Virus in Hospital Air Using High-Tech Bubbles

By HospiMedica International staff writers
Posted on 04 Nov 2022
Print article
Image: Coronavirus-detecting micelles being transferred from one test tube to another (Photo courtesy of PNNL)
Image: Coronavirus-detecting micelles being transferred from one test tube to another (Photo courtesy of PNNL)

Scientists have shown that they can detect SARS-CoV-2, the virus that causes COVID-19, in the air by using a nanotechnology-packed bubble that spills its chemical contents like a broken piñata when encountering the virus. Such a detector could be positioned on a wall or ceiling, or in an air duct, where there’s constant air movement, to alert occupants immediately when even a trace level of the virus is present. The heart of the nanotechnology is a micelle, a molecular structure composed of oils, fats and sometimes water with inner space that can be filled with air or another substance. Micelles are often used to deliver anticancer drugs in the body and are a staple in soaps and detergents. Almost everyone has encountered a micelle in the form of soap bubbles.

A team of scientists at the Pacific Northwest National Laboratory (PNNL, Richland, WA, USA) created a new kind of micelle, one that is stamped on the surface with copies of an imprinted particle for SARS-CoV-2. The team filled micelles with a salt capable of creating an electronic signal but that is quiescent when packed inside a micelle. When a viral particle interacts with one of the imprinted receptors on the surface, the micelle pops open, spilling the salt and sending out an electronic signal instantly. The system acts like a signal magnifier, translating the presence of one viral particle into 10 billion molecules that together create a detectable signal. The developers say that the detector has advantages over today’s technologies; it produces a signal faster, requires a much lower level of viral particles, or produces fewer errors.

PNNL’s micelle technology is the product of an arduous chain of 279 separate chemical steps developed by the team. The researchers estimate that the technology can pluck one viral particle out of billions of other particles. The detector is so sensitive that the team had a challenging time identifying the lower limit. The team used both inactivated SARS-CoV-2 viral particles and the virus’s spike protein in its tests. While the technology detects the virus within a millisecond, the device takes an additional minute to run quality-control software to confirm the signal and prevent false alarms.

“There is a need for this kind of low-cost detection system,” said PNNL scientist Lance Hubbard, a nanotechnology specialist and an author of the paper. “Perhaps it could be implemented in schools, or in hospitals or emergency rooms before patients have been fully assessed - anywhere you need to know immediately that the virus is present.”

Related Links:
PNNL

Gold Member
STI Test
Vivalytic Sexually Transmitted Infection (STI) Array
Gold Member
Disposable Protective Suit For Medical Use
Disposable Protective Suit For Medical Use
Silver Member
Compact 14-Day Uninterrupted Holter ECG
NR-314P
New
Drill Surgical Power Tool
MCI-280

Print article

Channels

Critical Care

view channel
Image: Researchers have developed a novel risk score for cardiovascular complications after bone marrow transplant (Photo courtesy of 123RF)

Novel Tool Predicts Cardiovascular Risks after Bone Marrow Transplantation

Every year, thousands of people undergo bone marrow transplants to potentially cure serious diseases like leukemia, lymphoma, and immune deficiency disorders. While these transplants can be lifesaving,... Read more

Surgical Techniques

view channel
Image: The Early Bird Bleed Monitoring System provides visual and audible indicators of the onset and progression of bleeding events (Photo courtesy of Saranas)

Novel Technology Monitors and Lowers Bleeding Complications in Patients Undergoing Heart Procedures

Bleeding complications at the femoral access site can significantly hamper recovery, affecting the success of procedures, patient satisfaction, and overall healthcare costs. It is crucial for surgeons... Read more

Patient Care

view channel
Image: The newly-launched solution can transform operating room scheduling and boost utilization rates (Photo courtesy of Fujitsu)

Surgical Capacity Optimization Solution Helps Hospitals Boost OR Utilization

An innovative solution has the capability to transform surgical capacity utilization by targeting the root cause of surgical block time inefficiencies. Fujitsu Limited’s (Tokyo, Japan) Surgical Capacity... Read more

Health IT

view channel
Image: First ever institution-specific model provides significant performance advantage over current population-derived models (Photo courtesy of Mount Sinai)

Machine Learning Model Improves Mortality Risk Prediction for Cardiac Surgery Patients

Machine learning algorithms have been deployed to create predictive models in various medical fields, with some demonstrating improved outcomes compared to their standard-of-care counterparts.... Read more

Point of Care

view channel
Image: The new eye-safe laser technology can diagnose traumatic brain injury (Photo courtesy of 123RF)

Novel Diagnostic Hand-Held Device Detects Known Biomarkers for Traumatic Brain Injury

The growing need for prompt and efficient diagnosis of traumatic brain injury (TBI), a major cause of mortality globally, has spurred the development of innovative diagnostic technologies.... Read more
Copyright © 2000-2024 Globetech Media. All rights reserved.