Connect with us


Ultrasound and magnetism move drug delivery nanobeads upstream




Various groups are already working on it Nanoparticles Although it can be used for directional drug delivery through the bloodstream, most of these particles are designed to “go along the flow.” But now, Swiss researchers have actually created something that can be moved upstream.

The new nanoparticles developed at the ETH Zurich Institute are actually small magnetic beads that combine iron oxide and a polymer. They may also be carrying medications that probably had to be delivered to specific locations in the body. The width of each bead is only 3 micrometers.

In laboratory tests, the beads were placed in a liquid flowing through a glass tube with an inner diameter of 150-300 micrometers (approximately the width of a blood vessel). When exposed to an externally applied magnetic field, the beads gathered in a “flock” about 15-40 micrometers wide.

The swarm was then moved towards one wall of the tube using a directed pulse of ultrasound.By switching after that rotation The magnetic field allowed scientists to push the herd along the length of the tube in the opposite direction of the liquid flow.

Diagram showing how a swarm of nanobeads (red) can travel upstream by moving to the walls of the tube.
Diagram showing how a swarm of nanobeads (red) can travel upstream by moving to the walls of the tube.

Ahmed et al. Nature Machine Intelligence 2021

It was effective to lean the swarm against the wall of the tube, as the friction between the liquid and the glass weakens the current. Canoeers rowing upstream of the river use a similar trick in that the water stays near the slow-moving coastline.

Scientists are now planning to see how this technology works in the blood vessels of real animals. The beads are expected to ultimately be used not only for targeted drug delivery, but also for microsurgery procedures such as clearing obstructed blood vessels.

“Our method is ideal for controlling microvehicles in the body because both ultrasound and magnetic fields penetrate body tissue,” said Professor Daniel Ahmed, who leads the project with Professor Bradley Nelson. I will.

Magnetic beads can be seen in the upstream action in the video below.

A research paper was recently published in a journal Nature Machine Intelligence..

Source: ETH Zurich

Swim upstream with sound waves

What Are The Main Benefits Of Comparing Car Insurance Quotes Online

LOS ANGELES, CA / ACCESSWIRE / June 24, 2020, / Compare-autoinsurance.Org has launched a new blog post that presents the main benefits of comparing multiple car insurance quotes. For more info and free online quotes, please visit https://compare-autoinsurance.Org/the-advantages-of-comparing-prices-with-car-insurance-quotes-online/ The modern society has numerous technological advantages. One important advantage is the speed at which information is sent and received. With the help of the internet, the shopping habits of many persons have drastically changed. The car insurance industry hasn't remained untouched by these changes. On the internet, drivers can compare insurance prices and find out which sellers have the best offers. View photos The advantages of comparing online car insurance quotes are the following: Online quotes can be obtained from anywhere and at any time. Unlike physical insurance agencies, websites don't have a specific schedule and they are available at any time. Drivers that have busy working schedules, can compare quotes from anywhere and at any time, even at midnight. Multiple choices. Almost all insurance providers, no matter if they are well-known brands or just local insurers, have an online presence. Online quotes will allow policyholders the chance to discover multiple insurance companies and check their prices. Drivers are no longer required to get quotes from just a few known insurance companies. Also, local and regional insurers can provide lower insurance rates for the same services. Accurate insurance estimates. Online quotes can only be accurate if the customers provide accurate and real info about their car models and driving history. Lying about past driving incidents can make the price estimates to be lower, but when dealing with an insurance company lying to them is useless. Usually, insurance companies will do research about a potential customer before granting him coverage. Online quotes can be sorted easily. Although drivers are recommended to not choose a policy just based on its price, drivers can easily sort quotes by insurance price. Using brokerage websites will allow drivers to get quotes from multiple insurers, thus making the comparison faster and easier. For additional info, money-saving tips, and free car insurance quotes, visit https://compare-autoinsurance.Org/ Compare-autoinsurance.Org is an online provider of life, home, health, and auto insurance quotes. This website is unique because it does not simply stick to one kind of insurance provider, but brings the clients the best deals from many different online insurance carriers. In this way, clients have access to offers from multiple carriers all in one place: this website. On this site, customers have access to quotes for insurance plans from various agencies, such as local or nationwide agencies, brand names insurance companies, etc. "Online quotes can easily help drivers obtain better car insurance deals. All they have to do is to complete an online form with accurate and real info, then compare prices", said Russell Rabichev, Marketing Director of Internet Marketing Company. CONTACT: Company Name: Internet Marketing CompanyPerson for contact Name: Gurgu CPhone Number: (818) 359-3898Email: [email protected]izWebsite: https://compare-autoinsurance.Org/ SOURCE: Compare-autoinsurance.Org View source version on accesswire.Com:https://www.Accesswire.Com/595055/What-Are-The-Main-Benefits-Of-Comparing-Car-Insurance-Quotes-Online View photos

Pictures Credit


to request, modification Contact us at Here or [email protected]