Monday May 28, 2018
Home Indian Diaspora New imaging s...

New imaging system with ‘loose fibres’ developed

0
//
73
Republish
Reprint

Washington: A team of researchers from MIT which included an India-origin scientist developed a new imaging system that consists bundle of optical fibres and it does not have a need for lenses or a protective housing.

For medical applications, where the diameter of the bundle — and thus the number of fibers — needs to be low, the quality of the image could be improved through the use of interferometric methods.

The fibres are connected to an array of photosensors at one end and the other ends can be left to wave free so they could pass individually through micrometer-scale gaps in a porous membrane, to image whatever is on the other side.

Bundles of the fibres can be fed through pipes and immersed in fluids – to image oil fields, aquifers or plumbing without risking damage to watertight housings.

And tight bundles of the fibres could yield endoscopes with narrower diametres since they would require no additional electronics.

“Previous works have used time of flight to extract depth information. But in this work, I was proposing to use time of flight to enable a new interface for imaging,” explained Barmak Heshmat, a postdoc at MIT Media Lab.

Heshmat is the first author on the paper, joined by associate professor of media arts and sciences Ramesh Raskar and Ik Hyun Lee, a fellow postdoc.

The researchers reported the results in the journal Nature Scientific Reports.(IANS)

Click here for reuse options!
Copyright 2016 NewsGram

Next Story

A One-Shot Nanoparticle Vaccine for Polio is Developed by MIT scientists

A novel single-shot nanoparticle vaccine developed by MIT researchers could assist efforts to eradicate polio worldwide. Currently, two to four polio vaccine injections are required to build up immunity, and because of the difficulty in reaching children in remote areas, the disease still prevails.

0
//
19
vaccine, wikimedia

A novel single-shot nanoparticle vaccine developed by MIT researchers could assist efforts to eradicate polio worldwide.

Currently, two to four polio vaccine injections are required to build up immunity, and because of the difficulty in reaching children in remote areas, the disease still prevails.

The novel vaccine delivers multiple doses in just one injection to prevent the paralysis caused by the polio virus.

“Having a one-shot vaccine that can elicit full protection could be very valuable in being able to achieve eradication,” said Ana Jaklenec, a research scientist at MIT’s Koch Institute for Integrative Cancer Research in Cambridge, US.

“Children in some of these hard-to-reach developing world locations tend to not get the full series of shots necessary for protection. The goal is to ensure that everyone globally is immunized,” Jaklenec added, in a paper appearing in the journal Proceedings of the National Academy of Sciences.

To create a single-injection vaccine, the team encapsulated the inactivated polio vaccine in a biodegradable polymer known as PLGA.

polio
An Afghan child looks on as a health worker administers polio vaccine .

This polymer can be designed to degrade after a certain period of time, allowing the researchers to control when the vaccine is released.

The researchers designed particles that would deliver an initial burst at the time of injection, followed by a second release about 25 days later.

They injected the particles into rats, and found that the blood samples from rats immunised with the single-injection particle vaccine had an antibody response against polio virus just as strong as, or stronger than, antibodies from rats that received two injections of Salk polio vaccine — the first polio vaccine, developed in the 1950s.

Furthermore, the researchers said that they could design vaccines that deliver more than two doses, each a month apart and hope to soon be able to test the vaccines in clinical trials.

Also Read: Parents More Worried About the Vaccines Rather Than the Disease

They are also working to apply this approach to create stable, single-injection vaccines for other viruses such as Ebola and HIV. (IANS)

Next Story