Nanofibrillar cellulose film to ease performing medical tests

October 23, 2012
Nanofibrillar cellulose film to ease performing medical tests

Researchers at Aalto University have succeeded in developing a durable and affordable nanofibrillar cellulose film platform to support medical testing. New environmentally friendly, reliable nanofibrillar cellulose (NFC) platforms are more diverse than plastic films.

New film can be made, for instance, hydrophobic, hydrophilic and the electric charge can be changed. This will enhance the possibility of conducting thousands of different at home or in physicians' receptions instead of waiting for results from laboratories.

 A platform is coated with the new film in the factory. The film is injected with substances that will react to the tested substance. At the place of testing, blood, water or another test material will be applied on to the film. The antibтody injected onto the film will absorb the sample, depending on whether it contains substances causing , or , for example. Then the test result is visualised with the help of colour‑changing chemistry, for example.

"Thanks to the new film, various tests can be conducted faster without compromising reliability. It will now be easier to detect that cause illnesses in the physician's reception, or to monitor at home. In addition to medical diagnostics, the film can be utilised to study water purity," for example, says doctoral candidate Hannes Orelma at Aalto University.

Previous attempts to produce a nanofibrillar cellulose platform have failed when the porous plate absorbed part of the sample. Now researchers have developed a method of producing a waterproof nanofibrillar cellulose gel that will not absorb samples. They have also made great efforts to ensure sufficient film durability.

The article "Surface Functionalized Nanofibrillar Cellulose (NFC) Film as a Platform for Immunoassays and Diagnostics" was published in Biointephases journal. North Carolina State University participated in the study in addition to Aalto University.

Explore further: Industry’s First Conductive Polymer Film Touch Panels from Fujitsu

More information: www.springerlink.com/content/34221770q130577t/

Related Stories

Exxon upgrades lithium car batteries

November 29, 2007

U.S. researchers say they've developed a plastic film that will make it easier for automakers to use lithium-ion batteries in electric cars and trucks.

Brain activity revealed when watching a feature film

May 29, 2012

Human brain functions have been studied in the past using relatively simple stimuli, such as pictures of faces and isolated sounds or words. Researchers from Aalto University Department of Biomedical Engineering and Computational ...

Recommended for you

Neuromorphic computing mimics important brain feature

August 18, 2016

(Phys.org)—When you hear a sound, only some of the neurons in the auditory cortex of your brain are activated. This is because every auditory neuron is tuned to a certain range of sound, so that each neuron is more sensitive ...

'Artificial atom' created in graphene

August 22, 2016

In a tiny quantum prison, electrons behave quite differently as compared to their counterparts in free space. They can only occupy discrete energy levels, much like the electrons in an atom - for this reason, such electron ...

Picoscale precision though ultrathin film piezoelectricity

August 10, 2016

Piezoelectricity (aka the piezoelectric effect) occurs within certain materials – crystals (notably quartz), some ceramics, bone, DNA, and a number of proteins – when the application of mechanical stress or vibration ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.