Magnetic Cellulose

The unique material is a composite of nanocellulose and magnetic nanoparticles. The magnetic nanoparticles are evenly distributed onto the cellulose nanofibrils and produced in an inexpensive single-step process. The material combines the mechanical properties and biocompatibility of nanocellulose with the enhanced characteristics of magnetic nanoparticles. Films of the material are stable in water, have a high tensile strength, high surface area and magnetic properties that can be tailored. 

​Possible applications
 - Loudspeakers
 - Water purification
 - Medical diagnostics and treatments 
 - Catalysis 
 - Biomedical imaging
 - Data storage
 - Electrical and electromechanical devices 

Ultra-thin Loudspeakers

WWSC researchers Richard Olsson and Lars Berglund have used magnetic  nanoparticles on nanocellulose to make ultra-thin loudspeakers, only 50 µm thick. Today, the sound needs to be increased by an amplifier, but the sound quality is impressive and very well defined. Work is now being done to increase the audio signals while still keeping the frequency range.

Listen to audio record:

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