A new publication by RISE (Research Institutes of Sweden) researchers within the Digital Cellulose Center has been released online in the journal npj Flexible Electronics. The report outlines how to create an electrically conducting material from a wood-based ink. The ink is environmentally friendly and sustainable being composed of lignin and cellulose from wood and dissolved in water. After the ink is deposited via screen-printing a laser is used to carbonize the ink into electrically conductive carbon that can be incorporated into functional components such as a humidity sensor. The article can be found here: https://www.nature.com/articles/s41528-020-0080-2
Researchers from Linkoping University and RISE Acreo have collaborated on a project to produce greyscale and paper displays using conductive polymers and a UV-patterning technique. The displays rely on the electrochromic properties of the materials meaning the display will change with the onset of an applied voltage. The authors use a vapor synthesis technique and photomasks to embed images into conductive polymers which appear and disappear upon activation of the display. The researchers use this phenomenon to produce dual image electrochromic displays. Finally, a proof of concept paper display was presented, hinting at the future of this technology. The manuscript was funded partially by the Digital Cellulose Center project under Theme 4. The manuscript features on the cover of the Polymers journal and can be found at the following link: https://www.mdpi.com/2073-4360/11/2/267
The Digital Cellulose Center (DCC) is one of eight new competence centers recently supported by VINNOVA. RISE Acreo, LiU, RISE Bioeconomy and KTH together with ten corporations will conduct world-class research in the center in an area vital to Swedens future competitiveness. RISE Acreo is the main applicant and will co-ordinate the DCC. In the VINNOVA competence center programme, universities, research institutes, corporations and public agencies will collaborate on research in an area vital to Swedens future competitiveness. The investment is part of the strategic partnership program initiative run by the the Swedish government. RISE Acreo is the main applicant and will act as co-ordinator for the Digital Cellulose Center, established together with RISE Bioeconomy (former Innventia), Linköping university (Campus Norrköping), KTH Royal Institute for Technology and a number of different corporations. The purpose of the DCC is to make cellulose based products an integrated part of the digital society. The DCC is granted 36 MSEK from VINNOVA until the 2022 when an evaluation will take place to determine if the center will be funded for another five years. The VINNOVA funding will be matched by the academic partners and corporations, making the total funding for the project 108 MSEK for the first five years.