By a News Reporter-Staff News Editor at Electronics Newsweekly -- Current study results on Organic Electronics have been published. According to news reporting out of Jena, Germany, by VerticalNews editors, research stated, "Digital printing technologies are promising as future manufacturing approaches due to their capabilities of highly flexible and additive material deposition on various substrates. In this contribution, all inkjet-printed piezoelectric polymer actuators are presented based on polyvinylidene fluoride trifluoroethylene (P(VDF-TrFE)) and electrodes printed from silver nanoparticle dispersions."
Our news journalists obtained a quote from the research from the University of Jena, "The target application for the actuators described here are membrane pumps for microfluidic lab-on-a-chip (LOC) systems. For the first time, all-ink-jet-printed P(VDF-TrFE) actuators are reported and the corresponding piezoelectric d(31) coefficient is measured. For manufacturing the actuators, a low-cost procedure is employed that consists of only three inkjet printing and post-processing steps where moderate thermal treatments (T-max = 130 degrees C) are combined with plasma sintering. The processing is therefore compatible with a wide range of temperature sensitive polymer substrates, completely additive and highly flexible. A sandwich-like structure of a piezoelectric P(VDF-TrFE) layer between two silver electrodes is inkjet-printed onto a polyethylene terephthalate (PET) substrate. When a voltage is applied across the piezoelectric layer, the reverse piezoelectric effect will lead to a bending deflection of this unimorph structure. The piezoelectric d(31) coefficients are found to be approximately 7 to 9 pm V-1, which allows the generation of significant actuator deflections. For the application in a micropump, flow rates of several 100 mu L min(-1) are anticipated, which is promising for LOC applications. Most current micropumps are based on actuator elements that are fabricated separately and mounted on a passive membrane."
According to the news editors, the research concluded: "By using all inkjet-printed actuators, as presented here, the joining step is avoided and the benefits of low-cost printed devices are added to the well-developed processing approaches for microfluidic chips."
For more information on this research see: All inkjet-printed piezoelectric polymer actuators: Characterization and applications for micropumps in lab-on-a-chip systems. Organic Electronics, 2013;14(12):3423-3429. Organic Electronics can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Organic Electronics - www.elsevier.com/wps/product/cws_home/620806)
Our news journalists report that additional information may be obtained by contacting O. Pabst, University of Jena, JCSM, D-07743 Jena, Germany. Additional authors for this research include J. Perelaer, E. Beckert, U.S. Schubert, R. Eberhardt and A. Tunnermann.
Keywords for this news article include: Jena, Europe, Germany, Organic Electronics
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