Researchers from Advanced Materials Department of Jozef Stefan Institute assist prof Dr Marija Vukomanović, MSc Lea Gazvoda, Dr Mario Kurtjak, Dr Marjeta Maček-Križmanc and prof Dr Matjaž Spreitzer, together with colleagues from Institute of Robotics and Intelligent Systems (IRIS), ETH Zurich, Switzerland and Institute of Theoretical and Computational Chemistry, University of Barcelona, Spain recently discovered and published in Wiley’s journal Small (IF=15), that adding small fraction of crystalline, high aspect ratio filler particles into polymeric matrix is a very effective tool for designing properties of organic piezoelectric biomaterials, like poly(l-lactide), including crystallization, orientation and piezoelectricity, and their interactions with human cells. From applicative point, piezoelectric PLLA has very good potential to be designed as advanced tool for bioelectronics and tailoring its crystallization is an interesting approach for optimizing its electrical properties to meet regenerative needs of different tissues.