See how to create hexagons for any English paper piecing project using my free hexie printable template - link is at the end of this tutorial. No time to sew now? Savethis linkor image to Pinterest so you can use it later: Supplies To start an English paper piecing project Epp projects...
In this study, Pr3+-activated LaF3 with hollow hexagon nanostructures (HHNs) is achieved by a green and eco-friendly hydrothermal method without any catalyst, template, or surfactant. The pore structure of the LaF3 HHNs is greatly affected by the content of Pr3+ ions and hydrothermal ...