Researchers at the McKelvey School of Engineering at Washington University in St. Louis have developed ink pens that allow anyone to handwrite flexible, stretchable optoelectronic devices on everyday ...

VENLO, Netherlands--(BUSINESS WIRE)--Cimpress N.V. (Nasdaq:CMPR), the world leader in mass customization, announced today it has entered into a definitive agreement to acquire National Pen Co. LLC, ...