How does the thermal printing process for receipts, parking tickets, and the like work?

How does the thermal printing process for receipts, parking tickets, and the like work?
Gernot Frenking about his research, surprising chemical bonds, his work in Spain and China, basic research and applications
Every Nobel Prize winner receives a medal at the award ceremony. What is it made of?
B. S. Krishnamoorthy, India, wants to inspire his students to use the internet for information and networking right from the start
A big thank you for your contributions: We share some highlights and congratulate the book prize winners
Isabel Abánades Lázaro on the hopes, hurdles, and inspirations of young scientists, and the changing connectedness among them
Joseph Wang, University of California San Diego, on his current research, the exciting development of wearables, and giants in chemistry
Highlights of the WiFo – the most important chemistry congress in the German-speaking world
Omar M. Yaghi about his research, the discovery of MOFs, supporting young academics, and our responsibility as scientists
Peter H. Seeberger about his research, fascination for carbohydrates, changes in how to communicate science, and the possibility of autonomous, remote chemical synthesis