Two parallel optical surfaces often exhibit colorful fringes along the lines of equal thickness because of the interference of light. This simple phenomenon allows one to observe subwavelength ...

The principles behind anti-glare and anti-reflection surfaces have been understood for some time, with new methods to improve performance constantly under development and new applications emerging.

A project at NIST has developed a new way to monitor and assess 3D printing of metals. Finding and correcting defects inadvertently created inside a 3D printed part is one of the biggest challenges ...