Jeremy Hoffman looks at a monitor to track the progress of his work.
It's the only way he can see it.
The company for which he works, Potomac Photonics, focuses on small things. The company specializes in micro-manufacturing, using a variety of technologies, such as lasers and 3D printers, to create or modify products with ultimate precision, to the size of about a micron, smaller than a speck of dust.
"We like to say that if you can see it, we didn't do it," said Mike Adelstein, the company's president and CEO.
In this case, Hoffman, a 27-year-old research and development engineer in his second year at the company, is working on a microfluidic chip...