How small is small? ISA - InTech In an article posted by ISA - InTech, from an interview with scientists from NIST, they use terms such as tiny, micro and nano.  The team at NIST is working on  temperature-sensitive fluorescent dyes to measure and monitor the critical temperature in Microfluidic systems used in medical diagnostics and DNA forensics.

Fascinating in a BIG way.  Check it out.