clhs sciblog

A device is being developed that may be able to convert sound into light at a frequency that can find cancer spots before they are visibly detectable.  These light waves reflect off of explosives and other weapons in order to make them known.  Read more here. When you combine two semiconductors into a crystal and an intense high-frequency sound wave hits the crystal, it starts compression wave that goes through the crystal, trapping the semiconductor’s free electrons in the wave-troughs.

“The oscillating electrons act as dipoles and emit photons at terahertz frequencies, which Fromhold says could find uses in medical imaging and security.”  This is very useful in that this it could be used in various ways for medical and national security purposes.  Although this technology still is under development, the idea is unique and useful.

Q4-3