Temp Sensing Paints: Spray on – Wash off

Simultaneously Measure Barometric Pressure

Regensberg, Germany –?? Researchers have developed a water-based fluorescent paint that can be used to simultaneously image pressure and temperature distribution on aeroplanes and cars. The paint is environmentally friendly plus easy to clean-up and dispose.

Visualising pressure and temperature distribution on aircraft using wind tunnel tests is an important part of aerodynamic research. Pressure or temperature-sensitive paints that produce fluorescent signals are used, but they are based on volatile and toxic organic solvents that require extensive clean up and special protective clothing.

Now, Otto Wolfbeis at the University of Regensberg, Germany, and colleagues have developed luminescent water-soluble paints that measure pressure and temperature simultaneously.

Both indicator probes in the paint can be excited using LEDs or diode lasers emitting at a wavelength of 405 nm and two independent signals are obtained allowing imaging of barometric pressure and of temperature.

“The resulting sensor paint is environmentally friendly, safer to work with and easy to wash off as well as having remarkable sensing ranges and response,” adds Wolfbeis.

Link to journal article: www.rsc.org/Publishing/Journals/AN/article.asp?doi=b927255k

Reference Citation: Dual sensing of pO2 and temperature using a water-based and sprayable fluorescent paint
Lorenz H. Fischer, Sergey M. Borisov, Michael Schaeferling, Ingo Klimant and Otto S. Wolfbeis, Analyst, 2010
DOI: 10.1039/b927255k