David Stevenson  
Research Scientist  
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WELCOME

After obtaining a PhD in bioengineering, I began working in the Optical Trapping Group at the University of St Andrews in 2004. I am keenly interested in how optical tweezers can be applied to modern biological questions. In my research, I investigate photoporation, laser-guided neuron growth, and single cell manipulation by tweezing. I am particularly fascinated by the use optical tweezers as a tool to enable long term single cell culture and analysis; they are the ultimate instrument for lab-on-a-cell experimentation.

 

 
 

 
Optical Tweezer
A highly focussed laser that allows the 3D manipulation of micron and sub-micron sized spherical objects, such as cells.

Photoporation
The act of puncturing a sub-micron sized hole in the plasma membrane of a cell in order to load substances into it.

Laser guided neuron growth
A laser, when focussed on the leading edge of a growing axon, can influence the direction and rate of growth.