DIFFRACTION PHASE MICROSCOPY FOR QUANTIFYING CELL STRUCTURE AND DYNAMICS, OPT. LETT., 31, 775 (2006)
We have developed diffraction phase microscopy as a new technique for quantitative phase imaging of biological structures. The method combines the principles of common path interferometry and single-shot phase imaging and is characterized by subnanometer path-length stability and millisecond-scale acquisition time. The potential of the technique for quantifying nanoscale motions in live cells is demonstrated by experiments on red blood cells.