Application of the lazer tweezers for study of mechanical properties of erythrocytes

In this work an original and effective way is offered for the erythrocyte stretching with a multibeam trap generated by a diffraction grating, by means of its moving. The rigidity of erythrocytes is evaluated both by means of the trap, and with a single-beam trap (standard optical tweezers). A comparative analysis of the two techniques and a comparison of the received data to those obtained by the filterability method are carried out. The efficiency of the techniques offered for the definition of the erythrocytes membranes rigidity is shown.