Dynamics Study of the Deformation of Red Blood Cell by Optical Tweezers

• 作者: Jeremie T. Zoueu Konin E. Jean Michel Megnassan Eugene Michel A. Kouacou Yale Pavel
• 来源期刊: 生物物理学期刊(英文)
• 学科: 医学
• 关键词: Optical TWEEZERS ELASTICITY Mechanical Properties TENSILE INDENTATION
• 年，卷（期）: 2017,（2）
• 页码范围: 59-69
• 页数: 11页
• 分类号: R73

摘要

In recent years, extensive research has been carried out on red blood cells in order to investigate their mechanical properties. The interest in these studies has been possible thanks to the technological innovations made in the field of micro or nano manipulation of biological and non-biological particles without physical contact. In the present project, we have developed a new approach to study the deformation of red blood cells moving against a trapped microbead by applying a sinusoidal voltage (DC offset 3.5 Vpp) to the stage at 0.4 Hz frequencies. The oscillating movement imposed on the stage highlights the indentation test and the tensile test known for the study of mechanical behavior of materials. The mechanical properties found are: the modulus of elasticity (Young Modulus), the shear modulus, the coefficient of hardening and erythrocyte resistance coefficient. The axial shear modulus 25.00 ± 1.5 μN/m and the transversal shear modulus 15.7 ± 4.63 μN/m were compared to those in the literature. These values were respectively determined by Hooke’s law and the Hertz model.