Düşük maliyetli ve özel tasarım çift ışınlı optik cımbızın performans özellikleri.

In this work is a low-cost and custom-designed optical tweezers using two He-Ne lasers (λ=632.8 nm) positioned in parallel is developed to trap and manipulate micron-sized particles. Polystyrene beads in water and yeast cells in yogurt culture were used as samples. To determine the characteristics of these optical tweezers, the stiffness and trapping force were determined using the Brownian Motion method for Laser 1, Laser 2 and the case where both lasers were used simultaneously. Small adjustments of the optical components affected the trapping force, resulting in a lower trapping force for Laser 2. In addition, the viscosity of the scattering medium has a significant effect on the trapping force; the higher viscosity of the yogurt culture prevents the capture of yeast cells with the simultaneous use of both lasers. The use of two lasers in parallel allows one laser to be used to capture and move particles while the other is used to capture multiple particles. This custom-designed optical tweezer, whose performance was investigated for different samples, has the potential to be applied in life science fields such as viscosity measurements, intracellular investigations, food engineering and drug delivery systems. [ABSTRACT FROM AUTHOR]