Tag: Biomedical engineering
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The Concept of Optical Tweezers In Cell Biology
Because of the different refractive index of a cell membrane compared to the bathing solution, it will tend to refract a laser beam impinging on it. Consider the illustration below, in the left side of the figure, with a parallel laser beam impinging on the left side of the cell, the cell is seen to…
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Principle of Working of a Demand Cardiac Pacemaker
A cardiac pacemaker is normally used to produce pulses that force the heart to beat at higher rate; this is particularly important when blockage occurs to the biological signals that stimulate the heart to beat. A demand pacemaker is specifically helpful to the patient with partial blockage, in which case an electric pulse to the…