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Using focused laser light, optical tweezers can apply a force of about 13 pN to a 1.6 μm diameter polystyrene bead, which has a density about equal to that of water: a volume of 1.0 cm³ has a mass of 3 about 1.0 g.

Using focused laser light, optical tweezers can apply a force of about 13 pN to a 1.6 μm diameter polystyrene bead, which has a density about equal to that of water: a volume of 1.0 cm³ has a mass of 3 about 1.0 g.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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**Optical Tweezers and Their Applications** Using focused laser light, optical tweezers can apply a force of about 13 piconewtons (pN) to a 1.6 micrometer (µm) diameter polystyrene bead. This bead has a density approximately equal to that of water. For context, a volume of 1.0 cubic centimeter (cm³) of water has a mass of about 1.0 gram (g). **Explanation:** Optical tweezers are scientific instruments that use the radiation pressure from a focused laser beam to hold and move microscopic objects, such as beads or cells, in a precise manner. They are particularly useful in the fields of biology and physics for manipulating small particles without physical contact. The ability to apply such small forces is crucial for studying interactions at a cellular level.
Transcribed Image Text:**Optical Tweezers and Their Applications** Using focused laser light, optical tweezers can apply a force of about 13 piconewtons (pN) to a 1.6 micrometer (µm) diameter polystyrene bead. This bead has a density approximately equal to that of water. For context, a volume of 1.0 cubic centimeter (cm³) of water has a mass of about 1.0 gram (g). **Explanation:** Optical tweezers are scientific instruments that use the radiation pressure from a focused laser beam to hold and move microscopic objects, such as beads or cells, in a precise manner. They are particularly useful in the fields of biology and physics for manipulating small particles without physical contact. The ability to apply such small forces is crucial for studying interactions at a cellular level.
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