Download or read book The Use of Optical Tweezers and Laser Scissors in Cell Biology written by Nicholas W. Hyun and published by . This book was released on 2014 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical tweezers and laser scissors are invaluable tools to manipulate cells on the micro and nano scale level. By integrating laser technologies with imaging and biochemical techniques, robust systems can be created to study various biological and biochemical processes. The purpose of this thesis is to describe two different optical methods used to study two cell-based problems. In the first experiment, optical tweezers are used to examine the effects of viscosity on sperm motility and energetics using a 1064nm Nd:YVO4 continuous laser. In the second experiment, laser scissors are used to study growth cone response from laser induced damage using a Vanguard Nd: YVO4 second harmonic generator (SHG) 532 nm picosecond green laser. The proceeding sections describe the optical systems for each experiment as well as the methods used. Results of both studies are presented and discussed in detail.