Acknowledgements
Thanks to Dr. John No� and Yiyi Deng for their help in adjusting to the vagaries of the system. Thanks also to Duke Scientific for their donation of microspheres to the Laser Teaching Center for testing.
P. Amendola. �Design and Construction of an Optimized Optical Tweezers.� Intel Science Talent Search Report (2001).
Y. Deng, �Optical Tweezers�, http://laser.physics.sunysb.edu/~yiyi (2003).
S. Smith et al., Am. J. Phys. 67, 26 (1999).
Z. Ulanowski and I.K. Ludlow, Meas. Sci. Technol. 11, 1778 (2000).