Optical Tweezers Animation

This animation shows the stretching and relaxing a single biological molecule using optical tweezers. The top bead is “tweezed” by a laser light and the bottom bead is fixed onto a pipette tip. A biological molecule (eg DNA) is tethered between the two beads and can be repeatedly pulled and relaxed, providing mechanical properties of the biomacromolecules at the single molecule level. This method can also provide very useful information about dynamic properties of biomolecules, which can shed light on protein folding, self-assembly, and protein-protein interactions. Animation courtesy of postdoctoral research associate Chenyang Tie, a member of Professor Joonil Seog’s Molecular Mechanics and Self-Assembly Laboratory at the University of Maryland.
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Nanophysics and Nanotechnology: An Introduction to Modern Concepts in Nanoscience (Physics Textbook)

With the second edition of his highly successful textbook ‘Nanophysics and Nanotechnology’, the author has once more provided a unique, self-contained introduction to the physical concepts, techniques and applications of nanoscale systems by covering its entire spectrum from the latest examples right up to single-electron and molecular electronics. The book is basically at the level of an upper level undergraduate engineering or science student. New sections have been added on the use of DNA as

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